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151.
GORDON MEWAN 《American anthropologist》2006,108(4):914-915
Cultural Landscapes in the Ancient Andes: Archaeologies of Place . Jerry D. Moore. Gainesville: University Press of Florida, 2005. 270 pp. 相似文献
152.
Magdalena Winiarska Kamil Bojarczuk Beata Pyrzynska Jacek Bil Marta Siernicka Michal Dwojak Malgorzata Bobrowicz Nina Miazek Piotr Zapala Agnieszka Zagozdzon Magdalena Krol Aleksandra Syta Paulina Podszywalow-Bartnicka Zofia Pilch Anna Dabrowska-Iwanicka Przemyslaw Juszczynski Dimitar G Efremov Mikolaj Slabicki Thorsten Zenz Aude Le Roy Daniel Olive Tomasz P Rygiel Jeanette HW Leusen Jakub Golab 《MABS-AUSTIN》2014,6(5):1300-1313
153.
María Teruel Carmen P Simeon Jasper Broen Madelon C Vonk Patricia Carreira Maria Teresa Camps Rosa García-Portales Esmeralda Delgado-Frías Maria Gallego Gerard Espinosa the Spanish Scleroderma Group Lorenzo Beretta Paolo Airó Claudio Lunardi Gabriela Riemekasten Torsten Witte Thomas Krieg Alexander Kreuter J?rg HW Distler Nicolas Hunzelmann Bobby P Koeleman Alexandre E Voskuyl Annemie J Schuerwegh Miguel ángel González-Gay Timothy RDJ Radstake Javier Martin 《Arthritis research & therapy》2012,14(3):R154-6
Introduction
The aim of the present study was to investigate the possible role of CD40 and CD40 ligand (CD40LG) genes in the susceptibility and phenotype expression of systemic sclerosis (SSc).Methods
In total, 2,670 SSc patients and 3,245 healthy individuals from four European populations (Spain, Germany, The Netherlands, and Italy) were included in the study. Five single-nucleotide polymorphisms (SNPs) of CD40 (rs1883832, rs4810485, rs1535045) and CD40LG (rs3092952, rs3092920) were genotyped by using a predesigned TaqMan allele-discrimination assay technology. Meta-analysis was assessed to determine whether an association exists between the genetic variants and SSc or its main clinical subtypes.Results
No evidence of association between CD40 and CD40LG genes variants and susceptibility to SSc was observed. Similarly, no significant statistical differences were observed when SSc patients were stratified by the clinical subtypes, the serologic features, and pulmonary fibrosis.Conclusions
Our results do not suggest an important role of CD40 and CD40LG gene polymorphisms in the susceptibility to or clinical expression of SSc. 相似文献154.
Maas RH Bakker RR Boersma AR Bisschops I Pels JR de Jong E Weusthuis RA Reith H 《Biotechnology for biofuels》2008,1(1):14
Introduction
The limited availability of fossil fuel sources, worldwide rising energy demands and anticipated climate changes attributed to an increase of greenhouse gasses are important driving forces for finding alternative energy sources. One approach to meeting the increasing energy demands and reduction of greenhouse gas emissions is by large-scale substitution of petrochemically derived transport fuels by the use of carbon dioxide-neutral biofuels, such as ethanol derived from lignocellulosic material. 相似文献155.
Fluorescent antibody and complement-fixation tests of agents isolated in tissue culture from measles patients 总被引:4,自引:0,他引:4
156.
RYLE G. J. A.; POWELL C. E.; TIMBRELL M. K.; GORDON A. J. 《Journal of experimental botany》1989,40(7):733-739
Single, clonal plants of white clover were grown without inorganicnitrogen in four contrasting day/night temperature regimes,with a 12 h photoperiod, in controlled environments. Root andnodule respiration and acetylene reduction activity were measuredin a flow-through system during both day and night for plantsacclimated to day/night regimes of 23/18, 15/10 and 10/5 ?C.Similar measurements were made on plants acclimated to 20/15?C and stepwise at temperatures from 4 to 33 ?C. Peak rate of ethylene production, nitrogenase-linked respirationand basal root + nodule respiration increased approximatelylinearly from 5 to 23 ?C both in temperature-acclimated plantsand in plants exposed to varying measurement temperatures. Themeasured attributes did not vary significantly between day andnight. Temperatures above 2325 ?C did not further enhancethe rate of ethylene production, which remained essentiallythe same up to the maximum measured temperature of 33 ?C. The measurements of nitrogenase-linked respiration between 5and 23 ?C, during both day and night, demonstrated a constantenergetic cost of acetylene reduction of 2.9 µmolCO2 µmol C2H41,. Over the same temperature range,the approximate activation energy of acetylene reduction was60 kJ mol1. The integrated day plus night nitrogenase-linkedrespiration accounted for 13.416% of the plantsnet shoot photosynthesis in a single diurnal period: there wasno significant effect of temperature between 5 and 23 ?C. Key words: Trifolium repens, white clover, temperature, N2 fixation, respiration 相似文献
157.
158.
Mature B cells are required for acute splenic infection, but not for establishment of latency, by murine gammaherpesvirus 68. 总被引:21,自引:12,他引:9
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Murine gammaherpesvirus 68 (gamma HV-68; also referred to as MHV-68) is a gammaherpesvirus which infects murid rodents. Previous studies showed that CD8 T cells are important for controlling gamma HV-68 replication during the first 2 weeks of infection and suggested a role for B cells in latent or persistent gamma HV-68 infection. To further define the importance of B cells and CD8 T cells during acute and chronic gamma HV-68 infection, we examined splenic infection in mice with null mutations in the transmembrane domain of the mu-heavy-chain constant region (MuMT; B-cell and antibody deficient) or in the beta2-microglobulin gene (beta2 -/-; CD8 deficient). Immunocompetent mice infected intraperitoneally with gamma HV-68 demonstrated peak splenic titers 9 to 10 days postinfection, cleared infectious virus 15 to 20 days postinfection, and harbored low levels of latent virus at 6 weeks postinfection. Beta2-/- mice showed peak splenic gamma HV-68 titers similar to those of normal mice but were unable to clear infectious virus completely from the spleen, demonstrating persistent infectious virus 6 weeks postinfection. These data indicate that CD8 T cells are important for clearing infectious gamma HV-68 from the spleen. Infected MuMT mice did not demonstrate detectable infectious gamma HV-68 in the spleen at any time after infection, indicating that mature B lymphocytes are necessary for acute splenic infection by gamma HV-68. Despite the lack of measurable acute infection, MuMT spleen cells harbored latent virus 6 weeks postinfection at a level about 100-fold higher than that in normal mice. These data demonstrate establishment of latency by a herpesvirus in an organ in the absence of acute viral replication in that organ. In addition, they demonstrate that gamma HV-68 can establish latency in a cell type other than mature B lymphocytes. 相似文献
159.
GORDON B. CURRY ALWYN WILLIAMS 《Lethaia: An International Journal of Palaeontology and Stratigraphy》1983,16(2):111-118
A fine hexagonal network of microscopic ridges has been discovered on the internal shell surface of the cosmopolitan Lower Palaeozoic inarticulate genus Lingulella. The micro-ornamentation has been recognised on all well-preserved specimens examined, from Cambrian and Ordovician successions in Ireland, North America, Gt. Britain, Spitzbergen, and China. Examination of the mantle of the related Recent genus Lingula revealed that the outer epithelial cells are arranged in a hexagonal close-packed pattern comparable in size and form to the micro-ornamentation in the fossil shells. This fact, along with the discovery of a polygonal pattern on some organic layers in the Lingula shell, suggests that the micro-ornamentation in fossil Lingulella is the mould of the outer epithelium responsible for shell secretion. No trace of epithelial moulds has yet been found in specimens of Lingula from younger Palaeozoic successions. This difference may prove to be a useful diagnostic feature in distinguishing linguloid inarticulates from one another. Epithelial moulds , Lingulella, Palaeoglossa, Lingula, Cambrian, Ordovician, Recent. 相似文献
160.
A device for measuring the integrated temperature sensed by a thermocouple during a grass, forest or other landscape fire is described and its performance evaluated. It consists of a small tube containing an electronic circuit to which is attached a length of thermocouple wire. The tube is buried for the duration of the fire. Principal component of the circuit is an E-cell (or microcoulometer) which when cleared allows calculation of the temperature/time integral. Performance was found to be reliable and accurate: because of its low cost it has widespread application for measuring the temperature in soil, plants or air during fires. 相似文献