Synthesis and insecticidal activity of 3-(haloalkyl-1,3-dienyl)-2,2-dimethylcyclopropanecarboxylates     

Enrico Bosone  Francesco Corda  Franco Gozzo  Augusto Menconi  Paolo Piccardi  Vincenzo Caprioli 《Pest management science》1986,17(6):621-630

New 2,2-dimethylcyclopropanecarboxylic acids bearing halogenated 1,3-alkadienyl substituents at position 3 of the cyclopropane ring were synthesised and the insecticidial activities of their 3-phenoxybenzyl and α-cyano-3-phenoxybenzyl esters against housefly (Musca domestica), Colorado potato beetle (Leptinotarsa decemlineata) and Egyptian cotton leafworm (Spodoptera littoralis) were determined. The activity of these compounds varied according to the relative position of the halogen substituents on the diene chain. The observed changes of activity with the structure of the side chain are discussed in terms of the coplanarity of the conjugated double bonds.  相似文献   

Evidence of fish and human pathogens associated with doctor fish (Garra rufa,Heckel, 1843) used for cosmetic treatment     

Enrico Volpe  Luciana Mandrioli  Francesca Errani  Patrizia Serratore  Emanuele Zavatta  Antonella Rigillo  Sara Ciulli 《Journal of fish diseases》2019,42(12):1637-1644

Doctor fish (Garra rufa, Heckel, 1843) are increasingly used for cosmetic treatment raising particular concerns regarding the potential transmission of infections to clients. Investigations of microbial causes undertaken in two outbreaks of mortality among G. rufa used for cosmetic treatment revealed the presence of multiple bacteria, including both fish and human pathogens such as Aeromonas veronii, A. hydrophila, Vibrio cholerae, Shewanella putrefaciens, Mycobacterium marinum and M. goodii. This range of bacteria indicates an intense microbial proliferation involving multiple pathogens, most likely induced by the poor health condition of the fish. Most of the detected pathogens are well‐known agents of zoonosis. Indeed, M. goodii is an emerging nosocomial human pathogen that has never been detected in fish to date, nor in other animals. This first detection of M. goodii associated with fish infection points out a new zoonotic potential for this pathogen. These findings point out that handling, poor environmental conditions and the presence of fish pathogens, that can compromise the immune system of fish, can result in a mixed microbial proliferation and increase the spread of waterborne bacteria, including zoonosis agents. Accordingly, the microbiological surveillance of fish used for cosmetic treatment is extremely important, particularly in association with mortality outbreaks.  相似文献   

USE OF MAGNETIC RESONANCE IMAGING FOR DIAGNOSIS OF A SPINAL TUMOR IN A CAT     

Roberto M.  Asperio  DVM  Pasquina  Marzola  PhD  Enrico  Zibellini  DVM  William  Villa  DVM  Andrea  Sbarbati  MD  PhD  Francesco  Osculati  MD  PhD  Flaminio  Addis  DVM  PhD 《Veterinary radiology & ultrasound》1999,40(3):267-270

Magnetic resonance imaging was used to identify a spinal mass at the level of the 6th-7th cervical vertebral body in a cat. The MRI images were most consistent with the presence of an intradural, extramedullary meningioma that was confirmed by subsequent histological examination.  相似文献   

Diagnostic value of cytologic examination of gastrointestinal tract tumors in dogs and cats: 83 cases (2001-2004)     

Bonfanti U  Bertazzolo W  Bottero E  De Lorenzi D  Marconato L  Masserdotti C  Zatelli A  Zini E 《Journal of the American Veterinary Medical Association》2006,229(7):1130-1133

OBJECTIVE: To determine results of cytologic examination of fine-needle aspirates and impression smears of gastrointestinal tract tumors in dogs and cats. DESIGN: Retrospective case series. ANIMALS: 38 dogs and 44 cats with histologically confirmed gastrointestinal tract tumors. PROCEDURES: Results of cytologic examination of fine-needle aspirates (n = 67) or impression smears (31) were compared with the histologic diagnosis, and extent of agreement was classified as complete, partial, none, or undetermined. RESULTS: For 48 of the 67 (72%) fine-needle aspirates, there was complete or partial agreement between the cytologic and histologic diagnoses. For 12 (18%) aspirates, the extent of agreement could not be determined because the cytologic specimen was considered unsatisfactory. For 29 of the 31 (94%) impression smears, there was complete agreement between the cytologic and histologic diagnoses, and for 2 (6%), there was partial agreement. None of the impression smears were considered unsatisfactory. Proportion of samples with complete agreement and proportion of samples with complete or partial agreement were significantly higher for impression smears than for fine-needle aspirates. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggest that there was moderate agreement between results of cytologic examination of fine-needle aspirates from dogs and cats with gastrointestinal tract neoplasia and the definitive histologic diagnosis. The agreement between results of cytologic examination of impression smears and the histologic diagnosis appeared to be higher.  相似文献   

Growth of Incumbent Firms and Entrepreneurship in Vietnam     

Enrico Santarelli  Hien Thu Tran 《Growth and change》2012,43(4):638-666

This paper analyzes the relationship between the performance of incumbent firms and the net entry of new firms by combining various theoretical views of entrepreneurship. Different regression models to treat dynamics and endogeneity issues are applied to test the research hypothesis with regional micro‐data for 61 Vietnamese provinces from 2000 to 2008. The main finding is that net entry is associated with the performance of incumbent firms and the overall performance of the economy. Incumbents' growth and gross domestic product growth induce changes in the existing production system and stimulate the creation of an economic environment more favourable to new firm formation. Consistent with the hypotheses put forward within the “knowledge spillover,” the “error‐correction,” and other approaches, incumbents may generate new entrepreneurial opportunities not only for themselves but also for the whole society.  相似文献   

Landscape agronomy: a new field for addressing agricultural landscape dynamics   总被引：1，自引：0，他引：1  

Marc Beno?t  Davide Rizzo  Elisa Marraccini  Anna Camilla Moonen  Mariassunta Galli  Sylvie Lardon  Hélène Rapey  Claudine Thenail  Enrico Bonari 《Landscape Ecology》2012,27(10):1385-1394

Landscape dynamics increasingly challenge agronomists to explain how and why agricultural landscapes are designed and managed by farmers. Nevertheless, agronomy is rarely included in the wide range of disciplines involved in landscape research. In this paper, we describe how landscape agronomy can help explain the relationship between farming systems and agricultural landscape dynamics. For this, we propose a conceptual model of agricultural landscape dynamics that illustrates the specific contribution of agronomy to landscape research. This model describes the relationship between three elements: farming practices, landscape patterns and natural resources. It can stimulate agronomists to deal with research issues in agricultural landscape dynamics and enhance the interdisciplinary integration of farming systems in wider landscape research. On these premises, we discuss the main research issues that will benefit from an active involvement of agronomy, to understand, but also to assess landscape dynamics and to design relevant decision support systems.  相似文献   

Evidences of drought stress as a predisposing factor to Scots pine decline in Valle d’Aosta (Italy)     

Giorgio Vacchiano  Matteo Garbarino  Enrico Borgogno Mondino  Renzo Motta 《European Journal of Forest Research》2012,131(4):989-1000

Scots pine (Pinus sylvestris L.) forests of many inner Alpine valleys have recently displayed a quick loss of vitality. A decline disease has been suggested as the cause, with drought as the main predisposing factor and the additional contribution of biotic agents inciting tree dieback. This study is focused on Valle d’Aosta, a dry, inner-Alpine region in NW Italy. We inferred vitality changes between years 2000 and 2007 by computing reductions in enhanced vegetation index (EVI). Image differencing was carried out on pre-processed Moderate Resolution Imaging Spectroradiometer (MODIS) imagery taken in late springtime and validated against ancillary ground truth. We: (1) tested whether EVI reductions in Scots pine forests were significantly higher than those of a control species and of a wetter region for the same species, (2) analyzed decline incidence as a function of site and topographic variables, and (3) assessed the relative influence of site and stand structure on decline probability by means of path analysis. Mean EVI in the study area increased due to an early onset of the 2007 growing season. Nevertheless, the incidence of decline was 6.3% and significantly greater for Scots pine than the control species and site. Low-elevation, northerly exposed sites exhibited the highest incidence of decline. Path analysis suggested that the most important determinants of decline probability were slope, solar radiation, and stand sparseness.  相似文献   

Impact of blood storage duration on hematologic,blood gas,biochemical, and oxidative stress variables in sheep undergoing allogeneic blood transfusions     

Rejane S. Sousa  Antonio H. H. Minervino  Francisco Leonardo C. Oliveira  Carolina Akiko Sato C. Araújo  Frederico Augusto M. L. Rodrigues  Janayna Larissa R. Zaminhan  Rodolfo G. Vale  Marcondes D. Tavares  Clara S. Mori  Valéria V. de Paula  Enrico L. Ortolani  Raimundo A. Barrêto Júnior 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2020,49(4):545-556

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Upper digestive tract abnormalities in dogs with chronic idiopathic lymphoplasmacytic rhinitis     

Paola Gianella  Silvia Roncone  Ugo Ala  Enrico Bottero  Federica Cagnasso  Giulia Cagnotti  Claudio Bellino 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(5):1845-1852

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Pre-Clovis mastodon hunting 13,800 years ago at the Manis site, Washington     

Waters MR  Stafford TW  McDonald HG  Gustafson C  Rasmussen M  Cappellini E  Olsen JV  Szklarczyk D  Jensen LJ  Gilbert MT  Willerslev E 《Science (New York, N.Y.)》2011,334(6054):351-353

The tip of a projectile point made of mastodon bone is embedded in a rib of a single disarticulated mastodon at the Manis site in the state of Washington. Radiocarbon dating and DNA analysis show that the rib is associated with the other remains and dates to 13,800 years ago. Thus, osseous projectile points, common to the Beringian Upper Paleolithic and Clovis, were made and used during pre-Clovis times in North America. The Manis site, combined with evidence of mammoth hunting at sites in Wisconsin, provides evidence that people were hunting proboscideans at least two millennia before Clovis.  相似文献