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A SOLUTiON TO A PROBLeM OF GARGANO, LeWiNTeR AND MALeRBA

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Applied Mathematics(A Journal of Chinese Universities) 2004年第3期19卷 239-244页

作者： zverovich i e RUTCOR-Rutgers Center for Operations Research Rutgersthe State University of New Jersey640 Bartholomew RdPiscatawayNJ 08854 8003USA.

A labeled graph is an ordered pair (G, L) consisting of a graph G and its labeling L: V(G) → {1, 2, ..., n}, where n=|V(G)|. An increasing nonconsecutive path in a labeled graph (G, L) is a path (u 1, u 2, ..., u k), k≥1, in G such that L(u i)+1i+1) for all i=1, 2, ..., k?1. The total number of increasing nonconsecutive paths in (G, L) is denoted by d(G, L). The following open problem was proposed by Gargano, Lewinter and Malerba: obtaining a labeling L that produces the largest d(P n, L), where P n is a path of order n. Such a labeling is called optimal. The author have solved this problem. For each n ≥ 5 and for n=3, there are exactly four optimal labelings. either of P 2, P 4 has exactly two optimal labelings. MR Subject Classification 05C38 Keywords labeled graph - increasing nonconsecutive paths

关键词： MR Subject Classification 05C38

The sexually dimorphic expression of glutamate transporters and their implication in pain after spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3317-3329页

作者： Jennifer M.Colón-Mercado Aranza i.Torrado-Tapias iris K.Salgado Jose M.Santiago Samuel e.Ocasio Rivera Dina P.Bracho-Rincon Luis H.Pagan Rivera Jorge D.Miranda Department of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA National institutes of Health National Human Genome Research InstituteBethesdaMDUSA Universidad Central del Caribe School of MedicineBayamónPRUSA University of Puerto Rico Carolina CampusCarolinaPRUSA institute of Neurobiology San JuanPRUSA

in addition to the loss of motor function,~60% of patients develop pain after spinal cord *** cellular-molecular mechanisms are not well understood,but the data suggests that plasticity within the rostral,epicenter,and caudal penumbra of the injury site initiates a cellularmolecular interplay that acts as a rewiring mechanism leading to central neuropathic *** can lead to the formation of new connections triggering abnormal sensory *** excitatory glutamate transporters are responsible for the reuptake of extracellular glutamate which makes them a critical target to prevent neuronal hyperexcitability and *** previous studies showed a sexually dimorphic therapeutic window for spinal cord injury after treatment with the selective estrogen receptor modulator *** this study,we investigated the anti-allodynic effects of tamoxifen in male and female rats with spinal cord *** hypothesized that tamoxifen exerts anti-allodynic effects by increasing the expression of glutamate transporters,leading to reduced hyperexcitability of the secondary neuron or by decreasing aberrant *** and female rats received a moderate contusion to the thoracic spinal cord followed by subcutaneous slow-release treatment of tamoxifen or matrix pellets as a control(placebo).We used von Frey monofilaments and the“up-down method”to evaluate mechanical *** treatment decreased allodynia only in female rats with spinal cord injury revealing a sexdependent *** expression profile of glutamatergic transporters(excitatory amino acid transporter 1/glutamate aspartate transporter and excitatory amino acid transporter 2/glutamate transporter-1)revealed a sexual dimorphism in the rostral,epicenter,and caudal areas of the spinal cord with a pattern of expression primarily on *** rodents showed a significantly higher level of excitatory amino acid transporter-1 expression while male rodents showed increased

关键词： allodynia central neuropathic pain eAAT-1/GLAST eAAT-2/GLT-1 glutamate transporters selective estrogen receptor modulator sexual dimorphism spinal cord injury trauma

Cyclic Stability of Superelasticity in[001]‑Oriented Quenched Ni_(44)Fe_(19)Ga_(27)Co_(10)and Ni_(39)Fe_(19)Ga_(27)Co_(15)Single Crystals

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Acta Metallurgica Sinica(english Letters) 2023年第4期36卷 650-660页

作者： e.e.Timofeeva e.Yu.Panchenko A.S.eftifeeva A.i.Tagiltsev N.Yu.Surikov A.B.Tokhmetova e.i.Yanushonite M.V.Zherdeva i.Karaman Yu.i.Chumlyakov Tomsk State University Novosobornaya Square 1Tomsk 634050Russia Texas A&M University College StationTX 77843USA

The study of the influence of the cobalt content on the cyclic stability of superelasticity(Se)was carried out in quenched Ni_(44)Fe_(19)Ga_(27)Co_(10)and Ni_(39)Fe_(19)Ga_(27)Co_(15)(at.%)single crystals under *** is shown that an increase in the cobalt content leads to embrittlement of the material and a decrease in the cyclic stability of *** Ni_(44)Fe_(19)Ga_(27)Co_(10)single crystals,during the first 20 loading/unloading cycles,the elastic energy relaxation occurs along with the formation of dislocations and residual martensite,which leads to a decrease in critical stress of martensite formation and in stress *** the next 80 cycles,Se becomes more *** is accompanied by a slight change in the *** the contrary,Ni_(39)Fe_(19)Ga_(27)Co_(15)single crystals are characterized by high-strength characteristics,which lead to high Se stability during the first 20 loading/unloading ***,after 20 cycles,a strong degradation of the Se is observed through the formation of microcracks,which ultimately leads to the destruction of the *** results of work are replicable for cycling at different temperatures from all temperature ranges of superelasticity.

关键词： Martensitic transformations Superelasticity Single crystals Cyclic stability Microstructure

enhancing perianal disease management with integrated physical and psychological approaches

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World Journal of Clinical Cases 2025年第2期13卷 59-63页

作者： Uchenna e Okpete Haewon Byeon Department of Digital Anti-aging Healthcare(BK21) Inje UniversityGimhae 50834South Korea

This article provides a comprehensive analysis of the study by Hou et al,focusing on the complex interplay between psychological and physical factors in the postoperative recovery(POR)of patients with perianal *** study sheds light on how illness perception,anxiety,and depression significantly influence recovery *** et al developed a predictive model that demonstrated high accuracy in identifying patients at risk of poor *** article explores the critical role of pre-operative psychological assessment,highlighting the need for mental health support and personalized recovery plans in enhancing POR quality.A multidisciplinary approach,integrating mental health professionals with surgeons,anesthesiologists,and other specialists,is emphasized to ensure comprehensive care for *** study’s findings serve as a call to integrate psychological care into surgical practice to optimize outcomes for patients with perianal diseases.

关键词： Perianal disease Post-operative recovery Anxiety Depression Pain management emotional well-being Multidisciplinary approach

Tungsten ion source under double-pulse laser ablation system

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Chinese Physics B 2017年第9期26卷 285-296页

作者： Ahmed Asaad i Khalil Ashraf i Hafez Mahmoud e elgohary Mohamed A Morsy Department of Laser Sciences and interactions National Institute of Laser Enhanced SciencesCairo UniversityGiza 12613Egypt Central Laboratory of Ministry of electricity CairoEgypt Atomic Research Center Atomic Energy AuthorityCairo 13759Egypt Department of Nuclear engineering Jordan University of Science and Technology IrbidJordan Department of Chemistry King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

New tungsten ion source is produced by using single and double-pulse laser ablation system. Combined collinear Nd：YAG laser beams（266＋1064 nm） are optimized to focus on the sample in air. Optimization of the experimental parameters is achieved to enhance the signal-to-noise ratio of the emission spectra. The velocity distribution of the emitted plasma cloud is carefully measured. The influences of the potential difference between the bias electrodes, laser wavelength and intensity on the current signal are also studied. The results show that the increase in the tungsten ion velocity under the double-pulse lasers causes the output current signal to increase by about three folds. The electron density and temperature are calculated by using the Stark-broadened line profile of tungsten line and Boltzmann plot method of the upper energy levels, respectively. The signal intensity dependence of the tungsten ion angular distribution is also analyzed. The results indicate that the double-pulse laser ablation configuration is more potent technique for producing more metal ion source deposition, thin film formation, and activated plasma-facing component material.

关键词： tungsten ion beam double-pulse lasers ablation system laser ablation system optical instrumentation

Review on high repetition rate and mass production of the cryogenic targets for laser iFe

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High Power Laser Science and engineering 2017年第2期5卷 28-51页

作者： i.V.Aleksandrova e.R.Koresheva Lebedev Physical institute Russian Academy of SciencesMoscow119991Russia National Research Nuclear University MePhl(Moscow engineering Physics institute) Moscow115409Russia

in inertial fusion energy(iFe) research, a considerable attention has recently been focused on the issue of large target fabrication for MJ-class laser facilities. The ignition and high-gain target designs require a condensed uniform layer of hydrogen fuel on the inside of a spherical shell. in this report, we discuss the current status and further trends in the area of developing the layering techniques intended to produce ignition, and layering techniques proposed to high repetition rate and mass production of iFe targets.

关键词： free-standing and line-moving targets high-repetition-rate fuel supply inertial fusion energy target mass production

Aspect of the specialty metals potentials of pegmatites in western Oban Massif,Se Nigeria:A preliminary geochemical approach

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Chinese Journal Of Geochemistry 2012年第4期31卷 355-361页

作者： Oden M.i. igonor e.e. Department of Geology University of CalabarP.M.B.1115 CalabarNigeria Petra Prospectors Limited Nigeria

Minerals in general and rare-metals in particular are of invaluable importance in the development and industrialization of any *** is true as they could affect a nation's national income,employment ratio,Gross National Product,and its entire *** study area(western Oban Massif-Se Nigeria) was investigated for its specialty metals bearing potentials because of(1) its geology,which is similar to other specialty metals bearing areas of the world;(2) past works,which points to the area as a likely source of economic deposit of such metals;and(3) the soaring cost of these rare metals in the light of recent upsurge in global information/telecommunication *** from the study,show that only cesium(Cs) and beryllium(Be) show minute signs or indications of enrichment if properly *** these metals should be studied in details to ascertain their economic *** rocks are too deficient in the other rare-metals(lithium,zirconium,strontium,tantalite,niobium,tungsten,gallium,and chromium) to warrant further analysis.

关键词：特种金属尼日利亚地球化学方法电位伟晶岩稀有金属矿地块国民生产总值

Flow-Field of an Axisymmetric Lobed Mixer

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Journal of Thermal Science 2004年第1期13卷 40-45页

作者： i.Yimer S.Manipurath i.Campbell W.e.Carscallen Gas Turbine environmental Research Centre Aerodynamics LabInstitute for Aerospace ResearchNational Research Council Canada1200 Montreal RoadOttawaOntarioCanadaK1A 0R6

The flow-field of a fuel/air mixing system with an axisymmetric lobed mixer was numerically investigated. Large-scale streamwise vortices are formed immediately downstream of the mixer trailing edge, stretched further downstream, and finally broken into fragments where more intense mixing occurs. Both numerical and experimental results indicate that the length required for streamwise vortices breakdown in the confined flow-field of an axisymmetric lobed mixer is much shorter than that in the case of planar lobed mixers subject to parallel freestreams. For the conditions studied, the streamwise vortices start to breakdown at three wavelengths downstream of the mixer trailing edge.

关键词： axisymmetric lobed mixer confined flow fuel/air mixing

A Novel Contactless Method for Characterization of Semiconductors：Surface electron Bean induced Voltage in Scanning electron Microscopy

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Chinese Physics Letters 2002年第9期19卷 1329-1332页

作者：朱世秋 e.i.RAU 等 NationalLaboratoryforSuperlatticesandMicrostructures InstituteofSemiconductorsChineseAcademyofSciencesBeijing100083 DepartmentofPhysics MoscowStateUniversityMoscow119899Russia

We present a novel contactless and nondestructive method called the surface electron beam induced voltage (SeBiV) method for characterizing semiconductor materials and devices. The SeBiV method is based on the detection of the surface potential induced by electron beams of scanning electron microscopy (SeM). The core part of the SeBiV detection set-up is a circular metal detector placed above the sample surface. The capacitance between the circular detector and whole surface of the sample is estimated to be about 0.64pf. it is large enough for the detection of the induced surface potential. The irradiation mode of electron beam (e-beam) influences the signal generation. When the e-beam irradiates on the surface of semiconductors continuously, a differential signal is obtained. The real distribution of surface potentials can be obtained when a pulsed e-beam with a fixed frequency is used for irradiation and a lock-in amplifier is employed for detection. The polarity of induced potential depends on the structure of potential barriers and surface states of samples. The contrast of SeBiV images in SeM changes with irradiation time and e-beam intensity.

关键词： Scanning electron microscopy