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Gas release characteristics during carbonization of iron coke hot briquette and influence of heating rate

Journal of Iron and Steel Research International 2023年第11期30卷 2163-2172页

作者： Zi-yu Wang Dong Han Zheng-gen Liu Man-sheng Chu Yong-jie Zhang Li-feng Zhang Ji-wei bao Ming-yu Wang School of Metallurgy Northeastern UniversityShenyang110819LiaoningChina Engineering Research Center of Frontier Technologies for Low-Carbon Steelmaking(Ministry of Education) Shenyang110819LiaoningChina Liaoning Province Engineering Research Center for Technologies of Low-Carbon Steelmaking Shenyang110819LiaoningChina

The release characteristics of CH_(4),H_(2),CO and CO_(2) from iron coke hot briquette(ICHB)during carbonization were *** results show that compared with briquette without iron ore,Fe_(3)O_(4) can inhibit the release rate of H2 and promote the production of CO and CO_(2).In addition,when the heating rate increases from 3 to 7℃/min,the release rates of CH4 and H2 increase,while the release rates of CO and CO_(2) first increase and then *** carbonization process of ICHB was segmented,and corresponding kinetic analysis was carried *** results show that the activation energy of StageⅡand StageⅣis higher in the carbonization process of ICHB,and the active pyrolysis of coal and the reduction of iron ore occur in these two *** addition,the effect of heating rate on the kinetic parameters of ICHB carbonization process was *** was found that when the heating rate increased,the reaction activation energy of StageⅣdecreased first and then increased,which was consistent with the release law of CO and CO_(2).The analysis showed that the increase in heating rate leads to more reactions at higher temperatures,resulting in an increase in the release rate of some *** addition,thermal hysteresis can also cause some processes to fail to fully react at the end of *** is also found that the apparent activation energy and preexponential factor have kinetic compensation effect during the car-bonization of ICHB.

关键词： Iron coke hot briquette Carbonization Gas release characteristic Heating rate Kinetics

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A Pd_(2)L_(4) Metallacage-Cored Supramolecular Amphiphile and Its Application in Dual-Responsive Controllable Release

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Chinese Journal of Chemistry 2022年第20期40卷 2421-2427页

作者： Yongping Chai Peng Qin Xupeng Li Tai-bao wei Qi Lin You-Ming Zhang Hong Yao Wen-Juan Qu Bingbing Shi Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceCollege of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhouGansu730070 China Gansu Natural Energy Research Institute LanzhouGansu730046 China

The construction of multi-responsive supramolecular systems for drug delivery is a challenging *** this work,a Pd_(2)L_(4) metallacage 1·([BF_(4)]^(−))_(4) with four pyrene units was first designed and synthesized through coordination-driven *** the introduction ofγ-CD,a supramolecular amphiphile 1–γ-CD was successfully constructed based on the host–guest molecular recognition betweenγ-CD and the pyrene unit of 1·([BF_(4)]^(−))_(4),which further self-assembled into dual-responsive supramolecular vesicles in aqueous ***·HCl was used as a model molecule to study the drug encapsulation and release behavior of the supramolecular *** adjusting the pH of the solution to acidic condition or adding a certain amount ofα-amylase,the vesicle structure was destroyed to achieve rapid and effective release of the drug *** study provides an example for the rational design of efficient dual-responsive supramolecular nanocarriers,which have potential application value in the field of controlled drug delivery.

关键词： Self-assembly Molecular recognition Metallacages Host-Guest systems Controllable release

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Comparison of agronomic performance between inter-sub-specific hybrid and inbred japonica rice under different mechanical transplanting methods

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Journal of Integrative Agriculture 2018年第4期17卷 806-816页

作者： HU Ya-jie WU Pei ZHANG Hong-cheng DAI Qi-gen HUO Zhong-yang XU Ke GAO Hui wei Hai-yan GUO bao-wei CUI Pei-yuan Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou University

Mechanical transplanting has been applied to rice cultivation to save labor costs and ease labor shortages in Asian countries, especially in China. However, little information is available related to the characteristics of agronomic performance when comparing inter-sub-specific hybrid rice(IHR) and inbred japonica rice(IJR) under mechanical transplanting method. In 2013 and 2014, field experiments were conducted using IHR(Yongyou 2640) and IJR(Wuyunjing 24) under two cultivation patterns, that is, pot seedlings mechanically transplanted(PS) and carpet seedlings mechanically transplanted(CS). Grain yield, yield components, leaf area index(LAI), leaf area duration(LAD), aboveground biomass, crop growth rate(CGR), nitrogen(N) uptake, and N accumulation were investigated. When compared with CS, PS displayed significantly increased grain yield for both varieties because the larger sink size allowed higher N accumulation from panicle initiation to maturity. Moreover, total aboveground biomass under PS increased significantly compared with that under CS; that is, higher photosynthetic productivity resulted from a greater LAI and higher LAD during the grain filling stage. Higher N absorption capacity in the middle and late growth periods resulted in significantly enhanced total N uptake under PS. When compared with IJR for both treatments, IHR generated 75.2% more grain yield. However, the characteristics creating high yield of IHR were different from those of IJR. Greater aboveground biomass production as well as higher N uptake and accumulation created higher grain yield in IHR than in IJR. These results suggest higher yield could be achieved using PS with IHR, attributing to exploit both yield superiority and productive potential.

关键词： high yield formation inter-sub-specific hybrid rice inbred japonica rice mechanical transplanting method

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Estrogen augmented visceral pain and colonic neuron modulation in a double-hit model of prenatal and adult stress

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World Journal of Gastroenterology 2021年第30期27卷 5060-5075页

作者： Jing-Hong Chen Ying Sun Pei-Jun Ju Jin-bao wei Qing-Jie Li John H Winston Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghai 200030China Department of Internal Medicine University of Texas Medical BranchGalvestonTX 77555United States

BACKGROUND Chronic stress during pregnancy may increase visceral hyperalgesia of offspring in a sex-dependent *** adult stress in offspring will increase this *** on the evidence implicating estrogen in exacerbating visceral hypersensitivity in female rodents in preclinical models,we predicted that chronic prenatal stress(CPS)+chronic adult stress(CAS)will maximize visceral hyperalgesia;and that estrogen plays an important role in colonic *** The aim was to illuminate the role of estrogen in colonic hyperalgesia and its underlying *** We established a CPS plus CAS rodent model in which the balloon was used to distend the *** single-fiber recording in vivo and patch clamp experiments in vitro were used to monitor the colonic neuron’s *** reverse transcription-polymerase chain reaction,western blot,and immunofluorescence were used to study the effects of CPS and CAS on colon primary afferent *** used ovariectomy and letrozole to reduce estrogen levels of female rats respectively in order to assess the role of estrogen in female-specific enhanced primary afferent *** Spontaneous activity and single fiber activity were significantly greater in females than in *** enhanced sensitization in female rats mainly came from lowthreshold *** significantly increased single-unit afferent fiber activity in L6-S2 dorsal roots in *** was further enhanced by *** addition,the excitability of colon-projecting dorsal root ganglion(DRG)neurons increased in CPS+CAS rats and was associated with a decrease in transient Atype K+*** with ovariectomy,treatment with the aromatase inhibitor letrozole significantly reduced estrogen levels in female rats,confirming the gender ***,mice treated with letrozole had decreased colonic DRG neuron *** intrathecal infusion of estrogen increased brain-derived neurotrophic factor(BDNF)p

关键词： Chronic prenatal stress Estrogen Visceral pain Neuronal sensitization Excitability Letrozole

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人均水泥累积消费量与城市化率的协整分析

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建筑材料学报 2007年第3期10卷 253-259页

作者：韦保仁苏州科技大学环境科学与工程系江苏苏州215011

收集了1980～2004年人均水泥累积消费量和城市化率的统计数据,对人均水泥累积消费量和城市化率这2个时间序列进行了单位根检验,发现它们同为I(2)阶时间序列.采用Engle-Granger两步法,证明了人均水泥累积消费量与城市化率之间存在着明显... 详细信息

收集了1980～2004年人均水泥累积消费量和城市化率的统计数据,对人均水泥累积消费量和城市化率这2个时间序列进行了单位根检验,发现它们同为I(2)阶时间序列.采用Engle-Granger两步法,证明了人均水泥累积消费量与城市化率之间存在着明显的协整关系.Granger因果分析表明,人均水泥累积消费量是影响城市化率的单向原因.采用所得协整关系,分析了中国1)城市化进程所需要的水泥累积消费量.计算结果表明,在城市化基本完成时,中国的人均水泥累积消费量将与日本、中国台湾地区城市化基本完成时的人均水泥累积消费量比较接近.

关键词：协整人均水泥累积消费量城市化率

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Effects of sowing date and ecological points on yield and the temperature and radiation resources of semi-winter wheat

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Journal of Integrative Agriculture 2023年第5期22卷 1366-1380页

作者： ZHANG Zhen-zhen CHENG Shuang FAN Peng ZHOU Nian-bing XING Zhi-peng HU Ya-jie XU Fang-fu GUO bao-wei wei Hai-yan ZHANG Hong-cheng Jiangsu Key Laboratory of Crop Cultivation and Physiology/Innovation Center of Rice Cultivation Technology in Yangtze Valley Ministry of Agriculture and Rural Affairs/Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009P.R.China

Exploring the effects of sowing date and ecological points on the yield of semi-winter wheat is of great *** study aims to reveal the effects of sowing date and ecological points on the climate resources associated with wheat yield in the Rice–Wheat Rotation *** six sowing dates,the experiments were carried out in Donghai and Jianhu counties,Jiangsu Province,China using two semi-winter wheat varieties as the objects of this *** basic seedlings of the first sowing date (S1) were planted at 300×10^(4)plants ha^(-1),which was increased by 10%for each of the delayed sowing dates (S2–S6).The results showed that the delay of sowing date decreased the number of days,the effective accumulated temperature and the cumulative solar radiation in the whole growth *** yields of S1 were higher than those of S2 to S6 by 0.22–0.31,0.5–0.78,0.86–0.98,1.14–1.38,and 1.36–1.59 t ha^(–1),*** a given sowing date,the growth days increased as the ecological point was moved north,while both mean daily temperature and effective accumulative temperature decreased,but the cumulative radiation *** a result,the yields at Donghai County were 0.01–0.39 t ha–1lower than those of Jianhu County for the six sowing *** effective accumulative temperature and cumulative radiation both had significant positive correlations with *** average temperature was significantly negatively correlated with the *** decrease in grain yield was mainly due to the declines in grains per spike and 1 000-grain weight caused by the increase in the daily temperature and the decrease in the effective accumulative temperature.

关键词： wheat yield sowing date ecological point

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Measurements of absolute electron capture cross sections in He^(2+)–He and Ne^(8+)–O_(2'), N_(2'), CH_4 collisions

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Nuclear Science and Techniques 2023年第10期34卷 126-135页

作者： Pu-Fang Ma Jia-Rong Wang Zi-Xiao Zhang Tian-Ming Meng Zi-Han Xia Bai-Hui Ren Long wei Ke Yao Jun Xiao Ya-Ming Zou Bing-Sheng Tu bao-Ren wei Institute of Modern Physics Department of Nuclear Science and TechnologyFudan UniversityShanghai 200433China Key Laboratory of Nuclear Physics and Ion‑Beam Application(MOE) Fudan UniversityShanghai 200433China

The total absolute cross sections of single-and double-electron capture (SEC and DEC) in the collisions of He^(2+)with He and Ne^(8+)with O_(2),N_(2),and CH_(4) were studied in the energy ranges 3.5–50 keV/u and 2.8–40 keV/u,*** a deep analysis of the experimental systematic uncertainties in the measurement procedure and data evaluation,the error in the experimental results of the SEC cross sections is less than 9%.Within the uncertainties,the present results of the He^(2+)–He collision show good consistency with previous measurements,validating the experimental system and paving the way for precise measurements of EC cross sections for a variety of ions and neutral *** present measurements allow for a test of EC theory and provide crucial EC cross section data for the establishment of plasma models in fusion research and astrophysical X-ray studies.

关键词： Highly charged ions Cross section Electron capture Charge exchange

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Accuracy of auditory evoked potential index in monitoring anesthetic depth during isoflurane anesthesia

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中华麻醉学杂志 2010年第B2期30卷 58-60页

作者： LIN Quan-yang MA bao-xin SHEN wei ZHENG Qing-qi ZHANG Jin Department of Anesthesiology Zhongshan Hospital Xiamen UniversityXiamen 361004 China

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A Bridge Neural Network-Based Optical-SAR Image Joint Intelligent Interpretation Framework

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Space(Science & Technology) 2021年第1期2021卷 97-106页

作者： Meiyu Huang Yao Xu Lixin Qian weili Shi Yaqin Zhang wei bao Nan Wang Xuejiao Liu Xueshuang Xiang Qian Xuesen Laboratory of Space Technology China Academy of Space TechnologyBeijingChina

The current interpretation technology of remote sensing images is mainly focused on single-modal data,which cannot fully utilize the complementary and correlated information of multimodal data with heterogeneous characteristics,especially for synthetic aperture radar(SAR)data and optical *** solve this problem,we propose a bridge neural network-(BNN-)based optical-SAR image joint intelligent interpretation framework,optimizing the feature correlation between optical and SAR images through optical-SAR matching *** adopts BNN to effectively improve the capability of common feature extraction of optical and SAR images and thus improving the accuracy and application scenarios of specific intelligent interpretation tasks for optical-SAR/SAR/optical ***,BNN projects optical and SAR images into a common feature space and mines their correlation through pair ***,to deeply exploit the correlation between optical and SAR images and ensure the great representation learning ability of BNN,we build the QXS-SAROPT dataset containing 20,000 pairs of perfectly aligned optical-SAR image patches with diverse scenes of high *** results on optical-to-SAR crossmodal object detection demonstrate the effectiveness and superiority of our *** particular,based on the QXSSAROPT dataset,our framework can achieve up to 96%high accuracy on four benchmark SAR ship detection datasets.

关键词： modal utilize matching

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Increasing the appropriate seedling density for higher yield in dry direct-seeded rice sown by a multifunctional seeder after wheatstraw return

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Journal of Integrative Agriculture 2023年第2期22卷 400-416页

作者： TIAN Jin-yu LI Shao-ping CHENG Shuang LIU Qiu-yuan ZHOU Lei TAO Yu XING Zhi-peng HU Ya-jie GUO bao-wei wei Hai-yan ZHANG Hong-cheng Jiangsu Key Laboratory of Crop Cultivation and Physiology/Innovation Center of Rice Cultivation Technology in Yangtze Valley Ministry of Agriculture and Rural Affairs/Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009P.R.China Agricultural College Xinyang Agriculture and Forestry UniversityXinyang 464000P.R.China

Dry direct-seeded rice(DDR) sown using a multifunctional seeder that performs synchronous rotary tillage and sowing has received increased attention because it is highly efficient,relatively cheap,and environmentally ***,this method of rice production may produce lower yields in a rice–wheat rotation system because of its poor seedling *** address this problem,we performed field experiments to determine the rice yield at five seedling density levels(B1,B2,B3,B4,and B5=100,190,280,370,and 460 seedlings m-2,respectively) and clarify the physiological basis of yield *** selected a representative high-quality rice variety and a multifunctional seeder that used in a typical rice–wheat rotation area in 2016 and *** proportion of main stem panicle increased with increasing seedling *** was a parabolic relationship between yield and seedling density,and the maximum yield(9.34-9.47 t ha-1) was obtained under *** maximum yield was associated with a higher total spikelet number m-2 and greater biomass accumulation from heading to *** higher total spikelet number m-2 under B3 was attributed to an increase in panicle number m-2 compared with B1 and *** the panicle numbers also increased under B4 and B5,these increases were insufficient to compensate for the reduced spikelet numbers per *** biomass,smaller leaf area,and lower N uptake per plant from the stem elongation stage to the heading stage were partially responsible for the smaller panicle size at higher seedling density levels such as *** higher biomass accumulation under B3 was ascribed to the increases in the photosynthetic rate of the top three leaves m-2 of land,crop growth rate,net assimilation rate,and leaf area ***,the B3 rice population was marked by a higher grain–leaf ratio,as well as a lower export ratio and transport ratio of biomass per stem-sheath.A quadratic function predicted that 260-290 seedlings m-2 is the op

关键词： seedling density dry direct-seeded rice sown by a multifunctional seeder rice–wheat rotation system yield biomass photosynthetic capacity

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