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| 1 | 腐植酸对黄瓜植株生长的影响涉及与硝酸盐浓度有关的细胞分裂素、多胺、矿质营养素浓度在植株根系和芽中的变化显示文摘许多研究报道腐植酸类物质能够促进不同环境下的幼苗栽培物的生长。然而对腐植酸促进植物生长的作用机理,科学工作者却知之甚少。腐植酸类物质对植物幼苗的影响涉及根质膜H+-ATP酶活性及根系和芽中硝酸根分布的主要作用,反过来,导致某些细胞分裂素,多聚胺与脱落酸根浓度的变化,从而促进新幼苗生长。这一观点,通过现阶段的试验可以得出。试验结果表明,植物根系所富集的腐植酸能显著增加植物幼苗的生长,这与植物根系H+-ATP酶活性增强有关,这种活性表现在植物幼芽中硝酸盐浓度的增加,根系浓度降低。这些作用与细胞分裂素和多胺物质的浓度在植物幼芽中显著提高是相伴随的,与植物根系浓度降低有关。同样地,多种细胞分裂素在植物幼芽和根系分布的变化与多种矿物营养素在植物幼芽和根系分布的显著变化是协调一致的。试验结果表明,腐植酸对黄瓜幼苗生长的促进作用与硝酸根的浓度直接有关,而硝酸根浓度的变化又影响了细胞分裂素和多胺物质在植物幼苗中的富集。 | Vero nica Mora Eva Bacaicoa Angel-Maria Zamarreo Elena Aguirre Maria Garnica Marta Fuentes Jose-Maria Garc a-Mina 张世万 周霞萍 | 2012 | 腐植酸2012，，2： | 8 |
| 2 | Predictive factors for mortality in Fournier’s gangrene: A series of 59 cases显示文摘 | Andrés García Marín Fernando Turégano Fuentes Marta Cuadrado Ayuso Juan Antonio Andueza Lillo Juan Carlos Cano Ballesteros Mercedes Pérez López | 2014 | Cirugía Espa?ola (English Edition)2014，，： | 1 |
| 3 | The usefulness of UV–visible and fluorescence spectroscopies to study the chemical nature of humic substances from soils and composts显示文摘 | Marta Fuentes Gustavo González-Gaitano José M a García-Mina | 2006 | Organic Geochemistry2006，，12： | 1 |
| 4 | Complementary multianalytical approach to study the distinctive structural features of the main humic fractions in solution:Gray humic acid,brown humic acid,and fulvic acid显示文摘 | Baigorri Roberto Fuentes Marta Gonza lez-Gaiano Gustavo | 2009 | Agricultural and Food Chemiry2009，57，8： | 1 |
| 5 | The relationship between experientialavoidance and burnout syndrome in critical care nurses: Across-sectional questionnaire survey 显示文摘 | Marta Elena Losa Iglesias Ricardo Becerro de Bengoa Vallejo Paloma Salvadores Fuentes | 2010 | International Journal ofNursing Studies2010，47，： | 1 |
| 6 | Complementary muhian- alytical approach to study the distinctive structural features of the main humic Fractions in solution, gray humic acid, brown humic acid, and fulvic acid 显示文摘 | Baigorri Roberto Fuentes Marta Conzalez--Gaitano | | Journal of Agricuhural and Food Chemistry0，，： | 1 |
| 7 | The first record of dermochelyid turtles in the Eocene of Tierra del Fuego:new insights on the evolution of the Weddellian faunas显示文摘The Antarctic Paleogene marine fossil record has been the key to reconstructing the evolution of the Weddellian Sea and final dismemberment of Southern Gondwana.In this context,Eocene marine vertebrates from Seymour(Marambio)Island have provided valuable information.We present the first Eocene record of marine reptiles from the southern Atlantic Coast of South America.This corresponds to several postcranial turtle remains represented by a proximal end of the right humerus,three caudal and one thoracic vertebrae,a fragment of the left pubis,and ten ossicles of the dorsal carapace,coming from the Leticia Formation(late-mid Eocene)at Cabo Tiburones,Tierra del Fuego,Argentina.These materials show severalfeatures such as the size and general morphology of the humerus and vertebrae,and the presence of relatively small,irregular,smooth,and unkeeled ossicles,which allow us to assign them to Dermochelyidae indet.Dermochelyids are a cosmopolitan group ofcryptodiran turtles,registered from the late Cretaceous up to the recent,with some physiological-biological peculiarities(e.g.,endothermy and an exclusive jellyfish-based diet)and characterized by the presence of an osseous carapace formed by ossicles.The new finding from the Leticia Formation is an addition to the scarce and extremely fragmentary record of Eocene dermochelyids from the southern seas like those from the La Meseta and Submeseta formations(Antarctica)and the Waihao and Burnside formations(New Zealand).This new information allows us to discuss the presence of these turtles in such high latitudes in the past and its implication in the evolution of the Weddellian fauna. | Paula BONA Juliana STERLI Marcelo Saúl de la FUENTE Eduardo OLIVERO Marta S.FERNÁNDEZ Marcelo REGUERO | 2024 | Advances in Polar Science2024，35，1： | 0 |
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