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Vanillylacetone attenuates cadmium chloride-induced hippocampal damage and memory loss through upregulation of nuclear factor erythroid 2-related factor 2 gene and protein expression

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Neural Regeneration Research 2024年第12期19卷 2750-2759页

作者： Fahaid h.A.l-hashem Salah O.Bashir Amal F.Dawood Moutasem S.Aboonq Ismaeel Bin-Jaliah Abdulaiziz M.Al-Garni Mohamed D.Morsy Department of physiology College of MedicineKing Khalid UniversityAbhaSaudi Arabia Department of Basic Medical Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of physiology College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia Department of Medicine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

Memory loss and dementia are major public health concerns with a substantial economic *** stress has been shown to play a crucial role in the pathophysiology of hippocampal damage-induced memory *** investigate whether the antioxidant and anti-inflammatory compound vanillyla cetone(zingerone) can protect against hippocampal damage and memory loss induced by cadmium chloride(CdCl_(2)) administration in rats,we explo red the potential involvement of the nuclear factor erythroid 2-related factor 2(Nrf2) signaling pathway,which is known to modulate oxidative stress and *** healt hy male Wistar rats were divided into five groups:vehicle-treated(control),vanillylacetone,CdCl_(2),vanillylacetone+ CdCl_(2),vanillylacetone+ CdCl_(2)+ brusatol(a selective pharmacological N rf2inhibitor) *** effectively attenuated CdCl_(2)-induced damage in the dental gyrus of the hippocampus and improved the memory function assessed by the Morris Water Maze ***,vanillylacetone markedly decreased the hippocampal tissue levels of inflammatory biomarkers(interleukin-6,tumor necrosis factor-α,intracellular cell adhesive molecules) and apoptosis biomarkers(Bax and cleaved caspase-3).The control and CdCl_(2)-treated groups treated with va nillylacetone showed reduced generation of reactive oxygen species,decreased malondialdehyde levels,and increased superoxide dismutase and glutathione activities,along with significant elevation of nuclear Nrf2 mRNA and protein expression in hippocampal *** the protective effects of vanillylacetone we re substantially blocked by the co-administration of brusatol(a selective N rf2 inhibitor).Va nillylacetone mitigated hippocampal damage and memory loss induced by CdCl_(2),at least in part, by activating the nuclear transcription factor ***,vanillylacetone exerted its potent antioxidant and antiinflammatory actions.

关键词： hippocampus neuroprotective Nrf2 gene oxidative stress vanillylacetone

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有向图上的一些猜想和开放问题

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数学进展 2024年第1期53卷 1-12页

作者：艾江东 gregory GUTIN 史永堂 Ander yEO 南开大学数学科学学院核心数学与组合数学教育部重点实验室天津300371 伦敦大学皇家霍洛威学院计算机科学系英国萨里郡TW200EX 南开大学组合数学中心核心数学与组合数学教育部重点实验室天津300371 南丹麦大学数学与计算机科学系丹麦欧登塞M区DK-5230 约翰内斯堡大学数学与应用数学系南非约翰内斯堡2006

讨论了有向图上的几个猜想和开放问题.一些尚未解决的问题是新的.

关键词：有向图出度圈路分划最大有向割集拟核 Seymour二次邻域猜想无圈2-染色

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Canonical and noncanonical Wnt signaling: Multilayered mediators, signaling mechanisms and major signaling crosstalk

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Genes & Diseases 2024年第1期11卷 103-134页

作者： Kevin Qin Michael yu Jiaming Fan hongwei Wang piao Zhao Guozhi Zhaoo Wei Zeng Connie Chen yonghui Wang Annie Wang Zander Schwartz Jeffrey hong lily Song William Wagstaff Rex C.haydon hue h.luu Sherwin h.ho Jason Strelzow Russell R.Reid Tong-Chuan he lewis l.Shi Chicago Medical School Rosalind Franklin University of Medicine and ScienceNorth ChicagoIL 60064USA Molecular Oncology laboratory Department of Orthopaedic Surgery and Rehabilitation MedicineThe University of Chicago Medical CenterChicagoIL 60637USA Ministry of Education Key laboratory of Diagnostic Medicine and Department of Clinical BiochemistryThe School of Laboratory MedicineChongqing Medical UniversityChongqing 400016China Departments of Orthopaedic Surgery and Urology The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Interventional Neurology The First Dongguan Affiliated HospitalGuangdong Medical UniversityDongguanGuangdong 523475China Department of Clinical laboratory Medicine Shanghai Jiaotong University School of MedicineShanghai 200000China School of Biomedical Engineering Vanderbilt UniversityNashvilleTN 37235USA laboratory of Craniofacial Biology and Development Department of Surgery Section of Plastic SurgeryThe University of Chicago Medical CenterChicagoIL 60637USA

Wnt signaling plays a major role in regulating cell proliferation and *** Wnt ligands are a family of 19 secreted glycoproteins that mediate their signaling effects via binding to Frizzled receptors and lRp5/6 coreceptors and transducing the signal either throughβ-catenin in the canonical pathway or through a series of other proteins in the nonca-nonical *** of the individual components of both canonical and noncanonical Wnt signaling have additional functions throughout the body,establishing the complex interplay between Wnt signaling and other signaling *** crosstalk between Wnt signaling and other pathways gives Wnt signaling a vital role in many cellular and organ ***-regulation of this system has been implicated in many diseases affecting a wide array of organ systems,including cancer and embryological defects,and can even cause embryonic *** complexity of this system and its interacting proteins have made Wnt signaling a target for many therapeutic ***,both stimulatory and inhibitory treatments come with potential risks that need to be *** review synthesized much of the current knowl-edge on the Wnt signaling pathway,beginning with the history of Wnt *** thoroughly described the different variants of Wnt signaling,including canonical,noncanonical Wnt/pCp,and the noncanonical Wnt/Ca2+*** description involved each of its components and their involvement in other cellular ***,this review explained the various other pathways and processes that crosstalk with Wnt signaling.

关键词： β-catenin Canonical Wnt Noncanonical Wnt Signal transduction Signaling crosstalk

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parkland trees on smallholder farms ameliorate soil physical-chemical properties in the semi-arid area of Tigray,Ethiopia

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Journal of Arid land 2024年第1期16卷 1-13页

作者： Selam lJAlEM Emiru BIRhANE Kassa TEKA Daniel h BERhE Department of land Resources Management and Environmental protection College of Dryland Agriculture and Natural ResourcesMekelle UniversityMekelle 231Ethiopia Institute of Climate and Society Mekelle UniversityMekelle 231Ethiopia Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life Sciences(NMBU)Ås 1432Norway Department of Natural Resources Management Adigrat UniversityAdigrat 50Ethiopia

proposed agroforestry options should begin with the species that farmers are most familiar with,which would be the native multipurpose trees that have evolved under smallholder farms and socioeconomic *** African birch(Anogeissus leiocarpa(DC.)Guill.&perr.)and pink jacaranda(Stereospermum kunthianum Cham.)trees are the dominant species in the agroforestry parkland system in the drylands of Tigray,*** farmers highly value these trees for their multifunctional uses including timber,firewood,charcoal,medicine,*** trees also could improve soil ***,the amount of soil physical and chemical properties enhanced by the two species must be determined to maintain the sustainable conservation of the species in the parklands and to scale up to similar agroecological ***,we selected twelve isolated trees,six from each species that had similar dendrometric characteristics and were growing in similar environmental *** divided the canopy cover of each tree into three radial distances:mid-canopy,canopy edge,and canopy gap(control).At each distance,we took soil samples from three different *** collected 216 soil samples(half disturbed and the other half undisturbed)from each canopy position and soil *** density(BD),soil moisture content(SMC),soil organic carbon(SOC),total nitrogen(TN),available phosphorus(Ap),available potassium(AK),p h,electrical conductivity(EC),and cation exchange capacity(CEC)were *** revealed that soil physical and chemical properties significantly improved except for soil texture and EC under both species,CEC under ***,and soil p h under ***,all the studied soils were improved under both species canopy as compared with canopy ***,TN,Ap,and AK under canopy of these trees were respectively 24.1%,11.1%,55.0%,and 9.3% higher than those soils under *** two parkland agroforestry species significantly enhanced soil fertility near the canopy of top

关键词： agroforestry bulk density carbon stock dispersed tree soil texture tree canopy

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Oral anti-coagulants use in Chinese hospitalized patients with atrial fibrillation

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Chinese Medical Journal 2024年第2期137卷 172-180页

作者： Jing lin Deyong long Chenxi Jiang Caihua Sang Ribo Tang Songnan li Wei Wang Xueyuan Guo Man Ning Zhaoqing Sun Na yang yongchen hao Jun liu Jing liu Xin Du louise Morgan Gregg C.Fonarow Sidney C.Smith Jr gregory.y.h.l.p Dong Zhao Jianzeng Dong Changsheng Ma On behalf of CCC-AF investigators Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China National Clinical Research Center for Cardiovascular Diseases Beijing 100029 China Department of Epidemiology Beijing Anzhen HospitalCapital Medical UniversityBeijing Institute of HeartLung and Blood Vessel DiseasesBeijing 100029China International Quality Improvement Department American Heart AssociationDallasTX 07076USA Division of Cardiology Geffen School of Medicine at University of CaliforniaLos Angeles CA 90024USA Division of Cardiology University of North CarolinaChapel HillNC 27599USA Department of Cardiology Liverpool Centre for Cardiovascular ScienceUniversity of Liverpool and Liverpool Heart&Chest HospitalLiverpool L143PEUK Department of Clinical Medicine Aalborg UniversityAalborg 9000Denmark 不详

Background:Oral anti-coagulants(OAC)are the intervention for the prevention of stroke,which consistently improve clinical outcomes and survival among patients with atrial fibrillation(AF).The main purpose of this study is to identify problems in OAC utilization among hospitalized patients with AF in ***:Using data from the Improving Care for Cardiovascular Disease in China-Atrial Fibrillation(CCC-AF)registry,guideline-recommended OAC use in eligible patients was ***:A total of 52,530 patients with non-valvular AF were enrolled from February 2015 to December 2019,of whom 38,203 were at a high risk of stroke,9717 were at a moderate risk,and 4610 were at a low *** admission,only 20.0%(6075/30,420)of patients with a diagnosed AF and a high risk of stroke were taking *** use of pre-hospital OAC on admission was associated with a lower risk of new-onset ischemic stroke/transient ischemic attack among the diagnosed AF population(adjusted odds ratio:0.54,95%confidence interval:0.43-0.68;pharge,the prescription rate of OAC was 45.2%(16,757/37,087)in eligible patients with high stroke risk and 60.7%(2778/4578)in eligible patients with low stroke *** utilization in patients with high stroke risk on admission or at discharge both increased largely over time(all pltivariate analysis showed that OAC utilization at discharge was positively associated with in-hospital rhythm control strategies,including catheter ablation(adjusted odds ratio[OR]11.63,95%confidence interval[CI]10.04-13.47;plectronic cardioversion(adjusted OR 2.41,95%CI 1.65-3.51;phythmic drug use(adjusted OR 1.45,95%CI 1.38-1.53;plusions:In hospitals participated in the CCC-AF project,>70%of AF patients were at a high risk of *** poor performance on guideline-recommended OAC use was found in this study,over time the CCC-AF project has made progress in stroke prevention in the Chinese AF ***

关键词： Atrial fibrillation Oral anti-coagulants OAC Stroke prevention Contraindication

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高温压缩变形Al-Zn-Mg-Cu合金动态再结晶后的{111}/{111}近奇异晶界

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金属学报 2024年第9期60卷 1165-1178页

作者：刘光辉王卫国 gregory S Rohrer 陈松林燕童芳冯小铮周邦新福建理工大学晶界工程研究所福州350118 福建理工大学材料科学与工程学院福州350118 Department of Materials Science and Engineering Carnegie Mellon UniversityPittsburghPA15213-3890USA 上海大学材料研究所上海200072

提高{111}/{111}近奇异晶界比例可增强Al-Zn-Mg-Cu合金晶界腐蚀抗力,为了解此类晶界形成机理并探索其调控方法,本工作将470℃、12 h和520℃、6 h双级固溶及冷轧后再结晶的Al-Zn-Mg-Cu合金样品分别在450、480和520℃进行应变速率为0.001 ... 详细信息

提高{111}/{111}近奇异晶界比例可增强Al-Zn-Mg-Cu合金晶界腐蚀抗力,为了解此类晶界形成机理并探索其调控方法,本工作将470℃、12 h和520℃、6 h双级固溶及冷轧后再结晶的Al-Zn-Mg-Cu合金样品分别在450、480和520℃进行应变速率为0.001 s^(-1)、真应变为1.20的压缩变形,压缩后立即水冷。采用电子背散射衍射和基于五参数分析的晶界界面匹配定量表征方法对上述3个样品的显微组织和晶界特征分布进行观察分析。结果表明,高温压缩后的显微组织不均匀,存在间隔分明的细晶组织和粗晶组织,其中细晶组织中的晶界以小角度晶界(lAGB)为主,粗晶组织中的晶界以大角度晶界(hAGB)为主;粗、细晶组织中的{111}/{111}近奇异晶界({111}/{111}-NSB)比例均随压缩温度的升高而增大,其中经520℃压缩的试样,其lAGB中的{111}/{111}-NSB占总晶界的比例为8.77%,hAGB中的{111}/{111}-NSB占总晶界的比例为4.53%。进一步考察各试样的应力-应变曲线以及450℃压缩30%时的显微组织特征可见,应变介于0.05~0.70为稳态流变阶段,主要发生初次动态再结晶(DRX),其主要由粗晶及其hAGB构成。应变介于0.70~1.20为二次硬化阶段,主要发生二次DRX,其中不连续DRX(DDRX)和连续DRX(CDRX)同时进行,且优先发生在某些微区;不论是DDRX因形核和核心长大生成的hAGB,还是CDRX因亚晶合并引入的lAGB,均使对应微区的晶粒细化,导致样品总体流变应力急剧上升。二次DRX阶段,CDRX行为随压缩温度的提高而增强,{111}/{111}-NSB比例也随之增加,特别是lAGB中的{111}/{111}-NSB比例快速增加。

关键词： Al-Zn-Mg-Cu合金近奇异晶界晶界界面匹配连续动态再结晶

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protective effects of cyclosporine and its analog NIM-811 in a murine model of hepatic ischemia-reperfusion injury

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liver Research 2024年第1期8卷 46-53页

作者： Joshua hefler Rena pawlick Braulio A.Marfil-Garza Aducio Thiesen Nerea Cuesta-Gomez Sanaz hatami Darren h.Freed Constantine Karvellas David l.Bigam A.M.James Shapiro Department of Surgery Faculty of Medicine&DentistryUniversity of AlbertaEdmontonABCanada Department of Medicine Faculty of Medicine&DentistryUniversity of AlbertaEdmontonABCanada ChRISTUS-latAm hub Excellence&Innovation Center MonterreyMexico Alberta Diabetes Institute University of AlbertaEdmontonABCanada Clinical Islet Transplant program University of AlbertaEdmontonABCanada Department of laboratory Medicine&pathology Faculty of Medicine&DentistryUniversity of AlbertaEdmontonABCanada

Background and aim:The liver is susceptible to ischemia-reperfusion injury(IRI)during hepatic surgery,when the vessels are compressed to control bleeding,or liver transplantation,when there is an obligate period of *** hallmark of IRI comprises mitochondrial dysfunction,which generates reactive oxygen species,and cell death through necrosis or ***(CsA),which is a well-known immunosuppressive agent that inhibits calcineurin,has the additional effect of inhibiting the mito-chondrial permeability transition pore(mpTp),thereby,preventing mitochondrial swelling and ***-811,which is the nonimmunosuppressive analog of CsA,has a similar effect on the *** this study,we tested the effect of both agents on mitigating warm hepatic IRI in a murine *** and methods:Before ischemic insult,the mice were administered with intraperitoneal normal saline(control);CsA at 2.5,10,or 25 mg/kg;or NIM-811 at 10 mg/***,the mice were subjected to partial warm hepatic ischemia by selective pedicle clamping for 60 min,followed by 6 h of recovery after *** alanine transaminase(AlT)was measured,and the liver tissue was examined histologically for the presence of apoptosis and the levels of inflammatory ***:Compared with the control mice,the mice treated with 10 and 25 mg/kg of CsA and NIM-811 had significantly lower AlT levels(ppectively).Moreover,the liver tissue showed reduced histological injury scores after treatment with CsA at 2.5,10,and 25 mg/kg and NIM-811(p=0.041,pectively)and significant decrease in apoptosis after treatment with CsA at all doses(p=0.012,0.007,andpectively).levels of the pro-inflammatory cyto-kines,particularly interleukin(Il)-1β,Il-2,Il-4,Il-10,and keratinocyte chemoattractant/human growth-regulated oncogene significantly decreased in the mice treated with the highest dose of CsA(25 mg/kg)than those in the control ***

关键词： Cyclosporine(CsA) Cyclosporine analogue liver surgery Ischemia-reperfusion injury(IRI) Animal model NIM-811

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轧制变形及再结晶00Cr12铁素体不锈钢中的{011}/{011}近奇异晶界

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中国科学：技术科学 2024年第3期54卷 459-476页

作者：黄新宇王卫国 ROhRER gregory S 徐刚陈松冯小铮张厚安陈文哲周邦新福建理工大学晶界工程研究所福州350118 福建理工大学材料科学与工程学院福州350118 Department of Materials Science and Engineering Carnegie Mellon UniversityPittsburgh 15213-3890USA 厦门理工学院材料科学与工程学院厦门361024 上海大学材料研究所上海200072

不同于低层错能面心立方结构的奥氏体不锈钢,高层错能体心立方结构的铁素体不锈钢在形变及再结晶等组织重构过程中很难形成结构稳定且十分耐蚀的奇异晶界(共格孪晶界).研究{011}/{011}近奇异晶界的影响因素和形成机理,将有可能为改善铁... 详细信息

不同于低层错能面心立方结构的奥氏体不锈钢,高层错能体心立方结构的铁素体不锈钢在形变及再结晶等组织重构过程中很难形成结构稳定且十分耐蚀的奇异晶界(共格孪晶界).研究{011}/{011}近奇异晶界的影响因素和形成机理,将有可能为改善铁素体不锈钢,特别是低Cr铁素体不锈钢晶间腐蚀性能提供晶界工程新思路.本文选用经固溶处理和组织均匀化处理的00Cr12低Cr铁素体不锈钢为实验材料,5个平行试样分别在350℃,500℃,580℃,650℃和690℃进行厚度减缩量为70%的单向轧制变形后,立即进行750℃、2 h再结晶退火处理.使用基于电子背散射衍射和五参数分析的晶界界面匹配表征方法对上述样品进行测试和分析发现,轧制温度对00Cr12铁素体不锈钢再结晶{011}/{011}近奇异晶界比例有显著影响,再结晶后的{011}/{011}近奇异晶界比例随再结晶退火前轧制温度的升高先上升再下降,其中经650℃轧制的样品,其再结晶后{011}/{011}近奇异晶界比例达到极大值6.82%.取向分布函数(ODF)和重叠极图晶界迹线分析表明,经650℃轧制的样品,其再结晶组织中形成了强的{011}织构;具有{011}及其漫散取向的晶粒之间较多地存在/θ取向差关系(θ为绕的旋转角),其关联晶界为{011}/{011}近奇异晶界,这是经650℃轧制的样品,其再结晶后{011}/{011}近奇异晶界比例达到极大值的原因.离线原位表面侵蚀实验表明,{011}/{011}近奇异晶界的腐蚀抗力显著高于一般晶界.因此,基于本文研究结果,进一步调控并提高{011}/{011}近奇异晶界的比例将有助于从根本上显著改善00Cr12铁素体不锈钢晶间腐蚀性能.

关键词： 00Cr12铁素体不锈钢近奇异晶界晶界界面匹配晶间腐蚀

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智能供水管网的内联闭式水力发电系统的研发

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中国给水排水 2024年第6期40卷 97-102页

作者：杨洪兴沈志成姚尧曹炳豪谢景耀李立楚香港理工大学建筑环境及能源工程学系中国香港香港特别行政区政府水务署中国香港

为更好地监测管道泄漏和控制水压,智能供水管网管理系统(简称“智管网”)正逐步应用于城市供水管网。传统的供水监测仪表和传感器多采用蓄电池供电,由于电池寿命与容量有限,使得在实时监测模式下需要经常更换电池,造成经济与人力的耗费... 详细信息

为更好地监测管道泄漏和控制水压,智能供水管网管理系统(简称“智管网”)正逐步应用于城市供水管网。传统的供水监测仪表和传感器多采用蓄电池供电,由于电池寿命与容量有限,使得在实时监测模式下需要经常更换电池,造成经济与人力的耗费。通过数值模拟研究和实验研发了一种结构简单、安装方便的内联闭式水力发电系统,消耗有限的水头便可为“智管网”感应和监测设备及数据传输装置提供可靠的电力,通过提高站点之间的通信频次来保障实时监控,同时避免频繁地更换电池。此外,该管道水轮机通过管道内的喇叭口与挡块设计来实现双向流发电。介绍了该系统的工作设计原理和仿真实验研究结果,以及实测的内联闭式水力发电运行数据。实验结果表明,该系统能够可靠地运行,可为下一步的研发提供宝贵的理论和应用基础。

关键词：智能供水管网蓄电池内联闭式水力发电双向流发电

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Artificial ground freezing of underground mines in cold regions using thermosyphons with air insulation

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International Journal of Mining Science and Technology 2024年第5期34卷 643-654页

作者： Ahmad F.Zueter Mohammad Zolfagharroshan Navid Bahrani Agus p.Sasmito Department of Civil and Resource Engineering Dalhousie UniversityHalifax B3H4R2Canada Department of Mining Engineering McGill UniversityMontreal H3A0E8Canada

Current practice of underground artificial ground freezing(AGF)typically involves huge refrigeration systems of large economic and environmental *** this study,a novel AGF technique is proposed deploying available cold wind in cold *** is achieved by a static heat transfer device called thermosyphon equipped with an air insulation layer.A refrigeration unit can be optionally integrated to meet additional cooling *** introduction of air insulation isolates the thermosyphon from ground zones where freezing is not needed,resulting in:(1)steering the cooling resources(cold wind or refrigeration)towards zones of interest;and(2)minimizing refrigeration *** design is demonstrated using well-validated mathematical models from our previous work based on two-phase enthalpy method of the ground coupled with a thermal resistance network for the *** Canadian mines are considered:the Cigar lake Mine and the Giant *** results show that our proposed design can speed the freezing time by 30%at the Giant Mine and by two months at the Cigar lake ***,a cooling load of 2.4 GWh can be saved at the Cigar lake ***,this study provides mining practitioners with sustainable solutions of underground AGF.

关键词： Artificial ground freezing Underground mining Sustainable mining Thermosyphon Air insulation Cold regions

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