scholarly journals How Toxic is Milkweed when Harvested and Cooked according to Myaamia Tradition?

2019 ◽  
Vol 10 (1) ◽  
pp. 50-56
Author(s):  
Michael A. Everest ◽  
Michael P. Gonella ◽  
Holly G. Bowler ◽  
Joshua R. Waschak
Keyword(s):  
Native Americans ◽  
Plant Extract ◽  
Cardiac Glycosides ◽  
Asclepias Syriaca ◽  
Stages Of Growth ◽  
Before And After ◽  
Derivatizing Agent ◽  
The Common ◽  
Glycoside Poisoning ◽  
Culinary Practices

Asclepias syriaca L. (common milkweed) is known to contain sufficient amounts of cardiac glycosides, which are known to be toxic to humans. Nonetheless, it is traditionally used for food by Native Americans, including the Myaamia people of Indiana and Oklahoma. In order to test the hypothesis that traditional horticultural and culinary practices prevent the Myaamia from ingesting toxic levels of cardiac glycosides, we have determined the level of glycosides (digitoxin equivalent) in A. syriaca 1) in various parts of the plant, 2) at various heights for pre-reproductive plants, and 3) before and after cooking according to traditional Myaamia procedures. Plants were grown, harvested, dried, ground, and extracted twice with ethanol. The amount of digitoxin-equivalent glycoside in plant extract was determined spectrophotometrically using 2,2’,4,4’-tetranitrodiphenyl, a selective derivatizing agent. We find that all parts of the plant contain significant levels of cardiac glycosides at all stages of growth. Plants harvested as young shoots for food, the common practice of the Myaamia, contain slightly lower levels of cardiac glycosides when compared to the leaves and stems of older, taller plants. Moreover, the toxicity is significantly reduced by the traditional Myaamia cooking procedure—a repeated boiling with several changes of water. Therefore, it appears as though the risk of glycoside poisoning from traditional Myaamia use of milkweed for food is moderated by their harvesting practice and traditional cooking procedure.

Reconsidering Taíno Social Dynamics after Spanish Conquest: Gender and Class in Culture Contact Studies

2004 ◽  
Vol 69 (4) ◽  
pp. 597-626 ◽  
Author(s):  
Kathleen Deagan
Keyword(s):  
Native Americans ◽  
Social Practice ◽  
Social Dynamics ◽  
Analytical Framework ◽  
Cultural Practice ◽  
Culture Contact ◽  
Contact Period ◽  
Cultural Elements ◽  
Mitigating Factors ◽  
Before And After

Despite the fact that the Taíno people of the Caribbean were the first Native Americans to encounter and coexist with Europeans after 1492, there has been almost no archaeology of Taíno response to that encounter. This study explores the reasons for (and consequences of) this neglect, and their larger implications for American contact-period archaeology. It also challenges prevailing historical models of Taíno social disintegration, drawing upon six years of archaeological work at the En Bas Saline site in Haiti, the only extensively excavated Taíno townsite occupied both before and after contact. Our results, organized by a household-scale analytical framework emphasizing Taíno constructions of gender and class, suggest that there were few major alterations to traditional Taíno social practice during the post-contact period, and most of these were related to activities thought to have been the domain of non-elite Taíno men. It is suggested that the relatively nonspecialized gender roles among the Taíno, as well as the clearly differentiated nature of their social classes, may have served as mitigating factors in the disruption of Taíno cultural practice under Spanish domination. This work also reveals a marked Taíno resistance to the incorporation of European cultural elements, which provides a striking contrast to the Spanish patterns documented in contact-era European towns, and underscores the critical importance of incorporating gender relations into studies of culture contact.

Errors in Force Generation and Changes in Controlling Patterns Following Agonist Muscle Fatigue

2009 ◽  
Vol 25 (4) ◽  
pp. 293-303 ◽  
Author(s):  
Yi-Ming Huang ◽  
Ya-Ju Chang ◽  
Miao-Ju Hsu ◽  
Chia-Ling Chen ◽  
Chia-Ying Fang ◽  
...  
Keyword(s):  
Muscle Fatigue ◽  
Constant Error ◽  
Antagonist Muscle ◽  
Activation Level ◽  
Before And After ◽  
Agonist And Antagonist ◽  
Common Drive ◽  
The Common ◽  
Possible Cause ◽  
Related Increase

The purpose of this study was to evaluate whether agonist muscle fatigue changed the coactivation time and the co-contraction magnitude of the agonist and antagonist muscle, and if the agonist muscle fatigue produced bias (constant error: CE) and inconsistency (variable error: VE) of the force. Subjects are 10 healthy people and one person with impaired proprioception. EMG and force for fast (0.19 ± 0.06 s) and slow (1.20 ± 0.44 s) targeted isometric dorsiflexions were recorded before and after fatigue of the dorsiflexors. The results revealed that the coactivation time increased after fatigue only in the slow contractions but the co-contraction magnitude did not change. The postfatigue increment of the CE was greater in the fast contractions than in the slow ones. We conclude that the postfatigue compensatory strategy can reduce the fatigue-induced bias. The change of muscles activation level after fatigue might be under the influence of the common drive. Impaired proprioception is a possible cause of the fatigue-related increase in bias and inconsistency.

scholarly journals Implementation and Evaluation of a Communication Strategy to Control Ragweed Pollen

2016 ◽  
Vol 5 (1) ◽  
pp. 87
Author(s):  
Celine Plante ◽  
Audrey Smargiassi ◽  
Francine Hubert ◽  
Sophie Goudreau
Keyword(s):  
Fold Increase ◽  
Ambrosia Artemisiifolia ◽  
Communication Strategy ◽  
Ragweed Pollen ◽  
Communication Intervention ◽  
Effective Measure ◽  
Land Owners ◽  
Before And After ◽  
Logistic Regressions ◽  
The Common

The common ragweed (<em>Ambrosia artemisiifolia</em>) is widespread in southwestern areas of Quebec, Canada. It is known to release large quantities of pollen from July through September, triggering allergic reactions such as rhinitis and generating significant costs for public health. The objective of this study was to implement and evaluate a communication intervention aimed at decreasing ragweed pollen. Selected lands with potential ragweed presence were visited twice, before and after the intervention, on three seasons in the East of the Montreal Island, Quebec. At the first visit done in 2010, 2011, and 2012, ragweed plots were located and measured; at the second visit in 2012, the measures were redone. Various numbers of communications were sent to owners of ragweed-infested lands that included explanations of health impacts of ragweed pollen and the importance of mowing. Mixed logistic regressions were used to test the effect of the number of communications on the mow. In the group that received four notices, a statistically significant three-fold increase in the proportion of land owners that had cut ragweed plots (OR = 3.20; 95 %CI: 1.16-8.84) was noted, compared to the group that received only one notice. For owners of vacant lands, the effect was somewhat more pronounced (OR = 3.82; 95%CI: 1.23-11.67). Nonetheless, the change from one to three communications showed no increase of mowing. In conclusion, the results of the present study suggest that communications and reminders of the importance of ragweed cut to landowners could be an effective measure to limit ragweed pollen.

scholarly journals Patient and Therapist In-Session Cortisol as Predictor of Post-Session Patient Reported Affect

2021 ◽  
Vol 11 (11) ◽  
pp. 1483
Author(s):  
Eyal Levi ◽  
Susanne Fischer ◽  
Hadar Fisher ◽  
Roee Admon ◽  
Sigal Zilcha-Mano
Keyword(s):  
Positive Affect ◽  
Stress Hormone ◽  
Major Depressive ◽  
Retrospective Reports ◽  
The Social ◽  
Patient Reported ◽  
Before And After ◽  
The Common ◽  
Underlying Mechanisms

The importance of the role of affect in psychotherapy for major depressive disorder (MDD) is well established, but the common use of self-reported measures may limit our understanding of its underlying mechanisms. A promising predictor of patient affect is the stress hormone cortisol. To date, no studies have studied in-session changes in cortisol in psychotherapy for MDD. We investigated whether an increase in patient cortisol over the course of a session correlated with higher negative and lower positive affect. Given previous findings on healthy individuals on the contagious nature of stress, an additional aim was to examine whether these relationships are moderated by therapist cortisol. To this end, 40 dyads (including 6 therapists) provided saliva samples before and after four pre-specified sessions (616 samples). After each session, the patients provided retrospective reports of in-session affect. We found no association between patient cortisol and affect. However, increases in patient cortisol predicted negative affect when the therapists exhibited decreases in cortisol, and increases in patient cortisol predicted positive affect when the therapists showed increases. Our study provides initial evidence for the importance of the social context in the cortisol–affect relationship in MDD.

scholarly journals Mosca-Branca, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) em feijoeiro: Características gerais, bioecologia e métodos de controle

2017 ◽  
Vol 10 (1) ◽  
pp. 01-08
Author(s):  
Anderson Gonçalves da Silva ◽  
Arlindo Leal Boiça Junior ◽  
Bruno Henrique Sardinha de Souza ◽  
Eduardo Neves Costa ◽  
James da Silva Hoelhert ◽  
...  
Keyword(s):  
Common Bean ◽  
Bemisia Tabaci ◽  
Crop Production ◽  
Insect Pests ◽  
Economic Losses ◽  
Common Beans ◽  
Bean Plants ◽  
De Se ◽  
Before And After ◽  
The Common

Resumo. A cultura do feijoeiro pode ser infestada por insetos que afetam a produção antes e após a colheita, tendo como estimativa de perdas causadas nos rendimentos pelas pragas variando de 33 a 86%. Dentre essas pragas a mosca-branca Bemisia tabaci (Genn.) Autor merece destaque. Esta ocasiona danos diretos decorrentes de sua alimentação e indiretos que ocorrem por meio da excreção açucarada de honeydew ou “mela” e simbiose com a fumagina. No entanto, o dano mais sério causado pela B. tabaci é a transmissão de viroses como o mosaico-dourado-do-feijoeiro, provocando perdas econômicas que podem variar de 30% a 100%. Desse modo, o objetivo do presente estudo é disponibilizar informações a respeito de aspectos importantes de B. tabaci, como: histórico e distribuição geográfica, bioecologia e dinâmica populacional, plantas hospedeiras, métodos de controle adotados, dentre outros, a fim de se fornecer subsídios para futuras pesquisas sobre a mosca-branca em feijão.Whitefly Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) in common beans: General characteristics, bioecology, and methods of controlAbstract. Common bean plants are infested by insects, which can ultimately affect the crop production before and after harvest, with estimated losses ranging from 33 to 86%. Among the insect pests infesting the common beans the whitefly Bemisia tabaci (Genn.) stands out. This species cause direct injury by feeding on the plants and indirect injury by excreting sugary honeydew that is after colonized by the sooty mold. In addition, the most serious damage caused by B. tabaci is the transmission of virus diseases, especially the common bean golden mosaic, responsible for economic losses varying from 30 to 100%. This review aims at providing information on important aspects of B. tabaci including its geographical distribution, bioecology, population dynamics, host plants, and methods of pest control. We expect that this review can provide valuable subsidies for future studies on the whitefly in common beans.

scholarly journals Les catastrophes naturelles dans les romans caribéens d’expression française

Il Tolomeo ◽  
2020 ◽  
Author(s):  
Alessia Vignoli
Keyword(s):  
Native Americans ◽  
Natural Hazards ◽  
Caribbean Literature ◽  
Common Origin ◽  
Caribbean Region ◽  
Common Features ◽  
African Slaves ◽  
European Colonization ◽  
The Common ◽  
The Caribbean

The notion of ‘disaster’ pervades the Caribbean thought. The common origin of the Caribbean region, the European colonization, caused two disasters: the extermination of Native Americans and the deportation of African slaves. The union between nature and the oppressed people against the oppressor resulted in the creation of an environmental conscience that the Caribbean literature has often expressed. This essay will investigate the common points shared by some Haitian, Martinican and Guadeloupean authors in the writing of natural hazards. It will show that, despite the diversity that marks the Caribbean, there is a repetition of common features that proves its geopoetic unity.

scholarly journals Identyfikacja sposobów implementacji II filaru WPR w krajach Europy Środkowo-Wschodniej

2018 ◽  
pp. 109-123 ◽  
Author(s):  
Krzysztof Pawłowski ◽  
Wawrzyniec Czubak
Keyword(s):  
Rural Areas ◽  
Central And Eastern Europe ◽  
Agricultural Sector ◽  
Development Program ◽  
Time Range ◽  
The European Union ◽  
Before And After ◽  
Rural Development Program ◽  
The Common ◽  
The Impact

The 2nd pillar of the Common Agricultural Policy plays a very significant role in shaping the image of a modern, European village. It’s impact on the development of agriculture and rural areas seems to be obvious, for example because of the place it occupies in the structure of the European Union budget. However, it’s very important to precisely determine the effects of its implementation. Therefore, in this article the main goal was to show the reasons for diversifying the implementation of the Rural Development Program 2007–2013 in the countries of Central and Eastern Europe. Against the background of differences in the economic and production situation of the agricultural sector, the design of the Programs was evaluated and it’s impact on changes in the agricultural sectors of these countries was compared. To show the impact of the funds of the second pillar of the CAP, the time range presenting changes in agriculture covers the years before and after integration. Based on them, a comparison of the implemented activities and the structure of their financing has been made.

scholarly journals Behaviour and Skin Injuries of Piglets Originating from a Novel Group Farrowing System Before and After Weaning

Agriculture ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 93 ◽  
Author(s):  
Lilith Schrey ◽  
Nicole Kemper ◽  
Michaela Fels
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Body Weight Gain ◽  
Skin Lesions ◽  
Lesion Score ◽  
Skin Injuries ◽  
Individual Housing ◽  
Common Area ◽  
Before And After ◽  
The Common

The aim of this study was to analyse a novel group farrowing system (GH) concerning piglets’ behaviour, skin injuries and body weight gain, to test its animal friendliness. Skin injuries and weight gain were compared to piglets originating from conventional individual housing (IH) before and after weaning. The GH system had five farrowing pens without crates, a common area and an area only available for piglets. In total, 34 litters were studied. Four days after the GH-piglets had left the pens during lactation, the lesion score of piglets in GH was higher than in IH. However, piglets from the GH sustained fewer injuries after mixing at weaning, compared to the piglets from IH and had higher daily weight gains, during the early nursery phase. The common area in GH was intensively used for active behaviour, since standing/walking and playing were observed there, most frequently, whereas lying occurred most frequently inside the pens. Immediately after the piglets had left the pens in the GH, the piglets preferred proximity to the sow, compared to the pens where they were born. The GH system enabled social enrichment, offered increased space for activity and led to fewer skin lesions, after weaning; thus, potentially increasing animal welfare.

scholarly journals Cell-density-dependent changes in cell-surface glycopeptides and in adhesion of cultured intestinal epithelial cells

1982 ◽  
Vol 201 (2) ◽  
pp. 359-366 ◽  
Author(s):  
Wlodzimierz Sasak ◽  
Annette Herscovics ◽  
Andrea Quaroni
Keyword(s):  
Epithelial Cells ◽  
Cell Surface ◽  
Cell Density ◽  
Intestinal Epithelial Cells ◽  
Intestinal Epithelial ◽  
Stages Of Growth ◽  
Culture Cells ◽  
Significant Difference ◽  
Before And After ◽  
High Mannose

We studied mannose-containing glycopeptides and glycoproteins of subconfluent and confluent intestinal epithelial cells in culture. Cells were labelled with d-[2-3H]mannose for 24h and treated with Pronase or trypsin to release cell-surface components. The cell-surface and cell-residue fractions were then exhaustively digested with Pronase and the resulting glycopeptides were fractionated on Bio-Gel P-6, before and after treatment with endo-β-N-acetylglucosaminidase H to distinguish between high-mannose and complex oligosaccharides. The cell-surface glycopeptides were enriched in complex oligosaccharides as compared with residue glycopeptides, which contained predominantly high-mannose oligosaccharides. Cell-surface glycopeptides of confluent cells contained a much higher proportion of complex oligosaccharides than did glycopeptides from subconfluent cells. The ability of the cells to bind [3H]concanavalin A decreased linearly with increasing cell density up to 5 days in culture and then remained constant. When growth of the cells was completely inhibited by either retinoic acid or cortisol, no significant difference was observed in the ratio of complex to high-mannose oligosaccharides in the cell-surface glycopeptides of subconfluent cells. Only minor differences were found in total mannose-labelled glycoproteins between subconfluent and confluent cells by two-dimensional gel analysis. The adhesion of the cells to the substratum was measured at different stages of growth and cell density. Subconfluent cells displayed a relatively weak adhesion, which markedly increased with increased cell density up to 6 days in culture. It is suggested that alterations in the structure of the carbohydrates of the cell-surface glycoproteins are dependent on cell density rather than on cell growth. These changes in the glycopeptides are correlated with the changes in adhesion of the cells to the substratum.

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