169,944 research outputs found
Dental Microwear Textures of Modern Pigs from the Geophagy Hypothesis Experimentation
No full textRead me - Dental Microwear Textures of Modern Pigs from the Geophagy Hypothesis Experimentation
Margot LOUAIL and Gildas MERCERON
This dataset contains dental microwear surfaces on crushing (f9, f10, f12, f13) and shearing (f1, f3, f4) facets on upper decidual premolars either right (dex) or left (sen) of controlled fed pigs at the GenESI Station at the Lusignan-Rouillé INRAe station, Nouvelle Aquitaine, France. Details are given in Louail et al. (2025).
Here are provided three different files for each specimen:
• Plu files: these files are the raw data extracted from the Leica DCM8 “Trident” stored at the PALEVOPRIM lab. Plµx files are also provided.
• Mnt files: these files include all pre-treatments ran on the Plu files. We batch-applied with a template on the Plu files. In a few cases, we adjusted the settings manually. All changes were saved in the mnt.
• Sur files: these files are the final studiables issued the mnt files. This is the data on which we can extract texture parameters.
A template is provided:
• Zinv200+ 100: this template is applied on the plux files obtained from dental molds, meaning the plux reproduces an inversed relief of the dental texture. A Z inverse operator is included in the template. 200 makes reference to the extraction of a 200x200 µm area and 100 to a 100x100 µm area on which analysis are run. PDF version of the template is provided so one could generate the very same procedures using open free software.
Each facet was scanned using “TRIDENT”, a Leica DCM8 (Leica Microsystem) white light confocal profilometer housed at the PALEVOPRIM lab (CNRS and University of Poitiers; numerical aperture: 0.90; working distance: 0.9 mm; Leica Microsystems). Scanned surfaces were pre-treated under LeicaMap v. 8.0 (Leica Microsystems, Mountain technology; see Merceron et al., 2016 including SI for more details). A 200 × 200 μm (1551 × 1551 pixels) leveled area was generated from each surface and used for Dental Microwear Texture Analysis.
Louail, M., Souron, A., Ferchaud, S., Merceron, G., 2025. Controlled and natural geophagy: how mineral particle consumption impacts dental microwear textures in pigs. Journal of Archeological Method and Theory
Merceron, G., Ramdarshan, A., Blondel, C., Boisserie, J. R., Brunetiere, N., Francisco, A., ... & Pret, D. (2016). Untangling the environmental from the dietary: dust does not matter. Proceedings of the Royal Society B: Biological Sciences, 283(1838), 20161032.
https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2016.103
Merceron (C.), Ponce (L.) et Rossel (F.). — Aménagement particulier des états-limites : les troubles du comportement à caractère délictueux. Ps. fr., 1983, n° 2, pp. 156-163
No full textMerceron (C.), Ponce (L.) et Rossel (F.). — Aménagement particulier des états-limites : les troubles du comportement à caractère délictueux. Ps. fr., 1983, n° 2, pp. 156-163. In: Bulletin de psychologie, tome 40 n°379, 1987. Psychologie sociale. p. 330
The saber-toothed cat Homotherium latidens (Owen, 1846) from the lower Pleistocene locality Dafnero, Western Macedonia, Greece
No full textFIG. 2. — Homotherium latidens (Owen, 1846), Dafnero 3, Macedonia Greece, middle Villafranchian, humerus DFN3-153 in: A, anterior; B, posterior; C, lateral; D, medial views. Scale bar: 5 cm.Published as part of Koufos, George D., Kostopoulos, Dimitris S. & Merceron, Gildas, 2020, The saber-toothed cat Homotherium latidens (Owen, 1846) from the lower Pleistocene locality Dafnero, Western Macedonia, Greece, pp. 139-149 in Geodiversitas 42 (10) on page 142, DOI: 10.5252/geodiversitas2020v42a10, http://zenodo.org/record/382774
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
FIG. 2 in Feeding habits of the first European colobine, (Mammalia, Primates): evidence from a comparative dental microwear analysis with modern cercopithecids
No full textFIG. 2. — Dental facets nine of second molars for extant and extinct cercopithecids displaying dental microwear scars: A, Nasalis larvatus (Wurmb, 1787) (ZSM-1907-4023); B, Lophocebus albigena (Gray, 1850) (RMCA-83-006-0276); C, Chlorocebus aethiops (Linnaeus, 1758) (MNHN-CG-1972-309); D, Papio hamadryas hamadryas Linnaeus, 1758 (SNG-15831); E, Mesopithecus delsoni/ pentelicus (HD-340); F, M. pentelicus (NHMW-1998z77-14). Scale bars: 300 μm.Published as part of Merceron, Gildas, Koufos, George D. & Valentin, Xavier, 2009, Feeding habits of the first European colobine, (Mammalia, Primates): evidence from a comparative dental microwear analysis with modern cercopithecids, pp. 865-878 in Geodiversitas 31 (4) on page 874, DOI: 10.5252/g2009n4a865, http://zenodo.org/record/537954
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Ecology of two sympatric cervids from Spain: confronting data from stomach contents and dental microwear texture
No full textInternational audienceThe red deer, Cervus elaphus is characterized by a plastic diet that varies depending on resource availability in its habitat (Gebert and Verheyden-Tixier, 2001). On the other hand, the fallow deer Dama dama is reported to predominantly eat grass – and acorns whenever available whether in cold and humid or warm and dry habitats (Jackson, 1977, Azorit et al., 2012). The Spanish locality Luegar Nuevo (Fig.1) is characterized by a dry summer which constitutes a constraint season for the two sympatric cervid populations (Azorit et al., 2012). In this study, we focus on diet to explore the ecological relationships between the two populations under these extreme conditions. Dental microwear texture analysis (Scott et al., 2006), the study of the microscopic wear caused by food during mastication, has proven to be very efficient in deciphering both inter- and intra-specific variations in diet (Merceron et al., 2010). Efforts are focused on the shearing facet of the lower second molars (Fig.1). The results are compared with the rumen content analysis based on the very same specimens (Azorit et al., 2012). We show that the red deer are highly grazer (high anisotropy, low complexity), while the fallow deer combine intermediate complexity and lower anisotropy suggesting a more browsing diet (Fig.1). Notably, at the peak of the grass consumption for the two species (from May to August, before the occurrence of fruit in their diet), we highlight significant differences in the dental microwear signal. These results lead to the conclusion that conversely to the rumen contents, DMTA supports a more abrasive and tough alimentation (possibly herbaceous monocots) for the red deer compared with the fallow deer. In summary, the two species seem to occupy different micro-habitats with Dama in places where grasses are less abrasive and less tough than the place where Cervus grazes.Bibliography:[1] Azorit C, Tellado S, Oya A et al. (2012) Anim. Prod. Sci. 52: 720–727.[2] Calandra I, Merceron G (2016) Mammal Rev. in press.[3] Gebert C, Verheyden-Tixier H (2001) Mammal Rev. 31: 189–201.[4] Jackson J (1977) J. Zool. 181: 465–473.[5] Merceron G, Escarguel G, Angibault J-M et al. (2010). PLoS ONE 5: e9542.[6] Scott RS, Ungar P, Bergstrom TS et al. (2006) J. Hum. Evol. 51: 339–34
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