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Wheat ear carbon assimilation and nitrogen remobilization contribute significantly to grain yield

Journal of Integrative Plant Biology 2016年第11期58卷 914-926页

作者： Bangwei Zhou Maria Dolores Serret Abdelhalim Elazab jordi Bort Pie José Luis Araus Iker Aranjuelo álvaro Sanz-Sáez Key Laboratory of Vegetation Ecology Ministry of EducationInstitute of Grassland ScienceNortheast Normal University Unit of Plant Physiology Faculty of BiologyUniversity of Barcelona Agrobiotechnology Institute Public University of Navarra-CSIC-Navarra GovernmentArrosadia Campus Department of Plant Biology University of the Basque Country Pharmacy Faculty

The role of wheat ears as a source of nitrogen （N） and carbon （C） in the grain filling process has barely been studied. To resolve this question, five wheat genotypes were labeled with 15N-enriched nutrient solution. N remobilization and absorption were estimated via the nitrogen isotope composition of total organic matter and Rubisco. Gas exchange analyses showed that ear photosynthesis contributed substantially to grain filling in spite of the great loss of C due to respiration. Of the total kernel N, 64.7% was derived from the N acquired between sowing and anthesis, while the remaining 35.3% was derived from the N acquired between anthesis and maturity. In addition, 1.87 times more N was remobilized to the developing kernel from the ear than from the flag leaf. The higher yielding genotypes showed an increased N remobflization to the kernel compared to the lower yielding genotypes. In addition, the higher yielding genotypes remobilized more N from the ears to the kernel than the lower yielding genotypes, while the lower yielding genotypes remobilized more N from the flag leaf to the kernel. Therefore, the ears contribute significantly toward fulfilling C and N demands during grain filling.

关键词： Carbon accumulation ear grain yield nitrogenaccumulation Rubisco

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Physiological traits contributed to the recent increase in yield potential of winter wheat from Henan Province, China

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Journal of Integrative Plant Biology 2014年第5期56卷 492-504页

作者： Bangwei Zhou álvaro Sanz-Sáez Abdelhalim Elazab Tianmin Shen Rut Sánchez-Bragado jordi Bort Maria Dolors Serret José Luis Araus Unit of Plant Physiology Faculty of Biology University of Barcelona Henan Tianmin Seed Company Lankao County Department of Plant Biology University of Illinois Urbana-Champaign

This experiment aims to test the traits responsible for the increase in yield potential of winter wheat released in Henan Province, China. Seven established cultivars released in the last 20 years and three advanced lines were assayed. The results showed that grain yield was positively correlated with harvest index（HI）, kernel number per square meter, and aboveground biomass. In addition, the HI and aboveground biomass showed an increasing trend with the year of ***, we can conclude that bread wheat breeding advances during recent decades in Henan Province, China,have been achieved through an increase in HI, kernel number per square meter, and aboveground biomass. A higher d13C seems also to be involved in these advances, which suggests a progressive improvement in constitutive water use efficiency not associated with a trend towards lower stomatal conductance in the most recent genotypes. However, genetic advance Researchdoes not appear related to changes in photosynthesis rates on area basis when measured in the flag leaf or the spike,but only to a higher, whole‐spike photosynthesis. Results also indirectly support the concept that under potential yield conditions, the spike contributed more than the flag leaf to kernel formation.

关键词： Carbon isotopes grain yield net carbon exchange nitrogen content yield potential

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Predictive clinical features of cardioembolic infarction in patients aged 85 years and older

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Journal of Geriatric Cardiology 2019年第11期16卷 793-799页

作者： Ana Maria Carbajo-García Jonatan Cortés AdriàArboix Joan Massons Laura Díez Enric Vergés jordi Arboix-Alió Luís García-Eroles Cerebrovascular Division Department of NeurologyHospital Universitari del Sagrat CorUniversitat de BarcelonaBarcelonaCataloniaSpain Department of Sports Sciences Ramon Llull UniversityFPCEE BlanquernaBarcelonaCataloniaSpain Director d’Organitzaciói Sistemes d’Informació Gerència Territorial Metropolitana NordInstitut Catalàde la SalutBarcelonaCataloniaSpain

Objective To assess predictive clinical factors of cardioembolic infarction in very old patients(85 years of age and older).Methods Prospective hospital-based stroke registry("The Sagrat Cor Hospital of Barcelona Stroke Registry")is an acute-care teaching hospital in Barcelona,Catalonia,*** 956 first-ever cardioembolic stroke patients included in the stroke registry over a 24-year period,639 were younger than 85 years of age and 317 were 85 years or older(mean age:88.9 years).Demographics,clinical characteristics,risk factors and early outcome were *** of cardioembolic infarction in the oldest age group were assessed by multivariate *** In a logistic regression model based on demographics,risk factors,clinical features and complications,female gender(odds ratio[OR]=1.74,95%confidence interval[CI]:1.27–2.39),heart failure(OR=2.27,95%CI:1.46–3.56),altered consciousness(OR=1.76,95%CI:1.28–2.42),and infectious complications(OR=2.01,95%CI:1.39–2.91)were predictors of cardioembolic stroke in the oldest age *** contrast,heavy smoking,heart valve disease,hypertension,headache,early seizures,sensory deficit,and involvement of the posterior cerebral artery were independently associated with cardioembolic stroke in the younger *** Identification of a differential clinical profile of cardioembolic stroke between patients aged 85 years or more and those younger than 85 years helps clinicians to the optimal management of ischemic infarction in the oldest segment of the population.

关键词： Cardioembolic stroke Clinical features Ischemic infarction Stroke Very old patients

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Size effects on the tensile strength and fracture toughness of granitic rock in different tests

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第9期15卷 2179-2192页

作者： Ignacio Pérez-Rey Andrea Muñoz-Ibáñez Manuel A.González-Fernández Mauro Muñiz-Menéndez Miguel Herbón Penabad Xian Estévez-Ventosa jordi Delgado Leandro RAlejano Laboratorio de Geotecnia CEDEXMadridSpain CINTECX GESSMin GroupDepartment of Natural Resources and Environmental EngineeringUniversidade de VigoVigoSpain School of Civil Engineering Universidade da CoruñaA CoruñaSpain

This study investigates the tensile failure mechanisms in granitic rock samples at different scales by means of different types of *** do that,we have selected a granitic rock type and obtained samples of different sizes with the diameter ranging from 30 mm to 84 *** samples have been subjected to direct tensile strength(DTS)tests,indirect Brazilian tensile strength(BTS)tests and to two fracture toughness testing *** DTS and fracture toughness were found to consistently grow with sample size,this trend was not clearly identified for BTS,where after an initial grow,a plateau of results was *** is a rather complete database of tensile related properties of a single rock *** if similar databases are rare,the obtained trends are generally consistent with previous scatter and partial experimental ***,different observations apply to different types of rocks and experimental *** differences in variability and mean values of the measured parameters at different scales are critically analysed based on the heterogeneity,granular structure and fracture mechanics *** potential relations between parameters are revised and an indication is given on potential sample sizes for obtaining reliable *** this database with different types of rocks is thought to be convenient to advance towards a better understanding of the tensile strength of rock materials.

关键词： Size effect Tensile strength Fracture toughness Granite Finite fracture mechanics

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Use of a selective enzymatic debridement agent(Nexobrid■)for wound management:Learning curve

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World Journal of Dermatology 2017年第2期6卷 32-41页

作者： Ricardo Palao Jorge Aguilera-Sáez jordi Serracanta Jose Manuel Collado Bruce Patrik Dos Santos Juan Pedro Barret Plastic Reconstructive and Burns Unit ServiceVall d'Hebron University Hospital

AIM To evaluate the efficacy of Nexobrid~? in the initial management of burns and lessons learned with the *** From January 27^(th) 2015 until January 25^(th) 2016, 25 patients aged between 18-94 years old with deep partial and full thickness burns were treated with Nexobrid~? covering 1%-30% of their total body surface area(TBSA). The debridement was applied in the first 96 h post-injury following the protocol suggested for Nexobrid~?. In patients with burns of more than 15% TBSA a second application of Nexobrid~? was performed. After the removal of the product-4 h post application and after a 2 h period of wet dressing-we used several products to cover the wound like Suprathel~?, Biobrane~?, Mepitel~? with wet dressing, silver sulphadiazine 1% cream, and in some cases even autografts. We treated patients with inhalation injury as well. All the procedures were done under deep sedation, regional blocks in extremities or general anaesthesia in the intensive care unit room or in the operating *** After these first 25 cases, we have observed that patients with partial thickness burns treated with Nexobrid~?, experienced great benefits in the reduction of the need for autografting compared with the standard of care. This isbecause after selective enzymatic debriding of the burn scar we can distinguish different wound beds, which can coexist in the same patient, and we also managed to associate each one to its ability to epithelize. In major burns, besides the improvement in wound healing, we observed an important improvement in their general state. This may be because SIRS significantly improved through a bloodless debridement of necrotic tissue, decreasing the requirements of vasoactive drugs and fluid resuscitation. Circumferential burns also benefited from enzymatic debridement, observing a decrease in the number of compartment syndromes and the need for escharotomies. At present, we have not observed a positive effect in the evolution and o

关键词： Burns Eschar Debridement Enzymatic debridement Wound bed Nexobrid■ Epithelialization Dermis preservation Autograft

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