|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Interleukin (IL)‐4 and to a lesser extent either IL‐13 or interferon‐gamma regulate the production of eotaxin‐2/CCL24 in nasal polyps显示文摘 | D.Lezcano‐Meza B.Dávila‐Dávila A.Vega‐Miranda M. C.Negrete‐García L. M.Teran | 2003 | Allergy2003，，10： | 1 |
| 2 | The thymus of the hairless rhino‐j (hr/hr‐j) mice显示文摘 | I.SAN JOSE O.GARCíA‐SUáREZ J.HANNESTAD R.CABO L.GAUNA J.REPRESA J. A.VEGA | 2002 | Journal of Anatomy2002，，4： | 1 |
| 3 | A study of chlorophyll-like and phycobilin pigments in the C endosymbiont of the apple- snail Pomacea canaliculata显示文摘Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were investigated.Acetone extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of chlorophylls.Three fractions obtained from silica gel column chromatography of the acetone extracts(CI,CII and CIII),were studied by positive ion fast atom bombardment-mass spectrometry(FAB–MS)and hydrogen-nuclear magnetic resonance(H-NMR).Results indicated the presence of(1)a sterol in the yellow colored CI fraction;(2)a mixture of pheophorbides a and b in the major green fraction,CII;and(3)a modified pheophorbide a in the smaller green fraction,CIII.Aqueous extracts of the C endosymbiont did not show evidence of the occurrence of C-phycocyanin,allophycocyanin or phycoerithrin(light absorption,fluorescence emission,and electrophoresis of the protein moieties)while cyanobacterial cells(Nostoc sp.)showed evidence of C-phycocyanin and allophycocyanin.The possible phylogenetic and functional significance of the pigments present in the C endosymbiont is discussed. | ISRAEL A.VEGA FEDERICO A.DELLAGNOLA JORGE A.HURST MARTÍN S.GODOY ALFREDO CASTRO-VAZQUEZ | 2012 | BIOCELL2012，36，2： | 0 |
| 4 | Evidence for maternal transmission of a putative endosymbiont in the digestive gland of Pomacea canaliculata(Architaenioglossa,Ampullariidae)显示文摘The digestive gland of the apple snail Pomacea canaliculata lodges two types of pigmented corpuscles(identified as C and K corpuscles)which has been proposed as endosymbiont/s.Both corpuscular types are always present in the digestive gland of adult snails,they are released into the tubuloacinar lumen and are later expelled in the feces.On their part,hatchlings lack any C or K corpuscles in the digestive gland as well as in their feces,whereas C corpuscles appear in both the gland and feces within one week after hatching.Hence,it is possible that the detritivorous hatchlings acquire the putative C-endosymbiont from feces in the sediments where they live,i.e.through‘lateral’or‘horizontal’transmission.This possibility was put to test in an experiment in which we prevented any lateral transmission,by a 7-days aseptic culture,with no food,of aseptically obtained hatchlings.At the end of the experiment,we observed that most juveniles had survived the culture period,and hence the digestive glands and feces of survivors were studied by light microscopy of resin embedded,toluidine blue-stained sections.All studied glands and fecal samples showed C corpuscles.It is concluded that lateral transmission of the endosymbiont,if any,is not indispensable for the acquisition of the endosymbiont by hatchlings. | EDUARDO KOCH ISRAEL A.VEGA ALFREDO CASTRO-VAZQUEZ | 2017 | BIOCELL2017，41，2： | 0 |
| 5 | Modelling fuel loads of understorey vegetation and forest floor components in pine stands in NW Spain显示文摘In this study,310 destructively sampled plots were used to develop two equation systems for the three main pine species in NW Spain(P.pinaster;P.radiata and P.sylvestris):one for estimating loads of understorey fuel components by size and condition(live and dead)and another one for forest floor fuels.Additive systems of equations were simultaneously fitted for estimating fuel loads using overstorey,understorey and forest floor variables as regressors.The systems of equations included both the effect of pine species and the effect of understorey compositions dominated by ferns-brambles or by woody species,due to their obvious structural and physiological differences.In general,the goodness-of-fit statistics indicated that the estimates were reasonably robust and accurate for all of the fuel fractions.The best results were obtained for total understorey vegetation,total forest floor and raw humus fuel loads,with more than 76%of the observed variability explained,whereas the poorest results were obtained for coarse fuel loads of understory vegetation with a 53%of observed variability explained.To reduce the overall costs associated with the field inventories necessary for operational use of the models,the additive systems were fitted again using only overstorey variables as potential regressors.Only relationships for fine(<6 mm)and total understorey vegetation and total forest floor fuel loads were obtained,indicating the complexity of the forest overstorey-understorey and overstorey-forest floor relationships.Nevertheless,these models explained around 52%of the observed variability.Finally,equations estimating the total understorey vegetation and the total forest floor fuel loads based only on canopy cover were fitted.These models explained only 26%-32%of the observed variability;however,their main advantage is that although understorey vegetation in forested landscapes is largely invisible to remote sensing,canopy cover can be estimated with moderate accuracy,allowing for landscape-scale estimates of total fuel loads.The equations represent an appreciable advance in understorey and forest floor fuel load assessment in the region and areas with similar characteristics and may be instrumental in generating fuel maps,fire management improvement and better C storage assessment by vegetation type,among many other uses. | Jose A.Vega Stefano Arellano-Perez Juan Gabriel Alvarez-Gonzalez Cristina Fernandez Enrique Jimenez Pedro Cuinas Jose María Fernandez-Alonso Daniel J.Vega-Nieva Fernando Castedo-Dorado Cecilia Alonso-Rego Teresa Fontúrbel Ana Daría Ruiz-Gonzalez | 2022 | Forest Ecosystems2022，9，6： | 0 |
| 6 | Biocomposites Based on Thermoplastic Starch and Granite Sand Quarry Waste显示文摘Granite stone is a by-product of the rock crushing manufacturing.An industrial waste in powder form that causes health problems and environmental pollution.Fine particles fraction can be used as a partial replacement of sand in concrete manufacture.In this work,an alternative exploitation of this waste fraction is proposed.Granite sand(GS)with particles mean size of ~1μm was employed as thermoplastic starch(TPS)filler at different concentrations.Biocomposites were obtained by melt-mixing and thermo-compression,achieving translucent and easy to handle films.A good GS dispersion within the matrix was evidenced by SEM.Mineral presence induced a shift of starch’s melting point to higher values and a better thermal resistance.TPS UV absorption capacity was increased ~90% by GS addition.An increment in TPS Young’s modulus and maximum tensile stress of 5 and 3 times,respectively was observed by adding 5%w/w GS. | María G.Passaretti Mario D.Ninago Cecilia I.Paulo Horacio A.Petit Edgardo F.Irassarc Daniel A.Vega Marcelo A.Villar Olivia V.López | 2019 | Journal of Renewable Materials2019，7，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员