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Early Cretaceous overprinting of the Mesozoic Daqing Shan fold-and-thrust belt by the Hohhot metamorphic core complex,Inner Mongolia,China

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Geoscience Frontiers 2010年第1期1卷 1-20页

作者： Gregory A.Davis brian j.darby Department of Earth Sciences University of Southern CaliforniaLos AngelesCA 90089-0740USA ExxonMobil Exploration Company HoustonTXUSA

The Early Cretaceous Hohhot metamorphic core complex （mcc） of the Daqing Shan （Mtns.） of central Inner Mongolia is among the best exposed and most spectacular of the spatially isolated mcc＇s that developed within the northern edge of the North China ＂craton＂. All of these mcc＇s were formed within the basement of a Late Paleozoic Andean-style arc and across older Mesozoic fold-and-thrust belts of variable age and tectonic vergence. The master Hohhot detachment fault roots southwards within the southem margin of the Daqing Shan for an along-strike distance of at least 120 km. Its geometry in the range to the north is complicated by interference patterns between （1） primary, large-scale NW-SE-trend- ing convex and concave fault corrugations and （2） secondary ENE-WSW-trending antiforms and syn- forms that folded the detachment in its late kinematic history. As in the Whipple Mtns. of California, the Hohhot master detachment is not of the Wernicke （1981） simple rooted type; instead, it was spawned from a mid-crustal shear zone, the top of which is preserved as a mylonitic front within Carboniferous metasedimentary rocks in its exhumed lower plate. 4~Ar-39Ar dating of siliceous volcanic rocks in basal sections of now isolated supradetachment basins suggest that crustal extension began at ca. 127 Ma, although lower-plate mylonitic rocks were not exposed to erosion until after ca. 119 Ma. Essentially synchronous cooling of bornblende, biotite, and muscovite in footwall mylonitic gneisses indicates very rapid exhumation and at ca. 122--120 Ma. Contrary to several recent reports, the master detachment clearly cuts across and dismembers older, north-directed thrust sheets of the Daqing Shah foreland fold-and-thrust belt. Folded and thrust-faulted basalts within its foredeep strata are as young as 132.6 ± 2.4 Ma, thus defining within 5--6 Ma the regional tectonic transition between crustal contraction and profound crustal extension.

关键词： North China Yin Shah Daqing Shan Hohhot mcc Cretaceous extension

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Effects of monoculture-conditioned soils on common tallgrass prairie species productivity

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journal of Plant Ecology 2019年第3期12卷 474-484页

作者： Thomas P.McKenna brian j.darby Kathryn A.Yurkonis Kansas Biological Survey University of Kansas2101 Constant Ave.Takeru Higuchi HallLawrenceKS 66047USA Department of Biology University of North Dakota10 Cornell Street Stop 9019Grand ForksND 58202USA

Aims Within biodiversity-ecosystem function experiments,it is widely understood that yields of some species rapidly decline when planted in *** effect may arise due to decreased access to soil nutrients or an increase in detrimental soil patho-gens within monoculture *** determine whether or not soil conditioning affects tall grass prairie species biomass produc-tion,we conducted a field experiment to assess species growth in conspecifically and heterospecifically conditioned soils and a greenhouse experiment to elucidate how conspecific soil biota affected species *** To test for species-specific soil effects,seedlings of the legume Astragulus canadensis,the cool-season grass Elymus canaden-sis,the forb Helianthus maximiliani and the warm-season grass Panicum virgatum were grown in field plots that had either been conspecifically or heterospecifically conditioned over 2 *** growth was recorded over a single growing season,and soils were assessed for differences in their nematode(mesofauna)*** of these species were additionally grown over a 6-week period in conspecifically conditioned soil that was either untreated,heated to 60°C,sterilized(autoclaved at 120°C)or heated to 60°C and reinoculated with conspecific soil *** two heating treatments were used to compare growth responses between a low-and high-temperature soil *** reinoculation treatment was used to assess the effect of soil biota in light of any nutrient changes that may have occurred with soil *** Findings Elymus canadensis,*** and *** growth was improved in field plots conditioned by the legume *** com-pared with their growth in conspecifically conditioned(home)*** variation(grass versus nongrass)in their soil nematode com-munities,there was no evidence to suggest that these three species were inhibited by conspecific or functionally conspecific soil condi-tioning in the ***

关键词： Astragulus canadensis diversity Elymus canadensis Helianthus maximiliani monoculture overyielding Panicum virgatum productivity soil biota soil conditioning

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中生代燕山褶皱冲断带的构造演化——以河北省和辽宁省为重点的研究

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北京地质 2002年第4期14卷 1-40页

作者： Gregory A.Davis 郑亚东王琮 brian j.darby 张长厚 George Gehrels 汪洋李凯明南加州大学地球科学系北京大学地质系中国地质大学亚利桑那大学地球科学系中国科学院广州地球化学研究所广州510640 中国地质大学(北京)地球科学与资源学院岩石教研室北京100083

从渤海湾和辽宁省开始 ,燕山山脉沿北纬 40°左右一直向西延伸到河北和内蒙古的边界。继续向西 ,以太古宙为基底的燕山山脉被上第三系所覆盖 ;因此 ,虽然内蒙古的阴山很可能就是燕山向西的延伸 ,但还缺乏有力的证据。中生代燕山褶皱冲... 详细信息

从渤海湾和辽宁省开始 ,燕山山脉沿北纬 40°左右一直向西延伸到河北和内蒙古的边界。继续向西 ,以太古宙为基底的燕山山脉被上第三系所覆盖 ;因此 ,虽然内蒙古的阴山很可能就是燕山向西的延伸 ,但还缺乏有力的证据。中生代燕山褶皱冲断带以陆源沉积、岩浆作用和构造变形 (包括多期的褶皱作用 ,挤压、伸展及走滑断层作用 )为特征。对北京、冀北与辽西地区侵入岩及火山岩的野外工作及测年 (U Pb,40 Ar 39Ar方法 )研究揭示出该区中生代复杂的构造变形特征 ;而这种构造变形特征被归因于 :(1)中生代以前 (二叠纪到中生代早期 )复杂的早期变形序列 ,以及 (2 )中生代时期交替发生的主要构造形迹向南和向北的构造汇聚作用。燕山在中侏罗世之前 (早于 180 Ma)向南运动的低角度的逆冲断层发育在一条二叠纪三叠纪岩浆弧的南部 ,太古宙基底及元古宙和显生宙盖层均卷入其中。该次推覆作用可能是 (1)古生代时期蒙古弧与安第斯型的大陆弧沿华北板块的北部边缘发生碰撞的后果 ,或 (2 ) (北部陆块 )向南俯冲于华北太古宙“克拉通”之下时形成的 ,类似于美国科迪勒拉型的弧后、前陆褶皱冲断带。此次褶皱冲断发生之后 ,该推覆断层的上盘经历了广泛的剥蚀 ,随后中侏罗世火山沉积地层同时沉积在上、下盘之上。

关键词：燕山地区挤压变形岩浆作用中生代褶皱冲断带河北辽宁

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Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William j.Flerlage Mark L.Dell’Acqua brian M.Cox Fereshteh S.Nugent Uniformed Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(Simmons et al.,2024).Diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through complex interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

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Effect of Air Plasma Processing on the Adsorption Behaviour of Bovine Serum Albumin on Spin-Coated PMMA Surfaces

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journal of Bionic Engineering 2008年第3期5卷 204-214页

作者： Chaozong Liu brian j. Meenan Advanced Materials and Biomaterials Research Centre School of Engineering The Robert Gordon University Aberdeen ABIO 1FR UK Northern ireland Bioengineering Centre University of Ulster Newtownabbey BT37 OQB Northern Ireland UK

This paper reports the adsorption of Bovine Serum Albumin （BSA） onto Dielectric Barrier Discharge （DBD） processed Poly（methyl methacrylate）（PMMA） surfaces by a Quartz Crystal Microbalance with Dissipation monitoring （QCM-D） technique. The purpose is to study the influence of DBD processing on the nature and scale of BSA adsorption on PMMA surface in vitro. It was observed that DBD processing improves the surface wettability of PMMA film, a fact attributable to the changes in surface chemistry and topography. Exposure of the PMMA to Phosphate Buffed Saline （PBS） solution in the QCM-D system resulted in surface adsorption which reaches an equilibrium after about 30 minutes for pristine PMMA, and 90 minutes for processed PMMA surface. Subsequent injection of BSA in PBS indicated that the protein is immediately adsorbed onto the PMMA surface. It was revealed that adsorption behaviour of BSA on pristine PMMA differs from that on processed PMMA surface. A slower adsorption kinetics was observed for pristine PMMA surface, whilst a quick adsorption kinetics for processed PMMA. Moreover, the dissipation shift of protein adsorption suggested that BSA forms a more rigid structure on pristine PMMA surface that on processed surface. These data suggest that changes in wettability and attendant chemical properties and surface texture of the PMMA surface may play a significant role in BSA adsorption process.

关键词： in vitro test protein adsorption surface modification polymethylmethacrylate QCM-D

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Crystalline compounds for remediation of rare-earth fission products:A review

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journal of Rare Earths 2022年第3期40卷 365-380,I0001页

作者： Saehwa Chong brian j.Riley Zayne j.Nelson Pacific Northwest National Laboratory RichlandWA99352USA

Rare earth(RE)-containing crystals have been investigated as media for the immobilization of RE fission products from nuclear waste *** reprocessing of spent nuclear fuel,fission products including REs,alkalis,and alkaline earths released from the *** viable option to immobilize the RE fission products is to incorporate them into chemically durable crystalline phases in specific waste *** study summarizes the crystal structures and synthesis methods of six RE-containing compounds that have applications in remediation of RE fission *** compounds include oxyapatite(AE_(2)RE_(8)(SiO_(4))_(6)O_(2)),oxychloride(REOCl),borosilicate(RE_(3)BSi_(2)O_(10)),pyrochlore(RE_(2)M_(2)O_(7)),monazite(REPO_(4)),and perovskite(REMO_(3))where AE denotes alkaline earth metals and M denotes transition *** review provides an overview of literature on the usage of these six compounds for immobilizing RE fission products and summarizes different synthesis methods for producing these *** of structural parameters with different REs in each compound are also discussed.

关键词： Rare-earth compounds Nuclear waste forms Crystal structures Synthesis of rare-earth compounds

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Trees are rarely most abundant where they grow best

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journal of Plant Ecology 2012年第1期5卷 46-51页

作者： brian j.McGill School of Biology and Ecology and Sustainability Solutions Initiative 303 Deering HallUniversity of MaineOronoME 04469USA

Aims A common assumption in ecology is that where a species is found to be most abundant must correspond to the environmental context in which the species performs the best(*** niche space).This assumption is central to common conservation and management tools such as habitat suitability assessment and species distribution modeling.I test this *** I use the US Forest Inventory Assessment data for the abundance of trees across eastern North America.I use the FORAST tree-ring dataset for ontogenetic growth rate(tree-ring increment),a measure of niche performance and correlated with intrinsic rate of increase,*** Findings I find that across 15 species,there are significantly more negative correlations than expected by *** negative correlation between abundance and performance across space contradicts common assumptions but is consistent with an inclusive niche structuring of the community.

关键词： tree rings biogeography inclusive niche climate change

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The impact of seasonality on multi-scale feature extraction techniques

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International journal of Digital Earth 2020年第1期13卷 9-21页

作者： brian Moore jacob j.McKee Geographic Information Science and Technology Group Computational Sciences and Engineering DivisionOak Ridge National LaboratoryOak RidgeTNUSA

A key component in constructing a broad-scale,gridded population dataset is fine resolution geospatial data accurately depicting the extent of human *** datasets are often developed using a wide range of methods and classification techniques,including the use of spatial features,spectral features,or the coupling of both to identify the presence of man-made structures from high-resolution satellite *** using spatial and textural-based descriptors to generate highresolution settlement layers for two dissimilar regions at the peak of seasonal disparity,this study attempts to quantify the influence of seasonality on the accuracy of a supervised,multi-scale,feature extraction framework for automated delineation of human *** generated by numerous models are evaluated against a reference dataset allowing for assessment of seasonal and feature differences in the context of *** or regional mapping of human settlement requires the assemblage of high-resolution satellite images with variegated acquisition characteristics(season,sun elevation,off-nadir,etc.)to produce a cloud-free composite image from which features are *** of this study suggest an emphasis on imagery criteria,in particular acquisition date,could improve classification accuracy when mapping human settlement at scale.

关键词： Remote sensing highresolution imagery image processing human settlement accuracy

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Variability of cell proliferation in the proximal and distal colon of normal rats and rats with dimethylhydrazine induced carcinogenesis

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World journal of Gastroenterology 2002年第5期8卷 847-852页

作者： Kate E Williamson brian j Rowlands Department of Surgery Institute of Clinical ScienceThe Queen's University of BelfastBelfastUK

AIM：To investigate the patterns of cell proliferation in proximal and distal colons in normal rats and rats with1,2-dimethylhydrazine(DMH)induced carcinogenesis using the thymidine analogue ***:Colonic crypt cell proliferation was immunohistochemically detected using the anti-bromodeoxyuridine Bu20a monoclonal ***:Marked regional differences were found in both *** labelling index(LI)and proliferative zone size in both normal(8.65±0.34vs7.2±0.45,27.74±1.07vs16.75±1.45)andDMH groups(13.13±0.46vs11.55±0.45,39.60±1.32vs35.52±1.58)were significantly higher in distal than in proximal colon(P<0.05).although the number of cells per proxmal crypt was greater(31.45±0.20vs34.45±0.39,42.68±0.53vs49.09±0.65,P<0.001).Crypt length,total LT and proliferative zone size all increased in both proximal and distal regions of DMH rats compared to normal controls(P<0.0001).In DMH-treated rat colon a shift of labelled cells to higher crypt cell positions was demonstrated distally whist a bi-directional shift was evident proximally(P<0.05).CONCLUSION:Our results show that changes in cell proliferation patterns,as assessed by bromodeoxyuridine uptake,can act as a reliable intermediate marker of colonic cancer *** differences between proliferation patterns in distal and proximal colon may be associated with the higher incidence of tumors in t he distal colon.

关键词：溴脱氧尿嘧啶二甲肼细胞增殖致癌机制动物实验

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The endogenous progenitor response following traumatic brain injury:a target for cell therapy paradigms

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Neural Regeneration Research 2022年第11期17卷 2351-2354页

作者： Anna Badner brian j.Cummings Department of Psychiatry and Behavioral Sciences Stanford UniversityPalo AltoCAUSA Sue and Bill Gross Stem Cell Center University of California-IrvineIrvineCAUSA Institute for Memory Impairments and Neurological Disorders University of California-IrvineIrvineCAUSA Physical Medicine and Rehabilitation University of California-IrvineIrvineCAUSA Department of Anatomy and Neurobiology University of California-IrvineIrvineCAUSA

Although there is ample evidence that central nervous system progenitor pools respond to traumatic brain injury,the reported effects are variable and likely contribute to both recovery as well as *** a better understanding of the diverse progenitor populations in the adult brain and their niche-specific reactions to traumatic insult,treatments can be tailo red to enhance the benefits and dampen the deleterious effects of this *** review provides an overview of endogenous precursors,the associated effects on cognitive recovery,and the potential of exogenous cell therapeutics to modulate these endogenous repair *** the hippocampal dentate gyrus and subventricular zone of the lateral ventricles,more recently identified sites of adult neurogenesis,the meninges,as well as circumventricular organs,are also discussed as targets for endogenous ***,this review highlights that progenitor prolife ration alone is no longer a meaningful outcome and studies must strive to better chara cterize precursor spatial localization,transcriptional profile,morphology,and functional synaptic *** improved insight and a more targeted approach,the stimulation of endogenous neurogenesis remains a promising strategy for recovery following traumatic brain injury.

关键词： cell therapy endogenous repair neurogenic niche progenitors traumatic brain injury

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