Pottery Vessel Function and Foodways at El Chorro de Maíta, Cuba

2015 ◽  
Vol 26 (2) ◽  
pp. 260-278 ◽  
Author(s):  
Vernon James Knight ◽  
Roberto Valcarcel Rojas

Our approach assumes that pots are tools, containers whose performance characteristics are adjusted to their primary uses. Traditional agricultural peoples generally distinguish among multiple vessel shapes that have distinct intended uses. In this article, we present afunctional analysis of vessel shapes and sizes performed on a sample of 160 rim sherds from the site of El Chorro de Malta, Cuba. These were assigned to 13 defined vessel shapes, most of which displayed more than one size mode based on estimated orifice diameters. The majority of specimens from El Chorro de Malta are low-profile, composite-contour bowls made in medium and large size modes, followed in frequency by simple-contour bowls and plates. Late Ceramic Age peoples in the Greater Antilles are historically documented as participating in the manioc breadcake-cassareep- stewpot foodway common to much of the tropical lowlands of northern South America. Consequently, it should be possible to show how the container assemblage of El Chorro de Malta is adapted to the requirements of that foodway. We note that, ethnographically, the elaborate processing of bitter manioc itself to produce breadcakes as a staple food does not necessarily require pottery vessels at all. Nonetheless, common stewing as a key component of the foodway—including the production of the condiment called cassareep in the Guianas—can require several containers with potentially distinct performance requirements: one to collect the juice below the sleeve press, another to reduce the expressed juice to the thickened sauce over afire, and a third, the stewpot itself, adapted to simmering vegetable and meat stews. We provisionally suggest that some of the most common shape-size classes at El Chorro de Malta are suited to producing and serving stews and cassareep, the traditional complement to eating manioc breadcake.

2017 ◽  
Vol 28 (1) ◽  
pp. 6-27
Author(s):  
Stéphen Rostain

Amazonia and the Guianas possess exceptional potential for ethnoarchaeological studies because of the precolumbian heritage of modern-day Amerindian people. Surprisingly, minimal scholarship of this nature has been conducted in the South American lowlands. On the French Guiana coast, Maillard, a small Palikur village, was abruptly abandoned in 1990. I initiated an ethnoarchaeological study to pinpoint important differences between the interpretation of archaeological and ethnographic data. I recorded the topography of features and remains, compiled an inventory of artifacts and the contents of discard areas, inventoried the cultivated trees present, and described the characteristics of the surroundings. After analyzing the data using classical methods of archaeological inference to obtain a complete reconstruction of the village and the customs of its inhabitants, I invited the chief into his now-abandoned village to describe the settlement as it was while inhabited. In the twenty years since, I have made several visits to track the natural degradation of the site. This ethnoarchaeological approach shows that archaeologists dealing with field data can make many mistakes. Conversely, ethnographic accounts are distorted by the cultural rules and interdictions of interviewees. This experiment suggests the need for prudence in our interpretations and hypotheses, especially in the tropical lowlands, where archaeological preservation is particularly poor.


1999 ◽  
Vol 607 ◽  
Author(s):  
W. Ruderman ◽  
I. Zwieback

AbstractStriking progress has been made in the development of thigh optical quality, large size and low absorbing single crystals of ZnGeP2, AgGaS2 and CdGeAs2. This will now enable continuously tunable infrared laser sources to be built covering the spectral region from 3.9 to 11 µm.


1997 ◽  
Vol 67 (11) ◽  
pp. 803-808 ◽  
Author(s):  
Gita N. Ramaswamy ◽  
Elizabeth P. Easter

To evaluate the serviceability of a new textile product made of an unconventional fiber blend, it is important to determine if the fabric meets the specific standards required for the intended end-use. The value-added textile products of interest are fabrics made of 50/50 kenaf/cotton in the filling direction and 100% cotton in the warp direction, made in sateen, plain, twill, and oxford weaves. The control fabrics are of 100% cotton in only the plain and sateen weaves. The fabrics are characterized and compared based on ten of the most common fabric properties that affect their performance in everyday use: thread count, thickness, weight, breaking strength and elongation, dimensional stability, wrinkle recovery, abrasion resistance, tear strength, staining and stain release, and pilling resistance. Breaking strength of the experimental fabrics compares well with the control fabrics. Elongation at break is greater in the warp direction (19–35%) than in the filling direction (11–15%), but this difference is not significant. Wrinkle recovery for both fabrics is the same and improves over time. Shrinkage is identical in both fabrics. There is no significant difference in the stiffness of the two fabrics, possibly due to the carding step where kenaf fibers are carded to resemble cotton fibers. Abrasion and pilling resistance are good to excellent. Tear resistance is lower for the experimental fabrics compared with the controls, but it does pass the requirements for both upholstery and apparel fabrics. Kenaf/cotton blends perform the same or better than 100% cotton in their ability to release water-based stains, but the oil stain rates between 3 and 4, indicating a residual stain. Stain resistance can be improved by applying a soil-resistant finish. This study demonstrates that kenaf/cotton blend fabrics meet or exceed the performance requirements for both apparel ( i.e., outer wear items such as barn jackets, hunting vests, overalls, and caps) and upholstery fabrics. Additional advantages of the blend fabrics may be luster, interesting texture, and lightness.


2018 ◽  
Vol 64 (2) ◽  
pp. 200-207 ◽  
Author(s):  
A. F. Dobrodeev ◽  
N. Y. Klementyeva ◽  
K. E. Sazonov

This work investigates a previously unknown phenomenon taking place when a large carrier ship moves in a channel made by an icebreaker narrower than the carrier ship. Usually, the studies of these movement conditions assumed the center line of the ship to coincide with the channel axis and the interaction of ship sides with channel edges to be symmetric. However, the observations made in Ice Basin and in real conditions have shown that in most of cases interaction of ship sides with channel edges is not symmetric. The ship moving in the channel breaks ice only with one of her sides, the other side only rubbing against the edge. The numerical assessments of ship position stability in the channel given in this paper made it possible to understand how this interaction becomes asymmetric. The study also yielded ice resistance assessments for a large carrier ship moving along the channel in these asymmetric conditions.


1972 ◽  
Vol 62 (6) ◽  
pp. 1455-1458
Author(s):  
David Butler ◽  
Paul L. Brown

abstract Secular earth-strain measurements have been made in the central Aleutian Islands during the years 1970 and 1971. An annual variation of about 3 × 10−6 is evident on all records. A residual deformation of less than 3 × 10−6 per year is detected on most records. The state of strain near Amchitka Island, Alaska, at the time of CANNIKIN, November 6, 1971, differed from the state of strain at the time of the MILROW test, October 2, 1969, by less than 1 × 10−5. The strain records also contain novel episodes of large size (1-3 × 10−6) and high strain rate (1 × 10−7 / hr).


Author(s):  
L. Bertini ◽  
M. Beghini ◽  
C. Santus ◽  
G. Mariotti

The use of a gasket made in soft material is not recommended for large size centrifugal compressor case flange. The two case halves are assembled with bolted flanges and leakage is prevented by the metal–to–metal contact under pressure. The prediction of the leakage condition is an important engineering issue for this technology. In the paper an original model able to predict the leakage condition, based on a Fracture Mechanics approach, is presented. The flange surfaces interface is regarded as a crack which can be partially open. As the flanges can not transfer tensile traction, the extension of the open zone, i.e. the crack length, is obtained by the condition that the Stress Intensity Factor K is zero. An analytical model, based on the Weight Function technique, was applied to find the stress intensity K, and then to predict the leakage condition. The paper illustrates a validation of the proposed model by the comparison with a nonlinear Finite Element analysis and the results of a full scale experimental test series obtained by a research collaboration between industry and academia. The leakage pressure predicted by the model is in good agreement with the numerical prediction and the experimental results.


2017 ◽  
Vol 21 ◽  
pp. 190-195
Author(s):  
Ioan Tuns ◽  
Marius Mantulescu ◽  
Teofil Florin Galatanu

Any building must ensure safety conditions during the exploitation, at the level of designed exigencies, throughout the entire lifespan. The completion degree of the structural performance requirements, in the given exploitation conditions, results following the assessment of the technical state of the building. This paper presents a case study performed on an industrial “ground floor” type building, with the purpose to assess the exploitation safety level for the constituent structural elements and engineered consolidation measures. The structural reliability solutions have been designed in compliance with the execution possibilities limited by the existing of ventilation tubing , of big dimensions , made in France, of ,,polyester reinforced with glass fiber’’, which is situated along columns of axis A, at 30 cm approximate and the owner cannot to interrupt the technological process during the works.


1921 ◽  
Vol 58 (9) ◽  
pp. 420-426 ◽  
Author(s):  
Herbert L. Hawkins

AMONG the Echinoids from the Limestone Lenticles of Shenley Hill (Leighton Buzzard), sent to me from the Sedgwick Museum, Cambridge (see Geol. Mag., Vol. LVIII, 1921, p. 57), one specimen of the many Pyriniform examples at once attracted attention by its preservation, relatively large size, and superficial resemblance to Holectypus. A brief comment on the specimen (No. 3 of the series) was made in the note already cited; further and more detailed examination, preceded by removal of matrix, has revealed additional features of much interest. Though averse to diagnosis of new genera or species based on single specimens, I have felt compelled to adopt that course in this case, in default of acquaintance with any described types to which the Shenley Echinoid could be assimilated. It is quite likely that other specimens, congeneric if not conspecific, may exist in collections; according to their preservation or the idiosyncrasy of individuals they may be labelled Holectypus, Conulus, or Pyrina with equal probability. It is even possible that some of the numerous species of Pyrina (including Pseudopyrina and Globator), already described, may be referable to the genus here introduced; but more details of morphology than are often supplied in systematic diagnoses and figures are needed before order can come out of the chaotic series of Cretaceous Echinonëidæ.


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