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A new type U-Th-REE-Nb mineralization related to albitite:A case study from the Chachaxiangka deposit in the northeastern Qaidam Basin of China

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China Geology 2019年第4期2卷 422-438页

作者： Jun Zhong Chao-nan Hu hong-hai fan Yu-qi Cai Qing Chen Jin-yong Chen Yan-ning Meng China National Nuclear Corporation Key Laboratory of Uranium Resource Exploration and Evaluation Technology Beijing Research Institute of Uranium GeologyBeijing 100029China No.203 Research Institute of Nuclear Industry Xianyang 712000China

The U-Th-REE-Nb(Ta)-polymetallic mineralization is generally related to either the silica-undersaturated syenites,the silica-oversaturated alkaline/peralkaline granites or igneous *** this study,the authors report a new mineralization type,which is related to the magmatic-hydrothermal albitite(with mineral assemblage predominated by albite with volume content>90%),as exemplified by the Chachaxiangka deposit in Qinghai Province of *** Chachaxiangka deposit is the first albititerelated U-Th-REE-Nb deposit recognized in China and the mineralization can be divided into 3 types:the vein-type,the disseminated veinlet type and breccia type,of which the former 2 are *** mineralization stages can be identified according to the detailed mineralogical analyses,including the magmatic stage,main hydrothermal mineralization stage and post-ore *** comprehensive analyses of the mineralogical,major and trace element compositions,the authors suggest that the albitite vein is magmatic-hydrothermal in origin and both the magmatic evolution and overprint of the hydrothermal fluids play important roles in the formation of the albitite and related polymetallic *** separation between the silicate melt and carbonate/phosphate melt might take place in the magmatic stage,yet the immiscibility between the silicate melt and chloride-dominated fluids is the most important mechanism for the REE mineralization and also causes the Nb-Th re-mobilization and *** red color of the albitite aplite vein is an eye-catching prospecting mark in the field and more mineralization can be expected at depth and in the surrounding *** discovery of the new albitite type U-Th-REENb mineralization give rise to new ideas during future U-Th-REE-Nb exploration,not only in the Qaidam-Altun belt,but also other areas across China.

关键词： Albitite type mineralization Chachaxiangka Magmatic-hydrothermal mineralization system U-Th-REE-Nb deposit Qaidam-Altun UHPM belt China

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Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 311-324页

作者： Qian Yin fan Wen Zhigang Tao hai Pu Tianci Deng Yaoyao Meng Qingbin Meng hongwen Jing Bo Meng Jiangyu Wu State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China State Key Laboratory for Geomechanics&Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China Key Laboratory of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China

The mechanical behavior of cemented gangue backfill materials(CGBMs)is closely related to particle size distribution(PSD)of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples(CGBSs)with various carbon nanotube concentrations(P_(CNT))that satisfied fractal theory for the PSD of *** mechanical properties,energy dissipations,and failure mechanisms of the CGBSs under true triaxial compression were systematically *** results indicate that appropriate carbon nanotubes(CNTs)effectively enhance the mechanical properties and energy dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at P_(CNT)of 0.08wt%.Taking PSD fractal dimension(D)of 2.500 as an example,compared to that of CGBS without CNT,the peak strength(σ_(p)),axial peak strain(ε_(1,p)),elastic strain energy(Ue),and dissipated energy(U_(d))increased by 12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration,manifesting a decrease inρ_(p),ε_(1,p),and the volumetric strain increment(Δε_(v))when P_(CNT)increases from 0.08wt%to 0.12wt%.Moreover,the addition of CNTs improved the integrity of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the ***σ_(p)and U_(d)firstly increase and then decrease with increasing D,and porosity shows the opposite ***ε_(1,p)andΔε_(v)are negatively correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε_(1,p)=0.05079,Δε_(v)=0.01990)due to the frictional slip effect caused by coarse *** increasing D,the failure modes of CGBSs are sequentially manifested as oblique shear failure,"Y-shaped"shear failure,and conjugate shear failure.

关键词： cemented gangue backfill materials particle size distribution true triaxial compression test carbon nanotubes mechanical properties failure modes

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Maintaining moderate levels of hypochlorous acid promotes neural stem cell proliferation and differentiation in the recovery phase of stroke

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Neural Regeneration Research 2025年第3期20卷 845-857页

作者： Lin-Yan Huang Yi-De Zhang Jie Chen hai-Di fan Wan Wang Bin Wang Ju-Yun Ma Peng-Peng Li hai-Wei Pu Xin-Yian Guo Jian-Gang Shen Su-Hua Qi School of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina School of Chinese Medicine The University of Hong KongHong Kong Special Administrative RegionChina

It has been shown clinically that continuous removal of ischemia/reperfusion-induced reactive oxygen species is not conducive to the recovery of late ***,previous studies have shown that excessive increases in hypochlorous acid after stroke can cause severe damage to brain *** previous studies have found that a small amount of hypochlorous acid still exists in the later stage of stroke,but its specific role and mechanism are currently *** simulate stroke in vivo,a middle cerebral artery occlusion rat model was established,with an oxygen-glucose deprivation/reoxygenation model established in vitro to mimic *** found that in the early stage(within 24 hours)of ischemic stroke,neutrophils produced a large amount of hypochlorous acid,while in the recovery phase(10 days after stroke),microglia were activated and produced a small amount of hypochlorous ***,in acute stroke in rats,hypochlorous acid production was prevented using a hypochlorous acid scavenger,taurine,or myeloperoxidase inhibitor,4-aminobenzoic acid *** results showed that high levels of hypochlorous acid(200μM)induced neuronal apoptosis after oxygen/glucose deprivation/***,in the recovery phase of the middle cerebral artery occlusion model,a moderate level of hypochlorous acid promoted the proliferation and differentiation of neural stem cells into neurons and *** suggests that hypochlorous acid plays different roles at different phases of cerebral ischemia/reperfusion *** levels of hypochlorous acid(5 and 100μM)promoted nuclear translocation ofβ-*** transfection of single-site mutation plasmids,we found that hypochlorous acid induced chlorination of theβ-catenin tyrosine 30 residue,which promoted nuclear ***,our study indicates that maintaining low levels of hypochlorous acid plays a key role in the recovery of neurological function.

关键词： cell differentiation cerebral ischemia/reperfusion injury chlorination hypochlorous acid microglia neural stem cell neurogenesis nuclear translocation stroke β-catenin

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Time Evolution Caused by Hamiltonian Composed of Quadratic Combination of Canonical Operators and Time-Dependent Two-Mode Fresnel Operator

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Communications in Theoretical Physics 2006年第4X期46卷 599-602页

作者： fan hong-Yi hai-Liang Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

We show that the time-dependent two-mode Fresnel operator is just the time-evolutional unitary operator governed by the Hamiltonian composed of quadratic combination of canonical operators in the way of exhibiting SU（1,1） algebra. This is an approach for obtaining the time-dependent Hamiltonian from the preassigned time evolution in classical phase space, an approach which is in contrast to Lewis-Riesenfeld＇s invariant operator theory of treating timedependent harmonic oscillators.

关键词： time-dependent two-mode Fresnel operator quadratic combination of canonical operators Lewis-Riesenfeld's invariant operator theory

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Gut-brain axis as a bridge in obesity and depression:Mechanistic exploration and therapeutic prospects

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World Journal of Psychiatry 2025年第1期15卷 12-20页

作者： Rui-Ying fang Xiao-Rui Pan Xin-Xing Zeng Zheng-Zheng Li Bo-fan Chen hai-Min Zeng Jie Peng The Second Clinical Medical College The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina

A recent study by Wang et al,published in the World Journal of Psychiatry,provided preventative and therapeutic strategies for the comorbidity of obesity and *** gut-brain axis,which acts as a two-way communication system between the gastrointestinal tract and the central nervous system,plays a pivotal role in the pathogenesis of these *** suggests that metabolic byproducts,such as short-chain fatty acids,lipopolysaccharide and bile acids,which are generated by the gut microbiota,along with neurotransmitters and inflammatory mediators within the gut-brain axis,modulate the host's metabolic processes,neuronal regulation,and immune responses through diverse *** interaction between obesity and depression via the gut-brain axis involves disruptions in the gut microbiota balance,inflammatory immune responses,and alterations in the neuroendocrine *** the gut-brain axis,for example,through a ketogenic diet,the use of probiotics,and the supplementation of antioxidants,offers new remedial approaches for obesity and *** research that explores the mechanisms of the gut-brain axis is needed to provide more evidence for clinical treatment.

关键词： Gut-brain axis Obesity Depression Gut microbiota Mechanism

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New Approach for Calculating Wigner Functions of Generalized Two-Mode Squeezed State and Squeezed Number State via Entangled State Representation

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Communications in Theoretical Physics 2001年第12期36卷 651-656页

作者： fan hong-Yi CHENG hai-Ling Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

We construct the generalized squeezed vacuum state by virtue of the entangled state 〈η| [fan hongyi and J.R. Klauder, Phys. Rev. A47 (1994) 777] and derive the quantum fluctuation of the two-mode quadrature *** then calculate Wigner functions of the two-mode squeezed number states and generalized squeezing vacuum state in literature before.

关键词： Wigner function, generalized squeezed state, entangled state

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On Mutual Transform Between Number-Difference State and Phase State Corresponding to Operational Phase Operator

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Communications in Theoretical Physics 2005年第3X期44卷 537-540页

作者： fan hong-Yi HU hai-Peng Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China

In the mutual transform between the number-difference state and the phase state corresponding to the operational phase operator we find that there exists an end-point ambiguousness. This problem can be avoided by Ligh... 详细信息

关键词： operational phase operator phase state end-point ambiguousness

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Two-Variable Hermite Function as Quantum Entanglement of Harmonic Oscillator＇s Wave Functions

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Communications in Theoretical Physics 2007年第6期47卷 1024-1028页

作者： LU hai-Liang fan hong-Yi Department of Physics Shanghai Jiao Tong University Shanghai 200030 China

We reveal that the two-variable Hermite function hm,n, which is the generalized Bargmann representation of the two-mode Fock state, involves quantum entanglement of harmonic oscillator＇s wave functions. The Schmidt decomposition of hm,n is derived. It also turns out that hm,n can be generated by windowed Fourier transform of the single-variable Hermite functions. As an application, the wave function of the two-variable Hermite polynomial state S（γ）Hm,n （μa1^＋, μa2^＋│00〉, which is the minimum uncertainty state for sum squeezing, in （ η│representation is calculated.

关键词： two-variable Hermite function quantum entanglement Bargmann representation Schmidt decomposition

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Two-Parameter Radon Transformation of the Wigner Operator and Its Inverse

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Chinese Physics Letters 2001年第7期18卷 850-853页

作者： fan hong-Yi CHENG hai-Ling Department of Applied Physics Shanghai Jiao Tong UniversityShanghai 200030 Department of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026

Using the technique of integration within an ordered product of operators, we reveal that a new quantum mechanical representation |x,μ,v > exsit, the eigenvector of operator μQ+vP (linear combination of coordinate Q and momentum P) with eigenvalue x, which is inherent to the two-parameter(μ,v) Radon transformation of the Wigner operator. It turns out that the projection operator |x,μ,v > < x,μ,v | is just the Radon transformation of the Wigner operator. The inverse of operator Radon transformation is also derived which indicates tomography in operator version.

关键词： Radon operator Transformation

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Time evolution law of a two-mode squeezed light field passing through twin diffusion channels

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Chinese Physics B 2022年第2期31卷 196-200页

作者： hai-Jun Yu hong-Yi fan School of Materials and Engineering University of Science and Technology of ChinaHefei 230026China School of Electronic Engineering Huainan Normal UniversityHuainan 232038China

We explore the time evolution law of a two-mode squeezed light field(pure state)passing through twin diffusion channels,and we find that the final state is a squeezed chaotic light field(mixed state)with entanglement,which shows that even though the two channels are independent of each other,since the two modes of the initial state are entangled with each other,the final state remains ***,although the squeezing(entanglement)between the two modes is weakened after the diffusion,it is not completely *** also highlight the law of photon number *** the calculation process used in this paper,we make full use of the summation method within the ordered product of operators and the generating function formula for two-variable Hermite polynomials.

关键词： two-mode squeezed light field twin diffusion channels time evolution law entanglement

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