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“互联网+”助力林业灾害应急管理研究

测绘与空间地理信息 2024年第1期47卷 103-105,109页

作者：江晓鹏梅州市林业综合服务中心广东梅州514000

随着近年来林业灾害愈加频发,林业灾害应急管理越来越受到人们的关注。构建一套全新的林业灾害应急管理模式势在必行。本文利用“互联网+”、GIS、物联网等先进技术,围绕林业灾害的森林火灾监测、林业有害生物防治及野生动物疫源疫病监... 详细信息

随着近年来林业灾害愈加频发,林业灾害应急管理越来越受到人们的关注。构建一套全新的林业灾害应急管理模式势在必行。本文利用“互联网+”、GIS、物联网等先进技术,围绕林业灾害的森林火灾监测、林业有害生物防治及野生动物疫源疫病监测3个方面内容,构建了“互联网+林业”灾害应急管理新模式,搭建了林业灾害应急管理平台,实现了林业资源“一张图”展示、查询和统计,森林火灾应急管理、林业有害生物监测管理及野生动物疫源疫病监测管理等功能,降低了林业灾害的发生率,提高了林业灾害应急管理能力。

关键词：互联网+ GIS 林业灾害:应急管理

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临床医药实践 2024年第4期33卷 283-288页

作者：王鹏飞郭倩江小鹏段炜山西白求恩医院山西医学科学院山西太原030032

目的:探讨抗合成酶综合征(ASS)和抗黑色素瘤分化相关基因5(MDA5)抗体阳性的皮肌炎(DM)合并间质性肺疾病(ILD)的临床特点和影像学特征。方法:收集2018年1月—2023年5月于山西白求恩医院住院的ASS患者和抗MDA5抗体阳性DM患者的临床资料(11... 详细信息

目的:探讨抗合成酶综合征(ASS)和抗黑色素瘤分化相关基因5(MDA5)抗体阳性的皮肌炎(DM)合并间质性肺疾病(ILD)的临床特点和影像学特征。方法:收集2018年1月—2023年5月于山西白求恩医院住院的ASS患者和抗MDA5抗体阳性DM患者的临床资料(116例),进一步筛选出合并ILD的患者,将其分为ASS-ILD组和MDA5+DM-ILD组。回顾性分析不同组间患者的临床症状、影像学特点、治疗方案以及预后。结果:MDA5+DM患者ILD发生率高于ASS患者,MDA5+DM-ILD组Gottron征、呼吸困难症状和快速进展性ILD发生率高于ASS-ILD组,ASS-ILD组肌无力症状较MDA5+DM-ILD组多见,差异均有统计学意义(P<0.05)。磨玻璃影、网格影是两组患者最常见的影像学表现。MDA5+DM-ILD组磨玻璃影和纵隔气肿较ASS-ILD组多见,差异均有统计学意义(P<0.05)。MDA5+DM-ILD组病死率明显高于ASS-ILD组,差异有统计学意义(P<0.05)。MDA5+DM-ILD患者经糖皮质激素联合环磷酰胺及另外一种免疫抑制剂(他克莫司或托法替布)的三联治疗后,病死率较两联治疗有所下降。结论:抗MDA5抗体阳性DM患者ILD发生率高于ASS患者,MDA5+DM-ILD患者皮肤受累和呼吸困难症状较ASS-ILD患者重,而肌炎症状较ASS-ILD患者轻。磨玻璃影和纵隔气肿是MDA5+DM-ILD重要的影像学特征。

关键词：间质性肺疾病抗合成酶抗体综合征抗黑色素瘤分化相关基因5抗体临床特征影像特征

Effect of demineralization on pyrolysis characteristics of LPS coal based on its chemical structure

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International Journal of Coal Science & Technology 2023年第2期10卷 181-195页

作者： Lin Qian Jinkai Xue Chao Tao Chao Ma xiaopeng jiang Feiqiang Guo School of Low-Carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Clean Energy Utilization Zhejiang University310027 HangzhouChina

The critical issue in developing mature Oxy-Coal Combustion Steam System technology could be the reactivity of deminer-alized coal which,is closely related to its chemical *** chemical structures of Liupanshui raw coal(LPS-R)and Liupanshui demineralized coal(LPS-D)were analyzed by FTIR and solid-state *** pyrolysis experiments were carried out by TG,and the pyrolysis kinetics was analyzed by three iso-conversional *** and 13C-NMR results suggested that the carbon structure of LPS coal was not altered greatly,while demineralization promoted the maturity of coal and the condensation degree of the aromatic ring,making the chemical structure of coal more *** oxygen-containing functional groups with low bond energy were reduced,and the ratio of aromatic carbon with high bond energy was increased,decreasing the pyrolysis *** curve-fitting results revealed that the thermal weight loss of LPS coal mainly came from the cleavage of aliphatic covalent *** pyrolysis kinetics analysis of LPS-R and LPS-D,the apparent activation energies were 76±4 to 463±5 kJ/mol and 84±2 to 758±12 kJ/mol,respectively,under different conversion *** reactivity of the demineralized coal was inhibited to some extent,as the apparent activation energy of pyrolysis for LPS-D increased by acid treatment.

关键词： Demineralization Chemical structure of coal Coal pyrolysis Pyrolysis kinetics Iso-conversional

Influencing Factors and Prediction of Risk of Returning to Ecological Poverty in Liupan Mountain Region,China

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Chinese Geographical Science 2024年第3期34卷 420-435页

作者： CUI Yunxia LIU xiaopeng jiang Chunmei TIAN Rujun NIU Qingrui School of Geography and Planning Ningxia UniversityYinchuan 750021China Key Laboratory(China-Arab)of Resource Evaluation and Environmental Regulation of Arid Region in Ningxia Yinchuan 750021China

China has resolved its overall regional poverty in 2020 by attaining moderate societal *** country has entered a new development stage designed to achieve its second centenary ***,ecological fragility and risk susceptibility have increased the risk of returning to ecological *** this paper,the Liupan Mountain Region of China was used as a case study,and the counties were used as the scale to reveal the spatiotempora differentiation and influcing factors of the risk of returning to poverty in study *** indicator data for returning to ecological poverty from 2011-2020 were collected and summarized in three dimensions:ecological,economic and *** autoregressive integrated moving average model(ARIMA)time series and exponential smoothing method(ES)were used to predict the multidimensional indicators of returning to ecological poverty for 61 counties(districts)in the Liupan Mountain Region for *** back propagation neural network(BPNN)and geographic information system(GIS)were used to generate the spatial distribution and time variation for the index of the risk of returning to ecological poverty(RREP index).The results show that 1)ecological factors were the main factors in the risk of returning to ecological poverty in Liupan Mountain Region.2)The RREP index for the 61 counties(districts)exhibited a downward trend from *** RREP index declined more in medium-and high-risk areas than in low-risk *** 2021 to 2025,the RREP index exhibited a slight downward *** 2026 to2030,the RREP index was expected to decline faster,especially from 2029-2030.3)Based on the RREP index,it can be roughly divided into three types,namely,the high-risk areas,the medium-risk areas,and the low-risk *** natural resource conditions in lowrisk areas of returning to ecological poverty,were better than those in medium-and high-risk areas.

关键词： risk of returning to ecological poverty autoregressive integrated moving average model(ARIMA) exponential smoothing model back propagation neural network(BPNN) Liupan Mountain Region,China

水下S-CO_(2)循环部分进气轴/径向涡轮机对比研究

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水下无人系统学报 2024年第1期32卷 87-96页

作者：王瀚伟姜晓鹏罗凯张佳楠党建军秦侃西北工业大学航海学院陕西西安710072 中国船舶集团有限公司第705研究所陕西西安710077

将超临界二氧化碳(S-CO_(2))循环动力系统合理应用于无人水下航行器(UUV),有助于解决现有UUV蒸汽动力循环系统尤其是针对小功率等级应用效率低的问题。为合理选型水下S-CO_(2)系统涡轮机,结合损失模型的一维方法获得了设计空间内的最佳... 详细信息

将超临界二氧化碳(S-CO_(2))循环动力系统合理应用于无人水下航行器(UUV),有助于解决现有UUV蒸汽动力循环系统尤其是针对小功率等级应用效率低的问题。为合理选型水下S-CO_(2)系统涡轮机,结合损失模型的一维方法获得了设计空间内的最佳几何参数,并基于RANS方程的三维数值仿真方法验证了一维设计方法的合理性,进一步对比分析了轴/径向涡轮机的气动性能及流动特性。结果表明,设计工况下径向涡轮机内效率比轴向涡轮机高5.41%,但尺寸较大,约为轴向涡轮机的2倍;径向涡轮机的主要损失集中在喷管和转子非工作段,而轴向涡轮机则主要为转子处产生的二次流损失。通过变工况分析发现,轴向涡轮机更适用于低速比工况,但在同一转速下径向涡轮机效率更高。文中研究结果可为应用于UUV的S-CO_(2)系统动力主机的研制提供参考。

关键词：无人水下航行器轴/径向涡轮机超临界二氧化碳气动性能

Childhood sleep:physical,cognitive,and behavioral consequences and implications

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World Journal of Pediatrics 2024年第2期20卷 122-132页

作者： jianghong Liu xiaopeng Ji Susannah Pitt Guanghai Wang Elizabeth Rovit Terri Lipman Fan jiang School of Nursing University of Pennsylvania418 Curie Blvd.Room 424Claire M.Fagin HallPhiladelphiaPA 19104USA College of Health Sciences University of DelawareNewarkDE 19716USA Geisinger Commonwealth School of Medicine ScrantonPA 18510USA Pediatric Translational Medicine Institute Department of Developmental and Behavioral PediatricsSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina

Background Sleep problems in children have been increasingly recognized as a major public health *** research has extensively studied and presented many risk factors and potential mechanisms for children’s sleep *** this paper,we aimed to identify and summarize the consequences and implications of child sleep *** sources A comprehensive search for relevant English language full-text,peer-reviewed publications was performed focusing on pediatric sleep studies from prenatal to childhood and adolescence in a variety of indexes in PubMed,SCOPUS,and Psych Info published in the past two *** relevant data-based articles and systematic reviews are *** Many adverse consequences are associated with child sleep deficiency and other sleep problems,including physical outcomes(e.g.,obesity),neurocognitive outcomes(e.g.,memory and attention,intelligence,academic performance),and emotional and behavioral outcomes(e.g.,internalizing/externalizing behaviors,behavioral disorders).Current prevention and intervention approaches to address childhood sleep problems include nutrition,exercise,cognitive–behavioral therapy for insomnia,aromatherapy,acupressure,and *** interventions may be particularly important in the context of coronavirus disease *** research and policy strategies can target the risk factors of child sleep as well as the efficacy and accessibility of *** Given the increasing prevalence of child sleep problems,which have been shown to affect children’s physical and neurobehavioral wellbeing,understanding the multi-aspect consequences and intervention programs for childhood sleep is important to inform future research direction as well as a public health practice for sleep screening and intervention,thus improving sleep-related child development and health.

关键词： Behavior Child sleep Consequences Implications Neurocognitive Physical Prevention/intervention

Hydrogen storage properties of Zr_(1-x)Ti_xCo intermetallic compound

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Rare Metals 2006年第Z2期25卷 200-203页

作者： HUANG Zhuo LIU xiaopeng jiang Lijun WANG Shumao Energy Materials and Technology Research Institute General Research Institute for Non-Ferrous Metals Beijing 100088 China Energy Materials and Technology Research Institute General Research Institute for Non-Ferrous Metals Beijing 100088 China Energy Materials and Technology Research Institute General Research Institute for Non-Ferrous Metals Beijing 100088 China Energy Materials and Technology Research Institute General Research Institute for Non-Ferrous Metals Beijing 100088 China

The intermetallic compound Zr1-xTixCo was prepared and its suitability for hydrogen storage was investigated. The alloys obtained by magnetic levitation melting with the composition of Zr1-xTixCo (x=0, 0.1, 0.2 and 0.3, at.%) show single cubic phase by X-ray diffraction. A single sloping plateau was observed on each isothermal, and pressure-composition-temperature (PCT) measurement results show that the equilibrium hydrogen desorption pressure of Zr1-xTixCo alloy increases with increasing Ti content. The desorption temperatures for supplying 100 kPa hydrogen are about 665, 642, 621 and 614 K for ZrCo, Zr0.9Ti0.1Co, Zr0.8Ti0.2Co and Zr0.7Ti0.3Co alloy, respectively. Repeated hydrogen absorption and desorption cycles do not generate separated ZrCo, TiCo and ZrH2 phases, indicating that alloys have good thermal and hydrogen stabilization.

关键词： hydrogen storage alloy ZrCo intermetallic compound hydrogen isotope

Designing appropriate heat treatment temperature for LaNi_(3.8)Al_(0.75)Mn_(0.45) alloy

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Rare Metals 2006年第Z1期25卷 243-246页

作者： jiang Yuwei LIU xiaopeng jiang Lijun WANG Shumao YANG Hongguang Institute for Energy Material and Technology General Research Institute for Non-Ferrous MetalBeijing 100088China China Institute of Atomic Energy Beijing 102413China

The effect of heat treatment on microstructure,equilibrium hydrogen sorption pressure and plateau slope of LaNi_(3.8)Al_(0.75)Mn_(0.45) alloy was investigated.X-ray diffraction(XRD)analysis indicates that annealed alloys have single phase and the same hexagonal structure as that of LaNi_(5) alloy(CaCu_(5) type,P6/mmm).The cell parameters of alloys fluctuate with the increasing annealing *** equilibrium hydrogen pressure and plateau slope are a parabola function with annealing temperature for LaNi_(3.8)Al_(0.75)Mn_(0.45) *** this relationship,an appropriate heat treatment temperature for LaNi_(3.8)Al_(0.75)Mn_(0.45) alloy is determined to about 1220-1230 K by mathematic simulation ***,the maximum hydrogen storage capacity of alloys does not affected by the annealing temperature.

关键词： La-Ni-Al alloy heat treatment hydrogen storage alloy plateau slope

Effect of Manganese substitution on hydrogen storage properties of LaNi_(4.25-x)Al_(0.75)Mn_(x) alloy

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Rare Metals 2006年第Z2期25卷 204-208页

作者： jiang Yuwei LIU xiaopeng jiang Lijun WANG Shumao YANG Hongguang Institute for Energy Materials and Technology General Research Institute for Non-ferrous MetalsBeijing 100088China China Institute of Atomic Energy Beijing 102413China

The effect of Mn substitution on phase structure,hydrogen hydriding/dehydriding properties(plateau pressure and slope)and reaction heat enthalpy of LaNi_(4.25-x)Al_(0.75)Mn_(x)alloys(x=0,0.25,0.35,0.45,0.55 and 0.65)were *** experimental results show that all LaNi_(4.25-x)Al_(0.75)Mn_(x)alloys have single phase and have the same hexagonal structure as that of LaNi5 alloy(CaCu_(5)type,P6/mmm).With increasing Mn substitution content,the cell parameters of LaNi_(4.25-x)Al_(0.75)Mn_(x)alloy greatly increase,but the maximum hydrogen storage capacity and the equilibrium absorption pressure of LaNi_(4.25-x)Al_(0.75)Mn_(x)alloy decrease from 1.38 wt.%to 1.18 wt.%and from 1.61 to 0.0712 MPa,***,the hydrogen pressure plateau slope factorσincreases from 0.014 to 0.18,but the hysteresis factor is nearly *** heat enthalpy absolute value|ΔH_(plat)|increases from 46.7 kJ·mol^(-1)H2 to 56.1 kJ·mol^(-1)H_(2)as the Mn content x increases from 0 to 0.65.

关键词： hydrogen storage alloy La-Ni-Al-Mn alloy P-C-T hysteresis and plateau slope