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CO_(2)capture costs of ch.mical looping combustion of biomass:A comparison of natural and synth.tic oxygen carrier

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Journal of Energy Ch.mistry 2024年第5期92卷 296-310页

作者： Benjamin Fleiß Juraj Priscak martin h.mmersch.id Josef Fuch. Stefan müller h.rmann h.fbauer Institute of Ch.mical Environmental and Bioscience EngineeringTU WienVienna1060 ViennaAustria BEST–Bioenergy and Sustainable Tech.ologies Gmbh Graz8010 StyriaAustria

Ch.mical looping combustion h.s th. potential to be an efficient and low-cost tech.ology capable of contributing to th. reduction of th. atmosph.ric concentration of CO_(2) in order to reach.th. 1.5/2°C goal and mitigate climate *** th.s process,a metal oxide is used as oxygen carrier in a dual fluidized bed to generate clean CO_(2) via combustion of *** commonly,natural ores or synth.tic materials are used as oxygen carrier wh.reas both.must meet special requirements for th. conversion of solid *** oxygen carriers are ch.racterized by h.gh.r reactivity at th. expense of h.gh.r costs versus th. lower-cost natural *** determine th. viability of both.possibilities,a tech.o-economic comparison of a synth.tic material based on manganese,iron,and copper to th. natural ore ilmenite was *** synth.tic oxygen carrier was ch.racterized and tested in a pilot plant,wh.re h.gh.combustion efficiencies up to 98.4%and carbon capture rates up to 98.5%were *** tech.o-economic assessment resulted in CO_(2) capture costs of 75 and 40€/tCO_(2) for th. synth.tic and natural ore route respectively,wh.reas a sensitivity analysis sh.wed th. h.gh.impact of production costs and attrition rates of th. synth.tic *** synth.tic oxygen carrier could break even with.th. natural ore in case of lower production costs and attrition rates,wh.ch.could be reach.d by adapting th. production process and recycling *** comparison to state-of-th.-art tech.ologies,it is demonstrated th.t both.routes are viable and th. capture cost of CO_(2) could be reduced by implementing th. ch.mical looping combustion tech.ology.

关键词： Ch.mical looping combustion BECCS Tech.o-economic assessment CO_(2)capture costs Oxygen carrier development Synth.tic materials Ilmenite

multiple scales meth.d for analyzing a forced damped rotational pendulum oscillatorwith.allows

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Communications in Th.oretical Ph.sics 2024年第5期76卷 58-67页

作者： h.ifa A Alyousef Alvaro h.Salas B m Alotaibi S A El-Tantawy Department of Ph.sics College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of math.matics and Statistics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Ph.sics Faculty of SciencePort Said UniversityPort Said 42521Egypt Research.Center for Ph.sics(RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

Th.s study reports th. analytical solution for a generalized rotational pendulum system with.gallows and periodic excited *** multiple scales meth.d(mSm)is applied to solve th. proposed *** types of rotational pendulum oscillators are studied and talked about in *** include th. forced damped rotating pendulum oscillator with.gallows,th. damped standard simple pendulum oscillator,and th. damped rotating pendulum oscillator with.ut *** mSm first-order approximations for all th. cases mentioned are derived in *** obtained results are illustrated with.concrete numerical *** first-order mSm approximations are compared to th. fourth.order Runge-Kutta(RK4)numerical ***,th. maximum error is estimated for th. first-order approximations obtained th.ough.th. mSm,compared to th. numerical approximations obtained by th. RK4 ***,we conducted a comparative analysis of th. outcomes obtained by th. used meth.d(mSm)and h.-mSm to ascertain th.ir respective levels of *** proposed meth.d can be applied to analyze many strong nonlinear oscillatory equations.

关键词： rotational pendulum system multiple scales meth.d approximate solution damped oscillations forced pendulum with.gallows h.-multiple scales meth.d

Cancer cell cycle h.terogeneity as a critical determinant of th.rapeutic resistance

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Genes & Diseases 2024年第1期11卷 189-204页

作者： Ebrah.m h.maleki Ah.ad Reza Bah.ami maryam m.matin Department of Biology Faculty of ScienceFerdowsi University of Mashhad*** MashhadIran Jagiellonian Centre for Experimental Th.rapeutics(JCET) Jagiellonian University31-007 KrakowPoland Doctoral Sch.ol of Exact and Natural Sciences Jagiellonian University30-348 KrakowPoland Industrial Biotech.ology Research.Group Institute of BiotechnologyFerdowsi University of Mashhad*** MashhadIran Novel Diagnostics and Th.rapeutics Research.Group Institute of BiotechnologyFerdowsi University of Mashhad***MashhadIran Stem Cell and Regenerative medicine Research.Group Iranian Academic Center for EducationCulture and Research(ACECR)Khorasan Razavi Branch917751376 MashhadIran

Intra-tumor h.terogeneity is now arguably one of th. most-studied topics in tumor biology,as it represents a major obstacle to effective cancer *** tumor cells are h.gh.y diverse at genetic,epigenetic,and ph.notypic levels,intra-tumor h.terogeneity can be assumed as an important contributing factor to th. nullification of ch.moth.rapeutic effects,and recurrence of th. *** on th. role of h.terogeneous subpopulations of cancer cells with.varying cell-cycle dynamics and beh.vior during cancer progression and treatment;h.rein,we aim to establish.a compreh.nsive definition for adaptation of neoplastic cells against *** discuss two parallel and yet distinct subpopulations of tumor cells th.t play pivotal roles in reducing th. effects of ch.moth.rapy:"resistant"and"tolerant"***,th.s review also h.gh.igh.s th. impact of th. quiescent ph.se of th. cell cycle as a survival mech.nism for cancer *** understanding th. mech.nisms under-lying th. quiescence,it provides an insigh.ful perspective on cancer stem cells(CsCs)and th.ir dual and intertwined functions based on th.ir cell cycle state in response to ***-over,CSCs,epith.lial-mesench.mal transformed cells,circulating tumor cells(CTCs),and disseminated tumor cells(DTCs),wh.ch.are mostly in a quiescent state of th. cell cycle are proved to h.ve multiple biological links and can be implicated in our viewpoint of cell cycle h.terogeneity in ***,increasing our knowledge of cell cycle h.terogeneity is a key to identifying new th.rapeutic solutions,and th.s emerging concept may provide us with.new opportunities to prevent th. dreadful cancer recurrence.

关键词： Cancer stem cells(CSCs) Carcinoma Cell cycle h.terogeneity Quiescence Th.rapy resistance Th.rapy tolerance Tumor dormancy

Tilted global solar irradiance in Bah.ain:an experimental study

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Clean Energy 2024年第2期8卷 27-34页

作者： N.Vasilikos C.Georgantopoulou h.Alajaimi S.h.Almajed m.Ah.ed D.math.oulakis Sch.ol of mech.nical Engineering Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain Sch.ol of mech.nical Engineering National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In th. present work,tilted global solar irradiance data are presented and analysed,measured for a period of 1 year on th. campus of Bah.ain Polytech.ic,Kingdom of Bah.ain,from both.a fixed ph.tovoltaic panel and a moving one via a two-axis solar *** fixed panel faces south.with.an angle of 26°with.respect to th. h.rizontal,coinciding with.th. local geograph.cal *** second panel is moved by two motors,controlled by a global positioning system and suitable software so th.t th. Sun’s rays are perpendicular to th. panel surface.A pyranometer is installed on each.panel,recording th. tilted global solar irradiance,stored by using a data *** analysis of th. data obtained sh.ws a 33%solar energy gain on an annual basis for th. moving panel(2780 versus 2088 kWh.m^(2) on th. fixed panel).more importantly,in June,wh.n th. energy demand in Bah.ain is elevated due to th. increased residential cooling loads,th. solar energy received by th. moving panel is 54.7%h.gh.r compared with.th.t of th. fixed *** a percentage basis,th. increase in solar energy from th. moving panel is profound in th. early morning and late evening ***,th. reduction in th. solar energy received by th. fixed panel from may to June does not appear in th. moving panel because of th. adjustable orientation of th. *** th. year,th. mean daily solar power varies between 0.37 and 0.56 kW/m^(2) for th. fixed panel,and 0.45 and 0.70 kW/m^(2) for th. moving *** winter,solar energy fluctuations are elevated due to erratic weath.r conditions th.t present a peak standard deviation of 28%of th. corresponding *** data presented are useful for potential solar investments in Gulf countries.

关键词： tilted solar irradiance renewable energy solar tracking ph.tovoltaic Gulf Cooperation Council Countries

Fast efficient ph.ton deceleration in plasmas by using two laser pulses at different frequencies

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matter and Radiation at Extremes 2024年第3期9卷 11-18页

作者： Y.X.Wang X.L.Zh. S.m.Weng P.Li X.F.Li h.Ai h.R.Pan Z.m.Sh.ng Key Laboratory for Laser Plasmas(moe) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Research.Center of Laser Fusion of Ch.na Academy of Engineering Ph.sics MianyangSichuan 621900China State key Laboratory of h.gh.Field Laser Ph.sics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

Th. generation of ultrash.rt h.gh.power ligh. sources in th. mid-infrared(mid-IR)to terah.rtz(Th.)range is of interest for applications in a number of fields,from fundamental research.to biology and *** conventional laser tech.ology,ph.ton deceleration in plasma wakes provides an alternative approach.to th. generation of ultrash.rt mid-IR or Th. ***,we present a ph.ton deceleration sch.me for th. efficient generation of ultrash.rt mid-IR or Th. pulses by using an intense driver laser pulse with.a relatively sh.rt wavelength.and a signal laser pulse with.a relatively long *** signal pulse trails th. driver pulse with.an appropriate time delay such.th.t it sits at th. front of th. second wake bubble th.t is driven by th. driver *** to its relatively long wavelength.th. signal pulse will be subjected to a large gradient of th. refractive index in th. plasma wake ***,th. ph.ton deceleration in th. plasma wake becomes faster and more efficient for signal pulses with.longer *** greatly enh.nces th. capacity and efficiency of ph.ton deceleration in th. generation of ultrash.rt h.gh.power ligh. sources in th. long-wavelength.IR and Th. spectral ranges.

关键词： laser ultrash.rt ph.ton

Convexification of h.brid AC-DC Optimal Power Flow with.Line-Commutated Converters

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 617-628页

作者： h.ngyuan Liang Zh.gang Li J.h.Zh.ng Q.h.Wu Sch.ol of Electric Power Engineering South China University of TechnologyGuangzhou 510641China

Line-commutated converter (LCC)-based h.gh.voltage DC (h.DC) systems h.ve been integrated with.bulk AC power grids for interregional transmission of renewable power. Th. nonlinear LCC model brings additional nonconvexity to optimal power flow (OPF) of h.brid AC-DC power grids. A convexification meth.d for th. LCC station model could address such.nonconvexity but h.s rarely been discussed. We devise an equivalent reformulation for classical LCC station models th.t facilitates second-order cone convex relaxation for th. OPF of LCC-based AC-DC power grids. We also propose sufficient conditions for exactness of convex relaxation with.its proof. Equivalence of th. proposed LCC station models and properties, exactness, and effectiveness of convex relaxation are verified using four numerical simulations. Simulation results demonstrate a globally optimal solution of th. original OPF can be efficiently obtained from relaxed model.

关键词： AC-DC power system convex relaxation linecommutated converter optimal power flow second-order cone programming

Sh.ll-model representations of th. microscopic version of th. Boh.-mottelson collective model

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Communications in Th.oretical Ph.sics 2024年第8期76卷 79-90页

作者： h.G Ganev Joint Institute for Nuclear Research DubnaRussia Institute of mech.nics Bulgarian Academy of SciencesSofiaBulgaria

Th. structure of th. irreducible collective spaces of th. group Sp(12,R),wh.ch.many-particle nuclear states are classified according to th. ch.in Sp(12,R)⊃U(6)⊃SO(6)⊃SU_(pn)(3)⊗SO(2)⊃SO(3)of th. proton-neutron symplectic model(PNSm),is considered in *** ch.in of th. PNSm was recently sh.wn to correspond to a microscopic sh.ll-model version of th. Boh.-mottelson collective *** construction of th. relevant sh.ll-model representations of th. Sp(12,R)group along th.s ch.in is considered for th.ee nuclei with.varying collective properties and from different mass *** is sh.wn th.t th. SU_(pn)(3)basis states of th. Sp(12,R)representations belonging to th. SO(6)irreps with.seniorityυ≥υ0,with.0 denoting th. maximal seniority SO(6)irrep contained in th. Sp(12,R)bandh.ad,are always Pauli allowed,but organized in a different way into different SO(6)*** is in contrast to th. case of filling th. levels of th. standard th.ee-dimensional h.rmonic oscillator and using th. pleth.sm *** th. SU_(pn)(3)multiplets with.nυh. present work are important for th. practical application of th. microscopic version of th. Boh.-mottelson collective model.

关键词： microscopic sh.ll-model version of th. Boh.-mottelson model proton-neutron symplectic model Sp(12,R)dynamical algebra sh.ll-model representations

Impact of carbimazole combined with.vitamin E on testicular injury induced by experimental h.perth.roidism in adult albino rats:oxidative/inflammatory/apoptotic path.ays

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Asian Journal of Andrology 2024年第4期26卷 396-401页

作者： Ramadan S h.ssein moustafa m Eyada Rash.d m mostafa Samah.m Elaidy Sh.reen h.Elsayed h.ny m Saad Department of Dermatology College of Medicine Prince Sattam Bin Abdulaziz UniversityAl-Kharj 16242Saudi Arabia Department of Dermatology Andrology and STDsAssiut Police HospitalAssiut 71525Egypt Department of Dermatology Venereology and AndrologyFaculty of MedicineSuez Canal UniversityIsmailia 41522Egypt Department of Andrology and Sexology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Department of Clinical Ph.rmacology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Department of Reh.bilitation Sciences Faculty of Health and Rehabilitation SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh 12271Saudi Arabia.

Th.roid h.rmones play essential roles in spermatogenesis,but th.ir effects on infertile males remain poorly *** study aimed to evaluate th. impact of combining carbimazole(CBZ)with.vitamin E(VE)on testicular injury induced by experimental h.perth.roidism in adult albino rats,focusing on oxidative,inflammatory,and apoptotic *** th.s experimental study,64 adult male albino Wistar rats were divided into eigh. groups:Group I(control-untreated),Group II(CBZ-control),Group III(VE-control),Group IV(CBZ+VE-control),Group V(levoth.roxine-induced testicular injury),Group VI(levoth.roxine+CBZ-treated),Group VII(levoth.roxine+VE-treated),and Group VIII(levoth.roxine+CBZ+VE-treated).Th. study was conducted in th. Faculty of medicine,Suez Canal University(Ismailia,Egypt).After cervical decapitation,both.testes and epididymis were examined h.stopath.logically and *** differences were observed among groups concerning malondialdeh.de(mDA),glutath.one(GSh.,superoxide dismutase(SOD),and catalase(CAT;all Pmerase ch.in reaction analysis sh.wed significant differences in tumor necrosis factor-α(TNF-α),interleukin-10(IL-10),Bcl-2-associated X protein(BAX),B-cell lymph.ma 2 protein(Bcl2),p53,Caspase-3,Caspase-8,Caspase-9,and nuclear factor-kappa B(NF-κB)mRNA levels(all Ph.perth.roid group treated with.CBZ alone(Group VI)exh.bited testicular side effects,affecting seminiferous tubules and ***,th. Group VIII sh.wed improved spermatogenesis and a decrease in testicular side *** addition of VE to th. treatment of h.perth.roid rats with.CBZ reduced testicular side effects and seminiferous tubular affection wh.n potentially improving *** research.is needed to elucidate th. underlying mech.nisms fully.

关键词： antith.roid drugs testicular injury th.roid gland vitamin E

marinoan glaciation in th. Indian subcontinent——Anatomy and global implications

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Journal of Palaeogeograph. 2024年第2期13卷 293-308页

作者： h.N.Bh.ttach.rya Department of Earth.Sciences Techno India UniversityWest BengalSector VSalt LakeKolkata700091India

Detailed sedimentological analysis of th. Pokaran Boulder Bed,representing th. most basal unit of th. Neoproterozoic-Lower Cambrian marwar Supergroup,clearly indicates its glacial *** glacial sediments are interpreted as an ice-contact submarine fan *** on th. detrital and inh.rited zircon population of th. marwar Supergroup sediments and interlayered pyroclastic deposits,a marinoan cryoch.on of th. Cryogenian Period is envisaged for th. Pokaran Boulder *** well-preserved Ediacaran elements in th. post-glacial sedimentary succession also support a Cryogenian to Early Cambrian age of th. marwar *** glacial deposition at th. base of th. marwar Supergroup strength.ns th. regional correlation between th. studied sediments with.th. Lesser h.malayan Blaini-Krol-Tal sediments and th. h.qf Supergroup of *** available zircon ages and paleomagnetic data of th. malani Igneous suite,along with.th. marinoan glacial deposits,detrital zircon ages,and Ediacaran fossil elements of th. marwar Supergroup add significant information to th. Neoproterozoic Earth.h.story.

关键词： Neoproterozoic marinoan glaciation Diamictites Pokaran Boulder Bed marwar Supergroup