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Intracranial infection and sepsis in infants caused by Salmonella derby:A case report 被引量:1
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作者 Jing-Lu Yu Li-Li Jiang +1 位作者 rong dong Si-Yu Liu 《World Journal of Clinical Cases》 SCIE 2023年第28期6961-6966,共6页
BACKGROUND Salmonella derby(S.derby)is a Gram-negative diplococcus that is common in the digestive tract.Infected patients generally experience symptoms such as fever and diarrhea.Mild cases are mostly self-healing ga... BACKGROUND Salmonella derby(S.derby)is a Gram-negative diplococcus that is common in the digestive tract.Infected patients generally experience symptoms such as fever and diarrhea.Mild cases are mostly self-healing gastroenteritis,and severe cases can cause fatal typhoid fever.Clinical cases are more common in children.The most common form of S.derby infection is self-healing gastroenteritis,in which,fever lasts for about 2 d and diarrhea for<7 d.S.derby can often cause bacterial conjunctivitis,pneumonia,endocarditis,peritonitis and urethritis.However,intracranial infections in infants caused by S.derby are rare in clinical practice and have not been reported before in China.CASE SUMMARY A 4-mo-old female infant had recurrent fever for 2 wk,with a maximum body temperature of around 39.4°C.Treatment for infectious fever in a local hospital was ineffective,and she was admitted to our hospital.Before admission,there was one sudden convulsion,characterized by unclear consciousness,limb twitching,gaze in both eyes,and slight cyanosis on the face.Cerebrospinal fluid(CSF)culture was positive for Gram-negative bacilli,which conformed to S.derby.After treatment with meropenem and ceftriaxone antibiotics,the patient was discharged home in a clinically stable state after 4 wk of treatment.CONCLUSION We reported a rare case of S.derby cultured in CSF.S.derby enters the CSF through the blood–brain barrier,causing purulent meningitis.If not treated timeously,it can lead to serious,life-threatening infection. 展开更多
关键词 Salmonella derby INFANTS Cerebrospinal fluid Case report
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商务智能技术在智能化选煤厂应用的探讨 被引量:1
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作者 杨大村 荣东 周国宾 《煤炭加工与综合利用》 CAS 2023年第12期30-32,38,共4页
介绍了商务智能技术的基本概念,分析其在选煤厂中的设计和应用过程。通过商务智能技术在选煤厂智能化建设中的实施,实现选煤厂生产及管理相关的数据集成、逻辑建模和数据分析,为管理者提供可视化图表展示和辅助决策支持。并探讨其带来... 介绍了商务智能技术的基本概念,分析其在选煤厂中的设计和应用过程。通过商务智能技术在选煤厂智能化建设中的实施,实现选煤厂生产及管理相关的数据集成、逻辑建模和数据分析,为管理者提供可视化图表展示和辅助决策支持。并探讨其带来的预期收益和挑战。 展开更多
关键词 智能化选煤厂 商务智能技术 数据分析平台 管控平台
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Effects of breeding success,age and sex on breeding dispersal of a reintroduced population of the Crested Ibis(Nipponia nippon)in Ningshan County,China 被引量:4
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作者 rong dong Xinping Ye +4 位作者 Lin Zhong Xia Li Min Li Huaqiang Wang Xiaoping Yu 《Avian Research》 CSCD 2018年第4期314-320,共7页
Background: Breeding dispersal is an important ecological process that affects species' population dynamics and colonization of new suitable areas. Knowledge of the causes and consequences of breeding dispersal is... Background: Breeding dispersal is an important ecological process that affects species' population dynamics and colonization of new suitable areas. Knowledge of the causes and consequences of breeding dispersal is fundamental to our understanding of avian ecology and evolution. Although breeding success for a wild and reintroduced population of the Crested Ibis(Nipponia nippon) has been reported, the relationships between individuals' breeding dispersal and their breeding success, age and sex remain unclear.Methods: Ibises' breeding dispersal distance, which is the distance moved by adults between sites of reproduction, was estimated based on the observations of consecutive breeding sites of marked ibis individuals. From observational and capture-recapture data(n as = 102) over 9 years, individuals' breeding dispersal probability in relation to age, sex, and reproductive success wanalyzed via a generalized linear mixed effect modeling approach.Results: Our results show that 55% males and 51% females keep their previous territories following nesting success. Failed breeding attempts increased dispersal probabilities. Both females and males failed in breeding were more likely to disperse with greater distances than successful birds(females: 825 ± 216 m vs 196 ± 101 m, males: 372 Crested Ibis exhibited a female-biased dispersal pattern that the mean dispersal distance± 164 m vs 210 ± 127 m). of females(435 ± 234 m) was much larger than that of males(294 ± 172 m).Conclusion: Our results are fundamental to predict the patterns of breeding dispersal related to reproductive success under different release sites. From the conservation point of view, landscape connectivity between the reintroduced populations should be taken into account in accordance with the distance of breeding dispersal. 展开更多
关键词 BREEDING dispersal BREEDING SUCCESS Generalized linear mixed effect model Crested IBIS Reintroduced POPULATION
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Mechanism of hypothalamic paraventricular nucleus in regulating asthmatic attack 被引量:4
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作者 Jia Liu rong dong +1 位作者 Jian Xiao Nina Liu 《Neural Regeneration Research》 SCIE CAS CSCD 2006年第7期593-596,共4页
BACKGROUND:It has been confirmed that c-fos expression increased markedly in hypothalamic paraventricular nucleus(PVN)during asthmatic attack in rats,and PVN has extensive physiological functions,involving in the regu... BACKGROUND:It has been confirmed that c-fos expression increased markedly in hypothalamic paraventricular nucleus(PVN)during asthmatic attack in rats,and PVN has extensive physiological functions,involving in the regulation of respiratory system,etc.OBJECTIVE:To observe the alteration of electroencephalogram(EEG)and power spectra in PVN during the asthmatic attack,and the alteration of lung function and diaphragmatic muscle discharge after bilateral PVN lesion in asthmatic rats.DESIGN:A randomized control study.SETTING:Laboratory of Physiology and Pharmacology,School of Basic Medical Sciences,Southeast University.MATERIALS:Forty-eight male adult SD rats of 260-300 g were used.The rats were randomly divided into 6 groups(n=8):control group,asthma group,electrolytic lesion of PVN group,KA-induced lesion of PVN group,sham electrolytic lesion of PVN group and sham kainic acid(KA)-induced lesion of PVN group.KA,chicken ovalbumin and aluminum hydroxide were purchased from American Sigma Company.Bordetella pertussis vaccine(Institute of Biological Products of Shanghai);stereotaxic apparatus(JiangwanⅡ,China);lesion-producing device(YC-2 programmable stimulato,Chengdu Instrument Company);MD2000 signal processing system(Nanjing Medical School);data acquisition system(RM6240B,Chengdu Instrument Company).METHODs:The experiments were carried out in the Laboratory of Physiology and Pharmacology,School of Basic Medical Sciences,Southeast University from January to August in 2006.①Rats except for control group were sensitized with an intraperitoneal injection of 100 mg chicken ovalbumin and 100 mg aluminum hydroxide and Bordetella pertussis vaccine containing 5×10^(9) heat-killed in 1 mL of sterile saline.From the fifteenth to seventeenth days rats received three times aerosolized ovalbumin challenge.In rats of the control group and asthma group three steel electrodes were placed into the left PVN(AP-1.8 mm,LR 0.4 mm,OH-7.9 mm),parietal cortex and subcutaneous tissue in lower limb.Lung function tests were carried out simultaneously.Small holes were drilled in the skull to introduce a concentric bipolar electrode in the direction of the PVN in order to perform electrolytic lesion.The electrodes were connected to a lesion-producing device and a current of 1.0-1.5 mA was passed over a period of 10-15 s on each side of the PVN.The rats received 0.5μg/0.5μL of KA in phosphate buffer(0.1 mol/L,pH 7.4),and the speed of infusion was 0.1μL per minute in order to perform KA-induced lesion of PVN.②Three days after operation of lesion,lung function tests were carried out.All the electrode and transducer were connected with data acquisition system.This technique yielded airway resistance(Raw),dynamic compliance(Cdyn),the expiratory time(Te)/the inspiratory time(Ti),minute ventilation volume(MVV),EMGdi frequency and EMGdi integral.③The differences of the measurement data were compared using the t test.MAIN OUTCOME MEASURES:①The alteration of EEG and power spectrum of PVN during asthmatic attack in sensitized rats;②The effects of electrolytic lesion or KA-induced lesion of PVN on lung function in asthmatic rats.RESULTS:All the 48 rats were involved in the analysis of results.①Alteration of EEG and power spectrum:Five minutes after injection of ovalbumin into caudal vena,the breathing rate of the rat was obviously speeded up and the total power spectrum was increased[(18476.71±2140.94),(13838.75±2983.26)mV^(2),P<0.01],the percentage of theδpower andθpower decreased significantly(P<0.01),while the percentage ofαpower andβ1 power were enhanced(P<0.05,0.01).Ten minutes after injection,the EEG power spectrum of PVN further shifted rightward,the total power gradually increased(P<0.01)which suggesting that the intensive hypersynchrony activities of PVN neurons.The percentage ofδpower was decreased significantly(P<0.01),but theα,β1 andβ2 were increased(P<0.01).Twenty-five minutes later,the breathing movements became steady,and the EEG power spectrum of PVN returned to the control level step by step.②The alteration of lung function was detected during asthmatic attack after electrolytic lesion or KA-induced lesions of PVN respectively.It was found that EMGdi frequency,Te/Ti and RL were all decreased(P<0.01),EMGdi integral,MVV and Cdyn were all enhanced(P<0.01),while there were no significant changes in the sham surgery group(P>0.05).CONCLUSION:The excitability of PVN is increased during the asthmatic attack.PVN plays a key role in the regulation of asthma.Both electrolytic and KA lesions of PVN can significantly relieve the asthmatic symptoms of rats,and improve their lung function. 展开更多
关键词 PVN Mechanism of hypothalamic paraventricular nucleus in regulating asthmatic attack
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全生命周期设备管理系统在选煤厂的应用 被引量:9
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作者 荣东 《煤炭加工与综合利用》 CAS 2019年第1期30-32,35,共4页
介绍了选煤厂设备管理中普遍存在的问题;论述了全生命周期设备管理系统的主要内容:规范设备管理流程,对设备的静态资料进行结构化管理;连接PLC自动化控制、在线状态监测等系统,对设备的实时状态和健康状况进行监控;利用工作流(Workflow... 介绍了选煤厂设备管理中普遍存在的问题;论述了全生命周期设备管理系统的主要内容:规范设备管理流程,对设备的静态资料进行结构化管理;连接PLC自动化控制、在线状态监测等系统,对设备的实时状态和健康状况进行监控;利用工作流(Workflow)技术驱动设备的维护与检查机制;应用该系统可提高设备使用寿命与生产效能,降低故障率,提高选煤厂智能化水平和经济效益。 展开更多
关键词 选煤厂 全生命周期设备管理系统 智能化 实时数据库 二维码设备卡片
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内氧化处理铜铬合金的微观组织和性能研究
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作者 荣东 周洪雷 陈小红 《广州化学》 CAS 2022年第4期36-42,共7页
采用熔炼后的Cu-Cr-Ti合金薄板,通过内氧化+冷轧+时效相结合的工艺,制备出了高导电率的Cr_(2)O_(3)铜基复合材料,并通过金相及扫描等分析手段对其微观组织及性能进行了分析。结果表明:随着内氧化的温度和时间增加,内氧化层逐渐增加,内... 采用熔炼后的Cu-Cr-Ti合金薄板,通过内氧化+冷轧+时效相结合的工艺,制备出了高导电率的Cr_(2)O_(3)铜基复合材料,并通过金相及扫描等分析手段对其微观组织及性能进行了分析。结果表明:随着内氧化的温度和时间增加,内氧化层逐渐增加,内氧化层的硬度值和导电率分别在84HV和96%IACS左右;通过冷轧+时效的工艺可以进一步提高合金的导电率和强度,其中,内氧化8h后Cu-Cr-Ti合金在经过冷变形和时效处理,导电率达到了86.2%IACS,抗拉强度达到了460 MPa。表明,该工艺制备出的Cu-Cr-Ti合金具有一定的应用前景。 展开更多
关键词 Cr_(2)O_(3)弥散铜 内氧化 导电率 硬度 抗拉强度
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Factors affecting post-release survival and dispersal of reintroduced Crested Ibis(Nipponia nippon)in Tongchuan City,China
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作者 Min Li Yilamujiang Tuohetahong +5 位作者 Feng Lin rong dong Huaqiang Wang Xiaoman Wu Xinping Ye Xiaoping Yu 《Avian Research》 SCIE CSCD 2022年第3期356-361,共6页
Reintroduction has become a common conservation management tool to restore endangered species in their historical range.However,many attempts have failed to establish self-sustaining populations in the wild.The succes... Reintroduction has become a common conservation management tool to restore endangered species in their historical range.However,many attempts have failed to establish self-sustaining populations in the wild.The success of reintroductions could be improved by varying release strategies.Therefore,it is vital to determine the factors influencing reintroduction outcomes.To better understand the post-release settlement and to optimize the release strategy of the Crested Ibis(Nipponia nippon),we quantified the effects of age,sex,acclimation duration,and the timing of release events on post-release survival and dispersal distance for the released Crested Ibis in Tongchuan City,Shaanxi Province,using a generalized linear mixed effect modeling approach.Our results indicate that 40–56.3%of the released individuals survived the first year following release.Mortality was attributable to flight collisions,starvation,disease,and unknown reasons.The post-release survival probability of ibises showed a negative association with age(estimate=-0.186;95%CI:-0.350 to-0.022;P=0.026),and post-release dispersal distance was affected by the timing of release event(estimate=0.718;95%CI:0.025 to1.253;P=0.042).However,sex and acclimation period duration did not cause detectable differences in postrelease survival probability and dispersal distance.Based on our results,optimal release strategies for establishing a reintroduced population of the Crested Ibis include:(1)release of sub-adults biased and sex ratio balanced initial groups;(2)release during the non-breeding season;and(3)food supplementation immediately after release. 展开更多
关键词 Crested Ibis Post-release dispersal Release strategy REINTRODUCTION Survival probability
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生物土壤结皮提高生态系统碳汇能力研究进展 被引量:1
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作者 邹荣松 王一帆 +4 位作者 荣东 朱建峰 王永利 刘向冶 张华新 《世界林业研究》 CSCD 北大核心 2022年第5期7-12,共6页
生物土壤结皮是由土壤微生物、藻类、地衣和苔藓植物等孢子植物类群与土壤形成的有机复合体,具有极强的生态适应性,广泛分布于陆地生态系统中。对于生物土壤结皮的研究过去主要集中在干旱荒漠地区的生态修复方面,近年来研究发现,生物土... 生物土壤结皮是由土壤微生物、藻类、地衣和苔藓植物等孢子植物类群与土壤形成的有机复合体,具有极强的生态适应性,广泛分布于陆地生态系统中。对于生物土壤结皮的研究过去主要集中在干旱荒漠地区的生态修复方面,近年来研究发现,生物土壤结皮可以有效固定CO_(2)等温室气体,实现生态环境的良性循环。研究生物土壤结皮形成、发育过程的特点,合理推广利用生物土壤结皮,可以改善生态环境、提高固定CO_(2)效率和降低温室效应。文中综述了生物土壤结皮国内外相关研究最新进展,总结了生物土壤结皮的种类和对生态的积极作用,分析其对减缓温室效应的作用机理,并对未来研究重点进行展望,以加深对生物土壤结皮的认识,促进其在环境修复方面的推广应用。 展开更多
关键词 生物土壤结皮 微生物 温室气体 CO_(2)固定
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Uniform Lipschitz Estimates of Homogenization of Elliptic Systems in Divergence Form with Dini Conditions 被引量:1
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作者 rong dong dong-sheng LI Hai-liang ZHANG 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2021年第1期48-68,共21页
The paper is devoted to the homogenization of elliptic systems in divergence form.We obtain uniform interior as well as boundary Lipschitz estimates in a bounded C1,γdomain when the coefficients are Dini continuous,i... The paper is devoted to the homogenization of elliptic systems in divergence form.We obtain uniform interior as well as boundary Lipschitz estimates in a bounded C1,γdomain when the coefficients are Dini continuous,inhomogeneous terms are divergence of Dini continuous functions and the boundary functions have Dini continuous derivatives.The results extend Avellaneda and Lin’s work[Comm.Pure Appl.Math.,40:803-847(1987)],where Holder continuity is the main assumption on smoothness of the data. 展开更多
关键词 HOMOGENIZATION elliptic systems uniform Lipschitz estimates Dini conditions
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