1,294 research outputs found
The Italian populations of Viola pumila Chaix. Their ecological and genetic characterization for an integrated conservation strategy.
No full textThe Italian populations of Viola pumila Chaix. Their ecological and genetic characterization for an integrated conservation strategy
Buldrini F.1, Dallai D.1, Conte L.2, Del Prete C.1, Ferrari C.2
1 Dep. of Biology, University of Modena and Reggio Emilia
2 Dep. of Experimental Evolutionary Biology, University of Bologna
Viola pumila Chaix is an Eurasian species linked to large alluvial grasslands. Ecology and conservation problems of its Central European populations have been studied by Hölzel (2003), Eckstein & al. (2004, 2006, 2009) and Danihelka & al. (2009). In Italy, it grows only in 4 Po valley sites, in grasslands and fresh meadows regularly mown, along ditches and cultivated fields. These populations are peripheral with respect to the European distribution of the species. They contain a very low number of individuals in each site (max. 46) and are very distant and strictly isolated from the nearest populations of Central Europe. According to IUCN (2001), this species is critically endangered in Italy (Buldrini & Dallai, in press).
Since the best conservation strategy for endangered species implies a detailed knowledge of habitat requirements as well as of its genetic diversity, an ecological characterization of the 4 sites is in progress, by Ellenberg’s Indexes modified by Pignatti & al. (2005). Moreover, the genetic diversity of the Italian populations of the species will be evaluated through ISSR markers: semi-arbitrary anchored primers designed from tandem repeat motifs of microsatellites will be used to estimate the level and the distribution of genetic diversity and to provide suggestions for effective conservation programs.
A comparison between Italian populations and Central European ones will performed in the next stage of the research.
Eckstein R.L., Danihelka J., Hölzel N., Otte A. (2004), Acta Oecol. 25: 83–91
Eckstein R.L., Hölzel N., Danihelka J. (2006), Perspect. Pl. Ecol. Evol. Syst. 8: 45-66
Eckstein R.L., Danihelka J., Otte A. (2009), Biologia 64/1: 69-80
Danihelka J., Niklfeld H., Šípošová H. (2009), Preslia 81: 151-171
Hölzel N. (2003), Folia Geobot. 38: 281-298
Pignatti S., Menegoni P., Pietrosanti S. (2005), Braun-Blanquetia 39: 1-9
Zivilgesellschaft aus politiktheoretischer Perspektive
No full textSchade J. Zivilgesellschaft aus politiktheoretischer Perspektive. In: Groh K, Weinbach C, eds. Zur Genealogie des politischen Raums. Politische Strukturen im Wandel. Wiesbaden: VS-Verlag; 2005: 131-154
Study of B c + → J / ψ D s + and B c + → J / ψ D s ∗ + decays in pp collisions at √s = 13 TeV with the ATLAS detector
No full textA study of B+
c → J/ψD+
s and B+
c → J/ψD∗+
s decays using 139 fb−1 of integrated luminosity collected with the ATLAS detector from √
s = 13 TeV pp collisions
at the LHC is presented. The ratios of the branching fractions of the two decays to the
branching fraction of the B+
c → J/ψπ+ decay are measured: B(B+
c → J/ψD+
s
)/B(B+
c →
J/ψπ+) = 2.76 ± 0.47 and B(B+
c → J/ψD∗+
s
)/B(B+
c → J/ψπ+) = 5.33 ± 0.96. The ratio
of the branching fractions of the two decays is found to be B(B+
c → J/ψD∗+
s
)/B(B+
c →
J/ψD+
s
) = 1.93 ± 0.26. For the B+
c → J/ψD∗+
s decay, the transverse polarization fraction,
Γ±±/Γ, is measured to be 0.70 ± 0.11. The reported uncertainties include both the statistical and systematic components added in quadrature. The precision of the measurements
exceeds that in all previous studies of these decays. These results supersede those obtained
in the earlier ATLAS study of the same decays with √s = 7 and 8 TeV pp collision data. A
comparison with available theoretical predictions for the measured quantities is presented
Macronutrient intake and stomach cancer
No full textPurpose: This study examines the association between intake of selected macronutrients and the risk of stomach cancer in a Northern American population. Methods: Mailed questionnaires were completed between 1994 and 1997 in eight Canadian provinces by 1,181 incident, histologically confirmed cases of stomach cancer and 5,039 population controls. Information on nutrient intake was obtained using a food frequency questionnaire. Odds ratios (ORs) and the corresponding 95 % confidence intervals (CIs) were derived through unconditional logistic regression to adjust for potential confounders, including an estimate of total energy intake. Results: Intakes of total fat, saturated fat, and cholesterol were significantly associated with the risk of stomach cancer: The ORs for the highest versus the lowest quartile were 1.58 (95 % CI 1.13–2.20), 1.86 (95 % CI 1.37–2.52), and 1.75 (95 % CI 1.36–2.25), respectively. Total fiber was inversely associated with stomach cancer (p = 0.03). The positive associations with intake of total fat and saturated fat were apparently stronger in women, overweight or obese subjects, and ever smokers. Saturated fat was specifically associated with increased risk of gastric cardia cancer, with an OR of 3.31 (95 % CI 1.48–7.43). Conclusions: A diet high in saturated fat appears to increase the risk of stomach cancer, particularly among obese subjects and for gastric cardia cancer
Boettgeria jensi Neubert & Groh 1998
No full textjensi, Arinia Maassen, 2001 Arinia jensi Maassen, 2001: 56 (figs 5, 14–15). Gastropoda, Diplommatinidae Paratype: MZSP 95939. Locality: Peninsular Malaysia, Kelantan, along the right side of road 8 from Gua Musang to Machamg at km 24.9; 04°55'022'' N, 102°06'934'' E. Collectors: J. and C. Hemmen. Preservation: Dry. Remarks: Former Jens Hemmen Collection. The specimen listed above is a remainder of a 250-specimen paratype lot deposited by the author in Hemmen’s collection (Maassen 2001).Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 31, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/384012
Arinia jensi Maassen 2001
No full textjensi, Boettgeria Neubert & Groh, 1998 Boettgeria (Boettgeria) jensi Neubert & Groh, 1998: 159–162 (fig. 3). Gastropoda, Clausiliidae Paratype: MZSP 95947 (Fig. 5 O–P). Locality: Portugal, Madeira Archipelago, Desertas Island, 29–31 Jul. 1985. Collectors: J. Gerber, K. Groh and J. Hemmen. Preservation: Dry. Remarks: Former Jens Hemmen Collection. The specimen listed above is a remainder of a 17-specimen paratype lot deposited by Neubert & Groh in Hemmen’s collection.Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 33, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/384012
Dietary cholesterol intake and cancer
No full textBackground: This study assesses the association between dietary cholesterol intake and the risk of various cancers. Patients and methods: Mailed questionnaires were completed between 1994 and 1997 in eight Canadian provinces by 1182 incident histologically confirmed cases of the stomach, 1727 of the colon, 1447 of the rectum, 628 of the pancreas, 3341 of the lung, 2362 of the breast, 442 of the ovary, 1799 of the prostate, 686 of the testis, 1345 of the kidney, 1029 of the bladder, 1009 of the brain, 1666 non-Hodgkin's lymphomas (NHL), 1069 leukemia and 5039 population controls. Information on dietary habits and nutrition intake were obtained using a food frequency questionnaire, which provided data on eating habits 2 years before the study. Odds ratios (ORs) were derived by unconditional logistic regression to adjust for total energy intake and other potential confounding factors. Results: Dietary cholesterol was positively associated with the risk of cancers of the stomach, colon, rectum, pancreas, lung, breast (mainly postmenopausal), kidney, bladder and NHL: the ORs for the highest versus the lowest quartile ranged from 1.4 to 1.7. In contrast, cholesterol intake was inversely associated with prostate cancer. Conclusions: Our findings add to the evidence that high cholesterol intake is linked to increased risk of various cancers. A diet low in cholesterol may play a role in the prevention of several cancers
Dietary transfatty acids and cancer risk
No full textThis study assesses the association between dietary transfatty acid (TFA) intake and the risk of selected cancers. Mailed questionnaires were completed between 1994 and 1997 in eight Canadian provinces by 1182 incident, histologically confirmed cases of the stomach, 1727 of the colon, 1447 of the rectum, 628 of the pancreas, 3341 of the lung, 2362 of the breast, 442 of the ovary, 1799 of the prostate, 686 of the testis, 1345 of the kidney, 1029 of the bladder, 1009 of the brain, 1666 non-Hodgkin's lymphomas, 1069 leukemias, and 5039 population controls. Information on dietary habits and nutrition intake was obtained using a food frequency questionnaire, which provided data on eating habits 2 years before the study. Odds ratios (OR) and 95% confidenc530e intervals (CI) were derived by unconditional logistic regression to adjust for total energy intake and other potential confounding factors. Dietary TFA were positively associated with the risk of cancers of the colon (OR: 1.38 for the highest vs. the lowest quartile), breast in premenopause (OR: 1.60), and prostate (OR: 1.42). There were a borderline association for pancreas cancer (OR: 1.38; P=0.06). No significant association was observed for cancers of the stomach, rectum, lung, ovary, testis, kidney, bladder, brain, non-Hodgkin's lymphomas, and leukemia, although the ORs for the highest quartile were above unity for all neoplasms considered, except testis. Our findings add evidence that high TFA is associated with an increased risk of various cancers. Thus, a diet low in transfat may play a role in the prevention of several cancers
Aquileia and its urban development in the light of recent and ongoing research
No full textOur knowledge regarding the urban planning of Aquileia and its development has significantly increased since the publication of the last comprehensive overview of this subject in the volume Aquileia moenibus et portu celeberrima in 2009. Indeed, over the previous decade, several new research projects have shone new light on the urban planning, func- tion, and development of Aquileia, adding much new data and evidence to our overall knowledge of the ancient colony and Adriatic emporium. This paper presents the most significant results of recent investigations, providing a first updated overview of the city’s urban development, focusing and commenting on the following themes: city walls and town planning, Forum and river port, entertainment and recreational buildings (theatre, amphitheatre and Imperial baths), commercial areas and complexes, private spaces and townhouses
Dietary cholesterol intake and cancer
No full textBackground: This study assesses the association between dietary cholesterol intake and the risk of various cancers. Patients and methods: Mailed questionnaires were completed between 1994 and 1997 in eight Canadian provinces by 1182 incident histologically confirmed cases of the stomach, 1727 of the colon, 1447 of the rectum, 628 of the pancreas, 3341 of the lung, 2362 of the breast, 442 of the ovary, 1799 of the prostate, 686 of the testis, 1345 of the kidney, 1029 of the bladder, 1009 of the brain, 1666 non-Hodgkin's lymphomas (NHL), 1069 leukemia and 5039 population controls. Information on dietary habits and nutrition intake were obtained using a food frequency questionnaire, which provided data on eating habits 2 years before the study. Odds ratios (ORs) were derived by unconditional logistic regression to adjust for total energy intake and other potential confounding factors. Results: Dietary cholesterol was positively associated with the risk of cancers of the stomach, colon, rectum, pancreas, lung, breast (mainly postmenopausal), kidney, bladder and NHL: the ORs for the highest versus the lowest quartile ranged from 1.4 to 1.7. In contrast, cholesterol intake was inversely associated with prostate cancer. Conclusions: Our findings add to the evidence that high cholesterol intake is linked to increased risk of various cancers. A diet low in cholesterol may play a role in the prevention of several cancers
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