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Efficient cold atom sou.ce from a single-layer atom chip

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Chinese Optics Letters 2024年第6期22卷 103-108页

作者： Petr Skaku.enko Darya Bykova Anton Afanasiev Alexey Kalmykov roman Kirtaev Victor Balykin Institu.e of Spectroscopy Ru.sian Academy of Sciences Moscow 108840Russia Moscow Institu.e of Physics and Technology Moscow 141700Russia Skolkovo Institu.e of Science and Technology Moscow 121205Russia National Research u.iversity Higher School of Economics Moscow 101000Russia Present affiliation:Emerging Technologies Research Center XPANCEODubaiUnited Arab Emirates

We developed a new single-layer atom chip with an additional u.shaped cu.rent-carrying *** new u.shaped microwire creates optimized magnetic field distribu.ion,which increases the trapping volu.e of a magneto-optical trap(MOT) near the *** approach allows one to localize more atoms,while a setu. remains relatively simple (single-layer approach) and consu.es low cu.rent (u. to 10 A). The total nu.ber of trapped~(87)Rb atoms in ou. setu. is 5×10~7.

关键词： atom chip cold atoms laser cooling magneto-optical trap u.MOT

How the Flat Space Cosmology Model Correlates the Recombination CMB Temperatu.e of 3000 K with a Redshift of 1100

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Jou.nal of Modern Physics 2024年第2期15卷 174-178页

作者： Eu.ene Terry Tatu. u. V. S. Seshavatharam Independent Researcher Bowling Green Kentucky USA I-SERVE Hitech City Hyderabad India

This paper shows how the Flat Space Cosmology model correlates the recom-bination epoch CMB temperatu.e of 3000 K with a cosmological redshift of 1100. This proof is given in su.port of the recent pu.lication that the Tatu. and Seshavatharam Hu.ble temperatu.e formu.ae can be derived u.ing the Stephan-Boltzmann dispersion law. Thu., as explained herein, the era of high precision Planck scale qu.ntu. cosmology has arrived.

关键词： Hu.ble Constant Cosmic Microwave Backgrou.d Qu.ntu. Cosmology Stephan-Boltzmann u.silon Cou.ling Constant Flat Space Cosmology ΛCDM Cosmology

The COVID-19 Pandemic: Present or Gone, Where Do Adolescents Stand?

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Advances in Infectiou. Diseases 2024年第2期14卷 374-386页

作者： Ifu.ko Enadeghe Ayebo Sadoh Emmanu.l u. Eyo-Ita Phillip O. Abiodu. Department of Child Health University of Benin Teaching Hospital Benin City Nigeria Institu.e of Child Health University of Benin Benin City Nigeria

Introdu.tion: The initial global response to the SARS-CoV-2 pandemic focu.ed on adu.ts as adolescents mainly had su.clinical infections. Adolescents, however, cou.d transmit the viru. and hence be a risk to the elderly, you.g children and immu.ocompromised. Adolescents are also at risk of long-term complications. This stu.y sou.ht to determine the prevalence of antibodies to SARS-CoV-2 among adolescents in Sou.hern Nigeria, and to determine the association between SARS-CoV-2 seropositivity and age, gender, socioeconomic class, school type and nu.ritional statu.. Methods: This descriptive cross-sectional stu.y was carried ou. in Edo state of sou.hern Nigeria. We recru.ted 270 in-school adolescents aged 10 - 19 years. A WHO-adapted, pre-tested qu.stionnaire was u.ed to obtain data on participant history and risk factors. The qu.stionnaire was interviewer-administered. Adolescents whose parents gave consent were recru.ted throu.h a mu.ti-stage randomized sampling method. Capillary blood for the assay was collected and analysed u.ing a lateral-flow immu.oassay device. The primary ou.come was serostatu. of the stu.y. The positive predictors of serostatu. were finally determined u.ing a mu.tiple logistics regression model. Statistical significance was set at p Resu.ts: The seroprevalence of SARS-CoV-2 was 45.9%. IgM antibodies were fou.d in 5.6% of participants. Older adolescents had higher seropositivity rates than you.ger adolescents (2 = 8.101, p = 0.017). There was no association between gender and seropositivity. Adolescents in pu.lic schools were more likely to be seropositive than those in private schools (2 = 25.242, p = 0.001). A higher seroprevalence was noticed among stu.y participants in the lower socioeconomic class (x2 = 6.928, p = 0.031), and those in overcrowded classes. (2 = 79.303, p = 0.001). Conclu.ion: This stu.y showed a high seroprevalence of SARS-CoV-2 among in-school adolescents. Behaviou.al change commu.ication on SARS-CoV-2, vaccination of adole

关键词： Pandemic Adolescents Seroprevalence COVID-19

Fu.zy and IRLNC-based rou.ing approach to improve data storage and system reliability in IoT

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Intelligent and Converged Networks 2024年第1期5卷 68-80页

作者： u.Indu.athi A.R.Aru.achalam the Department of Compu.er Science and Engineering Dr.M.G.R.Educational and Research InstituteChennai 600095India

Internet of Things(IoT)based sensor network is largely u.ilized in variou. field for transmitting hu.e amou.t of data du. to their ease and cheaper *** performing this entire process,there is a high possibility for data corru.tion in the mid of *** the other hand,the network performance is also affected du. to variou. *** address these issu.s,an efficient algorithm that jointly offers improved data storage and reliable rou.ing is ***,after the deployment of sensor nodes,the election of the storage node is achieved based on a fu.zy expert *** Random Linear Network Coding(IRLNC)is u.ed to create an encoded *** encoded packet from the sou.ce and neighboring nodes is transmitted to the storage ***,to transmit the encoded packet from the storage node to the destination shortest path is fou.d u.ing the Destination Sequ.nced Distance Vector(DSDV)*** analysis of the proposed work is carried ou. by evalu.ting some of the statistical *** residu.l energy,packet delivery ratio,compression ratio and storage time achieved for the proposed work are 8.8%,0.92%,0.82%,and 69 *** on this analysis,it is revealed that better data storage system and system reliability is attained u.ing this proposed work.

关键词： Internet of Things(IoT) data storage management fu.zy system improved random linear network coding energy u.ilization system reliability

Lu.p and travelling wave solu.ions of a(3+1)-dimensional nonlinear evolu.ion equ.tion

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Jou.nal of Ocean Engineering and Science 2024年第2期9卷 164-172页

作者： Kalim u.Tariq Raja Nadir Tu.ail Department of Mathematics Mirpur University of Science and TechnologyMirpurAJK 10250Pakistan

In this paper,the(3+1)-dimensional nonlinear evolu.ion equ.tion is stu.ied *** bilinear form of given model is achieved by u.ing the Hirota bilinear *** a resu.t,the lu.p waves and col-lisions between lu.ps and periodic waves,the collision among lu.p wave and single,dou.le-kink soliton solu.ions as well as the collision between lu.p,periodic,and single,dou.le-kink soliton solu.ions for the given model are ***,some new traveling wave solu.ions are developed by applying the exp(−φ(ξ))expansion *** 3D,2D and contou.s plots are drawn to demonstrate the natu.e of the nonlinear model for setting appropriate set of *** a resu.t,a collection of bright,dark,periodic,rational fu.ction and elliptic fu.ction solu.ions are *** applied strategies appear to be more powerfu. and efficient approaches to constru.t some new traveling wave stru.tu.es for variou. contemporary models of recent era.

关键词： The Hirota bilinear method Lu.p wave solu.ion Travelling wave solu.ion Exp(−φ(ξ))expansion techniqu.

Su.face Water Qu.lity Profiling u.ing Physicochemical Parameters in Open Defecation Free and Non-Open Defecation Free Local Government Areas in Benu. State, Nigeria

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Open Jou.nal of Modern Hydrology 2024年第3期14卷 174-191页

作者： Moses T. Asoo Celestine u. Agu.ru.Innocent O. Ogbonna Hyacinth O.A. Olu.a Benu. State Ministry of Health Makurdi Nigeria Department of Plant Science and Biotechnology College of Biological Sciences Joseph Sarwuan Tarka University Makurdi Nigeria Department of Microbiology College of Biological Sciences Joseph Sarwuan Tarka University Makurdi Nigeria

Physicochemical parameters of su.face water sou.ces in the stu.y of local government areas (LGAs) were assessed u.ing standard procedu.es. The mean physicochemical parameters for pH (5.49), NO2 (0.23 mg/L), SO4 (0.77 mg/L), Na (28.72 mg/L), Ca (28.94 mg/L), Mg (17.50 mg/L), Cl (11.65 mg/L), TSS (6.27 mg/L), TDS (104.23 mg/L), BOD (2.83 mg/L) and F (0.87 mg/L) were below WHO standards irrespective of their defecation statu.. The valu.s for electrical condu.tivity (EC) (2770.50 µs/cm, tu.bidity (481.24 NTu., dissolved oxygen (DO) (5.32 mg/L), chemical oxygen demand (COD) (445.50 mg/L), K (125.06 mg/L), PO4 (0.78 mg/L) and Fe (0.57 mg/L) were above the WHO limits for safe water. Higher EC and COD valu.s obtained in the stu.y is evidence of pollu.ion of the water sou.ces by organic matter.

关键词： Open Defecation Su.face Water Water Qu.lity Standard Physicochemical Parameters

Latest Carboniferou.-Early Permian Rifting of the Northern Gondwanan Margin and the Opening of the Northern Neotethys: New Evidence from the Carboniferou. and Permian Foraminiferal Assemblages from the Beyşehir-Hoyran Nappes, Central Tau.ides(Sou.hern Tu.key)

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Jou.nal of Earth Science 2024年第2期35卷 394-415页

作者： Cengiz Oku.u.u.u.Kagan Tekin Cagri Gu.gu. Kaan Sayit Department of Geological Engineering Konya Technical UniversityKonya42250Turkey Department of Geological Engineering Hacettepe UniversityAnkara06800Turkey Department of Geological Engineering Middle East Technical UniversityAnkara06800Turkey

The Beyşehir-Hoyran Nappes,one of the tectonostratigraphic u.its of the Tau.ides,are thou.ht to be originated from the Izmir-Ankara Ocean(northern branch of Neotethys).In this stu.y,Late Paleozoic rock u.its from the blocks of Beyşehir-Hoyran Nappes were stu.ied in detail u.ing foraminiferal assemblages in two different locations from the sou.hwest of Karaman City(sou.hern Tu.key).In both places,blocks/slices and pebbles of variou. origins are embedded within a highly sheared matrix of Late Cretaceou. Age,and the whole u.it can be regarded as a sedimentary mé*** ages of the blocks from the sou.hwest of Karaman City range from the Late Serpu.hovian(Late Mississippian)to Late Capitanian(Middle Permian)with some depositional breaks(e.g.,Bashkirian,Kasimovian).Combined with the previou. data from the Mersin Mélange,which also inclu.e the remnants of the Beyşehir-Hoyran Nappes,ou. new findings su.gest that a shallowing-u.ward sequ.nce,characterized by a shallow water environment with foraminifera-bearing limestones,was deposited over the Tou.naisian pelagic sequ.nce in the Beyşehir-Hoyran Nappes till the Early Moscovian(Early Middle Pennsylvanian).This shallowing-u.ward sequ.nce in the Beyşehir-Hoyran Nappes cou.d be related to the Late Paleozoic Glaciation on the Gondwana su.ercontinent(Glacial Ⅱ),which resu.ted in a sea-level drop and deposition of platform carbonates du.ing the Viséan–Early Moscovian(Middle Mississippian to Early Middle Pennsylvanian)time *** absence of the main part of the Middle-u.per Pennsylvanian deposits(continental phase du.ing the Middle Moscovian–Middle Gzhelian)in the Beyşehir-Hoyran Nappes can be mainly attribu.ed to the occu.rence of a mantle plu.e and partially to the effect of Late Paleozoic Gondwanan Glaciation(Glacial Ⅲ).Progressive u.lifting by the bu.yant mantle plu.e material has resu.ted in rifting at the center of the basin where the Beyşehir-Hoyran Nappes have *** rifting process led to tectonic destabiliz

关键词： foraminifera Carboniferou. and Permian Beyşehir-Hoyran Nappes plu.e rifting Neotethys paleontology

In search of a pan-coronaviru. vaccine:next-generation vaccine design and immu.e mechanisms

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Cellu.ar & Molecu.ar Immu.ology 2024年第2期21卷 103-118页

作者： S.Cankat M.u.Demael L.Swadling Division of Infection and Immu.ity Institute of Immunity and TransplantationUniversity College LondonPears BuildingLondon NW32PPUK

Members of the coronaviridae family are endemic to hu.an popu.ations and have cau.ed several epidemics and pandemics in recent *** this review,we will discu.s the feasibility of and progress toward the u.timate goal of creating a pan-coronaviru. vaccine that can protect against infection and disease by all members of the coronaviru. *** will detail the u.met clinical need associated with the continu.d transmission of SARS-CoV-2,MERS-CoV and the fou. seasonal coronaviru.es(HCoV-OC43,NL63,HKu. and 229E)in hu.ans and the potential for fu.u.e zoonotic *** will highlight how first-generation SARS-CoV-2 vaccines and natu.al history stu.ies have greatly increased ou. u.derstanding of effective antiviral immu.ity to coronaviru.es and have informed next-generation vaccine *** will then consider the ideal properties of a pan-coronaviru. vaccine and propose a blu.print for the type of immu.ity that may offer ***,we will describe a su.set of the diverse technologies and novel approaches being pu.su.d with the goal of developing broadly or u.iversally protective vaccines for coronaviru.es.

关键词： Vaccine Coronaviru. Cross-reactive immu.ity Cross-protection u.iversal

On some new travelling wave stru.tu.es to the(3+1)-dimensional Boiti-Leon-Manna-Pempinelli model

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Jou.nal of Ocean Engineering and Science 2024年第2期9卷 99-111页

作者： Kalim u.Tariq Ahmet Bekir Mu.ammad Zu.air Department of Mathematics Mirpur University of Science and TechnologyMirpur 10250 AJKPakistan Neighbou.hood of Akcaglan Imarli StreetNumber:28/4Eskisehir26030 Turkey

In this article,the(1/G')-expansion method,the Bernou.li su.-ordinary differential equ.tion method and the modified Ku.ryashov method are implemented to constru.t a variety of novel analytical solu.ions to the(3+1)-dimensional Boiti-Leon-Manna-Pempinelli model representing the wave propagation throu.h incompressible *** linearization of the wave stru.tu.e in shallow water necessitates more critical wave capacity conditions than it does in deep water,and the strong nonlinear properties are *** novel travelling wave solu.ions have been observed inclu.ing solitons,kink,periodic and rational solu.ions with the aid of the latest compu.ing tools su.h as Mathematica or *** physical and analytical properties of several families of closed-form solu.ions or exact solu.ions and rational form fu.ction solu.ions to the(3+1)-dimensional Boiti-Leon-Manna-Pempinelli model problem are examined u.ing Mathematica.

关键词： The(3+1)-dimensional Boiti-Leon-Manna-Pempinelli model The(1/G')-expansion method The Bernou.li su.-ODE method The modified Ku.ryashov method