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New Distributed Positioning Algorithm Based on Centroid of Circular Belt for Wireless Sensor Networks

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International Journal of Automation and computing 2007年第3期4卷 315-324页

作者： xu-Zhi Lai Simon X. yang Gui-xiu Zeng Jin-Hua She Min Wu School of Information Science ＆ Engineering Central South UniversityChangsha 410083PRC Advanced Robotics and Intelligent Systems Laboratory School of EngineeringUniversity of GuelphGuelphOntario NIG 2W1Canada School of Bionics Tokyo University of Technology1404-1 KatakuraHachiojiTokyo 192-0982Japan

This paper presents a new distributed positioning algorithm for unknown nodes in a wireless sensor network. The algorithm is based exclusively on connectivity. First, assuming that the positions of the anchor nodes are already known, a circular belt containing an unknown node is obtained using information about the anchor nodes that are in radio range of the unknown node, based on the geometric relationships and communication constraints among the unknown node and the anchor nodes. Then, the centroid of the circular belt is taken to be the estimated position of the unknown node. Since the algorithm is very simple and since the only communication needed is between the anchor nodes and the unknown node, the communication and computational loads are very small. Furthermore, the algorithm is robust because neither the failure of old unknown nodes nor the addition of new unknown nodes influences the positioning of unknown nodes to be located. A theoretical analysis and simulation results show that the algorithm does not produce any cumulative error and is insensitive to range error, and that a change in the number of sensor nodes does not affect the communication or computational load. These features make this algorithm suitable for all sizes of low-power wireless sensor networks.

关键词： Positioning wireless sensor networks circular belt algorithm performance.

In situ tracking of the lithiation and sodiation process of disodium terephthalate as anodes for rechargeable batteries by Raman spectroscopy

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Nano Research 2024年第1期17卷 245-252页

作者： xiu-Mei Lin Chong Han Xin-Tao yang Jia-Sheng Lin Wei-Qiang yang Hong-xu Guo Yao-Hui Wang Jin-Chao Dong Jian-Feng Li Department of Chemistry and Environment Science Fujian Province University Key Laboratory of Analytical ScienceMinnan Normal UniversityZhangzhou 363000China College of Energy College of Chemistry and Chemical EngineeringCollege of MaterialsState Key Laboratory of Physical Chemistry of Solid SurfacesiChEMXiamen UniversityXiamen 361005China Institute of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China

Organic compounds represent an appealing group of electrode materials for rechargeable batteries due to their merits of biomass,sustainability,environmental friendliness,and *** terephthalate(Na_(2)C_(8)H_(4)O_(4),Na_(2)TP),an organic salt with a theoretical capacity of 255 mAh·g^(-1),is electroactive towards both lithium and ***,its electrochemical energy storage(EES)process has not been directly observed via in situ characterization techniques and the underlying mechanisms are still under ***,in situ Raman spectroscopy was employed to track the de/lithiation and de/sodiation processes of *** appearance and then disappearance of the–COOLi Raman band at 1625 cm^(-1) during the de/lithiation,and the increase and then decrease of the–COONa Raman band at 1615 cm^(-1) during the de/sodiation processes of Na2TP elucidate the one-step with the 2Li+or 2Na+transfer *** also found that the inferior cycling stability of Na2TP as an anode for sodium-ion batteries(SIBs)than lithium-ion batteries(LIBs)could be due to the larger ion radium of Na+than Li+,which results in larger steric resistance and polarization during *** Na2TP,therefore,shows greater changes in spectra during de/sodiation than de/*** expect that our findings could provide a reference for the rational design of organic compounds for EES.

关键词： disodium terephthalate(Na_(2)C_(8)H_(4)O_(4) Na2TP) in situ Raman spectroscopy de/lithiation de/sodiation mechanisms

Histone deacetylase HDA710 controls salt tolerance by regulating ABA signaling in rice

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Journal of Integrative Plant Biology 2021年第3期63卷 451-467页

作者： Farhan Ullah Qiutao xu Yu Zhao Dao-xiu Zhou National Key Laboratory of Crop Genetic Improvement Huazhong Agriculture UniversityWuhan 430030China Institute of Plant Science of Paris-Saclay(IPS2) University Paris-SaclayCNRSINRAEOrsay 91405France

Plants have evolved numerous mechanisms that assist them in withstanding environmental *** deacetylases(HDACs)play crucial roles in plant stress responses;however,their regulatory mechanisms remain poorly ***,we explored the function of HDA710/OsHDAC2,a member of the HDAC RPD3/HDA1 family,in stress tolerance in rice(Oryza sativa).We established that HDA710 localizes to both the nucleus and cytoplasm and is involved in regulating the acetylation of histone H3 and H4,specifically targeting H4 K5 and H4 K16 under normal ***710 transcript accumulation levels were strongly induced by abiotic stresses including drought and salinity,as well as by the phytohormones jasmonic acid(JA)and abscisic acid(ABA).hda710 knockout mutant plants showed enhanced salinity tolerance and reduced ABA sensitivity,whereas transgenic plants overexpressing HDA710 displayed the opposite ***,ABAand salt-stress-responsive genes,such as OsLEA3,OsABI5,OsbZIP72,and OsNHX1,were upregulated in hda710 compared with wild-type *** expression differences corresponded with higher levels of histone H4 acetylation in gene promoter regions in hda710 compared with the wild type under ABA and salt-stress ***,these results suggest that HDA710 is involved in regulating ABA-and salt-stress-responsive genes by altering H4 acetylation levels in their promoters.

关键词： abscisic acid HDA710 histone acetylation rice salinity

In vitro drug resistance of clinical isolated Brucella against antimicrobial agents

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Asian Pacific Journal of Tropical Medicine 2013年第11期6卷 921-924页

作者： xiu-Li xu Xiao Chen Pei-Hong yang Jia-Yun Liu Xiao-Ke Hao Laboratory Department Xijing HospitalFourth Military Medical University

Objective:To explore the antibiotic resistance of Brucella melitensis and instruct rational use of antimicrobial agents in clinical treatment of Brucella ***:Bacteria were cultured and identified by BACTEC9120 and VTTEK Ⅱ automicrobic system.E-test was used to detect the minimal inhibitory concentration(MIC) of antimicrobial agents in the drug susceptivity ***:A total of 19 brucella strains(all Brucella melitensis) were isolated from 19 patients,who had fever between January 2010 and June 2012,and 17 samples were blood,one was bone marrow,the other sample was cerebrospinal *** MIC range of ceftazidime was 2.0-8.0 mg/L,rifampicin was 0.06-2.0 mg/L,amikacin was 4.0-12.0 mg/L,levofloxacin was 2.0-8.0 mg/ L,doxycycline was 8.0-32.0 mg/L,sulfamethoxazole-trimethoprim was 4.0-16.0 mg/L,ampicillin was 1.5-2.0 mg/L and gentamicin was 0.50-0.75 mg/***:The drugs used in this experiment cover common drugs for treating ***,the results are consistent with clinical *** is suggested personalized regimen according to patients' status in treatment of Brucella.

关键词： Brucella Antimicrobial agents Minimal inhibitory concentration

A Marine Environment Early Warning Algorithm Based on Marine Data Sampled by Multiple Underwater Gliders

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China Ocean Engineering 2019年第2期33卷 172-184页

作者： xu Zhen-zhen LI Lu YU Jian-cheng xu xiu-juan JIA Ming-fei School of Software Technology Dalian University of Technology The State Key laboratory of Robotics Shenyang Institute of AutomationCAS

This study analyzes and summarizes seven main characteristics of the marine data sampled by multiple underwater gliders. These characteristics such as the big data volume and data sparseness make it extremely difficult to do some meaningful applications like early warning of marine environment. In order to make full use of the sea trial data, this paper gives the definition of two types of marine data cube which can integrate the big marine data sampled by multiple underwater gliders along saw-tooth paths, and proposes a data fitting algorithm based on time extraction and space compression(DFTS) to construct the temperature and conductivity data cubes. This research also presents an early warning algorithm based on data cube(EWDC) to realize the early warning of a new sampled data *** results show that the proposed methods are reasonable and effective. Our work is the first study to do some realistic applications on the data sampled by multiple underwater vehicles, and it provides a research framework for processing and analyzing the big marine data oriented to the applications of underwater gliders.

关键词： big marine data early warning marine environment underwater gliders

Nursing a patient with latent autoimmune diabetes in adults with insulin-related lipodystrophy,allergy,and exogenous insulin autoimmune syndrome:A case report

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World Journal of Clinical Cases 2022年第20期10卷 7163-7170页

作者： Fang He Ling-Ling xu Yu-xiu Li Ya-xiu Dong Department of Endocrinology Peking Union Medical College HospitalBeijing 100730China

BACKGROUND Latent autoimmune diabetes in adults(LADA)is a special type of type 1 diabetes *** the early stages,patients with LADA are treated with oral ***,insulin treatment is still required as islet function gradually *** patients have developed insulin allergy,clinical treatment and nursing care become very *** SUMMARY Here,we report a case of LADA with insulin-related lipodystrophy,allergy,and exogenous insulin autoimmune syndrome during insulin treatment,thus making it very difficult to effectively control glucose levels with *** attempted subcutaneous injection and an insulin pump to desensitize the patient’s response to insulin,and finally assisted the doctor to select the appropriate insulin treatment for the *** describe the management of this patient from a nursing *** We summarize the nursing experience of a case with complex insulin allergy requiring desensitization *** approach is very practical and can be applied to similar patients needing insulin desensitization.

关键词： Insulin allergy Desensitization Lipodystrophy Exogenous insulin autoimmune syndrome Skin test Nursing Case report

Perilipin Gene 1237 T>C Polymorphism is not Associated with Obesity Risk in Northern Chinese Han Adults

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Biomedical and Environmental Sciences 2009年第5期22卷 442-447页

作者： DONG-SHENG HU JING XIE DA-HAI YU GuO-HENG xu JIE LU JIN-xiu yang CHUN-yang LI YAN-YAN LI Department of Epidemiology College of Public Health Zhengzhou University Zhengzhou 450001 Henan China Population Health Unit Centre for Eye Research Australia University of Melbourne Level 132 Gisborne Street East Melbourne VIC 3002 Australia Department of Evidence-Based Medicine and Division of Population Genetics Cardiovascular Institute and Fuwai Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China Department of Physiology Beijing University Medical Sciences Center Beijing 100083 China

Objective To identify the association between PLIN 1237 polymorphism and obesity in Chinese Han adults. Methods A total of 994 adults （157 obese subjects, 322 overweight subjects, and 515 normal controls） were recruited from two rural communities. PLIN 1237 polymorphism was genotyped by polymerase chain reaction-restriction-fragment-length-polymorphism （PCR-RFLP）. Association between PLIN polymorphisms and obesity status was estimated by ordinal logistic regression. Results The three genotypes of,PLIN 1237 were detected with a percentage of 54.3%, 37.1%, and 8.6% in TT, TC, and CC genotypes, respectively. For the PLIN 1237 polymorphism locus, the frequency of alleles T and C was 0.73 and 0.27, respectively. The PLIN 1237 polymorphisms were in Hardy-Weinberg equilibrium. PLIN 1237 polymorphism was not associated with obesity. The odds ratio for overweight or obesity for the CC＋TC genotype was 0.8（0.4, 1.4） in women （P=-0.4） and 0.6 （0.3, 1.3） in men （P=-0.2） after adjustment for age, education, household income and alcohol consumption, smoking, and physicalactivity. Conclusion Chinese Han adults have a lower frequency of variant-allele C in PLIN1237. PLIN1237 T〉C polymorphism is not significantly associated with obesity in northern Chinese adults.

关键词： Perilipin Polymorphism Obesity

Antibiotic and glucocorticoid-induced recapitulated hematological remission in acute myeloid leukemia:A case report and review of literature

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World Journal of Clinical Cases 2022年第22期10卷 7890-7898页

作者： Xiao-Yun Sun Xiao-Dong yang Xiao-Qiu yang Bo Ju Nuan-Nuan xiu Jia xu Xi-Chen Zhao Department of Hematology The Central Hospital of Qingdao West Coast New AreaQingdao 266555Shandong ProvinceChina Department of Pharmacology The Central Hospital of Qingdao West Coast New AreaQingdao 266555Shandong ProvinceChina

BACKGROUND Leukemic hematopoietic cells acquire enhanced self-renewal capacity and impaired *** emergence of symptomatic leukemia also requires the acquisition of a clonal proliferative *** leukemia patients usually experience an aggressive ***,spontaneous remission occasionally occurs in patients with acute myeloid leukemia(AML),most frequently after recovery from a febrile episode,and this is generally attributed to the triggering of antineoplastic *** may be another explanation for the spontaneous remission as implicated in this *** SUMMARY A 63-year-old Chinese man presented with high fever,abdominal pain and urticaria-like skin *** was diagnosed with AML-M4 with t(8;21)(q22;q22)/RUNX1-RUNX1T1 based on morphological,immunological,cytogenetic and molecular *** had a complex chromosome rearrangement of 48,XY,t(8;21)(q22;q22),+13,+13[9]/49,idem,+mar[9]/49,idem,+8[2].He also had a mutated tyrosine kinase domain in fms-like tyrosine kinase 3 *** was treated with antibiotics and glucocorticoids for gastrointestinal infection and urticaria-like skin *** infection and skin lesions were quickly ***,he achieved hematological remission along with resolution of the febrile episode,gastrointestinal symptoms and skin ***,after relapse,repeating these treatments resulted in a return to hematological ***,he demonstrated strong resistance to antibiotic and glucocorticoid treatment after the second relapse and died of sepsis from bacterial infection with multidrug *** main clinical feature of this patient was that symptomatic AML emerged with flaring of the gut inflammatory disorder and it subsided after resolution of the *** from the present case raises the possibility that in a subgroup of AML patients,the proliferative advantage of leukemia cells may critically require the presence of inflammatory ***

关键词： Acute myeloid leukemia Fms-like tyrosine kinase 3 tyrosine kinase domain Glucocorticoid Antibiotic Spontaneous remission Gastrointestinal infection Case report

Deep learning projects future warming-induced vegetation growth changes under SSP scenarios

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Advances in Climate Change Research 2022年第2期13卷 251-257页

作者： Zhi-Ting CHEN Hong-Yan LIU Chong-yang xu xiu-Chen WU Bo-Yi LIANG Jing CAO Deliang CHEN College of Urban and Environmental Sciences and MOE Laboratory for Earth Surface Processes Peking UniversityBeijing 100871China Faculty of Geographical Sciences Beijing Normal UniversityBeijing 100875China Department of Earth Sciences University of GothenburgGothenburg 40530Sweden

Climate warming has been projected to enhance vegetation growth more strongly in higher latitudes than in lower latitudes,but different projections show distinct regional *** employing big data analysis(deep learning),we established gridded,global-scale,climate-driven vegetation growth models to project future changes in vegetation growth under SSP *** projected no substantial trends of vegetation growth change under the sustainable development scenario(SSP1-1.9)by the end of the 21st ***,the increase of vegetation growth driven by climate warming shows distinct regional variability under the scenario representing high carbon emissions and severe warming(SSP5-8.5),especially in Northeast Asia where growth could increase by(6.00%±4.21%).This may be attributed to the high temperature sensitivities of the deciduous needleleaf forests and permanent wetlands in these *** the temperature sensitivity that is defined as permutation importance in deep learning is greater than 0.05,the increase in vegetation growth will be more *** addition,an extreme temperature increase across grasslands,as well as changing land-use management in northern China may also influence the vegetation growth in the *** results suggest that the sustainable development scenario can maintain stable vegetation growth,and it may be a reliable way to mitigate global warming due to potential climate feedbacks driven by vegetation changes in boreal *** needleleaf forests will be a centre of greening in the future,and it should become the focus of future vegetation dynamics modelling studies and projections.

关键词： Vegetation growth Climate change Deep learning Climate sensitivity Future projection