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1

MORFOLOGIA DE LOS GRANOS DE POLEN DE LAS FAMILIAS ACANTHACEAE, VITACEAE Y VIOLACEAE DEL VALLE DE MEXICO  

Microsoft Academic Search

2 RESUMEN Se estudia e ilustra la morfología del polen de las familias Acanthaceae, Vitaceae y Violaceae pertenecientes a la flora del Valle de México; la primera está representada por: Acanthus mollis L., Anisacanthus quadrifidus (Vahl) Standley, Dicliptera peduncularis Nees, Dyschoriste decumbens (Gray) O. Ktze., D. microphylla (Cav.) O. Ktze., Justicia furcata Jacq., Pseuderanthemum praecox (Benth.) Leonard, Ruellia bourgaei Hemsl.,

RODOLFO PALACIOS-CHAVEZ; DAVID LEONOR QUIROZ-GARCIA

2

Miel?s atopinio dermatito etiologijoje.  

E-print Network

??Išskirtos ir identifikuotos atopinio dermatito pažeist? od? kolonizuojan?ios mieli? r?šys, ?vertinta j? ?taka specifini? IgE antik?n? sintezei bei kryžmini? reakcij? tarp skirting? mieli? r?ši? galimyb?.… (more)

Zinkevi?ien?, Auks?

2012-01-01

3

Punk i Polen under kommunismen.  

E-print Network

?? Denne masteroppgaven i historie behandler problemstillingen «Hvordan oppnådde polske ungdommer autonomi gjennom punk på 80-tallet?». Spørsmålet blir drøftet med utgangspunkt i punkernes meningsutveksling gjennom… (more)

Finnanger, Sindre Schultz

2014-01-01

4

Article de recherche Les composs phnoliques des miels : tude prliminaire  

E-print Network

samples of honey : acacia, Robinia pseudoacacia; strawberry tree, Arbutus unedo; sweet chestnut, Castanea- nigte phenolische Extrakte wurden von folgenden acht Honigproben angefertigt : Akazie (Robinia pseudoacacia), Erdbeerbaum (Arbutus une

Paris-Sud XI, Université de

5

VOLUTION DE LA COULEUR DU MIEL LORS DE SA CRISTALLISATION  

E-print Network

de Zoologie et d'Apidologie, 7.N.!?.!4., C.R.A. d'Avignon, Domaine Saint Paul, 84140 Montfavet &dquo;'&dquo;&dquo;&dquo;Station de Technologie des produits végétaux, LN.R.A., C.R.A. d'Avignoia, Domaine Saint Paul, 84140 Montfavet solidifie ensuite et le consommateur n'apprécie pas toujours le nouveau produit. Néanmoins, une ten- dance

Paris-Sud XI, Université de

6

Holocene palaeoenvironmental reconstruction in norteastern Brazi inferred from polen,, charcoal and carboon isotope records  

Microsoft Academic Search

Soils in the Barreirinhas region, Maranhao State, were sampled for 613 C analysis and buried charcoal fragments in the soils were radiocarbon dated. Three soil profiles collected in forested areas around the Lagoa do Caqö and one in a woody savanna (mixture of non-arboreal and arboreal species) located approximately 10 km southeast of the Lagoa were studied. A high-resolution pollen

L. C. R. Pessenda; M. P. Ledru; S. E. M. N. Gouveia; R. Aravena; A. S. Ribeiro; J. A. Bendashsollil; R. Boulet

2005-01-01

7

DTERMINATION DU SULFATHIAZOLE DANS LES MIELS PAR CHROMATOGRAPHIE EN COUCHE MINCE  

E-print Network

ml of acetone at each time. Concentrated extracts are transferred into a chromatographic column which, then 5 ml of acetone acidified by 1,5 ml of HCI 2 N, and further with 60 ml of acetone. The last elution is collec- ted, concentrated and dissolved in 0,5 ml of acetone. The chromatography is achieved on a thin

Boyer, Edmond

8

Article de recherche Analyse pollinique des miels de l'Ontario, Canada  

E-print Network

comiculé), Trifolium hybridum l T. repens (trèfle hybride / trèfle blanc), Melilotus (mélilot), Salix are characteristic of this region : Lotus, Trifolium hybridum / T. repens, Melilotus, Salix, Trifolium pratense et al., 1978). The predominance of Lotus and of Trifolium hybridum / T. repens were the most numerous

Paris-Sud XI, Université de

9

DAS POLLENBILD EINIGER NIEDERLNDISCHER HONIGE Spectre pollinique de quelques miels nerlandais  

E-print Network

one can say that in Dutch honeys Trifolium repen.s (white clover) is present, in combination) and Prunus (fruit trees). For Dutch heather honey the combination of Trifolium repens, Calluna vulgaris gesagt werden, dass in niederländischen Honigen Trifolium repens auftritt, in Kombinationen mit Tilia

Paris-Sud XI, Université de

10

Historia Verdadera de Una Gota de Miel. (The True Story of a Drop of Honey).  

ERIC Educational Resources Information Center

Part of the series "Coleccion Mini-Libros" (Mini-Book Collection), the booklet is a factual account of the life of a bee. Designed to provide a tool for education of the Spanish-speaking child, as well as to stimulate an interest in Spanish among the youth of our country, the publication is a compilation of photographs with a description of bees…

Galarza, Ernesto

11

ORIGEN BOTANICO Y PROPIEDADES QUIMICAS DE LAS MIELES DE LA REGION MEDITERRANEA ARIDA DE CHILE  

Microsoft Academic Search

G. Montenegro, R. Pizarro, G. Avila, R. Castro, C. Ríos, O. Muñoz, F. Bas and M. Gómez. Botanical origin and chemical properties of honeys from an Arid Mediterranean Region of Chile. Pollen grains present in the honeys, produced during the season 2001-2002, in hives of the IV Region of Chile, were identified by microscopic analysis in order to determine their

G. MONTENEGRO; R. PIZARRO; G. AVILA; R. CASTRO; C. RIOS; O. MUÑOZ; F. BAS; M. GOMEZ

12

Especies nuevas de abejas de Cuba y La Española (Hymenoptera: Colletidae, Megachilidae, Apidae)  

Microsoft Academic Search

Five new species of Antillean bees are described and illustrated: Colletes granpiedrensis n. sp. (Cuba) (Colletidae) is charaterized as follows: Head and mesosoma black, legs and metasoma brown. Dense brown hairs on head and mesosoma; white on frons and metasomal terga. Clypeus, frons and mesosoma with large punctures, lesser on vertex and metasoma. Malar space more wide than long. Male

Julio A. Genaro

13

LA VARIABILIT DE LA PRODUCTION DU MIEL CHEZ L'ABEILLE DE RACE NOIRE (APIS MELLIFICA L.)  

E-print Network

-Bataillon, 34000 Montpellier SUMMARY VARIABILITY OF THE HONEY YIELD OF THE BLACK HONEYBEE tApis mellifica mellifica honeybee or pure strain honeybee colonies. Tests were carried out during six years (from 1965 to 1972. #12;The decrease in the honey yield variability among hybrid honeybees, which was made obvious

Boyer, Edmond

14

76 FR 64335 - Notice of Petition for Waiver of Miele, Inc. From the Department of Energy Residential Dishwasher...  

Federal Register 2010, 2011, 2012, 2013

...FOR FURTHER INFORMATION CONTACT: Dr. Michael G...interim waiver does not release a petitioner from the...the petitioner. The contact information for the petitioner is Mr. Steve Polinski, Senior Manager...Waiver. Best regards, Steve Polinski Senior...

2011-10-18

15

1-4244-0117-8/06/$20.00 2006 IEEE PROC. 25th INTERNATIONAL CONFERENCE ON MICROELECTRONICS (MIEL 2006), BELGRADE, SERBIA AND MONTENEGRO, 14-17 MAY, 2006  

E-print Network

thermal conductors and electrical insulators. Due to its electrical and thermal properties [5], aluminium. Deposition conditions have been developed for which suitable electrical, mechanical and thermal properties and circuits, different electrical insulating techniques are being used in combination with aggressive device

Technische Universiteit Delft

16

ESAIM: PROCEEDINGS, December 2013, Vol. 43, p. 136-146 S. Descombes, B. Dussoubs, S. Faure, L. Gouarin, V. Louvet, M. Massot, V. Miele, Editors  

E-print Network

via an implicit finite volume scheme. Introduction Is it necessary to define Cloud computing since it is heard and overheard? Cloud computing is about revolutionizing the Information Technology (IT. Cloud computing is about doing more business with less i.e. fewer infrastructures (servers, network

Paris-Sud XI, Université de

17

2 000 m altitude, in a high mountain lawn environment. After washing the heads with  

E-print Network

2 000 m altitude, in a high mountain lawn environment. After washing the heads with sulfuric acid monofloraux. Une production ex- périmentale de miel de Lavandin a permis la récolte de 3 échantillons de miels

Boyer, Edmond

18

Article original Les sources de pollen et de nectar  

E-print Network

méthode de tri des pelotes. Les meilleures sources de pollen sont Trifolium hybridum/T repens, Cornus les miels unifloraux de Trifolium hybridum/T repens. Les miels annuels reflètent l'importance de ces 2

Paris-Sud XI, Université de

19

pr esent ee par Mohamed AICHOUCHI  

E-print Network

- abeth Berrebi, Adel Changuel, Hong Ding, Goro Furuhashi, Polen Kission, Vijay Raghavan, Maher Rahmouni correction et #12;a la pr eparation de ce manuscrit, et ils sont nombreux: Elisabeth Berrebi, Dominique Brame

Paris-Sud XI, Université de

20

Influences of external factors on the energy conversion and productivity of Scenedesmus sp. in mass culture  

Microsoft Academic Search

Experiments about the influence of external factors on the energy conversion in mass cultures of Scenedesmus are described in this thesis. Several types of culture vessels were used in the laboratory as well as in the open. Demonstration models of Miele washing machines with a volume of 50 l were used for experiments in the open. In the laboratory the

J. C. Wesselius

1973-01-01

21

Hiatus Resolution in Spanish: An Experimental Study  

ERIC Educational Resources Information Center

In Spanish, adjacent vowels across and within word boundaries are either in hiatus or form a diphthong. Generally, when either of the unstressed high vowels /i/ and /u/ appears next to any of the other vowels /e/, /a/, or /o/ the result is a diphthong (i.e., "puerta" "door" less than [pwer.ta], "miel" "honey" less than [mjel], and so on). All…

Souza, Benjamin J.

2010-01-01

22

UNIVERSITY OF CENTRAL LANCASHIRE CENTRE FOR RESEARCH IN LIBRARY & INFORMATION  

E-print Network

UNIVERSITY OF CENTRAL LANCASHIRE CENTRE FOR RESEARCH IN LIBRARY & INFORMATION MANAGEMENT MANAGEMENT INFORMATION FOR THE ELECTRONIC LIBRARY (MIEL) PROGRAMME Management Information Systems and Performance-11-430048-8. ............................................................................................... 19 4.3 WARD, S. ET AL. LIBRARY PERFORMANCE INDICATORS AND LIBRARY MANAGEMENT TOOLS. LUXEMBOURG

Carr, Leslie

23

e x p o s i t i o nlesforts avenir de la plante  

E-print Network

singe (fruit du baobab) . Criquets séchés . Chenilles séchées . Termites séchés . Poivre à queue . Poivre mpévé . Champignons séchés . Huile de palme . Feuilles de koko séchés . Savon au miel de baobab

24

Creating Cultures of Peace: Pedagogical Thought and Practice. Selected Papers from the 10th Triennial World Conference (September 10-15, 2001, Madrid, Spain)  

ERIC Educational Resources Information Center

The 10th Triennial World Conference of the World Council for Curriculum and Instruction (WCCI) was held September 10-15, 2001 in Madrid, Spain. The theme of the conference was "Cultures of Peace." Thirty-four papers and presentations are divided into nine sections. Part I, Tributes to the Founders of WCCI, includes: (1) Tribute to Alice Miel

Benton, Jean E., Ed.; Swami, Piyush, Ed.

2007-01-01

25

Proceedings of the Alabama Governor's Conference on Library and Information Services (January 7-9, 1979).  

ERIC Educational Resources Information Center

Background information, messages from public officials, edited versions of presentations to the delegates, and the 17 resolutions adopted comprise the proceedings of the pre-White House Conference on Library and Information Services. Presentations include a statement of the responsibilities of the delegates by Anthony W. Miele; a review of the…

Crowley, Bill, Ed.

26

Methods & Strategies: Collaborating for Success  

ERIC Educational Resources Information Center

As coordinator of childhood science education at Brooklyn College, Eleanor Miele found an able partner in the school's assistant principal for instruction in a school where the PTA science committee wanted to improve science teaching at their school. They began by asking themselves how they could jump-start a change in science teaching…

Miele, Eleanor; Bennett, Stephanie

2014-01-01

27

ORIGINAL RESEARCH ARTICLE Nuclear and mitochondrial patterns of introgression  

E-print Network

(Apis mellifera mellifera) in Poland Andrzej Oleksa*1 , Igor Chybicki1 , Adam Tofilski2 and Jaroslaw The genetic diversity of the north and western European subspecies of honey bee, Apis mellifera mellifera (the mitocondrial en abejas negras nativas (Apis mellifera mellifera) en Polonia Resumen La diversidad genética de

Tofilski , Adam

28

Deutsch-polnische Beziehungen zehn Jahre nach der Unterzeichnung des Nachbarschaftsvertrages: Eine Werte- und Interessengemeinschaft?  

Microsoft Academic Search

Die deutsch-polnischen Beziehungen haben sich nach der Vereinigung so dramatisch zum Guten verändert, dass von einem Wunder gesprochen worden ist. Zu diesem dramatischen Umschwung haben sicher die gesellschaftlichen Akteure in der BRD und der DDR und in Polen beigetragen, die bereits in den frühen 50er Jahren den Kontakt aufnahmen. Wie sich diese Beziehungen auf der staatlichen und der gesellschaftlichen Ebene

Wolf-Dieter Eberwein; Basil Kerski

2001-01-01

29

Received: 2006-06-30/2006-09-21 Accepted: 2006-10-19 GOODELLK [Dept Evol Ecol Org Biol, Ohio State Univ, Newark, OH 43023, USA] & THOMSONJ D  

E-print Network

Brassica rapa (Brassi- caceae) and the Muskmelon Cucumis melo (Cucurbitaceae). - Entomol Gener 29(2/4): 237, ON MS53G5, Canada]: La Movilizaci6n de polen de una mostaza, Brassica rapa (Brassicaceae),y melbn species. A mellifera removed significantly more pollen from B rapa flowers than B impatiens, largely

Thomson, James D.

30

ter of this honey variety and not a sign of adulteration.  

E-print Network

pruinosa (Homop- tera, Flattidae) donnent une réaction posi- tive dans le test de Fiehe. Analysés par HPLC. Le précipité analysé en HPLC a donné des pics dans la zone des dextrines comme pour les miels de in con- centrations 0.5M,1M and 2M. After feeding the amount of food stored in honey sacs was extracted

Paris-Sud XI, Université de

31

Le partage des lieux saints comme tradition mditerranenne Maria Couroucli, CNRS  

E-print Network

1 Le partage des lieux saints comme tradition méditerranéenne Maria Couroucli, CNRS Introduction au'est la présence des sanctuaires mixtes ou partagés, faisant l'objet de vénération de la part de phénomènes complexes dans une région à écriture l'anthropologue trouve son miel chez les historiens de la

Boyer, Edmond

32

HUMBOLDTD i e Z e i t u n g d e r A l m a M a t e r B e r o l i n e n s i s Berliner Rede an der Humboldt-Universitt  

E-print Network

HUMBOLDTD i e Z e i t u n g d e r A l m a M a t e r B e r o l i n e n s i s Berliner Rede an der Humboldt-Universität Am 17. Juni 2011 fand im Audimax die diesjährige Berliner Rede des Bundespräsidenten auf grö�ere, internationale Zusammenhänge richtet. Komorowski widmete seine Rede 2011 dem Thema Polen

Röder, Beate

33

Hyadaphis tataricae (Ajzenberg), ein neuer Schädling in Mitteleuropa an Lonicera tatarica L. und einigen anderen Lonicera -Ziersträuchern ( Homoptera: Aphididae )  

Microsoft Academic Search

Zusammenfassung  \\u000aHyadaphis tataricae (Ajzenberg), ein ernstzunehmender Schädling anLonicera tatarica L. und auf dem europäischen Kontinent nach Westen vordringend, wurde zuerst im Jahre 1935 aus Moskau beschrieben. Seit 1959 ist die Blattlaus aus Polen bekannt, und im Jahre 1962 wurde sie zum ersten Mal westlich der Oder festgestellt. Im Jahre 1964 wurde sie an vielen Stellen im Stadtgebiet von Berlin, wo

Fritz Paul Müller; Hans Jürgen Buhr

1965-01-01

34

Optimal strategy in chemotherapy for a Gompertzian model of cancer growth.  

PubMed

The problem of optimal cancer chemotherapy is reconsidered. For the assumed result of the therapy the cumulative negative toxic effect of the drug is minimized. The unknown function to be optimized is the time-dependent dose of the drug. The Gompertzian model of cell population growth is employed. The formulated problem of the calculus of variations is solved using the method of Miele (the method of extremization of linear integrals via Green's theorem). The optimal solution is unique and of "bang-bang" type with one switching point. PMID:19032003

Maro?ski, Ryszard

2008-01-01

35

Methylmercury concentrations in six fish species from two Colombian rivers.  

PubMed

The objective of this study was to determine whether fish collected from the La Miel or Nechí Rivers (Colombia) differed in muscle methyl mercury (meHg) concentration. Two fish from six different species were collected from markets adjacent to each river. Overall, fish collected from the market adjacent to the Nechí River contained higher levels of meHg. This result however is being driven by very high meHg concentrations in four individual fish, three of which are Pimelodid, long-whiskered catfish. These catfish may represent ideal sentinel organism for the detection of meHg contamination in Colombian rivers. PMID:22065125

Alvarez, Santiago; Jessick, Ashley M; Palacio, Jaime A; Kolok, Alan S

2012-01-01

36

Drainage areas of the Monogahela River Basin, West Virginia  

USGS Publications Warehouse

This report contains data for 1,127 drainage-area divisions of the Monongahela River Basin, from the headwaters to the confluence of the Monongahela River and Dunkard Creek. Data, compiled in down- stream order, are listed for streams with a drainage area of approximately 2 square miels or larger, and for U.S. Geological Survey streamflow- gaging stations. The data presented are the stream name, the geographical limits, the latitude and longitude of the point, the name of the county and the 7-1/2 minute quadrangle in which the site lies, and the drainage area of that site. The total drainage area of the Monongahela River Basin, West Virginia, is 4,374.94 square miles.

Stewart, D.K.; Mathes, M.V.

1995-01-01

37

An examination of the frequency of invalid forgetting on the Test of Memory Malingering.  

PubMed

The Test of Memory Malingering (TOMM) is the most used performance validity test in neuropsychology, but does not measure response consistency, which is central in the measurement of credible presentation. Gunner, Miele, Lynch, and McCaffrey (2012) developed the Albany Consistency Index (ACI) to address this need. The ACI consistency measurement, however, may penalize examinees, resulting in suboptimal accuracy. The Invalid Forgetting Frequency Index (IFFI), created for the present study, utilizes an algorithm to identify and differentiate learning and inconsistent response patterns across TOMM trials. The purpose of this study was to assess the diagnostic accuracy of the ACI and IFFI against a reference test (Malingered Neurocognitive Dysfunction criteria), and to compare both to the standard TOMM indexes. This retrospective case-control study used 59 forensic cases from an outpatient clinic in Southern Kansas. Results indicated that sensitivity, negative predictive value, and overall accuracy of the IFFI were superior to both the TOMM indexes and ACI. Logistic regression odds ratios were similar for TOMM Trial 2, Retention, and IFFI (1.25, 1.24, 1.25, respectively), with the ACI somewhat lower (1.18). The IFFI had the highest rate of group membership predictions (79.7%). Implications and limitations of the present study are discussed. PMID:24742358

Buddin, W Howard; Schroeder, Ryan W; Hargrave, David D; Von Dran, Emmanuel J; Campbell, Elizabeth B; Brockman, Callie J; Heinrichs, Robin J; Baade, Lyle E

2014-01-01

38

Invisible waves and hidden realms: augmented reality and experimental art  

NASA Astrophysics Data System (ADS)

Augmented reality is way of both altering the visible and revealing the invisible. It offers new opportunities for artistic exploration through virtual interventions in real space. In this paper, the author describes the implementation of two art installations using different AR technologies, one using optical marker tracking on mobile devices and one integrating stereoscopic projections into the physical environment. The first artwork, De Ondas y Abejas (The Waves and the Bees), is based on the widely publicized (but unproven) hypothesis of a link between cellphone radiation and the phenomenon of bee colony collapse disorder. Using an Android tablet, viewers search out small fiducial markers in the shape of electromagnetic waves hidden throughout the gallery, which reveal swarms of bees scattered on the floor. The piece also creates a generative soundscape based on electromagnetic fields. The second artwork, Urban Fauna, is a series of animations in which features of the urban landscape become plants and animals. Surveillance cameras become flocks of birds while miniature cellphone towers, lampposts, and telephone poles grow like small seedlings in time-lapse animation. The animations are presented as small stereoscopic projections, integrated into the physical space of the gallery. These two pieces explore the relationship between nature and technology through the visualization of invisible forces and hidden alternate realities.

Ruzanka, Silvia

2012-03-01

39

Descriptive attributes used in the characterization of stingless bees (Apidae: Meliponini) in rural populations of the Atlantic forest (Misiones-Argentina)  

PubMed Central

Abstract Background Human beings employ a combination of morphological, sensorial, utilitarian, cultural and ecological characters when they identify and classify organisms. Ethnotaxonomy has provided a store of information about the characters cultures employ when they identify and classify a vast diversity of taxonomic groups. Nevertheless, some more research is needed to provide a comparison of the characters employed in the description of taxons, and an analysis of the extent to which those descriptors are represented. Stingless bees constitute a diverse group of social insects that have been widely studied from an ethnobiological perspective due to their utilitarian and cultural importance. The objective of this study is to identify the elements local people consider when characterizing stingless bees, and how important these elements are in the study of local classifications. Methods The methodology used involves semi-structured interviews and trips with the informants to rural areas. Locally known ethnospecies are characterized, descriptive traits and salient criteria used in those characterizations are identified, and the frequency of reference of descriptive traits and salient criteria are estimated. Besides, the descriptive traits used for each ethnospecies are compared, and the contribution of the characterizations as a heuristic strategy in the study of folk classification systems is analyzed. Results The use of 19 biological descriptors (grouped according to 4 salient criteria) and of comparisons among ethnospecies was found. Results suggest the existence of group and specific descriptors. Researchers identified which ethnospecies are considered similar, how less important traits contribute to descriptions, the relation between specific descriptors and ethnospecies, the presence of cognitive prototypes, and the most relevant salient properties from the emic perspective. Conclusions The estimated importance of attributes descriptors allowed us to identify the spectrum of salient properties relevant from the emic perspective to characterize the stingless bees. In this sense, the analysis proposed here is useful to study folk taxonomy in culturally heterogeneous groups or multicultural regions, where the linguistic elements usually employed cannot be applied. Resumen Antecedentes Los seres humanos, al identificar y clasificar a los organismos emplean una combinación de características morfológicas, sensoriales, utilitarias, culturales y ecológicas. Entre los aportes generados desde la etnotaxonomía, se ha obtenido información sobre los caracteres utilizados para identificar y clasificar una gran diversidad de grupos taxonómicos. Sin embargo, aún faltan trabajos donde se comparen los caracteres utilizados en las descripciones de taxones y se analice en qué medida estos descriptores se encuentran representados. Las abejas sin aguijón conforman un diverso grupo de insectos sociales que han sido estudiadas desde la perspectiva etnobiológica, dada su importancia utilitaria y cultural. Los interrogantes que guían este trabajo son ¿Qué elementos tienen en cuenta los pobladores para caracterizar a las abejas sin aguijón? y ¿Qué importancia revisten los mismos en el estudio de las clasificaciones locales? Métodos Se realizaron entrevistas semiestructuradas y recorridos en áreas rurales con los informantes. Se caracterizan a las etnoespecies conocidas localmente; se identifican los atributos descriptores y los criterios emergentes utilizados para dichas caracterizaciones; y se estima la frecuencia de citas de los atributos descriptores y criterios emergentes. Por otra parte, se comparan los atributos descriptores empleados para cada etnoespecie y se analiza el aporte de las caracterizaciones como estrategia heurística en el estudio de los sistemas de clasificación folclóricos. Resultados Se halló el empleo de 19 descriptores biológicos (que fueron agrupados en 4 criterios emergentes) y de comparaciones

2012-01-01

40

Numerical modeling on progressive internal deformation in down-built diapirs  

NASA Astrophysics Data System (ADS)

A two-dimensional finite difference code (FDCON) is used to estimate the finite deformation within a down-built diapir. The geometry of the down-built diapir is fixed by using two rigid rectangular overburden units which sink into a source layer of a constant viscosity. Thus, the model refers to diapirs consisting of a source layer feeding a vertical stem, and not to other salt structures (e.g. salt sheets or pillows). With this setup we study the progressive strain in three different deformation regimes within the “salt” material: (I) a squeezed channel-flow deformation regime and (II) a corner-flow deformation regime within the source layer, and (III) a pure channel-flow deformation regime within the stem. We analyze the evolution of finite deformation in each regime individually, progressive strain for particles passing all three regimes, and total 2D finite deformation within the salt layer. Model results show that the material which enters the stem bears inherited strain accumulated from the other two domains. Therefore, finite deformation in the stem differs from the expected channel-flow deformation, due to the deformation accumulated within the source layer. The stem displays a high deformation zone within its center and areas of decreasing progressive strain between its center and its boundaries. High deformation zones within the stem could also be observed within natural diapirs (e.g. Klodowa, Polen). The location and structure of the high deformation zone (e.g. symmetric or asymmetric) could reveal information about different rates of salt supplies from the source layer. Thus, deformation pattern could directly be correlated to the evolution of the diapir.

Fuchs, Lukas; Koyi, Hemin; Schmeling, Harro

2014-09-01

41

Understanding the Structure and Evolution of Nearby Disk Galaxies  

NASA Astrophysics Data System (ADS)

In order to understand the structure and evolution of disk galaxies, we studied the stellar and gaseous components as well as the star formation rate in nearby disk galaxies. We used PS1 medium deep survey images to derive five-band (grizy) surface brightness profiles down to 30 ABmag/arcsec^2 for about 700 galaxies. From these stellar mass and mass-to-light ratio radial profiles are derived. The stellar mass radial profiles tend to bend-up at large radii, this often traces an extended old stellar population. The mass-to-light ratio profiles tend to rise outside the r25 radii. We also find a larger fraction of up-bending surface brightness profiles than Polen & Trujillo (2006). This may be because their sample is biased towards low surface brightness galaxies. We used HIPASS data as well as VLA HI 21cm data to study the gas component and dynamics of disk galaxies. We used the GALEX UV images to study the star formation of a HI-selected star-forming sample of about 400 galaxies, compiling a database of FUV and NUV radial profiles and related parameters. We used this to study the star forming efficiency (SFE, star formation rate per unit area divided by gas surface mass density) of the sample galaxies. We found that the UV based SFE has a tighter relationship with HI mass than an H_alpha based SFE as typically used in previous studies and the UV SFE is flat across wide range of stellar mass. We constructed a simple model to predict the distribution of interstellar medium and star formation rate in an equilibrium disk with constant two-fluid Toomre Q. This model can reproduces the SFE relations we derived.

Zheng, Zheng

2014-01-01

42

Transient phenomena in the pulse radiolysis of retinyl polyenes. l. Radical anions  

SciTech Connect

The spectra and kinetics of formation and decay of radical anions of a number of retinyl polenes have been studied in methanol and 2-propanol at room temperature, using pulse radiolysis and kinetic spectrophotometry. The bimolecular rate constants for the attachment of solvated electrons, e/sup -//sub MeOH/, to the retinyl polyenes are in the diffusion-controlled limit (8.6 x 10/sup 9/-1.6 x 10/sup 10/ M/sup -1/ s/sup -1/). The radical anions of retinol and retinol acetate have their spectral maxima at 370 to 390 nm, and undergo decay very slowly with second-order kinetics. On the other hand, the radical anions of retinal, retinal n-butylamine Schiff base, and retinoic acid/ester have spectral maxima at 430 to 510 nm, and decay by first-order kinetics in methanol with rate constants in the range 1 x 10/sup 4/ - 1 x 10/sup 6/ s/sup -1/. The decay rates of radical anions of retinal and retinoic acid/ester become considerably longer on going from methanol to less acidic alcohol, 2-propanol, suggesting that protonation by sovent is the major mode of their decay in protic media. In the case of retinal Schiff base, an additional slow process with bimolecular rate constant 9.0 x 10/sup 7/ M/sup -1/ s/sup -1/ in methanol is observed for the formation of radical anion and is ascribed to the electron-transfer reaction from the methanol radical, CH/sub 2/OH. 6 figures.

Raghavan, N.V.; Das, P.K.; Bobrowski, K.

1981-07-29

43

Polar organic marker compounds in atmospheric aerosols: Determination, time series, size distributions and sources  

NASA Astrophysics Data System (ADS)

Terrestrial vegetation releases substantial amounts of reactive volatile organic compounds (VOCs; e.g., isoprene, monoterpenes) into the atmosphere. The VOCs can be rapidly photooxidized under conditions of high solar radiation, yielding products that can participate in new particle formation and growth processes above forests. This thesis focuses on the characterization, identification and quantification of oxidation products of biogenic VOC (BVOCs) as well as other species (tracer compounds) that provide information on aerosol sources and source processes. Atmospheric aerosols from various forested sites (i.e., Hyytiala, southern Finland; Rondonia, Brazil; K-Puszta, Hungary and Julich, Germany) were analyzed with Gas Chromotography/Mass Spectrometry (GC/MS) using analytical procedure that targets polar organic compounds. The study demonstrated that isoprene (i.e., 2-methyerythritol, 2-methylthreitol, 2-methylglyceric acid and C5-alkene triols (2-methyl-1,3,4-trihydroxy-l-butene (cis and trans) and 3 methyl-2,3,4-trihydroxy-1-butene)) and monoterpene (pinic acid, norpinic acid, 3-hydroxyglutaric acid and 3-methyl-1,2,3-butanetricarboxylic acid) oxidation products were present in substantial concentrations in atmospheric aerosols suggesting that oxidation of BVOC from the vegetation is an important process in all studied sites. On the other hand, presence of levoglucosan, biomass burning marker, especially in Amazonian rain forest site at Rondonia, Brazil, pointed that all sites were affected by anthropogenic activities, namely biomass burning. Other identified compounds included plyols, arabitol, mannitol and erythritol, which are marker compounds for fungal spores and monosacharides, glucose and fructose, markers for plant polens. Temporal variations as well as mass size distributions of the detected species confirmed the possible formation mechanisms of marker compounds.

Kourtchev, Ivan

44

Self-image and perception of mother and father in psychotic and borderline patients.  

PubMed

Psychotic and borderline patients rated their self-image and their perception of their mother and father using the Structural Analysis of Social Behavior model (SASB). The borderline patients had more negative images of themselves and their parents, especially their fathers, than did the psychotic patients and the normal subjects, while the psychotic patients' ratings did not differ much from those of the normal subjects. The self-image was related to the images of both parents for borderline patients and normal subjects, while for the psychotic patients only the image of the mother was important for the self-image. In addition, the psychotic patients did not differentiate between the poles of control and autonomy in the introjected self-image. It was concluded that borderline patients are characterized by negative attachment, while psychotic patients are characterized by poor separation from the mother and poor differentiation between autonomy and control. The paper also discusses how this may influence the patients' relations to others. Psychotische und Borderline Patienten beurteilten ihr Selbstbild und ihre Wahrnehmung von Mutter und Vater mit Hilfe der strukturalen Analyse sozialen Verhaltens (SASB). Die Borderline Patienten hattten negativere Selbstbilder und Elternbilder (speziell Vaterbilder) als die psychotischen Patienten und gesunde Personen. Die Beurteilungen der psychotischen Patienten unterschieden sich dagegen nicht besonders von jenen Gesunder. Das Selbstbild stand in Beziehung zu beiden Elternbildern bei den Borderline Patienten und den Gesunden, während bei den psychotischen Patienten nur das Mutterbild für das Selbstbild bedeutsam war. Außerdem konnte bei den psychotischen Patienten nicht zwischen den Polen der Kontrolle und Autonomie bzgl. der introjizierten Selbstbilder differenziert werden. Aus den Ergebnissen wird gefolgert, dass Borderline Patienten durch eine negative Bindung charackterisiert sind, psychotische Patienten dagegen durch eine mangelnde Separation von ihren Müttern und eine geringe Differenzierung zwischen Autonomie und Kontrolle. Es wird außerdem diskutiert, wie die Ergebnisse auf die realen Beziehungen der Patienten zu anderen Menschen Einflus nehmen könnten. Des patients psychotiques et Borderline ont évalué leur image d'eux-mêmes et leur perception de leur mère et père à l'aide du modèle de l'Analyse Structural du Comportement Social (SASB. Les patients Borderline avaient des imagess plus négatives d'eux-mêmes et de leurs parents, surtout de leur père, que les patients psychotiques et les sujets normaux, alors que les patients psychotiques se jugeaient à peine différemment des sujets normaux. L'image de soi était en relation avec les images des deux parents pour les patients Borderline et pour les sujets normaux, alors que pour les patients psychotiques, seulement l'image de la mère jouait un rôle pour leur image. En plus, les patients psychotiques ne différenciaient pas entre les pôles de contrôle et d'autonomie dans l'image de soi introjectée. Nous en avons conclu que les patients Borderline se caractérisent par un attachement négatif, et les patients psychotiques par une faible séparation de la mère ainsi qu'une différenciation modeste entre autonomie et contrôle. L'influence de ceci sur les relations des patients avec les autrs est discutée dans cet article. Pacientes limítrofes y psicóticos evaluaron su autoimagen y la percepción que tenían de sus padres usando el modelo de Análisis estructural del comportamiento social (SASB). Los pacientes limítrofes registraron imágenes más negativas de sí mismos y de sus progenitores, especialmente de su padre, que los pacientes psicóticos y los normales, mientras que las evaluaciones de los pacientes psicóticos no difirieron mucho de las de los sujetos normales. La autoimagen tuvo relación con la imagen de ambos progenitores tanto en el caso de los pacientes limítrofes como de los sujetos normales, mientras que para los pacientes psicóticos no diferenciaron entre control y autonomía en la a

Armelius, K; Granberg

2000-02-01