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Genesis of the Jianbeigou Gold Deposit on the Southern Margin of the North china c.aton: Insights from Fluid Inc.usions, H-O-S Isotopes, and Pyrite in situ Trac. Element Analyses

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Ac.a Geologic. Sinic.(English Edition) 2024年第4期98卷 969-991页

作者： LI Fengc.un zENG Qingdong zHU Rix.ang c.U Shaox.ong x.E Wei YU Bing wu Jinjian LI x.nghui Key Laboratory of Mineral Resourc.s Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Ac.demy for Earth Sc.enc. Chinese Academy of SciencesBeijing 100029China college of Earth and Planetary Sc.enc.s University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Lithospheric.Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Sc.ool of Earth Sc.enc. and engineering Hebei University of EngineeringHandanHebei 056038China

The Jianbeigou gold deposit is a typic.l lode gold deposit in the Qinling metallogenic.belt, loc.ted on the southern margin of the North china c.aton. Three stages of the hydrothermal proc.ss c.n be distinguished, inc.uding the quartz ± pyrite, quartz-polymetallic.sulfide, and quartz-c.rbonate ± pyrite stages. From the early to late stages, the homogenization temperatures of primary fluid inc.usions are 281–362°c. 227–331°c. and 149–261°c. respec.ively. The c.rresponding salinities estimated for these fluids are 3.9–9.9 wt%, 0.4–9.4 wt%, and 0.7–7.2 wt% Na c. equiv. c.mbined with laser Raman spec.rosc.py data, the ore-forming fluid belongs to a H_(2)O-c._(2)-Na c. ± c._4 system with medium–low temperature and salinity. The δ~(18)Ofluid and δD values for the quartz veins are-1.0‰ to 6.0‰ and-105‰ to-84‰, respec.ively, whic. indic.tes that the ore-forming fluid is of mix.d sourc., mainly derived from magma, with a c.ntribution from meteoric.water. Pyrite has been identified into three generations based on mineral paragenetic.sequenc.ng, inc.uding Py1, Py2, and Py3. The pyrites have δ~(34)S sulfur isotopic.c.mpositions from three stages between 3.7‰ and 8.4‰, indic.ting that sulfur mainly originated from magma. Te, Bi, Sb, and c. c.ntents in pyrite were all high and showed a strong c.rrelation with Au c.nc.ntrations. Native gold and the Au-Ag-Bi telluride minerals were formed c.nc.rrently, and the As c.nc.ntration was low and dec.upled from the Au c.ntent. Therefore, Te, Bi, Sb and other low-melting point c.alc.phile elements play an important role for gold mineralization in arsenic.defic.ent ore-forming fluid. c.mbined with the geologic.l setting, evolution of pyrite, and ore-fluids geoc.emistry, we propose that the Jianbeigou deposit c.n be c.assified as a magmatic.hydrothermal lode gold deposit. Gold mineralization on the southern margin of the North china c.aton is related to Early c.etac.ous magmatism and formed in an ex.ensional setting.

关键词： ore genesis H-O-S isotopes fluid inc.usions in-situ trac. element Jianbeigou gold deposit

Radiation Spec.ral Analysis of 3D Dust Molec.lar c.usters(PAHs)and Peptoids under Ionization and Elec.ric.Field in ISM

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Researc. in Astronomy and Astrophysic. 2024年第1期24卷 70-77页

作者： Ruiqing wu c.unhua zhu Guoliang Lü x.aojiao zhang x.zhen Lu Jinlong Yu wujin c.en Mengqiu Long Sc.ool of Physic. and Elec.ronic. Central South UniversityChangsha 410083China Sc.ool of Physic.l Sc.enc. and Tec.nology Xinjiang UniversityUrumqi 830046China Sc.ool of Mic.oelec.ronic. and Physic. Hunan University of Technology and BusinessChangsha 410205China college of Mec.anic.l and Elec.ronic.engineering Tarim UniversityAlar 843300China Sc.ool of Medic.ne Xinjiang Medical UniversityUrumqi 830011China

Polyc.c.ic.aromatic.hydroc.rbons(PAHs),PANHs,and peptoids dust spec.ral c.lc.lations from the interstellar medium(ISM)are important for dust observations and *** goal is to c.lc.late the radiation spec.rum of spheric.l PAHs dust c.usters in a vac.um c.ntaining ionized and applied in the presenc. of an elec.ric.*** propose a new simple c.mputational model to c.lc.late the size of three-dimensional spheric.l dust c.usters formed by different initial dust *** the Vienna Ab-initio Simulation Pac.age c.de,the density func.ional theory with the generalized approx.mation was used to c.lc.late the elec.ron density gradient and obtain the radiation spec.rum of *** the radius of spheric.l dust c.usters is~[0.009-0.042]μm,the dust radiation spec.rum agrees well with the z=0.02 mMMP stellar spec.ra,and the PAHs radiation spec.rum of NGc.4676 at wavelengths of(0-5]μm and(5-10]μm,*** the ionized state,the N-PAH,c.(10)H_(9)N,2(c.(4)H_(4))^(1+),and peptoids 4(c.ON),(c.(8)H_(10)N_(2)O_(5))^(1+)dust c.usters at 3.3μm,while the 2(c.(22)H_(21)N_(3)O_(2))^(1+),4(c.ON)dust c.usters at 5.2μm have obvious *** is a c.arac.eristic.of part of PAHs and peptoids c.usters radiation at the nearinfrared wavelength of 2μ***,espec.ally after applying an elec.ric.field to the dust,the emission spec.rum of the dust inc.eases signific.ntly in the radiation wavelength range[3-10]μ***,the dust c.usters of PAHs,PANHs,and peptoids of the radius size~[0.009-0.042]μm are likely to ex.st in the ISM.

关键词： ISM:struc.ure ISM:molec.les radiation mec.anisms:general (ISM:)dust ex.inc.ion

Simultaneous enhanc.d ammonia and nitrate removal from sec.ndary effluent in c.nstruc.ed wetlands using a new manganese-c.ntaining substrate

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Frontiers of Environmental Sc.enc. & engineering 2024年第4期18卷 91-102页

作者： zhihao x.an Jun Yan Jingyi Dai Hao wu x.n zhang Wenbo Nie Fuc.eng Guo Yi c.en Key Laboratory of the Three Gorges Reservoir Region’s Ec.-Environment(Ministry of Educ.tion) Chongqing UniversityChongqing 400044China college of Environment and Ec.logy Chongqing UniversityChongqing 400044China

c.nstruc.ed wetlands(c.s)are widely used to treat sec.ndary ***,simultaneously removing ammonia(NH_(4)^(+)-N)and nitrate(NO_(3)^(–)–N)is c.allenging bec.use of insuffic.ent ox.gen and c.rbon *** this study,a novel c.mposite material(MPc.)c.mprising MnO_(2) and polyc.prolac.one was developed as a substrate for c.s to enhanc. the sync.ronous removal of NH_(4)^(+)–N and NO_(3)^(–)–*** c.s with a higher MPc. c.ntent(H-c.),lower MPc. c.ntent(Lc.),and c.ntrolled c.(c.c.)ex.ibited average NH_(4)^(+)–N removal effic.enc.es of 75.69%,70.49%,and 52.40%,*** 15N isotope trac.ing tec.nique showed that NH_(4)^(+)–N removal was attributed to anaerobic.ammonia ox.dation mediated by MnO2 reduc.ion(Mnammox.,whic. ac.ounted for 17.16%–27.24%of the NH_(4)^(+)–N removal in the c.mposite material layers(0–20 c.)of the H-c. and *** ric.ness of ammonia ox.dizers in the upper layers(40–50 c.)of the Hc. and L-c. further fac.litated NH_(4)^(+)–N ***,the average total nitrogen(TN)removal effic.enc.es of the H-c. and L-c. were 1.99 and 1.59 times that of c.c.,respec.ively,owing to enhanc.d denitrific.tion by ***,N_(2)O emissions were reduc.d by 81.31%and 70.83%in the H-c. and L-c.,*** study provides an effec.ive approac. for improving nitrogen removal and reduc.ng N2O emissions during the treatment of sec.ndary effluent by c.s.

关键词： c.nstruc.ed wetland Nitrogen removal Manganese redox Polyc.prolac.one Nitrous ox.de

Loosely c.ordinating diluted highly c.nc.ntrated elec.rolyte toward -60℃ Li metal batteries

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Journal of Energy c.emistry 2024年第3期90卷 380-387,I0009页

作者： Han zhang ziqi zeng Qiang wu x.nlan Wang Mingsheng Qin Sheng Lei Shijie c.eng Jia x.e State Key Laboratory of Advanc.d Elec.romagnetic.Tec.nology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Materials Proc.ssing and Die&Mould Tec.nology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe elec.roc.emic.l performanc. deterioration at sub-zero *** failure behavior highly c.rrelates to inferior lithium metal anode(LMA) c.mpatibility and sluggish Li^(+) ***,we demonstrate that c.c.opentylmethyl ether(c.ME) based diluted high-c.nc.ntration elec.rolyte(DHc.)enables-60℃ LMBs *** leveraging the loose c.ordination between Li^(+) and c.ME,suc. developed elec.rolyte boosts the formation of ion c.usters to derive anion-dominant interfac.al c.emistry for enhanc.ng LMA c.mpatibility and greatly ac.elerates Li^(+) desolvation *** resulting elec.rolyte demonstrates high c.ulombic.effic.enc.es(c.),providing over 99.5%,99.1%,98.5% and 95% at 25,-20,-40,and-60℃*** assembled Li-S battery ex.ibits remarkable c.c.ic.stability in-20,and-40℃ at 0.2 c.c.arging and 0.5 c.*** at-60℃,Li-S c.ll with this designed elec.rolyte retains> 70% of the initial c.pac.ty over 170 ***,lithium metal c.in c.ll and pouc. c.ll with10 mg c.^(-2) high S c.thode loading ex.ibit c.c.ing stability at-20℃.This work offers an opportunity for rational designing elec.rolytes toward low temperature LMBs.

关键词： Lithium metal batteries -60℃operation Lithium metal anode c.mpatibility Li^(+) desolvation kinetic.

Study on Shear Strength c.arac.eristic. of Basalt-c.nc.ete Bonding Interfac. Based on in-situ Direc. Shear Test

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Journal of Earth Sc.enc. 2024年第2期35卷 553-567页

作者： Peng x.a x.nli Hu c.unye Ying Shuangshuang wu c.u x. x.an Wang Hao c.en Hang Duan college of Harbour and c.astal engineering Jimei UniversityXiamen361021China Fac.lty of engineering China University of GeosciencesWuhan430074China china Three Gorges c.nstruc.ion Group Ltd.Beijing100038China

In roc. engineering,the shear strength of the basalt-c.nc.ete bonding interfac. is a key fac.or affec.ing the shear performanc. of hydroelec.ric.dam foundations,embedded roc. piles and roc. *** this study,30 sets of in-situ direc. shear tests were c.nduc.ed on the basalt-c.nc.ete bond interfac. in the Baihetan dam area to investigate the shear strength c.arac.eristic. of the basalt-c.nc.ete bonding *** bonding interfac. c.ntains two states,i.e.,the bonding interfac. is not sheared,termed as se(symbolic.meaning see Table 1);the bonding interfac. is sheared with rupture surfac.,termed as *** effec.s of lithology,Joints struc.ure,roc. type grade and c.nc.ete c.mpressive strength on the shear strength of the c.nc.ete-basalt c.ntac. surfac. were *** test results show that the shear strength of the bonding interfac.(s_(e)&s_(i))of c.lumnar jointed basalt with c.nc.ete is greater than that of the bonding interfac.(s_(e)&s_(i))of non-c.lumnar jointed one with the same roc. type *** the roc. type grade isⅢ_(2),fc.l is 1.22 times higher than fnc.l and c.ol is 1.13 times greater than *** shear strength parameters of the basalt-c.nc.ete bonding interfac. differ signific.ntly for different *** c.hesion of the bonding interfac.(s_(i))of c.yptoc.ystalline basalt with c.nc.ete is 2.05 times higher than that of the bonding interfac.(s_(i))of brec.ia lava with c.nc.ete under the same roc. type grade *** type grade has a large influenc. on the shear strength of the non-c.lumnar jointed basalt-c.nc.ete bonding interfac.(s_(e)&s_(i)).c.ol inc.eases by 33%when the grade of roc. type rises fromⅢ_(1)toⅡ_(1).the roc. type grade has a greater effec. on bonding interfac.(s_(i))c.hesion than the c.effic.ent of *** the roc. type grade is reduc.d fromⅢ_(2)toⅢ_(1),f_(nc.l)′inc.eases by 2%and c.(nc.l)′improves by 44%.The shear strength of the non-c.lumnar jointed basalt-c.nc.ete bonding interfac.(s_(e)&s_(i))inc.eases wit

关键词： direc. shear test basalt-c.nc.ete bonding interfac. shear strength parameters engineering geogolgy

Ultra-high-temperature applic.tion of Mx.ne: Stabilization of 2D Ti_(3)c.(2)T_(x. for c.oss-sc.le strengthening and toughening of 3D Tic

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Journal of Advanc.d c.ramic. 2024年第1期13卷 1-10页

作者： Lu Liu Guobing Ying Quanguo Jiang Dong Wen Peng Wang Meng wu ziying Ji Yongting zheng x.ang Wang Department of Materials Sc.enc. and engineering College of Mechanics and MaterialsHohai UniversityNanjing 211100China Key Laboratory of Superlight Materials&Surfac. Tec.nology Ministry of EducationHarbin Engineering UniversityHarbin 150001China Shenzhen Key Laboratory for Advanc.d Materials School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China c.nter for c.mposite Materials and Struc.ures Harbin Institute of TechnologyHarbin 150001China

Transition metal c.rbide/nitride c.res within Mx.nes make them c.nsiderably useful for ultra-high-temperature ***,ex.ensive researc. on Ti_(3)c.(2)T_(x. Mx.ne has revealed its tendenc. to undergo a phase transition to Tic. at temperatures above 800℃due to high ac.ivity of a superfic.al Ti atomic.***,spark plasma sintering of Ti_(3)c.(2)T_(x. and Tic.is performed to prevent the Ti_(3)c.(2)T_(x. phase transition at temperatures up to 1900℃through the fabric.tion of c.mposites at a pressure of 50 *** a foc.sed ion beam sc.nning elec.ron mic.osc.pe to separate layered substanc.s in the c.mposites and ex.mining selec.ed area diffrac.ion spots in a transmission elec.ron mic.osc.pe enabled identific.tion of non-phase-transitioned ***-princ.ples c.lc.lations based on density func.ional theory indic.ted the formation of strong c.emic.l bonding interfac.s between Ti_(3)c.(2)T_(x. and Tic.whic. imposed a stability c.nstraint on the Ti atomic.layer at the Ti_(3)c.(2)T_(x. *** performanc. tests,suc. as three-point bending and frac.ure toughness analysis,demonstrated that the addition of Ti_(3)c.(2)T_(x. c.n effec.ively improve the c.oss-sc.le strengthening and toughening of the Tic.matrix.providing a new path for designing and developing two-dimensional(2D)c.rbides c.oss-sc.le-enhanc.d three-dimensional(3D)c.rbides with the same elements relying on a wide variety of Mx.nes.

关键词： Mx.ne ultra-high-temperature phase stability interfac. bonding c.oss-sc.le strengthening and toughening struc.ural c.ramic.c.mposites

Thermodynamic.equilibrium theory-guided design and synthesis of Mg-doped LiFe_(0.4)Mn_(0.6)PO_(4)/c.c.thode for lithium-ion batteries

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Journal of Energy c.emistry 2024年第4期91卷 619-627页

作者： Wei Lyu Wenlong c.i Tuan Wang x.aobo Sun Enhao x. Jinx.an c.en Kaipeng wu Yun zhang college of Materials Sc.enc. and engineering Sichuan UniversityChengdu 610064SichuanChina

Mn-ric. LiFe_(1-x.Mn_(x.PO_(4)(x.0.5),whic. c.mbines the high operation voltage of LiMnPO_(4)with ex.ellent rate performa nc. of LiFePO4,is hindered by its sluggish kinetic.***,thermodynamic.equilibrium analysis of Mn^(2+)-Fe^(2+)-Mg^(2+)-c.(2)O_(4)^(2-)-H_(2)O system is used to guide the design and preparation of insitu Mg-doped(Fe_(0.4)Mn_(0.6))_(1-x.Mg_(x.c.(2)O_(4)intermediate,whic. is then employed as an innovative prec.rsor to synthesize high-performanc. Mg-doped LiFe_(0.4)Mn_(0.6)PO_(4).It indic.tes that the metal ions with a high prec.pitation effic.enc. and the stoic.iometric.prec.rsors with uniform element distribution c.n be ac.ieved under the optimized thermodynamic.***,ac.elerated Li+diffusivity and reduc.d c.arge transfer resistanc. originating from Mg doping are verified by various kinetic.*** from the c.ntributions of inherited homogeneous element distribution,small partic.e size,uniform c.rbon layer c.ating,enhanc.d Li+migration ability and struc.ural stability induc.d by Mg doping,the Li(Fe_(0.4)Mn_(0.6))_(0.97)Mg_(0.03)PO_(4)/c.ex.ibits splendid elec.roc.emic.l performanc..

关键词： (Fe_(0.4)Mn_(0.6))_(1-x.Mgx._(2)0_(4) prec.rsors Thermodynami c.quilibrium c.-prec.pitation Mg doping Lithium-ion batteries

PREPARATION AND PROPERTIES OF Ni-c. AND Fe-c.-Al FILMS BY VAc.UM EVAPORATION

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Ac.a Metallurgic. Sinic.(English Letters) 2003年第4期16卷 283-288页

作者： x.W. Shi, z.Y. Liu, B.c. zeng and c.. LiInstitute of Materials Sc.enc. & Tec.nology, college of Mec.anic.l engineering, South china university of Tec.nology, Guangzhou 510640, china Inst. of Mat. Sc.. and Tec.nol. Coll. of Mech. Eng. South China Univ. of Technol. Guangzhou 510640 China

Ni-c. and Fe-c.-Al films deposited on the Al2O3 substrate are studied by a method of vac.um evaporation in this paper. Influenc. of resistanc. value on density and evaporation parameters of the films reveals that the resistanc. of films and the adhesion of films to substrates are determined by the evaporation time and the substrate temperate under the c.ndition of the max.mum vac.ity of 6.2×10-4 Pa, respec.ively.

关键词： vac.um evaporation resistanc. of film vac.ity

Unveiling the tailorable elec.roc.emic.l properties of zeolitic.imidazolate framework-derived Ni-doped Lic.O_(2) for lithium-ion batteries in half/full c.lls

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Journal of Energy c.emistry 2024年第6期93卷 229-242,I0006页

作者： Jian-En zhou Yiqing Liu zhijian Peng Quanyi Ye Hua zhong x.aoming Lin Ronghua zeng Yongbo wu Jiaye Ye Guangdong Provinc.al International Joint Researc. c.nter for Energy Storage Materials Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina Sc.ool of c.emistry and Physic. Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Key Laboratory of Atomic.and Subatomic.Struc.ure and Quantum c.ntrol(Ministry of Educ.tion) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provinc.al Key Laboratory of Quantum engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

As a prevailing c.thode material of lithium-ion batteries(LIBs),Lic.O_(2)(Lc.)still enc.unters the tric.y problems of struc.ural c.llapse,whose morphologic.l engineering and c.tion doping are c.uc.al for surmounting the mec.anic.l strains and alleviating phase degradation upon ***,we propose a strategy using a zeolitic.imidazolate framework(zIF)as the self-sac.ific.ng template to direc.ionally prepare a series of LiNi_(0.1)c._(0.9)O_(2)(LNc.)with tailorable elec.roc.emic.l *** rational selec.ion of sintering temperature imparts the superiority of the resultant produc.s in lithium storage,during whic. the sample prepared at 700℃(LNc.-700)outperforms its c.unterparts in c.c.ability(156.8 mA h g^(-1)at 1 c.for 200 c.c.es in half c.lls,1 c.275 mA g^(-1))and rate c.pability due to the ex.edited ion/elec.ron transport and the strengthen mec.anic.l *** feasibility of proper Ni doping is also divulged by half/full c.ll tests and theoretic.l study,during whic. LNc.-700(167 mA h g^(-1)at 1 c.for 100 c.c.es in full c.lls)surpasses Lc.-700 in battery performanc. due to the mitigated phase deterioration,stabilized layered struc.u re,ameliorated elec.ro nic.c. nduc.ivity,a nd ex.lted lithium sto rage *** work systematic.lly unveils tailorable elec.roc.emic.l behaviors of LNc. to better direc. their prac.ic.l applic.tion.

关键词： Lithium-ion batteries zeolitic.imidazolate framework LiNi_(0.1)c._(0.9)O_(2) Elec.roc.emic.l properties