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Interaction of Ca^(2+)and Fe^(3+)in co-precipitation process induced by Virgibacillus dokdonensis and its application

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Journal of Environmental Sciences 2025年第1期147卷 131-152页

作者： Huaxiao yan Yuping Liu Haojuan Zhang Shengping Jin Zuozhen Han Jusun Woo Maurice E.Tucker Long Meng Xiangqun Chi Chao Han yanyang zhao Yueming zhao Hui zhao College of Chemical and Biological Engineering College of Earth Science and EngineeringShandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary MineralsShandong University of Science and TechnologyQingdao 266590China Laboratory for Marine Mineral Resources Center for Isotope Geochemistry and GeochronologyQingdao National Laboratory for Marine Science and TechnologyQingdao 266237China School of Earth and Environmental Sciences Seoul National UniversitySeoul 08826Korea School of Earth Sciences University of BristolBristol BS81RJUK Cabot Institute University of BristolCantock’s CloseBristol BS81UJUK Qingdao West Coast New District First High School Qingdao 266555China

Biomineralization has garnered significant attention in the field of wastewater treatment due to its notable cost reduction compared to conventional *** reinjection water from oilfields containing an exceedingly high concentration of calcium and ferric ions will pose amajor hazard in ***,the utilization of biomineralization for precipitating these ions has been scarcely investigated due to limited tolerance among halophiles towards such extreme *** this study,free and immobilized halophiles Virgibacillus dokdonensis were used to precipitate these ions and the effects were compared,at the same time,biomineralizationmechanisms and mineral characteristicswere further *** results showthat bacterial concentration and carbonic anhydrase activitywere higher when additionally adding ferric ion based on calcium ion;the content of protein,polysaccharides,deoxyribonucleic acid and humic substances in the extracellular polymers also increased compared to *** ions were biomineralized into calcite and vaterite with mul-tiple *** to iron doping,the crystallinity and thermal stability of calcium carbonate decreased,the content of O-C=O,N-C=OandC-O-PO_(3) increased,the stable carbon isotope values became much more negative,andβ-sheet in minerals *** calcium concentrations facilitated ferric ion precipitation,while ferric ions hindered calcium *** immobilized bacteria performed better in ferric ion removal,with a precipitation ratio exceeding 90%.Free bacteria performed better in calcium removal,and the precipitation ratio reached a maximum of 56%.This research maybe provides some reference for the co-removal of calcium and ferric ions from the oilfield wastewater.

关键词： Calcium carbonate Calcium ion Ferric ion Biomineralization Co-removal Immobilization

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Study of spatiotemporal variation and annual emission of CH_(4)in Shaoxing yangtze River Delta,China,Using a portable CH4 detector on the UAV

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Journal of Environmental Sciences 2025年第5期151卷 140-149页

作者： Xiaobing Pang Qianqian Shang Lang Chen Songhua Sun Gaosheng zhao Zhentao Wu Canming zhao Youhao Lu Qianqian Sun yan Lyu Baozhen Wang College of Environment Zhejiang University of TechnologyHangzhou 310000China Shaoxing Institute of Zhejiang University of Technology Shaoxing 312000China Shaoxing Ecological and Environmental Monitoring Center of Zhejiang Province Shaoxing 312000China School of Environmental and Chemical Engineering Shanghai UniversityShanghai 200444China Green Intelligence Environmental School Yangtze Normal UniversityChongqing 408100China

Methane(CH_(4))is the second greenhouse gas and has a profound impact on global climate change due to its high global warming potential and *** 2022,the CH_(4)concentration was approximately 1.9 ppm,which was 264%of the pre-industrial *** spatiotemporal distribution of CH_(4)was investigated by a portable CH_(4)detector on an unmanned aerial vehicle and electric bicycles in Shaoxing,a city situated in the yangtze River Delta,*** vertical distribution revealed CH_(4)concentration generally decreased slowly with ***,the inversion condition and low atmospheric boundary layer height(ABLH)leaded to the enhancement of CH_(4)with *** highest CH_(4)concentration(2.2±0.1 ppm,n=1428)was observed in winter and the lowest(2.0±0.2 ppm,n=1530)in *** the daily variation,CH_(4)concentration peaked at 5:00 local time(LT)and reached its lowest level at 14:00 LT,which was attributed to the daily variation of ABLH,lowest in the early morning and highest in the *** urban areas,CH_(4)concentrations showed higher levels near restaurants,natural gas stations and sewerage well,with a maximum value of 13.1 ppm,which was caused by CH_(4)emission and natural gas leakage from these *** annual CH_(4)emission in Shaoxing were estimated to be approximately 69 ton/(km^(2)·year)by the mass balance *** with other cities in the world,the CH_(4)emission is in higher level which imply some control measures should be conducted to reduce CH_(4)emission in Shaoxing.

关键词： Portable CH_(4)detector Spatiotemporal variation Annual CH_(4)emission Unmanned aerial vehicle

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Comparisons of{100}texture improvement and formability in hot-rolled non-oriented electrical steel by austenite-ferrite phase transformation and shear deformation

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Journal of Iron and Steel Research International 2025年第1期32卷 171-185页

作者： Chi-hao Yu Hong-jiang Pan yan-ping zhao De-ting Tang Hai-jun Wang Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming650093YunnanChina School of Electronics and Information Engineering Anshun UniversityAnshun561000GuizhouChina School of Metallurgical Engineering Anhui University of TechnologyMa’anshan243032AnhuiChina

Over the years,the high magnetic induction of industrial Mn-added electrical steel is assumed to be the enhancement of{100}texture derived from its austenite-ferrite phase transformation during hot rolling(phase transformation(PT)method).However,it is still undetermined without straightforward experimental *** reason for{100}texture improvement of Mn-added electrical steel is experimentally confirmed due to the recrystallization induced by the austenite-ferrite phase transformation during hot ***,a more promising methodology to further improve{100}texture and formability of hot-rolled electrical steel is promoted by the control of hot rolling deformation condition(shear deformation(SD)method).The results show that the nucleation mechanisms of{100}oriented recrystallized grains are different in the samples by SD and PT methods,which are in-depth shear deformation and austenite-ferrite phase transformation,*** this case,coarse{100}oriented recrystallized grains and low residual stress are obtained in the sample by SD method,which is responsible for its superior{100}texture and *** contrast,the sample by PT method forms fine recrystallized grains with random orientations and accumulates severe residual stress.

关键词： Non-oriented electrical steel {100}texture Formability Austenite-ferrite phase transformation Shear deformation

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One Novel Nortriterpenoid from the Mastic(Pistacia lentiscus)and Its Anti-Inflammatory Activity

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Phyton-International Journal of Experimental Botany 2025年第1期94卷 199-207页

作者： yan Wu Xuerui An Haofan Lv Zhiqiang zhao Wei Liu Chunpeng Wan Key Lab of Natural Product Chemistry and Application at Universities of Education Department of Xinjiang Uygur Autonomous Region School of Chemistry and Chemical EngineeringYili Normal UniversityYining835000China Xinjiang Key Laboratory of Clean Conversion and High Value Utilization of Biomass Resources School of Chemistry and Chemical EngineeringYili Normal UniversityYining835000China Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables College of AgronomyJiangxi Agricultural UniversityNanchang330045China

A novel pair of oleanane nor-triterpenes,with compound 1 featuring a unique 18α-H structure,was isolated from mastic,and this compound represents a noteworthy new entity not previously reported in the *** absolute configurations of their structures were further determined using a combination of different analytical methods such as NMR,high-resolution mass spectrometry(HR-MS),ultraviolet(UV),infrared(IR)and single-crystal X-ray diffraction(SXRD).The compound actively mitigated inflammations by efficiently quenching nitric oxide(NO)synthesis within an ex vivo system using lipopolysaccharide activated murine macrophage RAW264.7 ***,compound 1 exhibit a better IC50 concentration of 11.69±1.39µM,surpassing the efficacy of the positive control dexamethasone,which exhibited an IC50 of 23.21±1.17μ*** compound 2 also demonstrated inhibitory activity,its potency was comparatively weaker,with an IC50 of 26.18±2.66μM.

关键词： Mastic nor-triterpene 18α-H oleanane anti-inflammatory

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Advances in layer-by-layer self-assembled coatings upon biodegradable magnesium alloys

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Science China Materials 2021年第9期64卷 2093-2106页

作者： Li-Jun He yang Shao Shuo-Qi Li Lan-Yue Cui Xiao-Jing Ji yan-bin zhao Rong-Chang Zeng Corrosion Laboratory for Light Metals College of Materials Science and EngineeringShandong University of Science and TechnologyQingdao266590China

Magnesium(Mg)and its alloys are considered as ideal biodegradable materials due to their excellent mechanical properties and *** order to improve the surface properties to allow better adaptation to the surrounding tissue of the body,surface modification has played a significant role in satisfying multiple clinical requirements such as corrosion resistance,biocompatibility,and antibacterial ***,layer-by-layer(LbL)self-assembly,which can be applied for biodegradable Mg alloys due to its extensive choice of usable units,holds great promise among all the surface *** this review,the mechanisms of the driving force(i.e.,electrostatic interaction,hydrogen bonding,charge transfer interaction and covalent bonding),cuttingedge advances in preparation methods(e.g.,dipping,spraying,and spinning)and the functional properties(corrosion resistance,antibacterial activity,and biocompatibility)that could be achieved by the LbL coatings are summarized.A reasonable trend of the potential development of LbL for bioMg alloys is also proposed at the end of this article.

关键词： layer-by-layer assembly coating magnesium alloys corrosion resistance biocompatibility antibacterial ability

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Prevalence,risk factors and clinical features of sensory A-V pattern exotropia

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International Journal of Ophthalmology(English edition) 2025年第2期18卷 323-329页

作者： bin-bin Zhu Shi-Yu Tang Xiang-Jun Wang Li-Cheng Fu Jian-Hua yan State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-Sen UniversityGuangzhou 510060Guangdong ProvinceChina Ophthalmology Department of Surgerythe Second People’s Hospital of FoshanFoshan 528000Guangdong ProvinceChina

AIM:To investigate the potential mechanisms of A-V pattern and evaluate the surgical outcomes used in the treatment of sensory ***:The medical records of patients with sensory A-V pattern exotropia who underwent strabismus surgery between May 2014 to June 2019 was retrospectively *** control group included sensory exotropia patients without A-V pattern and concomitant A-V pattern exotropia patients with normal vision who undergone strabismus surgery over this same time *** alignment,best corrected visual acuity,oblique muscle function,and stereopsis records were ***:Among the 843 eligible patients,91(10.79%;39 males and 52 females)had A-pattern(54,6.4%)or V-pattern(37,4.4%).Age at onset of vision impairment was 4±5y and at the time of surgery was 25±*** significant negative correlations were present between impaired visual acuity and the pre-operative exodeviation(r=-0.198,P=0.016)and patterns(r=-0.207,P=0.015).Age at surgery and exodeviation in patients with concomitant A-V pattern exotropia was significantly earlier as compared with that of sensory A-V pattern exotropia and sensory exotropia(both P<0.0001).There were no significant differences in these clinical variables between sensory exotropia with or without A-V *** and pattern were significantly reduced in patients receiving horizontal rectus surgery with or without oblique muscle surgery(both P<0.0001).CONCLUSION:The prevalence of sensory A-V pattern exotropia in our study is 10.79%.Visual acuity represents an important factor contributing to the occurrence and development of A-V *** horizontal rectus surgery can provide a good option for the correction of sensory A-V pattern exotropia.

关键词： sensory exotropia A-V pattern oblique muscle dysfunction horizontal rectus surgery

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松辽盆地东北部铀矿含矿目的层泉头组物质来源及其构造背景分析——来自岩石学和地球化学的证据

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科学技术与工程 2020年第30期20卷 12324-12331页

作者：李研聂逢君严兆彬东华理工大学地球科学学院南昌330013 核工业240研究所沈阳110000

对于松辽盆地东北部地浸砂岩型铀矿找矿工作而言,赋铀砂体的物源是其关键,泉头组是重要的含矿目的层之一,明确其岩石学和地球化学特征,对于松辽盆地北部找矿具有十分重要的意义,通过对松辽盆地东北部10件砂岩样品进行岩石学研究、稀土... 详细信息

对于松辽盆地东北部地浸砂岩型铀矿找矿工作而言,赋铀砂体的物源是其关键,泉头组是重要的含矿目的层之一,明确其岩石学和地球化学特征,对于松辽盆地北部找矿具有十分重要的意义,通过对松辽盆地东北部10件砂岩样品进行岩石学研究、稀土元素、微量元素的分析测试工作,可知泉头组碎屑岩主要以长石岩屑砂岩为主,其碎屑岩成分成熟度和结构成熟度均较低,具有近物源沉积的特征,岩石稀土总量不高(ΣREE=84.85×10^-6~140.12×10^-6),轻稀土分馏系数(La/Sm)N=3.57~4.12,重稀土分馏系数(Gd/Yb)N=2.13~2.67,Eu为中等负异常(δEu=0.57~0.96),微量元素以富集LREE、Rb、Th、U、K,强烈亏损Sr、P、Ti为特征,具有壳源特征,且在源区和构造判别图解上分别落入长英质源区及活动大陆边缘区域内,显示泉头组物源主要来源于上地壳长英质岩石,其母岩的沉积环境是与活动大陆边缘相关的沉积盆地。

关键词：泉头组岩石学地球化学松辽盆地东北部

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Introducing strong metal–oxygen bonds to suppress the Jahn-Teller effect and enhance the structural stability of Ni/Co-free Mn-based layered oxide cathodes for potassium-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 713-722页

作者： Yicheng Lin Shaohua Luo Pengyu Li Jun Cong Wei zhao Lixiong Qian Qi Sun Shengxue yan School of Materials Science and Engineering Northeastern University School of Resources and Materials Northeastern University at Qinhuangdao Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province

Mn-based layered oxides（KMO） have emerged as one of the promising low-cost cathodes for potassiumion batteries（PIBs）.However,due to the multiple-phase transitions and the distortion in the MnO6structure induced by the Jahn-Teller（JT） effect associated with Mn-ion,the cathode exhibits poor structural ***,we propose a strategy to enhance structural stability by introducing robust metal-oxygen（M-O） bonds,which can realize the pinning effect to constrain the distortion in the transition metal（TM） ***,all the elements employed have exceptionally high crustal *** a proof of concept,the designed K0.5Mn0.9Mg0.025Ti0.025Al0.05O2cathode exhibited a discharge capacity of approximately 100 mA h g-1at 20 mA g-1with 79% capacity retention over 50 cycles,and 73% capacity retention over 200 cycles at 200 mA g-1,showcased much better battery performance than the designed cathode with less robust M-O *** properties of the formed M-O bonds were investigated using theoretical *** enhanced dynamics,mitigated JT effect,and improved structural stability were elucidated through the in-situ X-ray diffractometer（XRD）,in-situ electrochemical impedance spectroscopy（EIS）(and distribution of relaxation times（DRT） method),and ex-situ X-ray absorption fine structure（XAFS） *** study holds substantial reference value for the future design of costeffective Mn-based layered cathodes for PIBs.

关键词： Jahn-Teller effect Layered oxide cathodes Low-cost Potassium-ion batteries Robust M–O bonds

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Carbon Dots-Modified Hollow Mesoporous Photonic Crystal Materials for Sensitivityand Selectivity-Enhanced Sensing of Chloroform Vapor

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Nano-Micro Letters 2025年第4期17卷 381-398页

作者： Junchen Liu Ji Liu Zhipeng Li Liupeng zhao Tianshuang Wang Xu yan Fangmeng Liu Xiaomin Li Qin Li Peng Sun Geyu Lu Dongyuan zhao State Laboratory On Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department of Chemistry and Laboratory of Advanced Materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersCollaborative Innovation Center of Chemistry for Energy Materials(2011-iChEM)College of Chemistry and MaterialsFudan UniversityShanghaiPeople’s Republic of China School of Engineering and Built Environment Griffith UniversityNathanQLD 4111Australia

Chloroform and other volatile organic pollutants have garnered widespread attention from the public and researchers,because of their potential harm to the respiratory system,nervous system,skin,and ***,research on chloroform vapor sensing is still in its early stages,primarily due to the lack of specific recognition *** we report a mesoporous photonic crystal sensor incorporating carbon dots-based nanoreceptor(HMSS@CDs-PCs)for enhanced chloroform *** colloidal PC packed with hollow mesoporous silica spheres provides an interconnected ordered macro-meso-hierarchical porous structure,ideal for rapid gas sensing utilizing the photonic bandgap shift as the readout *** as-synthesized CDs with pyridinic-N-oxide functional groups adsorbed in the hollow mesoporous silica spheres are found to not only serve as the chloroform adsorption sites,but also a molecular glue that prevents crack formation in the colloidal *** sensitivity of HMSS@CDs-PCs sensor is 0.79 nm ppm^(-1)and an impressively low limit of detection is 3.22 ppm,which are the best reported values in fast-response chloroform vapor sensor without multi-signal *** positive response time is 7.5 s and the negative response time 9 ***,relatively stable sensing can be maintained within a relative humidity of 20%-85%RH and temperature of 25-55℃.This study demonstrates that HMSS@CDs-PCs sensors have practical application potential in indoor and outdoor chloroform vapor detection.

关键词： Carbon dots Photonic crystal sensors Sensitivity-enhanced sensing Selectivity-enhanced sensing Chloroform vapor sensing

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Metal nanoparticles decorated CoFe-(oxy)hydroxysulfides nanosheets fabricated by a general strategy for electrocatalytic water splitting

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Journal of Energy Chemistry 2025年第1期100卷 26-38页

作者： Xiaodong yang Haochen Shen Xiaoming Xiao Zhichao Li Qi Zhou Wei yang bin Jiang Yongli Sun Luhong Zhang Zhenhua yan School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

This study presents a novel method to fabricate metal-decorated,sulfur-doped layered double hydroxides(M/SLDH)through spontaneous redox and sulfurization *** developed Ag/SLDH and Pt/SLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)performance,achieving low overpotentials of 212 and 35 mV at 10 mA cm^(-2)in 1 M KOH,*** both anode and cathode in water splitting,they required only 1.47 V to reach 10 mA cm^(-2)and exhibited high structural robustness,maintaining stability at 1000 mA cm^(-2)for 300 ***-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and S doping significantly promote the transformation into the S-Co1-xFexOOH layer,which serves as the active phase for water ***,ultraviolet photoelectron spectroscopy(UPS)and density functional theory(DFT)analyses indicated that incorporating metal nanoparticles and S doping increase electron density near the Fermi level and reduce reaction energy barriers,thus enhancing intrinsic OER and HER *** study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting,with promising potential for broader applications.

关键词： LDH Spontaneous reaction Metal nanoparticles Water splitting

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