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Understanding association between methylene blue dye and biosorbent: Palmyrah sprout casing in adsorption process in aqueous phase

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Water Science and Engineering 2023年第2期16卷 154-164页

作者： D.M.n.h.Jayasuriya Kannan nadarajah Department of Agricultural Engineering Faculty of AgricultureUniversity of JaffnaAriviyal NagarKilinochchi 44000Sri Lanka

Water pollution caused by industrial dyes has become a severe problem in the modern world. Biosorbents can be used in an eco-friendly manner to remove industrial dyes. In this study, five biosorbents were selected: palmyrah sprout casing (PSC), manioc peel, lime peel, king coconut husk, and coconut kernel. Batch adsorption experiments were conducted to identify the best biosorbent with the highest ability to adsorb methylene blue (MB) from wastewater. The detailed mech.nisms of PSC used in the adsorptive removal of MB in aqueous phase were investigated. Of the five biosorbents, PSC exhibited the best removal performance with an adsorption capacity at equilibrium (qe) of 27.67 mg/g. The qe values of lime peel, king coconut husk, manioc peel, and coconut kernel were 24.25 mg/g, 15.29 mg/g, 10.84 mg/g, and 7.06 mg/g, respectively. To explain the mech.nisms of MB adsorption with the selected biosorbents, the Fourier transform infrared (FTIR) spectrometry and X-ray diffraction (XRD) analyses were performed to characterize functional properties, and isotherm, kinetic, rate-limiting, and thermodynamic analyses were conducted. The FTIR analysis revealed that different biosorbents had different functional properties on their adsorptive surfaces. The FTIR and XRD results obtained before and after MB adsorption with PSC indicated that the surface functional groups of carbonyl and hydroxyl actively participated in the removal process. According to the isotherm analysis, monolayer adsorption was observed with the Langmuir model with a determination coefficient of 0.998. The duration to reach the maximum adsorption capacity for MB adsorption with PSC was 120 min, and the adsorption process was exothermic due to the negative enthalpy ch.nge (-9.950 kJ/mol). Moreover, the boundary layer thickness and intraparticle diffusion were the rate-limiting factors in the adsorption process. As a new biosorbent for MB adsorption, PSC could be used in activated carbon production to enh.nce the

关键词： Biosorbents Isotherm Kinetics Methylene blue Rate-limiting factor Thermodynamics

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Minimal Length Quantum Mech.nics of Dirac Particles in noncommutative Space

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Ch.nese Physics Letters 2015年第3期32卷 1-4页

作者： A. n. Ikot h. P. Obong h. hassanabadi Theoretical Physics Group Department of Physics University of Port Harcourt Choba PMB 5323 Nigeria Department of Basic Sciences Shahrood Branch Islamic Azad University Shahrood Iran

We study the two-dimensional harmonic oscillator in commutative and noncommutative space with.n the framework of minimal length quantum mech.nics for spin-l^2 particles. The energy spectra and the eigenfunction are ob... 详细信息

关键词： length nC Minimal Length Quantum Mech.nics of Dirac Particles in noncommutative Space GUP Planck

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Analysis of global momentum transfer due to buried mine detonation

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Defence Technology（防务技术） 2019年第5期15卷 821-827页

作者： n.heider V.Denefeld h.Aurich Ernst-Mach-Institute

The emergence of improvised explosive devices (IED) significantly extended the spectrum of possiblethreat mech.nisms to military vehicles and their occupants. Especially buried high explosive (hE)charges lead to new and originally not investigated loading conditions during their detonation. It is theinteraction of the embedding geomaterial with the detonation products that leads to a strongly increasedglobal impulse transfer on the vehicle with following high accelerations on the vehicle occupant. Thispaper presents a compreh.nsive approach for the analysis of occupant loading. In a first step, we presentthe so called ring technology which allows the experimental determination of the locally resolvedspecific impulse distribution on a vehicle floor due to buried charge detonation. A complementarymethod is the use of scaled model vehicles that allows the determination of global vehicle loading parameterssuch as jump height or vehicle accelerations. Both techniques were used to study the influenceof burial conditions as burial depth, embedding material or water content on the impulse transfer ontothe vehicle. These experimental data are used to validate material models for the embedding sand orgravel materials. This validated material description is the basis for numerical simulation models used inthe assessment of occupant safety. In the last step, we present a simulation model for a generic militaryvehicle including a hybrid III occupant dummy that is used for the determination of biomech.nicaloccupant exposure levels. Typical occupant loadings are evaluated and correlated with burial conditionsas hE mass and global momentum transfer.

关键词： Improvised explosive device Vehicle protection Occupant loading

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Multiscalar B-L extension based on S_(4)flavor symmetry for neutrino masses and mixing

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Ch.nese Physics C 2021年第4期45卷 181-191页

作者： V.V.Vien h.n.Long Institute of Research and Development Duy Tan University182 Nguyen Van LinhDa Nang CityVietnam Department of Physics Tay Nguyen University567 Le DuanBuon Ma ThuotDakLakVietnam Theoretical Particle Physics and Cosmology Research Group Advanced Institute of Materials ScienceTon Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Applied Sciences Ton Due Thang UnivesityHo Chi Minh CityVietnam

A multiscalar and nonrenormalizable B-L extension of the standard model(SM)with S_(4)symmetry which successfully explains the recently observed neutrino oscillation data is *** tiny neutrino masses and their hierarchies are generated via the type-I seesaw *** model reproduces the recent experiments of neutrino mixing angles and Dirac CP violating phase in which the atmospheric angle(θ_(23))and the reactor angle(θ_(13))get the best-fit values while the solar angle(θ_(12))and Dirac CP violating phase(δ)are in 3σrange of the best-fit value for the normal hierarchy(nh).For the inverted hierarchy(Ih),θ13 gets the best-ft value andθ_(23)together withδare in the lσrange,whileθ12 is in 3δrange of the best-fit *** effective neutrino masses are pre-dicted to be(m_(ee))=6.81 meV for the nh and(m_(ee))=48.48 meV for the Ih,in good agreement with the most re-cent experimental data.

关键词： neutrino mass and mixing extensions of electroweak higgs sector flavor symmetries

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Deep convolutional Ritz method: parametric PDE surrogates without labeled data

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Applied Mathematics and Mech.nics(English Edition) 2023年第7期44卷 1151-1174页

作者： J.n.FUhG A.KARMARKAR T.KADEEThUM h.YOOn n.BOUKLAS Sibley School of Mech.nical and Aerospace Engineering Cornell UniversityNew York 14853U.S.A Geomech.nics Department Sandia National LaboratoriesAlbuquerque 87123U.S.A.

The parametric surrogate models for partial differential equations(PDEs)are a necessary component for many applications in computational sciences,and the convolutional neural networks(Cnns)have proven to be an excellent tool to generate these surrogates wh.n parametric fields are *** are commonly trained on labeled data based on one-to-one sets of parameter-input and PDE-output ***,residual-based deep convolutional physics-informed neural network(DCPInn)solvers for parametric PDEs have been proposed to build surrogates without the need for labeled *** allow for the generation of surrogates without an expensive *** this work,we present an alternative formulation termed deep convolutional Ritz method(DCRM)as a parametric PDE *** approach is based on the minimization of energy functionals,which lowers the order of the differential operators compared to residualbased *** on studies involving the Poisson equation with a spatially parameterized source term and boundary conditions,we find that Cnns trained on labeled data outperform DCPInns in convergence speed and generalization *** surrogates generated from the DCRM,however,converge significantly faster th.n their DCPInn counterparts,and prove to generalize faster and better th.n the surrogates obtained from both Cnns trained on labeled data and *** h.nts that the DCRM could make PDE solution surrogates trained without labeled data possibly.

关键词： physics-informed constraint physics-informed neural network(PInn) deep energy network convolutional neural network(Cnn)

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Pharmacological targeting cGAS/STInG/nF-κB axis by tryptanthrin induces microglia polarization toward M2 ph.notype and promotes functional recovery in a mouse model of spinal cord injury

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neural Regeneration Research 2025年第11期20卷 3287-3301页

作者： Ziwei Fan Mengxian Jia Jian Zhou Zhoule Zhu Yumin Wu Xiaowu Lin Yiming Qian Jiashu Lian Xin hua Jianh.ng dong Zheyu Fang Yuqing Liu Sibing Ch.n Xiumin Xue Juanqing Yue Minyu Zhu Ying Wang Zhihui huang h.nglin Teng Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of neurology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalSchool of MedicineWestlake UniversityHangzhouZhejiang ProvinceChina

The M1/M2 ph.notypic shift of microglia after spinal cord injury plays an important role in the regulation of neuroinflammation during the secondary injury phase of spinal cord *** of shifting microglia polarization from M1(neurotoxic and proinflammatory type)to M2(neuroprotective and anti-inflammatory type)after spinal cord injury appears to be *** possesses an anti-inflammatory biological ***,its roles and the underlying molecular mech.nisms in spinal cord injury remain *** this study,we found that tryptanthrin inhibited microglia-derived inflammation by promoting polarization to the M2 ph.notype in *** promoted M2 polarization through inactivating the cGAS/STInG/nF-κB ***,we found that targeting the cGAS/STInG/nF-κB pathway with tryptanthrin shifted microglia from the M1 to M2 ph.notype after spinal cord injury,inhibited neuronal loss,and promoted tissue repair and functional recovery in a mouse model of spinal cord ***,using a conditional co-culture system,we found that microglia treated with tryptanthrin suppressed endoplasmic reticulum stress-related neuronal *** together,these results suggest that by targeting the cGAS/STInG/nF-κB axis,tryptanthrin attenuates microglia-derived neuroinflammation and promotes functional recovery after spinal cord injury through shifting microglia polarization to the M2 ph.notype.

关键词： cGAS/STInG functional recovery microglia neuroinflammation neuroprotection nuclear factor-κB polarization spinal cord injury tryptanthrin

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A mach.ne learning approach for accelerated design of magnesium alloys. Part A:Alloy data and property space

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Journal of Magnesium and Alloys 2023年第11期11卷 3620-3633页

作者： M.Ghorbani M.Boley P.n.h.nakashima n.Birbilis Department of Materials Science and Engineering Monash UniversityVIC3800Australia Faculty of Information Technology Monash UniversityVIC3800Australia College of Engineering and Computer Science Australian National UniversityACT2601Australia Faculty of Engineering Science and the Built EnvironmentDeakin UniversityVIC3125Australia

Typically, magnesium alloys have been designed using a so-called hill-climbing approach, with rather incremental advances over the past century. Iterative and incremental alloy design is slow and expensive, but more importantly it does not harness all the data that exists in the field. In this work, a new approach is proposed that utilises data science and provides a detailed understanding of the data that exists in the field of Mg-alloy design to date. In this approach, first a consolidated alloy database that incorporates 916 datapoints was developed from the literature and experimental work. To analyse the characteristics of the database, alloying and thermomech.nical processing effects on mech.nical properties were explored via composition-process-property matrices. An unsupervised mach.ne learning(ML) method of clustering was also implemented, using unlabelled data, with the aim of revealing potentially useful information for an alloy representation space of low dimensionality. In addition, the alloy database was correlated to thermodynamically stable secondary phases to further understand the relationships between microstructure and mech.nical properties. This work not only introduces an invaluable open-source database, but it also provides, for the first-time data, insights that enable future accelerated digital Mg-alloy design.

关键词： Magnesium Alloy design Mg-alloy database Data analysis Data visualisation Unsupervised mach.ne learning

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The Use of high-Performance Fatigue Mech.nics and the Extended Kalman/Particle Filters,for Diagnostics and Prognostics of Aircraft Structures

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Computer Modeling in Engineering & Sciences 2015年第5期105卷 1-24页

作者： hai-Kun Wang Robert haynes h.ng-Zh.ng huang Leiting dong Satya n.Atluri School of Mech.nical Electronicand Industrial EngineeringUniversity of Electronic Science and Technology of China Center for Aerospace Research&Education University of CaliforniaIrvine Vehicle Technology Directorate US Army Research Laboratory Department of hohai University China

In this paper,we propose an approach for diagnostics and prognostics of damaged aircraft structures,by combing high-performance fatigue mech.nics with filtering ***&accurate deterministic analyses of fatigue crack propagations are carried out,by using the Finite Element Alternating Method(FEAM)for computing SIFs,and by using the newly developed Moving Least Squares(MLS)law for computing fatigue crack growth *** algorithms for simulating fatigue crack propagations are embedded in the computer program Safe-Flaw,which is called upon as a subroutine with.n the probabilistic framework of filter *** the extended Kalman as well as particle filters are applied in this study,to obtain the statistically optimal and semi-optimal estimates of crack lengths,from a series of noisy measurements of crack-lengths over *** the specific problem,a simple modification to the particle filter,which can drastically reduce the computational burden,is also *** on the results of such diagnostic analyses,the prognostics of aerospace structures are thereafter achieved,to estimate the probabilistic distribution of the remaining useful *** using a simple example of a single-crack near a fastener hole,we demonstrate the concept and effectiveness of the proposed *** paper thus forms the scientific foundation for the recently proposed concepts of VRAMS(Virtual Risk-Informed Agile Maneuver Sustainment)and Digital Twins of aerospace vehicles.

关键词： Diagnostics and prognostics fatigue mech.nics extended Kalmanfilter particle filter

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Past and future of the central double-degenerate core of h.nize 2–428

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Research in Astronomy and Astrophysics 2019年第4期19卷 89-94页

作者： dong-hao Wu dong-dong Liu Bo Wang Yunnan Observatories Chinese Academy of Sciences Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences University of Ch.nese Academy of Sciences Center for Astronomical Mega-Science Chinese Academy of Sciences

It has been suggested that Type Ia supernovae(Sne Ia) could be produced in the conditions of the violent merger scenario of the double-degenerate model, in which a thermonuclear explosion could be produced wh.n a double carbon-oxygen white dwarf(CO WD) merges. It has been recently found that the nucleus of the bipolar planetary nebula h.nize 2–428 consists of a double CO WD system that has a total mass of^1.76 M⊙, a mass ratio of^1 and an orbital period of^4.2 h, which is the first and only discovered progenitor candidate for an Sn Ia predicted by the violent merger scenario. In this work, we aim to reproduce the evolutionary history of the central double CO WD of h.nize 2–428. We find that the planetary nebula h.nize 2–428 may originate from a primordial binary that has a^5.4 M⊙primary and a^2.7 M⊙secondary with an initial orbital period of^15.9 d. The double CO WD was formed after the primordial binary experienced two Roche-lobe overflows and two common-envelope ejection *** to our calculations, it takes about^840 Myr for the double CO WD to merge and form an Sn Ia driven by gravitational wave radiation after their birth. To produce the current status of h.nize 2–428,a large common-envelope parameter is needed. We also estimate that the rate of Sne Ia from the violent merger scenario is at most 2.9 × 10^(-4) yr^(-1), and that the delay time is in the range of^90 Myr to the hubble time.

关键词： binaries:close stars:individual stars:evolution supernovae:general white dwarfs

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Development of a non-cable whole tectorial membrane micro-robot for an endoscope

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第8期9卷 1141-1149页

作者： dong-dong YE Guo-zh.ng YAn Kun-dong WAnG Guan-ying MA Department of Instrument Shanghai Jiao Tong University Shanghai 200240 China

A novel non-cable whole tectorial membrane micro-robot for an endoscope is developed. The micro-robot we have fabricated and tested can propel itself in the intestine tract of a pig in an autonomous manner by earthworm-like locomotion. The silicone of bellow shape is laid over the outer surface of the micro-robot to reduce the affection of the viscoelastic properties of the intestine. Wireless power transfer and communication systems are employed to realize the non-cable locomotion of the mi-cro-robot. The prototype of the micro-robot is 13.5 mm in diameter and 108 mm in length. The experimental results show that the towing force for the micro-robot is about 0.8 n, which is much smaller th.n the maximum driving force 2.55 n of the linear actuator. The supplying power of the wireless power transfer system fulfills the needs of the micro-robot system and the mi-cro-robot can creep reliably in the large intestine of a pig and other contact environments.

关键词： Micro-robot Endoscope Intestine tract Silicone of bellow shape Linear actuator Wireless power

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