Seroprevalence and risk factors of Coxiella burnetii infection in cattle in northeast Algeria     

Menadi  Salah Eddine  Mura  Alessandra  Santucciu  Cinzia  Ghalmi  Farida  Hafsi  Fella  Masala  Giovanna 《Tropical animal health and production》2020,52(3):935-942

Tropical Animal Health and Production - A cross-sectional study was conducted to determine the seroprevalence and the risk factors associated with C. burnetii infection in cattle in the state of...  相似文献   

Computed tomographic and radiographic morphometric study of cardiac and coelomic dimensions in captive blue-fronted Amazon parrots (Amazona aestiva,Linnaeus, 1758) with varying body condition scores     

Gisele J. dos Santos  Jeana P. da Silva  Alícia G. Hippólito  Bárbara S. Ferro  Elton Luís R. Oliveira  Priscylla Tatiana C. G. Okamoto  Maria Lucia G. Lourenço  Vania Maria de Vasconcelos Machado  Sheila C. Rahal  Carlos R. Teixeira  Alessandra Melchert 《Anatomia, histologia, embryologia》2020,49(2):299-306

This study aimed to assess radiographic and tomographic cardiac parameters, including width and length of the heart, and the ratio of heart width to coelom width of blue-fronted Amazon parrots (Amazona aestiva) with varying body condition scores. Thirty-five captive birds were included in the study and were allocated into one of three groups according to their respective body condition score: lean, ideal and obese. No differences were observed among the groups with regard to radiographic and tomographic measurements. Computed tomography enabled better identification of the structures of the cardiovascular system without interference from the overlying structures of the celomatic cavity observed in radiographic images. However, radiographic examinations should still be considered the standard screening method to identify cardiac alterations, such as increased or reduced organ dimensions. Standardizing the techniques and measurements performed in this study may serve as a basis for further research in the field.  相似文献   

Impacts of the nitrogen application on productivity and nutrients concentrations of the corn-Congo grass intercropping system in the dry season     

Karina Batista  Alessandra Aparecida Giacomini  Luciana Gerdes  Waldssimiler Teixeira De Mattos  Ivani Pozar Otsuk 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2013,63(7):567-577

ABSTRACT

The corn-grass intercropping system began to be used in the dry season, as it provides increased straw production for the no-tillage system. However, corn and grass are plants demanding in nitrogen. The corn cultivated in the dry season is called out-of-season corn in Brazil. The objective of this study was to evaluate the productivity and nutrients concentrations of out-of-season corn and Congo-grass intercropped in the no-tillage system, as a function of the nitrogen rates applied in sidedressing. The treatments were four nitrogen rates, 0, 30, 60 and 90?kg?ha^?1. The experimental design was randomised complete blocks with four replicates. The experimental period corresponded to the harvests of 2015 and 2016. There were evaluated: corn grain yield, dry mass production and nutrient concentration in the shoots of the plants intercropped. The evaluations were carried out at the physiological maturity stage of the corn and at the time of desiccation of the grass. Nitrogen increased grain yield and dry mass production of the plants intercropped. Nitrogen maximised the magnesium concentration in out-of-season corn and the nitrogen, calcium, magnesium and sulphur concentrations in Congo grass. Excess nitrogen promoted reduction of the phosphorus in the Corn-Congo grass intercropping system in the dry season.  相似文献   

New monoterpene glycosides from Paeonia lactiflora     

Braca A  Kiem PV  Yen PH  Nhiem NX  Quang TH  Cuong NX  Minh CV 《Fitoterapia》2008,79(2):117-120

Three new monoterpene glycosides named 4-O-methyl-paeoniflorin (1), isopaeoniflorin (2), and isobenzoylpaeoniflorin (3), together with two known monoterpene glycosides, paeoniflorin (4) and benzoylpaeoniflorin (5), were isolated from the roots of Paeonia lactiflora. Their structures were established on the basis of spectral and chemical evidence.  相似文献   

Chemical composition and antimicrobial activity of Momordica charantia seed essential oil   总被引：1，自引：0，他引：1  

Braca A  Siciliano T  D'Arrigo M  Germanò MP 《Fitoterapia》2008,79(2):123-125

The essential oil obtained from the seeds of Momordica charantia was analyzed by GC/MS. Twenty-five components, representing 90.9% of the oil, were identified. The main constituents were trans-nerolidol, apiole, cis-dihydrocarveol and germacrene D. Furthermore, the oil was tested for its antibacterial and antifungal activities. Staphylococcus aureus was found to be the most sensitive microorganism with MIC values <500 microg/ml.  相似文献   

Bioactive Compounds in Wild Asteraceae Edible Plants Consumed in the Mediterranean Diet     

Panfili  Gianfranco  Niro  Serena  Bufano  Annarita  D’Agostino  Annacristina  Fratianni  Alessandra  Paura  Bruno  Falasca  Luisa  Cinquanta  Luciano 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(4):540-546

Plant Foods for Human Nutrition - Three wild edible plant species belonging to the Asteraceae family, Crepis vesicaria L. (s.l.), Sonchus asper (L.) Hill s.l., and Sonchus oleraceus L., usually...  相似文献   

Marine Anticancer Agents: An Overview with a Particular Focus on Their Chemical Classes     

Marilia Barreca  Virginia Span  Alessandra Montalbano  Mercedes Cueto  Ana R. Díaz Marrero  Irem Deniz  Ayegül Erdoan  Lada Luki&#x; Bilela  Corentin Moulin  Elisabeth Taffin-de-Givenchy  Filippo Spriano  Giuseppe Perale  Mohamed Mehiri  Ana Rotter  Olivier P. Thomas  Paola Barraja  Susana P. Gaudêncio  Francesco Bertoni 《Marine drugs》2020,18(12)

The marine environment is a rich source of biologically active molecules for the treatment of human diseases, especially cancer. The adaptation to unique environmental conditions led marine organisms to evolve different pathways than their terrestrial counterparts, thus producing unique chemicals with a broad diversity and complexity. So far, more than 36,000 compounds have been isolated from marine micro- and macro-organisms including but not limited to fungi, bacteria, microalgae, macroalgae, sponges, corals, mollusks and tunicates, with hundreds of new marine natural products (MNPs) being discovered every year. Marine-based pharmaceuticals have started to impact modern pharmacology and different anti-cancer drugs derived from marine compounds have been approved for clinical use, such as: cytarabine, vidarabine, nelarabine (prodrug of ara-G), fludarabine phosphate (pro-drug of ara-A), trabectedin, eribulin mesylate, brentuximab vedotin, polatuzumab vedotin, enfortumab vedotin, belantamab mafodotin, plitidepsin, and lurbinectedin. This review focuses on the bioactive molecules derived from the marine environment with anticancer activity, discussing their families, origin, structural features and therapeutic use.  相似文献   

Genome-wide in silico analysis of SOD genes in common bean (Phaseolus vulgaris L.)     

Silva  Silviany Angelica Fernandes  Silva  Fláive Loyze Baldassarini  Ribas  Alessandra Ferreira  de Souza  Silvia Graciele Hülse  dos Santos  Tiago Benedito 《Journal of Crop Science and Biotechnology》2020,23(3):241-251

Journal of Crop Science and Biotechnology - Superoxide dismutases (SODs) are a group of enzymes that play essential roles in catalyzing the dismutation of superoxide radicals to protect cells from...  相似文献   

The impact of external knowledge sourcing on innovation outcomes in rural and urban businesses in the U.S.     

Kathryn R. Dotzel  Alessandra Faggian 《Growth and change》2019,50(2):515-547

This paper examines the relationship between external knowledge sourcing and a diverse set of innovation outcomes in rural and urban establishments in the U.S. Existing studies in the broader knowledge management literature principally examine firms in a single industry, overwhelmingly rely on patent data to proxy for innovation, and cannot account for the innovations of businesses in rural American markets. By addressing these limitations using data from the 2014 Rural Establishment Innovation Survey of the USDA's Economic Research Service, this research provides novel insights into how externally acquired knowledge by American establishments may support innovation. Results of the analysis suggest that external knowledge sourcing may specifically promote product, process, and green innovation in U.S. firms. While collective results when external sources of information are divided by industry orientation fail to show that sources outside of a firm's industry play a dominant role in the innovation processes of American establishments in general, findings provide evidence for an outsized impact of these relationships within rural establishments specifically and suggest that external knowledge sourcing from extra‐industry organizations is most critical for promoting successful innovation in rural firms. Results additionally indicate that knowledge sourcing from non‐local organizations may be more important for supporting innovation in rural compared to urban markets.  相似文献   

Changes in the composition of native root arbuscular mycorrhizal fungal communities during a short-term cover crop-maize succession     

Alessandra Turrini  Cristiana Sbrana  Luciano Avio  Ezekiel Mugendi Njeru  Gionata Bocci  Paolo Bàrberi  Manuela Giovannetti 《Biology and Fertility of Soils》2016,52(5):643-653

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