scholarly journals Análisis de áreas de actividad en el Grupo Guzmán de El Palmar, Campeche, México.

2021 ◽  
Vol 57 ◽  
pp. 55-88
Author(s):  
Xanti Sirani Ceballos Pesina ◽  
◽  
Agustín Ortiz Butrón ◽  
Luis Barba Pingarrón ◽  
Araceli Vázquez Villegas ◽  
...  
Keyword(s):  
Residue Analysis ◽  
Archaeological Site ◽  
Food Storage ◽  
Powerful Method ◽  
Chemical Residue ◽  
Group A ◽  
Specific Activities ◽  
Material Evidence

The chemical residue analysis is a powerful method to identify specific activities took place on the plaster floor of a building which was gradually abandoned without leaving artifacts. We analyzed four structures of the Guzmán Group, a plazuela group of the El Palmar archaeological site, which was a residential compound of non-royal elites who held the title of lakam. The results together with other material evidence suggest that lakamob were engaged in a wide variety of activities that include food storage, consumption and serving, as well as feasting, meeting, and ritual.

scholarly journals Dynamic Modelling Transformations for the Low Earth Orbit Satellite Particulate Environment

1991 ◽  
Vol 126 ◽  
pp. 37-40
Author(s):  
J.A.M. McDonnell ◽  
K. Sullivan ◽  
S.F. Green ◽  
T.J. Stevenson ◽  
D.H. Niblett
Keyword(s):  
Dynamic Model ◽  
Space Debris ◽  
Residue Analysis ◽  
Dynamic Modelling ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Natural Orbital ◽  
Low Earth Orbit Satellite ◽  
Chemical Residue ◽  
Particle Velocities

AbstractA simple dynamic model to investigate the relative fluxes and particle velocities on a spacecraft’s different faces is presented. The results for LDEF are consistent with a predominantly interplanetary origin for the larger particulates, but a sizable population of orbital particles with sizes capable of penetrating foils of thickness <30μm. Data from experiments over the last 30 years do not show the rise in flux expected if these were space debris. The possibility of a population of natural orbital particulates awaits confirmation from chemical residue analysis.

Big Pots for Big Shots: Feasting and Storage in a Mississippian Community

1993 ◽  
Vol 58 (01) ◽  
pp. 80-96 ◽  
Author(s):  
John H. Blitz
Keyword(s):  
Social Integration ◽  
Food Consumption ◽  
Food Storage ◽  
Small Scale ◽  
Restricted Range ◽  
Large Group ◽  
Ceramic Samples ◽  
The Village ◽  
And Storage ◽  
Material Evidence

In small-scale societies, ritual feasts are often an important setting for social integration and status competition. Material evidence of feasting and food storage may be preserved in community ceremonial precincts, such as platform mounds. To identify food-consumption activities, ceramic samples from mound and village contexts at the prehistoric Lubbub Creek site in Alabama are compared. There are no significant differences in the distribution of decorated types, ware categories, or vessel shapes. However, the mound has a more restricted range of vessel sizes and disproportionately larger vessels than the village sample. These results, together with supporting feature and faunal data, suggest that mound activities included large-group feasts and food storage.

A multiclass method for endocrine disrupting chemical residue analysis in human placental tissue samples by UHPLC–MS/MS

2011 ◽  
Vol 3 (9) ◽  
pp. 2073 ◽  
Author(s):  
F. Vela-Soria ◽  
I. Jiménez-Díaz ◽  
R. Rodríguez-Gómez ◽  
A. Zafra-Gómez ◽  
O. Ballesteros ◽  
...  
Keyword(s):  
Residue Analysis ◽  
Placental Tissue ◽  
Tissue Samples ◽  
Endocrine Disrupting Chemical ◽  
Endocrine Disrupting ◽  
Chemical Residue ◽  
Human Placental Tissue

scholarly journals Influence of food, storage temperature, and time on the extracorporeal viability of ruminal fluid of cattle

2018 ◽  
Vol 39 (3) ◽  
pp. 1181
Author(s):  
Camila Cecilia Martin ◽  
Ayrton Rodrigo Hilgert ◽  
Erica Cristina Bueno do Prado Guirro
Keyword(s):  
Ambient Temperature ◽  
Storage Temperature ◽  
Rumen Fluid ◽  
Chloride Content ◽  
Water Bath ◽  
Food Storage ◽  
Ruminal Fluid ◽  
Influence Of Food ◽  
Group A

Rumen fluid obtained from slaughter houses is sometimes used for transfaunation. In this study, we evaluated the ruminal fluid of cattle fed on pasture or pasture and concentrate and slaughtered recently. The rumen fluid samples were stored in a water bath, at ambient temperature, cooled, or frozen and subjected to physical, chemical, and microbiological evaluation for 24 h. The color, consistency, and odor changed primarily in the cooled samples, followed by the ambient temperature and water bath samples. The pH of fresh ruminal fluid was 7.5 in the pasture group and 6.4 in the pasture and concentrate group. The methylene blue reduction time of the fresh ruminal fluid was 2.35 min in the pasture group and 1.86 min in the pasture and concentrate group; the best values were observed in the water bath group. The chloride content was 15.7 mEq/l in the pasture group and 16.3±3.6 mEq/l in the pasture and concentrate group. A predominance of gram-negative bacteria was observed. The concentration of protozoa was 51.5 in the pasture group and 47.5 × 104/ml in the pasture and concentrate group, with a slight predominance of small protozoa; motility was better in the water bath samples than in the ambient temperature, cooled, and frozen samples. The viability of ruminal fluid collected from freshly slaughtered cattle was influenced by food provided in vivo; however, changes as a function of time and storage temperature were more remarkable. The rumen fluid was viable for up to 9 h when stored in the water bath (38°C) and 2 h at ambient temperature, and it was observed to be nonviable when subjected to cooling or freezing.

Organic residue analysis of Iron Age ceramics from the archaeological site of Kani‐zirin, western Iran

Archaeometry ◽  
2020 ◽  
Vol 62 (3) ◽  
pp. 612-625
Author(s):  
N. Qanbari‐Taheri ◽  
A.‐H. Karimy ◽  
P. Holakooei ◽  
F. Kobarfard
Keyword(s):  
Iron Age ◽  
Residue Analysis ◽  
Archaeological Site ◽  
Organic Residue ◽  
Western Iran ◽  
Organic Residue Analysis

Residue analysis of smoking pipe fragments from the Feltus archaeological site, Southeastern North America

2018 ◽  
Vol 17 ◽  
pp. 640-649 ◽  
Author(s):  
Stephen B. Carmody ◽  
Megan C. Kassabaum ◽  
Ryan K. Hunt ◽  
Natalie Prodanovich ◽  
Hope Elliott ◽  
...  
Keyword(s):  
North America ◽  
Residue Analysis ◽  
Archaeological Site

Evaluation of Capillary Gas Chromatography for Pesticide and Industrial Chemical Residue Analysis. II. Comparison of Quantitative Results Obtained on Capillary and Packed Columns

1986 ◽  
Vol 69 (1) ◽  
pp. 90-93
Author(s):  
Norbert V Fehringer ◽  
Stephen M Walters
Keyword(s):  
Gas Chromatography ◽  
Capillary Column ◽  
Residue Analysis ◽  
Packed Column ◽  
Packed Columns ◽  
Operating Conditions ◽  
Resolving Power ◽  
Injection Technique ◽  
Industrial Chemical ◽  
Chemical Residue

Abstract Results of pesticide and industrial chemical residue determinations, using both capillary and packed column gas chromatography (GC), in 3 Food and Drug Administration (FDA) laboratories have been compiled and compared. Samples consisted of food products collected for routine residue screening by the respective laboratories. Extracts were prepared by conventional multiresidue methodology. Capillary column systems and operating conditions were selected at the discretion of each laboratory and were therefore variable, although split/splitless injectors in the split mode were used with prescribed precautions in all cases. Packed column systems were operated as specified in the FDA Pesticide Analytical Manual (PAM). Overall correlation between the 2 systems, expressed as the average ratio of packed column result to capillary column result, was 0.99 for 120 determinations in 41 samples. The higher resolving power of the capillary systems allowed quantitation of several residues that were incompletely separated and therefore unquantifiable using the packed columns. Capillary column GC with the split injection technique, used with appropriate precautions, was found to be both reliable and advantageous for regulatory determination of pesticide and industrial chemical residues in foods and feeds.

scholarly journals Exploratory Network Reconstruction with Sparse Archaeological Data and XTENT

2021 ◽  
Author(s):  
Benjamin Ducke ◽  
Paulina Suchowska
Keyword(s):  
Bronze Age ◽  
Cultural Exchange ◽  
Archaeological Site ◽  
Network Reconstruction ◽  
Complex Problem ◽  
Small Sample ◽  
Agent Based ◽  
Archaeological Data ◽  
Reconstruction Software ◽  
Material Evidence

AbstractThis contribution discusses methods for reconstructing the links of past physical networks, based on archaeological site locations and mathematical models of few parameters. Networks are ubiquitous features of human culture. They structure the geographical patterning of the archaeological record strongly. But while material evidence of networked social interaction is abundant (e.g. similarities in artefact types and technologies), preserved physical remains of the networks (such as roads) are much rarer, making it difficult, if not impossible, to understand the spatial structure of cultural exchange and diffusion. This raises the intractably complex problem of optimal physical network reconstruction, based solely on the known locations of archaeological finds or sites. We address the tractable subproblem of plausible reconstruction of network links. Using a small sample set of Late Bronze Age settlement sites in and around the Mediterranean, we explore model-based network reconstruction from sparse and legacy archaeological data. A hierarchical model is provided by a network-adapted version of Renfrew and Level’s (1979) classic XTENT formula. We show that a GIS-based implementation, that utilises cost surfaces, offers significantly increased realism and analytical advantages. Our approach represents an alternative (with its specific strengths and weaknesses) to more data-intense and computationally complex approaches, such as agent-based models and simulations. The network reconstruction software used in this study (v.net.models) is available under an open source license.

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