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Geochronology,Geochemistry,and Sr-Nd-Hf Isotopes of the Diorite Porphyrites from the Weining Beishan Area,Ningxia Hui Autonomous Region:Constraints on Their Source and Tectonic Implications

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Journal of Earth Science 2024年第2期35卷 462-475页

作者： Anlu Liu Lianfu Hai Jinke Liu Xiaojun Zhang Haifeng Li Fengshun Zhao Guoliang Zhao jinhe bai Yifu Museum China University of GeosciencesWuhan430074China School of Earth Resources China University of GeosciencesWuhan430074China Mineral Geological Survey Institute of Ningxia Hui Autonomous Region Yinchuan750021China National Demonstration Center for Experimental Mineral Exploration Education China University of GeosciencesWuhan430074China Coal Geological Survey Institute of Ningxia Hui Autonomous Region Yinchuan750021China Zhuhai Engineering Investigation Institute of Guangdong Province Zhuhai519000China

The Weining Beishan area of Ningxia Hui Autonomous Region is located at on the western edge of the Helanshan tectonic belt,which is a tectonic joint among Alxa Block,Ordos Block,and North Qilian orogenic ***,the tectonic evolution of this area remains unclear due to the lack of magmatic *** paper conducted researches on geochronology,geochemistry,and Sr-Nd-Hf isotopes of the diorite porphyrites exposed in the Weining Beishan *** zircon U-Pb dating yields two ages of 145.0±1.1 and 146.2±1.5 Ma,and the whole-rock geochemical data indicate that the diorite porphyrites are metaluminous to weakly peraluminous and high-K calc-alkaline *** characteristics of highly initial^(87)Sr/^(86)Sr ratios(0.70816 to 0.71047),negativeε_(Nd)(t)(−8.9 to−8.4),and negativeε_(Hf)(t)(−13.8 to−21.2)indicate that the diorite porphyrites originated from partial melting of the middle-lower ancient crust related to the North China *** with the regional geology,we suggested that partial melting was triggered by a tectonic activity of deep faults cutting through the crust under the regional stress transformation from compressing to extension during the Late Jurassic–Early Cretaceous,which is probably related to the westward subduction of the Paleo-Pacific Plate.

关键词： zircon U-Pb dating Sr-Nd-Hf isotopes magma source diorite porphyrite Weining Beishan area Ningxia Hui Autonomous Region geochronology geochemistry

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Difference in volatile profile between pericarp tissue and locular gel in tomato fruit

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Journal of Integrative Agriculture 2016年第12期15卷 2911-2920页

作者： WANG Li-bin jinhe bai YU Zhi-fang College of Food Science and Technology Nanjing Agricultural University Nanjing 210095 P.R. China U.S. Horticultural Research Laboratory Agricultural Research Service (ARS) United States Department of Agriculture (USDA) Ft. Pierce 34945 USA

Aroma, a complex mixture of volatile compounds, plays an important role in the perception and acceptability of tomato products by consumers. Numerous studies have reported volatile profiles in tomatoes based on measurement of the whole fruit or pericarp tissue, however, little is understood regarding the volatile compositions in the inner tissues. The objective of this study was to investigate the differences in volatile profile between pericarp tissue and Iocular gel in tomato fruit. Based on HS-SPME-GC-MS analysis, totally 42 volatile compounds were detected in FL 47 and Tasti-Lee tomato fruits. Regardless of cultivars, a substantial higher concentration of total volatile compounds was observed in pericarp than that in/ocular gel, associated with higher levels of aldehydes, hydrocarbons, and nitrogen compounds. Pericarp tissue possessed higher levels of cis-3-hexenal, hexanal, heptanal, octanal, nonanal, cymene, terpinolene, undecane, dodecane, 2-phenylethanol, 6-methyl-5-hepten-2-one, 2-methylbutyl acetate, 1-nitro-pentane, and 1-nitro-2-phenylethane, while the abundances of 2-methylpropanal, butanal, 2-methylbutanal, 2-methyl-2-butenal, 2-methylpropanol, 3-methylbutanol, 2-methylbutanol, and 2-butanone were higher in Iocular gel. Principal component analysis （PCA） and cluster analysis using GC-MS and electronic nose （E-nose） data discriminated the two tissues.

关键词： Solanum lycopersicum tomato fruit volatile profile pericarp Iocular gel

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卫宁北山金矿关键控矿因素分析

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新疆钢铁 2024年第3期 9-11页

作者：龚婷婷吴亮白金鹤成都理工大学地球与行星科学学院宁夏回族自治区矿产地质调查院(自治区矿产地质研究所)

本文通过分析研究区关键控矿因素、矿床成因、找矿前景。认为研究区具有两期主要控矿构造，要重视NE向断裂对金成矿的控制作用。金的成矿经历了初始富集、早期硫化成矿、硫化物的次生氧化与金的富集三个阶段的地质过程，成矿物质来源以... 详细信息

本文通过分析研究区关键控矿因素、矿床成因、找矿前景。认为研究区具有两期主要控矿构造，要重视NE向断裂对金成矿的控制作用。金的成矿经历了初始富集、早期硫化成矿、硫化物的次生氧化与金的富集三个阶段的地质过程，成矿物质来源以地层为主。寻找工业矿体应该以中浅部氧化矿体为主。

关键词：金矿控矿因素矿床成因卫宁北山宁夏

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Rationale for reconsidering current regulations restricting use of hybrids in orange juice

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Horticulture Research 2020年第1期7卷 2375-2381页

作者： Ed Stover Frederick G.Gmitter Jr Jude Grosser Elizabeth Baldwin Guohong Albert Wu jinhe bai Yu Wang Peter Chaires Juan Carlos Motamayor USDA/ARS US Horticultural Research Lab.2001 S Rock Rd.Ft.PierceFL 34945USA Citrus Research and Education Center Univ.Florida700 Experiment Station Rd.Lake AlfredFL 33850USA US Department of Energy Joint Genome InstituteLawrence Berkeley National Laboratory1 Cyclotron RoadBerkeleyCA 94720USA New Varieties Development&Management Corp. PO Box 941058MaitlandFL 32794USA The Coca-Cola Company 2651 Orange Ave.ApopkaFL 32703USA

Huanglongbing(HLB)is a disease that has devastated the Florida citrus industry,threatens the entire *** industry,and globally is rapidly ***’s citrus production is 90%sweet orange,which is quite sensitive to *** heavy reliance on sweet orange for Florida citrus production makes the industry especially vulnerable to diseases that are damaging to this type of ***,90%of Florida oranges are used in producing orange juice that is defined by a federal regulation known as the“orange juice standard”,specifying that at least 90%of“orange juice”must be derived from Citrus *** analyses definitively reveal that sweet orange is not a true species,but just one of many introgression hybrids of *** and ***,with phenotypic diversity resulting from accumulated mutations in this single hybrid,the“sweet orange”.No other fruit industry is limited by law to such a narrow genetic ***,there are new citrus hybrids displaying reduced sensitivity to HLB,and in some cases they produce juice,alone or in blends,that consumers would recognize as“orange juice”.Reconsidering current regulations on orange juice standards may permit use of such hybrids in“orange juice”,providing greater latitude for commercialization of these hybrids,leading to higher-quality orange juice and a more sustainable Florida orange juice industry.

关键词： orange Rational stated

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Beneficial horticultural responses from the application of solar thermotherapy to mature Huanglongbing-affected citrus trees

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Horticultural Plant Journal 2021年第5期7卷 411-422页

作者： Cheryl M.Armstrong Melissa S.Doud Weiqi Luo Smita Raithore Elizabeth A.Baldwin Wei Zhao Anne Plotto jinhe bai John A.Manthey Ed Stover Yongping Duan United States Department of Agriculture-Agriculture Research Service-Eastern Regional Research Center WyndmoorPA 19038USA United States Department of Agriculture-Agriculture Research Service-United States Horticultural Research Laboratory Fort PierceFL 34945USA Center for Integrated Pest Management North Carolina State UniversityRaleighNC 27606USA Symrise AG TeterboroNJ 07608USA

The detrimental effects of Huanglongbing(HLB)on citrus are well known and so is the need for effective methods to combat this *** thermotherapy(ST),one of the management methods to help alleviate some of the negative effects of HLB,is the process of heating trees to therapeutic temperatures by encompassing the tree within a plastic structure(Visqueen)to harness the sun’s natural *** was applied to mature‘Valencia’citrus trees in three *** vigor,yield,and Candidatus Liberibacter asiaticus(Las)titer in leaves were monitored for two consecutive seasons post ST treatment,while fruit and juice quality were evaluated at the end of the second *** promoted an increase in canopy density in most groves tested and did not have a significant effect on fruit quantity,despite the prolonged exposure of the trees to increased ***,Las titer was reduced in both leaves and juice processed from affected trees post *** respect to fruit quality,the ratio of total soluble solids to titratable acidity was higher post ST compared to controls as was the sucrose content of the juice in most treated groves,whereas limonin was higher in juice from control *** components analysis of aroma volatiles showed significant differences between juice from treated versus control trees with volatiles imparting top-note and freshness to orange juice,such as acetaldehyde,hexanal,Z-3-hexenol and linalool,being higher in juice fromtreated *** panels confirmed that flavor differences existed,ultimately showing that ST resulted in improved juice flavor in well-managed *** the effects of ST on the trees appear temporary,such outcomes emphasize its utility when used as part of an integrated management strategy for HLB-affected citrus,imparting beneficial horticultural responses with minimal to positive effects on subsequent juice flavor.

关键词： HLB Candidatus Liberibacter asiaticus Thermotherapy Juice Flavor

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Comparative analysis of the transcriptomes of the calyx abscission zone of sweet orange insights into the huanglongbingassociated fruit abscission

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Horticulture Research 2019年第1期6卷 831-845页

作者： Wei Zhao Elizabeth A.Baldwin jinhe bai Anne Plotto Mike Irey USDA/ARS Horticultural Research Laboratory 2001 South Rock RoadFort PierceFL 34945USA Southern Gardens Citrus Nursery 111 Ponce de Leon AvenueClewistonFL 33440USA

Citrus greening disease or huanglongbing(HLB)is associated with excessive pre-harvest fruit *** understand the mechanisms of the HLB-associated fruit abscission,transcriptomes were analyzed by RNA sequencing of calyx abscission zones(AZ-C)of dropped“Hamlin”oranges from HLB-diseased trees upon shaking the trees(Dd),retained oranges on diseased trees(Rd),dropped oranges from healthy shaken trees(Dh),and retained oranges on healthy trees(Rh).Cluster analysis of transcripts indicated that Dd had the largest distances from all other *** of transcriptomes revealed 1047,1599,813,and 764 differentially expressed genes(DEGs)between Dd/Rd,Dd/Dh,Dh/Rh,and Rd/*** gene ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analyses indicated hormone signaling,defense response,and secondary metabolism were involved in HLB-associated fruit ***(ET)and jasmonic acid(JA)synthesis/signaling-related genes were upregulated in Dd,while other phytohormone-related genes were generally *** addition,genes related to JA/ET-activated defense response were upregulated in Dd as *** with the phytohormone gene expression data,increased levels(p<0.05)of ET and JA,and a decreased level(p<0.05)of abscisic acid were found in Dd compared with Rd,Dh or *** theobromae level in Dd AZ-C was higher than the other fruit types,confirmed by qPCR,indicating AZ-C secondary fungal infection of HLB fruit may exacerbate their *** information will help formulate effective strategies to control HLB-related abscission.

关键词： metabolism orange analysis

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宁夏卫宁北山金场子金矿床流体来源及矿床成因:来自流体包裹体和C-H-O同位素证据

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地球科学 2021年第12期46卷 4274-4290页

作者：海连富刘安璐陶瑞白金鹤宋扬中国地质大学资源学院湖北武汉430074 固体矿产勘查国家级实验教学示范中心湖北武汉430074 宁夏回族自治区矿产地质调查院宁夏银川750021 中国地质大学逸夫博物馆湖北武汉430074

卫宁北山地区是宁夏境内最有望实现找矿突破的多金属矿成矿区之一,已发现众多Au、Ag、Cu、Pb、Zn、Fe、Co等矿点或矿化点.金场子金矿是该地区已发现的最大的金矿床,矿体主要赋存在前黑山组及中宁组内的层间断裂破碎带中,呈东西向带状分... 详细信息

卫宁北山地区是宁夏境内最有望实现找矿突破的多金属矿成矿区之一,已发现众多Au、Ag、Cu、Pb、Zn、Fe、Co等矿点或矿化点.金场子金矿是该地区已发现的最大的金矿床,矿体主要赋存在前黑山组及中宁组内的层间断裂破碎带中,呈东西向带状分布,产状与地层近乎一致.区域上除少量闪长玢岩脉出露外,岩浆岩不发育.为了探讨金场子金矿成矿流体性质、来源和矿床成因,对研究区流体包裹体和C-H-O同位素进行了研究.金场子金矿床成矿热液期可划分为4个成矿阶段,从早到晚分别是绢云母-黄铁矿-石英阶段(Ⅰ)、黄铁矿-重晶石-石英阶段(Ⅱ)、多金属硫化物-碳酸盐-石英阶段(Ⅲ)和黄铁矿-碳酸盐阶段(Ⅳ),其中Ⅲ阶段为主成矿阶段.不同成矿阶段的流体包裹体有4种类型,分别是水溶液包裹体、纯CO_(2)包裹体、CO_(2)-H_(2)O包裹体和含子晶多相包裹体.显微测温结果显示,成矿流体的完全均一温度介于171~396℃,主要集中于180~270℃,盐度介于1.30%~10.99%NaCl equiv,密度为0.24~0.78 g/cm^(3),为中低温、低盐度、低密度的CO_(2)-H_(2)O-NaCl体系,含有少量N_(2).热液期石英的δD值为-66.0‰~-32.0‰,δ^(18)O_(V-SMOW)值为+19.7‰~+22.6‰,指示成矿流体为变质流体.C同位素显示,晚阶段(Ⅳ)方解石和菱铁矿的δ^(13)C介于-2.540‰~-0.736‰,表明成矿流体中的C具有混合来源的特点,奥陶系-石炭系陆源碎屑岩和碳酸盐岩的变质脱水作用形成的流体可能是金成矿流体的主要来源.成矿过程中流体发生了明显的不混溶现象,是造成金沉淀的重要因素.矿床成因类型属造山型金矿.

关键词：稳定同位素成矿流体来源矿床成因流体包裹体金场子金矿床卫宁北山

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Use of induced pluripotent stem cell-derived brain cells,organoids,assembloids,and blood-brain barrier models in understanding alcohol and anesthetic-induced brain injuries:an emerging perspective

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Neural Regeneration Research 2024年第5期19卷 953-954页

作者： Xiaowen bai Department of Cell Biology Neurobiology&AnatomyMedical College of WisconsinMilwaukeeWIUSA

Neurological disorders,including developmental disorders,Alzheimer’s disease(AD),and psychiatric conditions,have significant social and economic impacts *** extensive research into the underlying mechanisms of these disorders,effective treatments remain elusive,partly due to the complexity of the brain,the limited availability of human brain tissue,and the blood-brain barrier(BBB)’s impermeability to certain *** perspective article discusses the potential of human induced pluripotent stem cell(iPSC)-based models of brain cells,organoids,assembloids,and BBB to advance our understanding of the etiology,progression,and mechanisms of brain injuries induced by alcohol consumption and general *** models could also be used to develop protective and therapeutic approaches.

关键词： injuries protective drugs

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A novel efficient energy absorber with free inversion of a metal foam-filled circular tube

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Applied Mathematics and Mechanics(English Edition) 2024年第1期45卷 1-14页

作者： Jianxun ZHANG Jinwen bai State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi'an Jiaotong UniversityXi'an 710049China

In this paper, a novel efficient energy absorber with free inversion of a metal foam-filled circular tube(MFFCT) is designed, and the axial compressive behavior of the MFFCT under free inversion is studied analytically and numerically. The theoretical analysis reveals that the energy is mainly dissipated through the radial bending of the metal circular tube, the circumferential expansion of the metal circular tube, and the metal filled-foam compression. The principle of energy conservation is used to derive the theoretical formula for the minimum compressive force of the MFFCT over free inversion under axial loading. Furthermore, the free inversion deformation characteristics of the MFFCT are analyzed numerically. The theoretical steady values are found to be in good agreement with the results of the finite element(FE) analysis. The effects of the average diameter of the metal tube, the wall thickness of the metal tube, and the filled-foam strength on the free inversion deformation of the MFFCT are considered. It is observed that in the steady deformation stage, the load-carrying and energy-absorbing capacities of the MFFCT increase with the increase in the average diameter of the metal tube, the wall thickness of the metal tube, or the filled-foam strength. The specific energy absorption(SEA) of free inversion of the MFFCT is significantly higher than that of the metal tube alone.

关键词： metal foam-filled circular tube(MFFCT) free inversion load-carrying capacity energy absorption

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Magnetic and electrical transport study of the intrinsic magnetic topological insulator MnBi_(2)Te_(4)with Ge doping

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Frontiers of physics 2024年第3期19卷 51-59页

作者： Qingwang bai Mingxiang Xu School of Physics Southeast UniversityNanjing 211189China

As an intrinsic magnetic topological insulator with magnetic order and non-trivial topological structure,MnBi_(2)Te_(4)is an ideal material for studying exotic topological states such as quantum anomalous Hall effect and topological axion insulating ***,we carry out magnetic and electrical transport measurements on(Mn1–xGex)Bi_(2)Te_(4)(x=0,0.15,0.30,0.45,0.60,and 0.75)single *** is found that with increasing x,the dilution of magnetic moments gradually weakens the antiferromagnetic exchange ***,Ge doping reduces the critical field of ferromagnetic ordering,which may provide a possible way to implement the quantum anomalous Hall effect at lower magnetic *** transport measurements suggest that electrons are the dominant charge carriers,and the carrier density increases with the Ge doping ***,the Kondo effect is observed in the samples with x=0.45,0.60,and *** results suggest that doping germanium is a viable way to tune the magnetic and electrical transport properties of MnBi_(2)Te_(4),opening up the possibility of future applications in magnetic topological insulators.

关键词： MnBi_(2)Te_(4) intrinsic magnetic topological insulator transition points Kondo effect

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