http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
First record of red macroalgae bloom in Southern Atlantic Brazil
Martins, Mateus S.,Massocato, Thais F.,Horta, Paulo A.,Barufi, Jose Bonomi The Korean Society of Phycology 2016 ALGAE Vol.31 No.1
Blooms of macroalgae have grown over the planet in recent decades as a possible result of eutrophication of coastal waters. Visually, a bloom forming can be identified by dominant presence of an organism at the expense of others. In mid-January 2014, a forming bloom of red algae was detected on the beach of Garopaba, Santa Catarina State, Brazil. This aroused the interest of tourists and locals as well as the scientific community. Thus, the objective of this study was to characterize and quantify the photosynthetic floating organisms contributing to this phenomenon. In addition, we qualitatively compared algal composition of the bloom to those deposited in the post-beach area and the adjacent rocky shore community. Five sampling points in random patches of floating material were defined. At each point, five replicates were taken with a cube of 32,768 cm<sup>3</sup>, resulting in a total of 25 samples. Samples were collected in the inner area enclosed by a PVC quadrate of about 900 cm² from the shore and the specimens found in post-beach zone (wrack). Twenty-four taxa of macroalgae were found in the bloom, with Aglaothamnion uruguayense as the dominance one. Ten taxa were found on shore. Only four taxa were found in the post-beach area. The biomass estimated for A. uruguayense in the floating material was 8.35 tons with an estimated area of 52,770 m<sup>2</sup> . It is possible that this huge biomass value of the bloom is related to the local nutrient intake, and our results reinforce the necessity of coastal integrative management initiatives.
First record of red macroalgae bloom in Southern Atlantic Brazil
Mateus S. Martins,Thaís F. Massocato,Paulo A. Horta,José Bonomi Barufi 한국조류학회I 2016 ALGAE Vol.31 No.1
Blooms of macroalgae have grown over the planet in recent decades as a possible result of eutrophication of coastal waters. Visually, a bloom forming can be identified by dominant presence of an organism at the expense of others. In mid-January 2014, a forming bloom of red algae was detected on the beach of Garopaba, Santa Catarina State, Brazil. This aroused the interest of tourists and locals as well as the scientific community. Thus, the objective of this study was to characterize and quantify the photosynthetic floating organisms contributing to this phenomenon. In addition, we qualitatively compared algal composition of the bloom to those deposited in the post-beach area and the adjacent rocky shore community. Five sampling points in random patches of floating material were defined. At each point, five replicates were taken with a cube of 32,768 cm3, resulting in a total of 25 samples. Samples were collected in the inner area enclosed by a PVC quadrate of about 900 cm2 from the shore and the specimens found in post-beach zone (wrack). Twenty-four taxa of macroalgae were found in the bloom, with Aglaothamnion uruguayense as the dominance one. Ten taxa were found on shore. Only four taxa were found in the post-beach area. The biomass estimated for A. uruguayense in the floating material was 8.35 tons with an estimated area of 52,770 m2. It is possible that this huge biomass value of the bloom is related to the local nutrient intake, and our results reinforce the necessity of coastal integrative management initiatives.
FINUDA Collaboration,Agnello, M.,Beer, G.,Benussi, L.,Bertani, M.,Bhang, H.C.,Bianco, S.,Bonomi, G.,Botta, E.,Bregant, M.,Bressani, T.,Bufalino, S.,Busso, L.,Calvo, D.,Camerini, P.,Caponero, M.,Cerell North-Holland Pub. Co 2007 Physics letters: B Vol.649 No.1
The inelastic charge exchange reaction (K<SUP>+</SUP>, K<SUP>0</SUP>) on <SUP>7</SUP>Li has been experimentally investigated close to threshold with the FINUDA spectrometer at the e<SUP>+</SUP>e<SUP>-</SUP> collider DAΦNE by searching for K<SUB>S</SUB><SUP>0</SUP> decays. It is the first time that this process has been studied at such low momentum. An upper limit of 2.0 mb (at 95% confidence level) has been measured for the total cross section.
Correlated Λd pairs from the K<sub>stop</sub><sup>-</sup>A->ΛdA<sup>'</sup> reaction
FINUDA Collaboration,Agnello, M.,Beer, G.,Benussi, L.,Bertani, M.,Bhang, H.C.,Bianco, S.,Bonomi, G.,Botta, E.,Bregant, M.,Bressani, T.,Bufalino, S.,Busso, L.,Calvo, D.,Camerini, P.,Caponero, M.,Cerell North-Holland Pub. Co 2007 Physics letters: B Vol.654 No.3
Correlated Λd pairs emitted after the absorption of negative kaons at rest K<SUB>stop</SUB><SUP>-</SUP>A->ΛdA<SUP>'</SUP> in light nuclei <SUP>6</SUP>Li and <SUP>12</SUP>C are studied. Λ-hyperons and deuterons are found to be preferentially emitted in opposite directions. The Λd invariant mass spectrum of <SUP>6</SUP>Li shows a bump whose mass is 3251+/-6 MeV/c<SUP>2</SUP>. The bump mass (binding energy), width and yield are reported. The appearance of a bump is discussed in the realm of the [K@?3N] clustering process in nuclei. The experiment was performed with the FINUDA spectrometer at DAΦNE (LNF).
New results on mesonic weak decay of <i>p</i>-shell <i>Λ</i>-hypernuclei
Agnello, M.,Andronenkov, A.,Beer, G.,Benussi, L.,Bertani, M.,Bhang, H.C.,Bonomi, G.,Botta, E.,Bregant, M.,Bressani, T.,Bufalino, S.,Busso, L.,Calvo, D.,Camerini, P.,Dalena, B.,De Mori, F.,D'Erasmo, G. Elsevier 2009 Physics letters: B Vol.681 No.2
<P><B>Abstract</B></P><P>The FINUDA experiment performed a systematic study of the charged mesonic weak decay channel of <I>p</I>-shell <I>Λ</I>-hypernuclei. Negatively charged pion spectra from mesonic decay were measured with magnetic analysis for the first time for <SUP>7</SUP><SUB><I>Λ</I></SUB>Li, <SUP>9</SUP><SUB><I>Λ</I></SUB>Be, <SUP>11</SUP><SUB><I>Λ</I></SUB>B and <SUP>15</SUP><SUB><I>Λ</I></SUB>N. The shape of the <SUP>π−</SUP> spectra was interpreted through a comparison with pion distorted wave calculations that take into account the structure of both hypernucleus and daughter nucleus. Branching ratios <SUB>Γ<SUP>π−</SUP></SUB>/<SUB>Γtot</SUB> were derived from the measured spectra and converted to <SUP>π−</SUP> decay rates <SUB>Γ<SUP>π−</SUP></SUB> by means of known or extrapolated total decay widths <SUB>Γtot</SUB> of <I>p</I>-shell <I>Λ</I>-hypernuclei. Based on these measurements, the spin-parity assignment 1/<SUP>2+</SUP> for <SUP>7</SUP><SUB><I>Λ</I></SUB>Li and 5/<SUP>2+</SUP> for <SUP>11</SUP><SUB><I>Λ</I></SUB>B ground-state are confirmed and a spin-parity 3/<SUP>2+</SUP> for <SUP>15</SUP><SUB><I>Λ</I></SUB>N ground-state is assigned for the first time.</P>
Correlated Λt pairs from the absorption of K<sup>-</sup> at rest in light nuclei
FINUDA Collaboration,Agnello, M.,Andronenkov, A.,Beer, G.,Benussi, L.,Bertani, M.,Bhang, H.C.,Bonomi, G.,Botta, E.,Bregant, M.,Bressani, T.,Bufalino, S.,Busso, L.,Calvo, D.,Camerini, P.,Caponero, M.,D North-Holland Pub. Co 2008 Physics letters: B Vol.669 No.3
Novel data from the K<SUB>stop</SUB><SUP>-</SUP>A absorption reaction in light nuclei <SUP>6,7</SUP>Li and <SUP>9</SUP>Be are presented. The study aimed at finding Λt correlations. Regardless of A, the Λt pairs are preferentially emitted in opposite directions. Reaction modeling predominantly assigns to the K<SUB>stop</SUB><SUP>-</SUP>A->Λt(N)A<SUP>'</SUP> direct reactions the emission of the Λt pairs whose yield is found to range from 10<SUP>-3</SUP> to 10<SUP>-4</SUP>/K<SUB>stop</SUB><SUP>-</SUP>. The experiment was performed with the FINUDA spectrometer at DAΦNE (LNF).