1,721,030 research outputs found
New Image Processing of the Turin Shroud Scourge Marks
No full textAbstract
A preliminary study presented at Columbus Conference on the Turin Shroud in 2008 identified three different types of scourge marks on the body image. By means of a new kind of image processing, the characteristics of the three marks have been better highlighted and the results are also verified through comparison with signs experimentally produced by different kinds of whips on a proper carton paper. It experimentally results that imprints similar to those observed on the Turin Shroud can be obtained if at least two whips are used: a bunch of flexible rods and a flagrum
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
N leached from a sandy soil amended with urea, liquid digestate, struvite and NH4-enriched chabazite zeolite-tuff
No full textN leached from a sandy soil amended with urea, liquid digestate, struvite and NH4-enriched
chabazite zeolite-tuf
N leached from a sandy soil amended with urea, liquid digestate, struvite and NH4-enriched chabazite zeolite-tuff
No full textMultiple subduction-related metasomatic pulses in mantle xenoliths from the Karioi volcano, North Island, New Zealand
No full textNo abstract availabl
N leached from a sandy soil amended with urea, liquid digestate, struvite and NH4-enriched chabazite zeolite-tuff
No full textVariations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Amount and speciation of N leached from a sandy soil fertilized with urea, liquid digestate, struvite and NH4-enriched chabazite zeolite-tuff
No full textThe large use and the bad management of fertilizers that are applied to soil for
improving crop production have dramatically impaired soil, water, and air quality.
To meet the requirements to reduce nitrogen (N) losses and all the related
negative impacts on the environment and food production, it is mandatory to
substitute or at least partially substitute the use of inefficient and unsustainable
fertilizers with more efficient alternatives. The aim of this paper was to address
the amount and speciation of the N released by a sandy soil fertilized with “slow-release
fertilizers” and traditional fertilizers (urea and liquid digestate) by means
of a series of column leaching experiments. The slow-release
alternatives were
represented by NH4-enriched
zeolitic tuff and struvite, both obtained by recovering
the N from liquid digestate. The treatments consisted of sandy soil fertilized
with (i) urea (U) (ii) liquid digestate (LD), (iii) NH4-enriched
zeolitic tuff (N-CHA)
and (iv) struvite (STRV). Eight different flushing events were performed
over 38 days, leachates were collected and analysed for total Kjeldahl N, organic-
N,
NH4
+-N,
NO3
−-N,
NO2
−-N
and pH. U and LD lost the majority of N within the
first 2 flushing events as organic N and NH4
+-N,
respectively. On the other hand,
STRV and N-CHA
lost less N over the whole course of the experiment and with
more balanced speciation. The mass balance outlined that after the experiment,
native soil N was mined in U and LD treatments while in N-CHA
and STRV
a fraction of N from the fertilizers was still present. The results showed a slow
release of N which can be used more efficiently in agricultural applications, minimizing
the N losses
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