CHEMOTAXONOMIC STUDIES OF ANTS: VOLATILE COMPOUNDS

1969 ◽  
Vol 101 (8) ◽  
pp. 879-883
Author(s):  
K. Vick ◽  
W. A. Drew ◽  
J. Young ◽  
D. J. McGurk ◽  
E. J. Eisenbraun
Keyword(s):  
Volatile Compounds ◽  
Pogonomyrmex Barbatus ◽  
Volatile Chemicals ◽  
Potential Value ◽  
Tapinoma Sessile ◽  
Pheidole Dentata ◽  
Acromyrmex Versicolor

AbstractThe gas chromatograms of some of the volatile chemicals found in the following ants are presented: Pogonomyrmex barbatus (F. Smith), Forelius foetida (Buckley), Conomyrma pyramica (Roger), Iridomyrmex pruinosus analis (E. André), Tapinoma sessile (Say), Trachymyrmex septentrionalis obscura (Wheeler), Pheidole dentata Mayr, Acromyrmex versicolor (Pergunda), and Novomessor cockerelli (E. André). The data and methods are presented to demonstrate their potential value as taxonomic characters in the study of ant systematics.

The Ecology of Collective Behavior in Ants

2019 ◽  
Vol 64 (1) ◽  
pp. 35-50 ◽  
Author(s):  
Deborah M. Gordon
Keyword(s):  
Collective Behavior ◽  
Task Allocation ◽  
Pogonomyrmex Barbatus ◽  
Monomorium Pharaonis ◽  
Nest Choice ◽  
Distribution Of Resources ◽  
Regulation Of Activity ◽  
Pheidole Dentata

Nest choice in Temnothorax spp.; task allocation and the regulation of activity in Pheidole dentata, Pogonomyrmex barbatus, and Atta spp.; and trail networks in Monomorium pharaonis and Cephalotes goniodontus all provide examples of correspondences between the dynamics of the environment and the dynamics of collective behavior. Some important aspects of the dynamics of the environment include stability, the threat of rupture or disturbance, the ratio of inflow and outflow of resources or energy, and the distribution of resources. These correspond to the dynamics of collective behavior, including the extent of amplification, how feedback instigates and inhibits activity, and the extent to which the interactions that provide the information to regulate behavior are local or spatially centralized.

scholarly journals Geographical chemical variability and processing oxidation of volatile compounds of Casearia sylvestris leaves

2021 ◽  
Vol 46 (3) ◽  
pp. 42-48
Author(s):  
Flavio Alexandre Carvalho ◽  
Fernando Bombarda Oda ◽  
Ant�nio Eduardo Miller Crotti ◽  
Eduardo Jos� Crevelin ◽  
Andr� Gonzaga Dos Santos
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Volatile Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Caryophyllene Oxide ◽  
Volatile Chemicals ◽  
Leaf Essential Oil ◽  
Casearia Sylvestris ◽  
Main Components

The Casearia sylvestris Sw. dried leaf essential oil (EO) contains sesquiterpenes as the main components. However, the volatile components in the in natura leaves remain unknown. This study compares the volatile chemicals in the in natura leaves and dried leaf EO of two C. sylvestris populations from Atlantic Forest and Cerrado. The volatile compounds were directly analysed by thermal desorption (TD) coupled to gas chromatography mass spectrometry (GC-MS); the dried leaf EO composition was determined by GC-MS. All the identified compounds were sesquiterpenes, and the major components were (E)-caryophyllene, bicyclogermacrene, ?-elemene, spathulenol, and caryophyllene oxide. In both populations, the sesquiterpene hydrocarbon content and the oxygenated sesquiterpene content respectively decreased and increased on going from the in natura leaves to the dried leaf essential oil, indicating that drying and/or hydrodistillation modified the volatile chemical composition by generating oxidation artifacts. Results suggested that (E)-caryophyllene and bicyclogermacrene may be oxidized during the process to yield caryophyllene oxide and spathulenol, respectively. The two C. sylvestris populations also differed in terms of volatile chemical composition.

The application of electron microscopy to diagnosis in gynecologic neoplasms and tumor-like conditions

1984 ◽  
Vol 42 ◽  
pp. 102-105
Author(s):  
Lawrence M. Roth
Keyword(s):  
Electron Microscopy ◽  
Reproductive Tract ◽  
Malignant Tumors ◽  
Frozen Section ◽  
Cost Effective ◽  
Female Reproductive Tract ◽  
Ultrastructural Examination ◽  
Specific Diagnosis ◽  
Potential Value ◽  
Gynecologic Neoplasms

The female reproductive tract may be the site of a wide variety of benign and malignant tumors, as well as non-neoplastic tumor-like conditions, most of which can be diagnosed by light microscopic examination including special stains and more recently immunoperoxidase techniques. Nevertheless there are situations where ultrastructural examination can contribute substantially to an accurate and specific diagnosis. It is my opinion that electron microscopy can be of greatest benefit and is most cost effective when applied in conjunction with other methodologies. Thus, I have developed an approach which has proved useful for me and may have benefit for others. In cases where it is deemed of potential value, glutaraldehyde-fixed material is obtained at the time of frozen section or otherwise at operation. Coordination with the gynecologic oncologist is required in the latter situation. This material is processed and blocked and is available if a future need arises.

Physiological and Behavioral Cues: Identifying Their Potential Value in Measuring Human-Robot Trust

2012 ◽  
Author(s):  
Tracy L. Sanders ◽  
Natasha Llorens ◽  
Deborah R. Billings ◽  
Kristin E. Schaefer ◽  
Peter A. Hancock ◽  
...  
Keyword(s):  
Potential Value ◽  
Behavioral Cues

Antioxidant profile and HS-SPME/GC-MS-TOF analysis of volatile compounds of Alnus acuminata Ssp. Arguta bark

Planta Medica ◽  
2015 ◽  
Vol 81 (11) ◽  
Author(s):  
MI Aguilar ◽  
JF Rivero-Cruz ◽  
G Duarte-Lisci ◽  
C Alvarado-López
Keyword(s):  
Volatile Compounds ◽  
Antioxidant Profile ◽  
Alnus Acuminata

Anti-biofilm potential of some plant volatile compounds against Proteus mirabilis

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
JAA do Nascimento Júnior ◽  
BS dos Santos ◽  
LCA de Araújo ◽  
AVA Lima ◽  
TD da Silva ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Proteus Mirabilis ◽  
Plant Volatile ◽  
Plant Volatile Compounds

57Co-Hematoporphyrin Accumulation by Experimental Tumors

1976 ◽  
Vol 15 (04) ◽  
pp. 183-184 ◽  
Author(s):  
L. J. Anghileri ◽  
M. Heidbreder ◽  
R. Mathes
Keyword(s):  
Experimental Tumors ◽  
Potential Value ◽  
Tumor Bearing ◽  
In Vivo Distribution

SummaryThe in vivo distribution of 57Co-hematoporphyrin in adenocarcinoma BW10232-bearing mice has been studied. Tumor-bearing and normal animals exhibit similar patterns of radioactivity accumulation. Twenty-four hours after the administration of the radiocompound the ratios tumor to blood and tumor to muscle indicate a potential value of this radioactive porphyrin for the detection of some types of tumor.

Environmental Studies and Ethnic Studies

2020 ◽  
Vol 43 (2) ◽  
pp. 9-16
Author(s):  
David N. Pellow
Keyword(s):  
Case Studies ◽  
Multiple Scales ◽  
Ethnic Studies ◽  
Environmental Studies ◽  
Potential Value

This article offers insights into conceptual, pedagogical, and programmatic crossings and conflicts between the fields of Environmental Studies and Ethnic Studies. It highlights both the important intersections between the two fields and their potential value, while also addressing the challenges posed in the development of programmatic collaborations. Utilizing case studies drawn from the author’s own experiences, the article’s focus is on harnessing the strengths and limitations of both fields to promote transformative knowledge and action at multiple scales.

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