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Vegetation Geo-climatic Zonation in the Rocky Mountains, northern Utah, USA

Journal of Mountain Science 2014年第3期11卷 656-673页

作者： Antonin KUSBACH Helga VAn MIEGROET Janis L.BOETTInGER james n.long Department of Wildland Resources and Ecology Center Utah State University Utah State University Department of Forest Botany Dendrology and Geobiocoenology Mendel University in Brno

We developed a vegetation geo-climatic zonation incorporating the zonal concept, gradient and discriminant analysis in Wasatch Range, northern Utah, USA. Mountainous forest ecosystems were sampled and described by vegetation, physiographic features and soil properties. The Snowpack Telemetry and national Weather Service Cooperative Observer Program weather station networks were used to approximate the climate of sample plots. We analysed vegetation and environmental data using clustering, ordination, classification, and AnOVA techniques to reveal environmental gradients affecting a broad vegetation pattern and discriminate these gradients. The specific objective was to assess and classify the response of the complex vegetation to those environmental factors operating at a coarse-scale climatic level. Ordination revealed the dominant role of regional, altitude-based climate in the area. Based on vegetation physiognomy, represented by five tree species, climatic data and taxonomic classification of zonal soils, we identified two vegetation geo-climatic zones:(1) a montane zone, with Rocky Mountain juniper and Douglas-fir; and(2) a subalpine zone, with Engelmann spruce and subalpine fir as climatic climax species. Aspen was excluded from the zonation due to its great ecological amplitude. We found significant differences between the zones in regional climate and landformgeomorphology/soils. Regional climate was represented by elevation, precipitation, and air and soil temperatures; and geomorphology by soil types. This coarse-scale vegetation geo-climatic zonation provides a framework for a comprehensive ecosystem survey, which is missing in the central Rocky Mountains of the United States. The vegetation-geoclimatic zonation represents a conceptual improvement on earlier classifications. This framework explicitly accounts for the influence of the physical environment on the distribution of vegetation within a complex landscape typical of the central Rocky Mountains an

关键词： Ecological classification Ecosystemsurvey Land classification Zonal concept Vegetation zone Vegetation geo-dimatic zone Climate change

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Silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve

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neural Regeneration Research 2025年第6期20卷 1789-1800页

作者： Carina Hromada Patrick Heimel Markus Kerbl LászlóGál Sylvia nürnberger Barbara Schaedl james Ferguson nicole Swiadek Xavier Monforte Johannes C.Heinzel Antal nógrádi Andreas H.Teuschl-Woller David Hercher Department Life Science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian Cluster for Tissue Regeneration ViennaAustria Ludwig Boltzmann Institute for Traumatology The Research Center in Cooperation with AUVAViennaAustria University Clinic of Dentistry Medical University of ViennaViennaAustria Department of Plastic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of Hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tnGCs). However, the use of tnGCs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). Given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tnGC would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tnGCs and compared the various features of these improved silk^(+) tnGCs with the tubes without holes(silk^(–) tnGCs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tnGCs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tnGCs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tnGCs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tnGCs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimizatio

关键词： axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularization

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A comprehensive framework for the delimitation of species within the Bemisia tabaci cryptic complex,a global pest-species group

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Insect Science 2025年第1期32卷 321-342页

作者： Hua-Ling Wang Teng Lei Xiao-Wei Wang Stephen Cameron Jesús navas-Castillo Yin-Quan Liu M.n.Maruthi Christopher A.Omongo Hélène Delatte Kyeong-Yeoll Lee Renate Krause-Sakate james ng Susan Seal Elvira Fiallo-Olivé Kathryn Bushley John Colvin Shu-Sheng Liu College of Forestry Hebei Agricultural UniversityBaodingHebei ProvinceChina The Ministry of Agriculture Key Laboratory of Molec ular Biology of Crop Pathogens and Insects Institute of Insect SciencesZhejiang UniversityHangzhouChina natural Resources Institute University of GreenwichKentUK College of Life Sciences Taizhou UniversityTaizhouZhejiang ProvinceChina Department of Entomology Purdue UniversityWest LafayetteINUSA Instituto de Hortofruticultura Subtropical y Mediterranea"La Mayora"(IHSMUMA-CsiC) Consejo Superior de Investigaciones CientificasMalagaSpain national Crops Resources Research Institute KampalaUganda CIRAD UMR PVBMT CIRADPole de Protection des PlantesSaint-PierreFrance School of Applied Biosciences Kyungpook National UniversityDaeguRepublic of Korea unESP Faculdade de Ciencias AgronomicasBotucatuBrazil Department of Microbiology and Plant Pathology University of CaliforniaRiversideCA uSDA Agricultural Research Service 17123Emerging Pests and Pathogens Research UnitIthacaNYUSA

Identifying cryptic species poses a substantial challenge to both biologists and naturalists due to morphological *** tabaci is a cryptic species complex containing more than 44 putative species;several of which are currently among the world's most destructive crop *** and delimiting the evolution of this species complex has proved *** develop a comprehensive framework for species delimitation and identification,we evaluated the performance of distinct data sources both individually and in combination among numerous samples of the *** species complex acquired *** datasets include full mitogenomes,single-copy nuclear genes,restriction site-associated DnA sequencing,geographic range,host speciation,and reproductive compatibility ***,our well-supported topologies generated from three dense molecular markers highlighted the evolutionary divergence of species of the *** complex and suggested that the nuclear markers serve as a more accurate representation of *** species *** compatibility datasets facilitated the identification of at least 17 different cryptic species within our *** geographic range information provides a complementary assessment of species recognition,while the host range datasets provide low rate of delimiting *** further summarized different data performances in species classification when compared with reproductive compatibility,indicating that combination of mtCOI divergence,nuclear markers,geographic range provide a complementary assessment of species ***,we represent a model for understanding and untangling the cryptic species complexes based on the evidence from this study and previously published articles.

关键词： Bemisia tabaci cryptic species phylogenetics RAD-Seq reproductive compatibility whiteflies

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An analytical model to estimate the time delay to reach spontaneous ignition considering heat loss in oil reservoirs

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Petroleum Science 2024年第4期21卷 2469-2474页

作者： james J.Sheng Er-long Yang College of Petroleum Engineering Northeast Petroleum UniversityDaqing163318HeilongjiangChina

During air injection into an oil reservoir,an oxidation reaction generates some heat to raise the reservoir *** the reservoir temperature reaches an ignition temperature,spontaneous ignition *** is a time delay from the injection to *** are mixed results regarding the feasibility of spontaneous ignition in real-field projects and in laboratory *** analytical model is available in the literature to estimate the oxidation time required to reach spontaneous ignition with heat *** paper discusses the feasibility of spontaneous ignition from theoretical points and experimental and field project *** analytical model considering heat loss is *** models with and without heat loss investigate the factors that affect spontaneous *** on the discussion and investigations,we find that it is more difficult for spontaneous ignition to occur in laboratory experiments than in oil reservoirs;spontaneous ignition is strongly affected by the initial reservoir temperature,oil activity,and heat loss;spontaneous ignition is only possible when the initial reservoir temperature is high,the oil oxidation rate is high,and the heat loss is low.

关键词： Spontaneous ignition Time delay Air injection Heat loss Low temperature oxidation Combustion

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The global nitrogen cycle:Past,present and future

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Science China(Life Sciences) 2005年第z2期48卷 669-677页

作者： james n.Galloway Environmental Sciences Department University of Virginia Charlottesville Virginia 22904USA

Food and energy production converts n2 to reactive n species that cascade through environmental reservoirs and in the process impact human and ecosystem health. This presentation will examine the impact of increased n mobilization on the global n cycle by contrasting n distribution in the late-19th century with those of the late-20th century. The presentation will give a general overview of regional differences and will conclude with a projection of the global n cycle for 2050.

关键词： global n cycle, human nr creation, n budgets, consquences of n cycle alteration.

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Tinker,tailor,soldier,cell:the role of C-type lectins in the defense and promotion of disease

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Protein & Cell 2023年第1期14卷 4-16页

作者： james n.Arnold Daniel A.Mitchell School of Cancer and Pharmaceutical Sciences King's College LondonLondon SE11ULUK Warwick Medical School University of WarwickCoventry CV22DXUK

C-type lectins(CTLs)represent a large family of soluble and membrane-bound proteins which bind calcium dependently via carbohydrate recognition domains(CRDs)to glycan residues presented on the surface of a variety of *** deconvolution of a cell’s glycan code by CTLs underpins several important physiological processes in mammals such as pathogen neutralization and opsonization,leukocyte trafficking,and the inflammatory ***,as our knowledge of CTLs has developed it has become apparent that the role of this innate immune family of proteins can be double-edged,where some pathogens have developed approaches to subvert and exploit CTL interactions to promote infection and sustain the pathological ***,CTL interactions with host glycoproteins can contribute to inflammatory diseases such as arthritis and cancer whereby,in certain contexts,they exacerbate inflammation and drive malignant *** review discusses the‘dual agent’roles of some of the major mammalian CTLs in both resolving and promoting infection,inflammation and inflammatory disease and highlights opportunities and emerging approaches for their therapeutic modulation.

关键词： C-type lectins DC-SIGn MBL selectins infection arthritis cancer

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Purification and characterization of a novel anti-coagulant from the leech Hirudinaria manillensis

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Zoological Research 2019年第3期40卷 205-210页

作者： Ruo-Mei Cheng Xiao-Peng Tang Ai-Lin.long james Mwangi Ren Lai Rui-Pu Sun Cheng-Bo long Zhen-Qing Zhang Department of Pharmaceutical Sciences College of Pharmaceutical SciencesSoocbow UniversitySuzhou Jiangsu 215123China Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Kunming Institute of ZoologyKunming Yunnan 650223China Kunming College of Life Science University of Chinese Academy of SciencesKunming Yunnan 650204China Jiangxi Medical College Nanchang UniversityNanchang Jiangxi 330006China

Protease inhibitors have been reported rarely from the leech Hirudinaria *** this study,we purified a novel protease inhibitor(bdellin-HM-2)with anticoagulant properties from *** a molecular weight of 1.4x104,bdellin-HM-2 was also characterized with three intra?molecular disulfide bridges at the n-terminus and multiple HHXDD and HXDD motifs at *** revealed that the putative nucleotide-encoding protein of bdellin-HM-2 contained 132 ami no acids and was encoded by a 399 bp open reading frame(ORF).Sequence alignment showed that bdellin-HM-2 shared similarity with the“non-classical"Kazal-type serine protease inhibitors,but had no inhibitory effect on trypsin,elastase,chymotrypsin,kallikrein,factor Xlla(FXIIa),factor Xia(FXIa),factor Xa(FXa),thrombin,or ***-HM-2 showed anticoagulant effects by proIonging the activated partial thromboplastin time(aPTT),indicating a role in enabling *** to obtain a blood meal from its *** results suggest that bdellin-HM丒2 may play a crucial role in blood-sucking in this leech species and may be a pote ntial can didate for the development of clinical anti-thrombotic drugs.

关键词： Hirudinaria manillensis Bdellin-HM-2 "non-classical"Kazal inhibitors Blood sucking Anticoagulant Anti-thrombotic drugs

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Targeting muscle to treat Charcot-Marie-Tooth disease

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neural Regeneration Research 2024年第8期19卷 1653-1654页

作者： David Villarroel-Campos james n.Sleigh Department of neuromuscular Diseases and UCL Queen Square Motor neuron Disease Centre UCL Queen Square Institute of NeurologyUniversity College LondonLondonUK UK Dementia Research Institute University College LondonLondonUK

Charcot-Marie-Tooth disease(CMT)is a hereditary peripheral neuropathy causing muscle weakness/wasting and sensory dysfunction predominantly in limb *** patients display gait abnormalities,foot deformities,loss of sens... 详细信息

关键词： Marie sensation neuropathy

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Modern Issues in Food Safety - A Perspective

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Journal of Integrative Agriculture 2012年第1期11卷 9-13页

作者： james n Seiber Department of Environmental Toxicology University of California

There is much current interest worldwide in food safety. This results in large part from well publicized outbreaks due to foodborne pathogens, chemical food safety related to pesticides, and from persistent organic po... 详细信息

关键词： Modern Issues in Food Safety A Perspective

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Gastro-gastric intussusception in the setting of a neuroendocrine tumor: A case report

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World Journal of Clinical Cases 2019年第21期7卷 3517-3523页

作者： Alex Zhornitskiy long Le Serene Tareen Gezman Abdullahi Deepthi Karunasiri james H Tabibian Department of Internal Medicine Olive View-UCLA Medical CenterSylmarCA 91342United States Department of Pathology and Laboratory Medicine Olive View-UCLA Medical CenterSylmarCA 91342United States Division of Gastroenterology Department of MedicineOlive View-UCLA Medical CenterSylmarCA 91342United States

BACKGROUnD While in children intussusception is often idiopathic,in adults it is commonly caused by a pathologic condition functioning as a lead *** is important to note that a variety of pathologic conditions may trigger intussusception,with malignancy being a relatively frequent culprit in adults;this should be considered high on the differential diagnosis during *** SUMMARY This is a case of a 40-year-old female presenting to the emergency department(ED)with three days of acute on chronic,peri-umbilical abdominal pain described as waxing and waning,and pressure-like in *** computed tomography(CT)of the abdomen and pelvis with contrast in the ED(after her pain had resolved)re-demonstrated a previously noted 13 mm lesion in the gastric antrum but no clear cause of the *** ultrasound was pursued,and the mass lesion was sampled via fine needle ***-procedure the patient experienced another episode of severe pain which prompted a repeat stat CT abdomen and pelvis with contrast;this re-demonstrated the 13 mm antral lesion and in addition was remarkable for a gastro-gastric *** upper gastrointestinal gastrograffin series was ordered(completed only after the pain had subsided)and showed resolution of the *** was consistent with a diagnosis of low-grade neuroendocrine tumor(nET).Surgery was initially deferred during the hospitilization given the low grade pathology of the lesion;however further multidisciplinary discussion between Surgery,Oncology,and Gastroenterology recommended resection given the patient’s recurrent abdominal pain with the nET functioning as a lead point for further intussusception,and the patient thus underwent robotically-assisted wedge *** We present a unique case of severe,intermittent,peri-umbilical pain related to gastro-gastric intussusception caused by an antral nET lead *** case highlights the importance of considering neoplasms as t

关键词： Abdominal pain Gastro-gastric intussusception neuroendocrine tumor Case report

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