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A concise review on surface and structural modification of porous zeolite scaffold for enhanced hydrogen storage

Chinese Journal of Chemical Engineering 2024年第6期70卷 33-53页

作者： b.A.Abdulkadir r.S.r.Mohd Zaki A.T.Abd Wahab S.N.Miskan Anh-Tam Nguyen Dai-Viet N.Vo h.D.Setiabudi Centre for research in Advanced Fluid&Processes Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Faculty of Chemical&Process Engineering Technology Universiti Malaysia Pahang Al-Sultan AbdullahLebuh Persiaran Tun Khalil YaakobGambangPahang 26300Malaysia Center of Excellence for Green Energy and Environmental Nanomaterials(CE@GrEEN) Nguyen Tat Thanh University300A Nguyen Tat ThanhDistrict 4Ho Chi Minh City 755414Viet Nam

Investigating zeolites as hydrogen storage scaffolds is imperative due to their porous nature and favorable physicochemical ***,the storage capacity of the unmodified zeolites has been rather unsatisfactory(0.224%-1.082%(mass))compared to its modified ***,the contemporary focus on enhancing hydrogen storage capacities has led to significant attention towards the utilization of modified zeolites,with studies exploring surface modifications through physical and chemical treatments,as well as the integration of various active *** enhanced hydrogen storage properties of zeolites are attributed to the presence of aluminosilicates from alkaline and alkaline-earth metals,resulting in increased storage capacity through interactions with the charge density of these ***,there is a great demand to critically review their role such as well-defined topology,pore structure,good thermal stability,and tunable hydrophilicity in enhanced hydrogen *** article aimed to critically review the recent research findings based on modified zeolite performance for enhanced hydrogen *** of the factors affecting the hydrogen storage capacities of zeolites that can affect the rate of reaction and the stability of the adsorbent,like pressure,structure,and morphology were studied,and ***,future perspectives,recommendations,and directions for modified zeolites were discussed.

关键词： Zeolites hydrogen storage Surface modification Adsorption Active metal

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Evidence for particle acceleration approaching PeV energies in the W51 complex

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Science bulletin 2024年第18期69卷 2833-2841页

作者： LhAASO Collaboration Zhen Cao F.Aharonian Axikegu Y.X.bai Y.W.bao D.bastieri X.J.bi Y.J.bi W.bian A.V.bukevich Q.Cao W.Y.Cao Zhe Cao J.Chang J.F.Chang A.M.Chen E.S.Chen h.X.Chen Liang Chen Lin Chen Long Chen M.J.Chen M.L.Chen Q.h.Chen S.Chen S.h.Chen S.Z.Chen T.L.Chen Y.Chen N.Cheng Y.D.Cheng M.Y.Cui S.W.Cui X.h.Cui Y.D.Cui b.Z.Dai h.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.Duan J.h.Fan Y.Z.Fan J.Fang J.h.Fang K.Fang C.F.Feng h.Feng L.Feng S.h.Feng X.T.Feng Y.Feng Y.L.Feng S.Gabici b.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.h.Gong Q.b.Gou M.h.Gu F.L.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.han M.hasan h.h.he h.N.he J.Y.he Y.he Y.K.hor b.W.hou C.hou X.hou h.b.hu Q.hu S.C.hu D.h.huang T.Q.huang W.J.huang X.T.huang X.Y.huang Y.huang X.L.Ji h.Y.Jia K.Jia K.Jiang X.W.Jiang Z.J.Jiang M.Jin M.M.Kang I.Karpikov D.Kuleshov K.Kurinov b.b.Li C.M.Li Cheng Li Cong Li D.Li F.Li h.b.Li h.C.Li Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li X.r.Li Xin Li Y.Z.Li Zhe Li Zhuo Li E.W.Liang Y.F.Liang S.J.Lin b.Liu C.Liu D.Liu D.b.Liu h.Liu h.D.Liu J.Liu J.L.Liu M.Y.Liu r.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo h.K.Lv b.Q.Ma L.L.Ma X.h.Ma J.r.Mao Z.Min W.Mitthumsiri h.J.Mu Y.C.Nan A.Neronov L.J.Ou P.Pattarakijwanich Z.Y.Pei J.C.Qi M.Y.Qi b.Q.Qiao J.J.Qin A.raza D.ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng F.W.Shu h.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.Sun Q.N.Sun X.N.Sun Z.b.Sun J.Takata P.h.T.Tam Q.W.Tang r.Tang Z.b.Tang W.W.Tian C.Wang C.b.Wang G.W.Wang h.G.Wang h.h.Wang J.C.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.h.Wang r.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.J.Wang Z.h.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu h.r.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.Xi J.Xia G.M.Xiang D.X.Xiao G.Xiao Y.L.Xin Y.Xing D.r.Xiong Z.Xiong D.L.Xu r.F.Xu r.X.Xu W.L.Xu L.Xue D.h.Yan J.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang r.Z.Yang W.X.Yang Y.h.Yao Z.G.Yao L.Q.Yin N.Yin X.h.You Z.Y.You Y.h.Yu Q.Yuan h.Yue h.D.Zeng T.X.Zeng W.Zeng M.Zha b.b.Zhang F.Zhang h.Zhang 不详 Key Laboratory of Particle Astrophysics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic ray research Center ChengduChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 103980Heidelberg 69029Germany School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear research of russian Academy of Sciences Moscow 117312Russia hebei Normal University Shijiazhuang 050024China University of Science and Technology of China Hefei 230026China State Key Laboratory of Particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Physics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic rays(Tibet University) Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Physics and Astronomy(Zhuhai)&School of Physics(Guangzhou)&Sino-French Institute of Nuclear Engineering and Technology(Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray emission from the W51 complex is widely acknowledged to be attributed to the interaction between the cosmic rays(Crs)accelerated by the shock of supernova remnant(SNr)W51C and the dense molecular clouds in the adjacent star-forming region,***,the maximum acceleration capability of W51C for Crs remains *** on observations conducted with the Large high Altitude Air Shower Observatory(LhAASO),we report a significant detection ofγrays emanating from the W51 complex,with energies from 2 to 200 *** LhAASO measurements,for the first time,extend theγ-ray emission from the W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay bump"featured data from Fermi-LAT,the broadbandγ-ray spectrum of the W51 region can be well-characterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~200 TeV in the Cr proton spectrum,most likely providing the first evidence of SNrs serving as Cr accelerators approaching the PeV ***,two young star clusters within W51b could also be theoretically viable to produce the most energeticγrays observed by *** findings strongly support the presence of extreme Cr accelerators within the W51 complex and provide new insights into the origin of Galactic Crs.

关键词： UhE c-ray Cosmic rays SNr W51C Star clusters

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Efficient guiding and focusing of intense laser pulse using periodic thin slits

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Matter and radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.W.huang K.Jiang C.N.Wu h.Peng P.C.hen r.Li h.b.Zhuo C.T.Zhou Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits have been widely used in laser-plasma interactions as plasma optical components for generating high-harmonic light and controlling laser-driven particle ***,we propose and demonstrate that periodic thin slits can be regarded as a new breed of optical elements for efficient focusing and guiding of intense laser *** fundamental physics of intense laser interaction with thin slits is studied,and it is revealed that relativistic effects can lead to enhanced laser focusing far beyond the pure diffractive focusing *** addition,the interaction of an intense laser pulse with periodic thin slits makes it feasible to achieve multifold enhancement in both laser intensity and energy transfer efficiency compared with conventional *** results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applications.

关键词： laser pulse intense

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由超拍电子伏特加速器产生的超高能伽马射线气泡

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Science bulletin 2024年第4期69卷 449-457页

作者： LhAASO Collaboration Zhen Cao Chuandong Gao Cong Li ruo-Yu Liu ruizhi Yang 不详 Key Laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic ray research Center ChengduChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China School of Astronomy and Space Science Nanjing UniversityNanjing 210023China University of Science and Technology of China Hefei 230026China

We report the detection of aγ-ray bubble spanning at least 100deg2 in ultra-high energy(UhE)up to a few PeV in the direction of the star-forming region Cygnus X,implying the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with the photon indexΓ(E)=(2.71±0.02)+(0.11±0.02)×log10(E/10 TeV)is found fitting the gamma-ray energy spectrum of the bubble *** sources,“hot spots”correlated with very massive molecular clouds,and a quasi-spherical amorphousγ-ray emitter with a sharp central brightening are observed in the *** the core of~0.5°,spatially associating with a region containing massive Ob association(Cygnus Ob2)and a microquasar(Cygnus X-3),as well as previously reported multi-TeV sources,an enhanced concentration of UhEγ-rays is observed with 2 photons at energies above 1 *** general feature of the bubble,the morphology,and the energy spectrum,are reasonably reproduced by the assumption of a particle accelerator in the core,continuously injecting protons into the ambient medium.

关键词： Cosmic rays γ-rays Interstellar medium Star cluster

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温度对酶促聚对苯二甲酸乙二醇酯降解机理的影响研究

温度对酶促聚对苯二甲酸乙二醇酯降解机理的影响研究

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作者：伊科拉木·艾克然木北京化工大学

学位级别：硕士

随着塑料污染问题日益严重,如何高效、环保地回收和再利用塑料成为研究热点。其中,聚对苯二甲酸乙二醇酯（PET）作为广泛使用的塑料之一,其酶法回收引起了科研人员的广泛关注。PET的酶法降解是一种发生在不可溶聚合物表面的界面催化过程... 详细信息

随着塑料污染问题日益严重,如何高效、环保地回收和再利用塑料成为研究热点。其中,聚对苯二甲酸乙二醇酯（PET）作为广泛使用的塑料之一,其酶法回收引起了科研人员的广泛关注。PET的酶法降解是一种发生在不可溶聚合物表面的界面催化过程,通过水解PET聚合物表面的酯键,将聚合物逐渐分解成单体。反应温度对于PET的降解过程具有重要影响,涉及酶的催化活性、热稳定性以及PET材料的生物可降解性等方面。深入了解PET酶降解过程的热力学和动力学调控机制,对PET降解酶的挖掘与改造和酶法降解工艺的优化具有重要意义。首先,本论文以叶枝堆肥角质酶（LCC）的热稳定突变体WCCG为研究对象,通过使用低结晶度PET（LC-PET,结晶度7.6%）和高结晶度PET（hC-PET,结晶度～30%）作为底物,系统地研究了温度对酶促PET降解的影响。酶法降解PET需要在接近或高于PET的玻璃化转变温度（Tg）下进行,因为此时无定形聚合物链段的柔性和活性增加,有利于酶催化降解。过去的研究通常建议在PET整体的玻璃化转变温度(Tg,b)附近（约70°C）进行PET的酶降解。实验结果显示,在约45°C的温度下(低于通常认为的Tg,b值约20°C),降解反应的活化能突然降低,表明此时PET微颗粒表面的玻璃化转变已经开始,酶促降解已经能够有效进行,展现出了酶解PET的界面催化特征。然而,当温度高于75°C时,PET降解速率迅速降低,因为酶受热失活。其次,研究发现WCCG存在热激活现象:通过将WCCG在不同温度下孵育一段时间后再测活,WCCG在50至70°C范围内温育后活性显著提高。利用圆二色光谱和荧光光谱检测WCCG的二级和三级结构的变化,发现热处理后的WCCG中的α-螺旋含量显著减少,而β-折叠含量增加,导致酶分子疏水性提高,这与分子动力学模拟结果一致。单分子力谱测试结果表明,热处理后的WCCG与PET薄膜之间的粘附力增强。此外,WCCG在降解高结晶度PET的过程中也存在类似热激活现象。最后,通过比较LC-PET和hC-PET在酶降解过程中的结晶度和反应速率的变化,分析了长期降解过程中,酶的热激活现象和PET的再结晶现象对降解效率的影响。实验结果显示,LC-PET在降解反应的初始阶段（约70°C）表现出最高的降解速率,但随着反应的进行和底物的再结晶,高温条件对PET的降解产生不利影响。相比之下,尽管hC-PET的整体结晶度几乎没有变化,但在最初3 h内的降解速率急剧下降,这表明PET的解聚速度主要受到表面结晶度的影响。温度对PET酶解降解的影响是一个复杂的问题。未来的研究需要专注于开发具有高活性和高稳定性的PET水解酶,并着重考察在45到70°C范围内酶的活性情况。此外,温度也会对酶的稳定性和PET材料的性质产生影响,因此对于未来的研究和工业应用有着重要的指导意义。

关键词：聚对苯二甲酸乙二酯酶法降解酶的热激活活化能表面玻璃化转变

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An update on hormonal regulation of early embryo-fallopian tube interactions: insights for improvements of assisted reproductive technology outcomes

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reproductive and Developmental Medicine 2024年第1期8卷 39-49页

作者： Suranga P.Kodithuwakku Ernest h.Y.Ng William S.b.Yeung Kai-Fai Lee Department of Obstetrics and Gynaecology LKS Faculty of MedicineThe University of Hong KongHong Kong SAR 999077China Department of Animal Science Faculty of AgricultureUniversity of PeradeniyaPeradeniya 20400Sri Lanka Shenzhen Key Laboratory of Fertility regulation.The University of hong Kong-Shenzhen hospital Shenzhen 518053China

human fallopian tubes(FTs)play important roles in the whole reproductive *** are the site for the final maturation of gametes,fertilization,transport of preimplantation embryos,and early embryonic development before entering the *** these functions are critical in the establishment of a successful *** the embryo is in transit through the FT,the FT microenvironment changes through endocrine,paracrine,autocrine,and juxtacrine mechanisms which involve various hormones and bioactive substances mainly from the neighboring ***,the interactions between the embryo and the FT may be the earliest embryo-maternal communications that are essential for the establishment of *** review critically discusses the evidence of various hormonal and bioactive mediated control of the microenvironment in the FTs during the earliest embryo-maternal ***,we highlight existing gaps in the knowledge and the importance of exploring more of the physiology of FTs which will hold the key to producing high-quality embryos for patients seekingin vitro fertilization(IVF)treatments.

关键词： Fallopian tube Embryo Maternal-embryo communication hormonal control

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柔性神经探针：当前的优点、缺点及未来需求（英文）

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Journal of Zhejiang University-Science b(biomedicine & biotechnology) 2024年第2期 153-168页

作者： Sara PIMENTA Jo?o r.FrEITAS José h.COrrEIA CMEMSUMinho 米尼奥大学 LAbbELS联合实验室

脑部疾病影响着数百万人，并对社会和经济产生巨大影响。在动物研究中，神经探针的应用一直是增进神经网络功能知识的主要途径。神经科学家正在努力开发新型且更加有效的神经疾病治疗方法。近年来，多功能神经探针（包括电学、光学和流... 详细信息

脑部疾病影响着数百万人，并对社会和经济产生巨大影响。在动物研究中，神经探针的应用一直是增进神经网络功能知识的主要途径。神经科学家正在努力开发新型且更加有效的神经疾病治疗方法。近年来，多功能神经探针（包括电学、光学和流体相互作用）的研发不断增加，产生了更高时空分辨率的设备。增加神经探针的适用性以及集成元素，促进了柔性接口的需求，减少了探针植入期间对神经组织的损伤，并提高了神经采集数据的质量。本文综述了几种柔性神经探针的制备、表征和验证，探讨了这些器件的主要优缺点。最后，对其今后的发展及应用作了展望。总体而言，本综述旨在介绍目前可用的柔性神经探针设备及其未来可能的发展途径，为未来设备设计提供指导。

关键词：脑神经柔性接口多功能探针

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Multiple scales method for analyzing a forced damped rotational pendulum oscillatorwithgallows

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Communications in Theoretical Physics 2024年第5期76卷 58-67页

作者： haifa A Alyousef Alvaro h Salas b M Alotaibi S A El-Tantawy Department of Physics College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Mathematics and Statistics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Physics Faculty of SciencePort Said UniversityPort Said 42521Egypt research Center for Physics(rCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

This study reports the analytical solution for a generalized rotational pendulum system with gallows and periodic excited *** multiple scales method(MSM)is applied to solve the proposed *** types of rotational pendulum oscillators are studied and talked about in *** include the forced damped rotating pendulum oscillator with gallows,the damped standard simple pendulum oscillator,and the damped rotating pendulum oscillator without *** MSM first-order approximations for all the cases mentioned are derived in *** obtained results are illustrated with concrete numerical *** first-order MSM approximations are compared to the fourth-order runge-Kutta(rK4)numerical ***,the maximum error is estimated for the first-order approximations obtained through the MSM,compared to the numerical approximations obtained by the rK4 ***,we conducted a comparative analysis of the outcomes obtained by the used method(MSM)and he-MSM to ascertain their respective levels of *** proposed method can be applied to analyze many strong nonlinear oscillatory equations.

关键词： rotational pendulum system multiple scales method approximate solution damped oscillations forced pendulum with gallows he-multiple scales method

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Multiomics approaches to uncover endometrial receptivity in embryo implantation:a mini-review

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reproductive and Developmental Medicine 2024年第3期8卷 178-185页

作者： Sudini r.Fernando Yang Yan Manish Kumar hoi-Lam Lai Yin-Lau Lee Ernest h.Y.Ng William S.b.Yeung Kai-Fai Lee Department of Obstetrics and Gynaecology Li Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong SAR 999077China Department of Animal Science Faculty of Animal Science and Export AgricultureUva Wellassa UniversityBadullaSri Lanka Shenzhen Key Laboratory of Fertility regulation The University of Hong Kong-Shenzhen HospitalFutian DistrictShenzhen 518053China

Successful implantation requires concerted interactions during the apposition,adhesion,and invasion of the embryo into a receptive ***,the embryo implantation rate for assisted reproduction remains low despite the transfer of good quality *** in endometrial transcriptomics,proteomics,lipidomics,and even microbiota all play important roles in embryo ***,the expression of steroid hormone-regulated adhesive and anti-adhesive molecules during the embryo implantation window is becoming an area of increasingly intense *** review(a)summarizes the different molecules expressed in the receptive endometrium and(b)proposes the use of surface protein markers to predict pregnancy outcomes from assisted reproduction.

关键词： Cell surface proteins Steroid regulation Endometrial receptivity receptivity marker Infertility

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Exploring Variability in Sea Level at a Tide Gauge Station through Control Charts

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Journal of Environmental & Earth Sciences 2024年第1期6卷 11-18页

作者： h.bâkiİz Independent Scholar Boca Raton Florida33496USA

Monitoring temporal changes in sea level is important in assessing coastal *** level anomalies at a tide gauge station,if kinematically conceived,include systematic variations such as trend,acceleration,periodic oscillations,and random *** them,the non-stationary nature of the random sea level variations of known or unknown origin at coastal regions has been long recognized by the sea level *** study proposes the analyses of subgroups of random residual statistics of a rigorously formulated kinematic model solution of tide gauge variations using X-bar and S control *** approach is demonstrated using Key West,Florida tide gauge *** mean and standard errors of 5-year-long subgroups of the residuals revealed that sea level changes at this location have been progressively intensifying from 1913 to the *** oscillations in sea level at this locality may be attributed partly to the thermal expansion of seawater with increasing temperatures causing larger buoyancy-related sea level fluctuations as well as the intensification of atmospheric events including wind patterns and the impact of changes in inverted barometer effects that will alter coastal risk assessments for the future.

关键词： Climate change Sea level variance X-bar S control charts

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