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QCD sum rule study of J^(P)=1^(±)exotic states with two heavy quarks in the molecular picture

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Chinese Physics C 2024年第6期48卷 31-37页

作者： T.m.aliev S.Bilmis m.Savcı Department of Physics Middle East Technical UniversityAnkara06800Turkey TUBITAK ULAKBIm Ankara06510Turkey

In this study,the spectroscopic parameters of exotic molecular states composed of mesons containing two heavy quarks(scalar-axial and pseudoscalar-axial meson combinations)are investigated within the QCD sum *** findings reveal that molecular states containing charm quarks do not form bound states,whereas states with b-quarks can form exotic molecular *** observation has significant implications for understanding the structure of these exotic states.

关键词： QCD sum rules exotic mesons molecular states

radiative Blood-Based Hybrid Copper-Graphene Nanoliquid Flows along a Source-Heated Leaning Cylinder

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Computer modeling in Engineering & Sciences 2024年第4期139卷 1017-1037页

作者： Siti nur Ainsyah Ghani Noor Fadiya mohd Noor Institute of mathematical Sciences Faculty of ScienceUniversiti MalayaKuala Lumpur50603Malaysia Center for Data Analytics Consultancy&Services(Um-CDACS) Faculty of ScienceUniversiti MalayaKuala Lumpur50603Malaysia

Variant graphene,graphene oxides(GO),and graphene nanoplatelets(GNP)dispersed in blood-based copper(Cu)nanoliquids over a leaning permeable cylinder are the focus of this *** forms of graphene are highly beneficial in the biological and medical fields for cancer therapy,anti-infection measures,and drug *** non-Newtonian Sutterby(blood-based)hybrid nanoliquid flows are generalized within the context of the Tiwari-Das model to simulate the effects of radiation and heating *** governing partial differential equations are reformulated into a nonlinear set of ordinary differential equations using similar transformational *** equations are then transformed into boundary value problems through a shooting technique,followed by the implementation of the bvp4c tool in *** influences of various parameters on the model’s nondimensional velocity and temperature profiles,reduced skin friction,and reduced Nusselt number are presented for detailed *** results indicated that Cu-GNP/blood and Cu-GO/blood hybrid nanofluids exhibit the lowest and highest velocity distributions,respectively,for increased nanoparticles volume fraction,curvature parameter,Sutterby fluid parameter,Hartmann number,and wall permeability ***,opposite trends are observed for the temperature distribution for all considered parameters,except the mixed convection *** in the reduced skin friction magnitude and the reduced Nusselt number with higher values of graphene/GO/GNP nanoparticle volume fraction are also ***,GNP is identified as the superior heat conductor,with an average increase of approximately 5%and a peak of 7.8%in the reduced Nusselt number compared to graphene and GO nanoparticles in the Cu/blood nanofluids.

关键词： Hybrid nanofluid sutterby fluid tiwari-das model thermal radiation graphene graphene oxides graphene nanoplatelets

Unscented Kalman filter for a low-cost GNSS/ImU-based mobile mapping application under demanding conditions

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Geodesy and Geodynamics 2024年第2期15卷 166-176页

作者： mokhamad nur Cahyadi Tahiyatul Asfihani Hendy Fitrian Suhandri risa Erfianti Department of Geomatics Engineering Institut Teknologi Sepuluh NopemberSurabaya 6011Indonesia research Center of marine and Earth Science Technology Directorate of Research and Community ServiceInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia Department of mathematics Institut Teknologi Sepuluh NopemberSurabaya 60111Indonesia Centre of Studies for Surveying Science&Geomatics Universiti Teknologi Mara(UiTM)Shah Alam 40450Malaysia

For the last two decades,low-cost Global Navigation Satellite System(GNSS)receivers have been used in various *** receivers are mini-size,less expensive than geodetic-grade receivers,and in high *** of these outstanding features,low-cost GNSS receivers are potentially poorer hardwares with internal signal processing,resulting in lower *** typically come with low-cost GNSS antenna that has lower performance than their counterparts,particularly for multipath ***,this research evaluated the low-cost GNSS device performance using a high-rate kinematic *** this purpose,these receivers were assembled with an Inertial measurement Unit(ImU)sensor,which actively transmited data on acceleration and orientation rate during the *** position and navigation parameter data were obtained from the ImU readings,even without GNSS signals via the U-blox F9r GNSS/ImU device mounted on a *** research was conducted in an area with demanding conditions,such as an open sky area,an urban environment,and a shopping mall basement,to examine the device’s *** data were processed by two approaches:the Single Point Positioning-ImU(SPP/ImU)and the Differential GNSS-ImU(DGNSS/ImU).The Unscented Kalman Filter(UKF)was selected as a filtering algorithm due to its excellent performance in handling nonlinear system *** result showed that integrating GNSS/ImU in SPP processing mode could increase the accuracy in eastward and northward components up to 68.28%and 66.64%.Integration of DGNSS/ImU increased the accuracy in eastward and northward components to 93.02%and 93.03%compared to the positioning of standalone *** addition,the positioning accuracy can be improved by reducing the ImU noise using low-pass and high-pass *** application could still not gain the expected position accuracy under signal outage conditions.

关键词： LoW-cost GNSS GNSS/ImU Single Point Positioning-ImU(SPP/ImU) Differential GNSS-ImU(DGNSS/ImU) Unscented Kalman Filter(UKF) Outageconditions

Experiment and simulation to determine the optimum orientation of building-integrated photovoltaic on tropical building façades considering annual daylight performance and energy yield

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Energy and Built Environment 2024年第3期5卷 414-425页

作者： rizki A.mangkuto Dhian nur Aziz T.Tresna Ikhwan m.Hermawan Justin Pradipta nurul Jamala Beta Paramita Atthaillah Building Physics research Group Faculty of Industrial TechnologyInstitut Teknologi BandungLabtek VIJl.Ganesha 10Bandung 40132Indonesia Engineering Physics Program Faculty of Industrial TechnologyInstitut Teknologi BandungLabtek VIJl.Ganesha 10Bandung 40132Indonesia Engineering Physics research Group Faculty of Industrial TechnologyInstitut Teknologi BandungLabtek VIJl.Ganesha 10Bandung 40132Indonesia Department of Architecture Faculty of EngineeringHasanuddin UniversityJl.Poros Malino Km.6Gowa 92171Indonesia Architecture Study Program Faculty of Technology and Vocational EducationUniversitas Pendidikan IndonesiaJl.Dr.Setiabudhi 229Bandung 40152Indonesia Architecture Program Faculty of EngineeringUniversitas MalikussalehJl.Cot Teungku NieAceh Utara 24355Indonesia

Building-Integrated Photovoltaic(BIPV)on vertical façades is a potential PV application in today’s *** performance of BIPV on façades is significantly influenced by the façade *** tropical cities,the optimum façade orientation,in terms of maximum energy yield and daylight performance,cannot be simply determined,due to relatively symmetrical sun path throughout the *** study therefore aims to determine the optimum orientation for BIPV on tropical building faç*** achieve the objective,experiment,modelling,and computational simulation are conducted to evaluate the BIPV energy yield and to predict the indoor daylight performance in a scale-model building with a 105Wp monocrystalline silicon PV,facing each cardinal orienta-tion in Bandung,*** South orientation yields practically zero ASE_(1000,250),providing the best annual daylight performance,and yielding the most desirable value in four out of five daylight *** greatest annual energy yield is at the North orientation,providing 179-186 kWh(95%prediction interval)per year,but with larger uncertainty compared to that at the South,due to direct sunlight *** on three different objective functions,the South orientation is considered optimum for placing the BIPV panel on the prototype façade in the location.

关键词： Building-integrated photovoltaic Orientation Daylight metric Energy yield Tropical building façade

Nonlinear dynamic modeling of planar moving Timoshenko beam considering non-rigid non-elastic axial effects

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Applied mathematics and mechanics(English Edition) 2024年第3期45卷 479-496页

作者： m.ABBASI GAVArI m.r.HOmAEINEZHAD Faculty of mechanical Engineering K.N.Toosi University of TechnologyTehran 19991-43344Iran

Due to the importance of vibration effects on the functional accuracy of mechanical systems,this research aims to develop a precise model of a nonlinearly vibrating single-link mobile flexible *** manipulator consists of an elastic arm,a rotary motor,and a rigid carrier,and undergoes general in-plane rigid body motion along with elastic transverse *** accurately model the elastic behavior,Timoshenko’s beam theory is used to describe the flexible arm,which accounts for rotary inertia and shear deformation *** applying Newton’s second law,the nonlinear governing equations of motion for the manipulator are derived as a coupled system of ordinary differential equations(ODEs)and partial differential equations(PDEs).Then,the assumed mode method(Amm)is used to solve this nonlinear system of governing equations with appropriate shape *** assumed modes can be obtained after solving the characteristic equation of a Timoshenko beam with clamped boundary conditions at one end and an attached mass/inertia at the *** addition,the effect of the transverse vibration of the inextensible arm on its axial behavior is *** the axial rigidity,the effect makes the rigid body dynamics invalid for the axial behavior of the ***,numerical simulations are conducted to evaluate the performance of the developed model,and the results are compared with those obtained by the finite element *** comparison confirms the validity of the proposed dynamic model for the *** to the mentioned features,this model can be reliable for investigating the system’s vibrational behavior and implementing vibration control algorithms.

关键词： planar moving Timoshenko beam non-rigid non-elastic axial effect as-sumed mode method(Amm) nonlinear motion analysis

Pile foundation in alternate layered liquefiable and non-liquefiable soil deposits subjected to earthquake loading

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 359-376页

作者： Praveen Huded m Suresh r Dash LEA Associates South East Asia Pvt.Ltd. New Delhi 110044India Indian Institute of Technology Bhubaneswar Khurda 752050India

Pile foundations are still the preferred foundation system for high-rise structures in earthquake-prone *** foundations have experienced failures in past earthquakes due to *** on pile foundations in liquefiable soils has primarily focused on the pile foundation behavior in two or three-layered soil ***,in natural occurrence,it may occur in alternative layers of liquefiable and non-liquefiable ***,the experimental and/or numerical studies on the layered effect on pile foundations have not been widely addressed in the *** of the design codes across the world do not explicitly mention the effect of sandwiched non-liquefiable soil layers on the pile *** the present study,the behavior of an end-bearing pile in layered liquefiable and non-liquefiable soil deposit is studied *** study found that the kinematic bending moment is higher and governs the design when the effect of the sandwiched non-liquefied layer is considered in the analysis as opposed to when its effect is ***,ignoring the effect of the sandwiched non-liquefied layer in a liquefiable soil deposit might be a nonconservative design approach.

关键词： pile foundation liquefaction alternately layered soil fixity effect layered effect

Inflammatory responses in esophageal mucosa before and after laparoscopic antireflux surgery

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World Journal of Gastrointestinal Surgery 2024年第3期16卷 871-881页

作者： Pelin Ergun Sezgi Kipcak nur Selvi Gunel Eser Yildirim Sozmen Serhat Bor Department of Otolaryngology Medical College of WisconsinMilwaukeeWI 53226United States Division of Gastroenterology Ege UniversityFaculty of MedicineEge Reflux GroupIzmir 35100Turkiye Department of medical Biology Ege UniversityFaculty of MedicineIzmir 35100Turkiye Department of medical Biochemistry Ege UniversityFaculty of MedicineIzmir 35100Turkiye

BACKGrOUND Currently,the primary treatment for gastroesophageal reflux is acid suppression with proton pump inhibitors,but they are not a cure,and some patients don’t respond well or refuse long-term ***,alternative therapies are needed to understand the disease and develop better *** anti-reflux surgery(LArS)can resolve symptoms of these patients and plays a significant role in evaluating esophageal healing after preventing harmful *** LArS improves typical gastroesophageal reflux symptoms in most patients,main-ly by reducing the exposure time to gastric contents in the ***-ration of the inflammatory response and a recovery response in the esophageal epithelium is expected following the cessation of the noxious *** To explore the role of inflammatory biomolecules in LArS and assess the time required for esophageal epithelial *** Of 22 patients with LArS(pre-and post/5.8±3.8 months after LArS)and 25 healthy controls(HCs)were *** subjects underwent 24-h multichannel intraluminal impedance-pH monitoring and upper gastrointestinal endoscopy,during which esophageal biopsy samples were collected using endoscopic *** molecules in esophageal biopsies were investigated by reverse transcription-polymerase chain reaction and multiplex-enzyme-linked immunosorbent *** Post-LArS samples showed significant increases in proinflammatory cytokines[interleukin(IL)-1β,interferon-γ,C-X-C chemokine ligand 2(CXCL2)],anti-inflammatory cytokines[CC chemokine ligand(CCL)11,CCL13,CCL17,CCL26,CCL1,CCL7,CCL8,CCL24,IL-4,IL-10],and homeostatic cytokines(CCL27,CCL20,CCL19,CCL23,C-CL25,CXCL12,migration inhibitory factor)compared to both HCs and pre-LArS ***17 and CCL21 levels were higher in pre-LArS than in HCs(PmrNA expression levels of AKT1,fibroblast growth factor 2,HrAS,and mitogen-activated protein kinase 4 were significantly decreased post-LArS vs pre-LArS.

关键词： Anti-reflux surgery Gastroesophageal reflux disease Cytokine Inflammatory response Esophagus

Comparison of vergence mechanisms between university students with good and poor sleep quality

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 353-358页

作者： Pui Juan Woi Joyce Yi Ling Lu mohd Izzuddin Hairol Wan nur Amirah Ibrahim Optometry and Vision Science Programme Center for Community Health Studies(ReaCH)Faculty of Health SciencesUniversiti Kebangsaan MalaysiaKuala Lumpur 50300Malaysia Centre of Optometry Studies Faculty of Health SciencesUniversiti Teknologi MARASelangor BranchPuncak Alam CampusSelangor 42300Malaysia

AIm:To compare the vergence mechanisms between good and poor sleepers in university ***:A total of 64 university students were recruited in this *** validated malay version of Pittsburgh Sleep Quality Index questionnaire(PSQI-m)was used to measure the participants’sleep quality over the past *** were categorized as good sleepers(n=32)and poor sleepers(n=32)based on the PSQI-m *** and fusional vergences were measured at distance and ***-Whitney U test was used to compare heterophoria,negative fusional vergence(NFV),and positive fusional vergence(PFV)at distance and near between good and poor *** correlation analysis was used to study the relationship between PSQI-m score and PFV at ***:Both distance and near heterophorias were not significantly different between good and poor sleepers(P>0.05).There was a difference in distance PFV(Pr sleepers,but not in distance NFV,near NFV,and near PFV(P>0.05).Distance PFV was negatively correlated with PSQI-m score(rs=-0.33,Prsity students with poor sleep quality demonstrates a reduced ability to maintain fusion with increasing convergence demand at *** quality assessment during binocular vision examination in university students is recommended.

关键词： binocular vision vergence sleep quality university students

Kinematic analysis of flexible bipedal robotic systems

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Applied mathematics and mechanics(English Edition) 2024年第5期45卷 795-818页

作者： r.FAZEL A.m.SHAFEI S.r.NEKOO Department of mechanical Engineering Shahid Bahonar University of KermanKerman ***Iran Departamento de Ingenieria de Sistemas y Automatica Escuela Técnica Superior de IngenieriaUniversidad de SevillaSeville 41092Spain

In spite of its intrinsic complexities,the passive gait of bipedal robots on a sloping ramp is a subject of interest for numerous *** distinguishes the present research from similar works is the consideration of flexibility in the constituent links of this type of robotic *** is not a far-fetched assumption because in the transient(impact)phase,due to the impulsive forces which are applied to the system,the likelihood of exciting the vibration modes increases ***,the human leg bones that are involved in walking are supported by viscoelastic muscles and ***,for achieving more exact results,it is essential to model the robot links with viscoelastic *** this end,the Gibbs-Appell formulation and Newton's kinematic impact law are used to derive the most general form of the system's dynamic equations in the swing and transient phases of *** most important issue in the passive walking motion of bipedal robots is the determination of the initial robot configuration with which the system could accomplish a periodic and stable gait solely under the effect of gravitational *** extremely unstable nature of the system studied in this paper and the vibrations caused by the impulsive forces induced by the impact of robot feet with the inclined surface are some of the very serious challenges encountered for achieving the above-mentioned *** overcome such challenges,an innovative method that uses a combination of the linearized equations of motion in the swing phase and the algebraic motion equations in the transition phase is presented in this paper to obtain an eigenvalue *** solving this problem,the suitable initial conditions that are necessary for the passive gait of this bipedal robot on a sloping surface are *** effects of the characteristic parameters of elastic links including the modulus of elasticity and the Kelvin-Voigt coefficient on the walking stability of this type of

关键词： bipedal robot flexible link swing phase transient phase eigenvalue problem Kelvin-Voigt coefficient