Antigenic components in haemolymph of some reduviids (Hemiptera, Reduviidae)

1974 ◽  
Vol 52 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Ruth Perassi ◽  
José A. Cerisola
Keyword(s):  
Rhodnius Prolixus ◽  
The Other ◽  
Triatoma Infestans ◽  
Antigenic Composition ◽  
Qualitative And Quantitative ◽  
Other Hand

The antigenic composition of haemolymph from some reduviids was studied by means of immunochemical methods.No differences were detected between haemolymph from Triatoma infestans and Triatoma platensis. On the other hand, important qualitative and quantitative differences were observed in the antigenic composition of the haemolymph from Triatoma phyllosoma pallidipenis, Triatoma spinolai, Triatoma rubrovaria, Triatoma vitticeps, Rhodnius prolixus, and Rhodnius neglectus with respect to Triatoma infestans.

Comparative leaf development of aerial and aquatic growth forms of Myriophyllum aquaticum

Botany ◽  
2013 ◽  
Vol 91 (7) ◽  
pp. 421-430 ◽  
Author(s):  
M.D. Shafiullah ◽  
Christian R. Lacroix
Keyword(s):  
Apical Meristem ◽  
Epidermal Cells ◽  
The Other ◽  
Developmental Study ◽  
Growth Forms ◽  
Myriophyllum Aquaticum ◽  
Stages Of Development ◽  
Qualitative And Quantitative ◽  
Early Stages ◽  
Other Hand

Myriophyllum aquaticum (Vell.) Verdc. produces two morphologically different forms of leaves based on whether they are aerial or aquatic. The objective of this study was to determine whether there are any similarities or differences between these two growth forms during their early stages of development. A comparative developmental study of aerial and aquatic growth forms of M. aquaticum was conducted from a qualitative and quantitative perspective using a scanning electron microscope. The pattern of leaf and lobe initiation such as their origin and shape were similar in both growth forms until the fourth plastochron (stage P4). Differences between the two growth forms became evident from stage P5 onward, where a larger shoot apical meristem (SAM), elongated epidermal cells, shorter and slightly more numerous lobes, as well as the presence of appendage-like structures characterized aquatic growth forms. On the other hand, aerial growth forms had smaller SAM, bulb-like epidermal cells, and longer and slightly less numerous leaf lobes. Significant differences between growth forms were noted for parameters such as volume of SAM, length of terminal, first, and middle lobes, as well as the length from first to last lobes. The volume of the SAM of aquatic shoot tips was always greater than aerial forms. On the other hand, lobes of aerial forms were always longer than the aquatic counterpart during early stages of development. This study on the development of M. aquaticum shows that the aerial and aquatic growth forms diverge from their early stages of development.

scholarly journals Efecto de la alternación de fuentes sanguíneas sobre la fecundidad y la fertilidad de Rhodnius prolixus Stal (Heteroptera: Reduviidae).

2009 ◽  
Vol 2 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Elis José Aldana ◽  
David Jácome ◽  
Eliézer Lizano
Keyword(s):  
Human Blood ◽  
Linear Relation ◽  
Rhodnius Prolixus ◽  
The Other ◽  
Insect Species ◽  
Reproductive Parameters ◽  
Other Hand ◽  
Blood Source

En este trabajo se evidencia que si el éxito reproductivo de Rhodnius prolixus Stal está relacionado a la fuente alimentaria, entonces las necesidades biológicas del insecto son satisfechas en modos diferentes según el tipo de alternancia entre dichas fuentes de alimentación; tales diferencias son reveladas mediante los cambios en fertilidad y fecundidad del insecto. Se realizaron nueve alternancias, en cada una se suministraron dos alimentaciones, en unas se alternó la fuente de alimentación y en los controles se suministraron dos alimentaciones con la misma fuente. Las fuentes alimentarias fueron paloma, gallina y humano, esta última mediante un aparato de alimentación artificial; estas fuentes se escogieron en el supuesto que son fuentes alimentarias encontradas en los ecotopos silvestre, peri-domicilio y domicilio respectivamente. En todos los tipos de alternancia se encontró una relación lineal entre la fecundidad y el tiempo de oviposición, que la relación entre cantidad de sangre ingerida y la fecundidad varían, que la tasa de fecundidad aumenta en la segunda alimentación respecto a la primera y que la fertilidad fue superior al 95 %.   Effects of alternating blood sources on fecundity and fertility of Rhodnius prolixus Stal (Heteroptera: Reduviidae) In this work it is argued that if the reproductive parameters of Rhodnius prolixus Stal are related to the blood source upon which it feeds, then the insects biological needs must be satisfied in different ways by the alternation between blood sources, reveled through changes in the fecundity and fertility of individuals of this insect species. Nine experiments were conducted, each one consisting of two feedings, in which the blood source were either alternated or remained the same. The meal sources used were pigeon, hen and human blood, selected according to the resources found in the sylvatic, peri-domestic and domestic ecotopes respectively. It was found that the quantity of blood ingested and the fecundity were differents according to alternation of blood sources offered in each meal. A linear relation was found between the fecundity and the time of oviposition in every alternation of meal sources. On the other hand there was a slope increase in the second feeding of every experiment. The fertility was above 95% in each experiment.   Efeito da alternação de fontes sanguíneas sobre fecundidade e fertilidade de Rhodnius prolixus Stal (Heteroptera Reduviidae) Neste trabalho evidencia-se que o sucesso reprodutivo de Rhodnius prolixus Stal esta relacionado à fonte alimentícia, então as necessidades biológicas do inseto são satisfeitas em modos diferentes segundo o tipo de alternância entre ditas fontes de alimentação; tais diferenças são reveladas mediante mudanças em fertilidade e fecundidade do inseto. Realizaram-se nove testes, em cada um foram subministradas duas alimentações, sendo que em alguns foi alternada a fonte de alimentação e nos controles foram subministradas duas alimentações com a mesma fonte. As fontes alimentícias foram pomba, galinha e humano, esta ultima mediante um aparelho de alimentação artificial; estas fontes foram escolhidas no suposto que são fontes alimentícias encontradas nos ecótopos silvestres, peridomicilio e domicilio respectivamente. Em todos os tipos de alternância foi encontrada uma relação lineal entre a fecundidade e o tempo de oviposição, que a relação entre quantidade de sangue ingerida e a fecundidade variam, que a taxa de fecundidade aumenta na segunda alimentação respeito à primeira e que a fertilidade foi superior ao 95%.

The Role of the Haemocytes in the Growth and Moulting of an Insect, Rhodnius Prolixus (Hemiptera)

1955 ◽  
Vol 32 (4) ◽  
pp. 649-663
Author(s):  
V. B. WIGGLESWORTH
Keyword(s):  
High Temperatures ◽  
Blood Cells ◽  
Trypan Blue ◽  
Secretory Activity ◽  
Rhodnius Prolixus ◽  
Crystalline Material ◽  
The Other ◽  
Full Activity ◽  
Other Hand

Moulting in Rhodnius is greatly delayed by the injection of trypan blue, indian ink or iron saccharate, which are taken up by the phagocytic blood cells (amoebocytes). This delay occurs only when the injections are made during the first 3 days after feeding, not on the fourth day or later. On the fourth day after feeding the amoebocytes become filled with secretory vacuoles which restrict the uptake of indian ink or iron saccharate. When the amoebocytes are blocked by such injections within a day after feeding, the secretory activity of the thoracic gland is greatly reduced. This is proved histologically and experimentally. On the other hand, moulting induced by implantation of a fully active thoracic gland is not delayed by blocking the haemocytes. It is therefore concluded that some substance secreted by the haemocytes is necessary for the full activity of the thoracic glands. The crystalline hormone isolated by Butenandt & Karlson from the silkworm will induce moulting in the decapitated Rhodnius larva and in the isolated abdomen. Its action is not inhibited or delayed by the injection of indian ink or iron saccharate. This supports the conclusion that it is the product of the thoracic gland. Sublethal high temperatures will inhibit moulting in Rhodnius even when it is provided with abundant hormone by injection of the crystalline material or by joining in parabiosis with a moulting larva.

scholarly journals Impactos ambientales generados por la actividad deportiva, recreativa y turística en alta montaña. Análisis de la cordillera de la Región Metropolitana de Santiago, Chile (Environmental impact generated by sports, recreation, and tourism activities in hi

Retos ◽  
2019 ◽  
pp. 62-69
Author(s):  
Pablo Rebolledo Dujisin
Keyword(s):  
Environmental Management ◽  
Environmental Impact ◽  
High Altitude ◽  
Decision Makers ◽  
The Other ◽  
High Mountain ◽  
Qualitative And Quantitative ◽  
Other Hand ◽  
Surprising Finding ◽  
Recreation And Tourism

El objetivo del estudio consiste en aportar el conocimiento de los efectos generados por la actividad deportiva y la recreación en alta montaña, para fortalecer la gestión y la disminución de los impactos indeseables. El método ha consistido en la aplicación de una herramienta cualitativa y una cuantitativa: una encuesta a los actores relevantes dentro del mundo actividades recreativas de alta montaña y una adaptación de la Matriz de Leopold en senderos, campamentos y cumbres de dos sectores de práctica del deporte de alta montaña en la zona central de Chile; la revisión bibliográfica permite comprender, por otra parte, el fenómeno y destacar las iniciativas de las federaciones internacionales de actividades deportivas de montaña para la gestión ambiental. Llama la atención, como conclusión de la encuesta, la percepción del deporte de alta montaña como una actividad inocua que genera impactos despreciables y, por otra parte, destaca en los resultados de la Matriz de Leopold la concentración de desperdicios, los efectos de las tiendas de campaña y los baños improvisados, afectando principalmente a las fuentes de agua y al suelo. Lo que conlleva una situación donde los tomadores de decisión no son conscientes de los efectos y, por lo tanto, no están tomando las medidas adecuadas para su control.Abstract. The objective of the study is to provide knowledge about the effects generated by sports and recreation in high altitude mountains, to strengthen their management and decrease their undesirable impacts. The method consisted in the application of qualitative and quantitative tools: a survey to stakeholders, and an adaptation of the Leopold Matrix on trails, camps and summits in two areas for high altitude sport in the central region of Chile; on the other hand, bibliographic review allows to understand this phenomenon, and highlight the initiatives of international federations of mountain sports for better environmental management. As a conclusion of the survey, a surprising finding is that high mountain sports are perceived as innocuous activities that generate negligible impacts; on the other hand, concentration of waste, and effects of tents and improvised toilets stand out as main results from the Leopold Matrix, mainly affecting water sources and soil. This demonstrates that decision makers are not aware of the effects of mountain sports and, therefore, they are not taking appropriate measures to control them.

Studies on the zeolites. Part VIII. A theory of the vapour pressure of the zeolites, and of the diffusion of water or gases in a zeolite crystal

1935 ◽  
Vol 24 (150) ◽  
pp. 99-130 ◽  
Author(s):  
Max H. Hey
Keyword(s):  
Experimental Data ◽  
Vapour Pressure ◽  
The Other ◽  
Zeolite Crystal ◽  
Qualitative And Quantitative ◽  
Extensive Data ◽  
Other Hand ◽  
The Subject

The behaviour of the zeolites on dehydration, and their capacity for absorbing other gases and vapours in place of the water removed, have formed the subject of numerous investigations, qualitative and quantitative, of various degrees of accuracy. In only a few cases have attempts been made to fit an equation to the experimental data. Of these equations, those proposed by O. Weigel, G. F. Hüttig, and O. Schmidt are quite inadequate, as is readily seen by a trial with the more extensive data now available. On the other hand, E. Rabinowitsch derived an equation which proved capable Of reproducing the experimental data and is very similar to the equation now proposed, but derived in a quite different way.

scholarly journals THE TRANSLATION OF IDIOMATIC EXPRESSION IN BLOODLINE INTO “GARIS DARAH”

2017 ◽  
Vol 3 (2) ◽  
pp. 228-239
Author(s):  
Putu Astari Hendrawati ◽  
I Wayan Budiarta
Keyword(s):  
Quantitative Methods ◽  
The Other ◽  
Open Form ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
Other Hand ◽  
Translation Technique ◽  
Idiomatic Expression ◽  
Figure Of Speech ◽  
Close Form

Abstract The aims of this thesis are to figure out the techniques and process of translation of English idiom into Indonesian Language. The data were taken from a Novel by Sidney Sheldon entitled “Bloodline” and its translation Garis Darah. The collected data was analyzed by using qualitative and quantitative methods. The data of this study were collected by identifying and classifying the data based on the idioms and translation procedures by using Hocket (1958). Another theory is from Vinay & Dalbernet’s (1995) and also supported by a theory proposed by Catford (1978). Through classification based on the theory there are three types of idioms, they are English phrasal compound that is divided into three parts such as the close form, the hyphenated form and the open form; figure of speech that is divided into four parts such as simile, hyperbole, metaphor, and personification; and slang. All types of idioms are applied in this thesis and it is found there are 289 data. The close form is 3, the hyphenated form is 16, the open form is 11, simile with 42 data, metaphor and personification are 26, hyperbole is 33, and slang is 132 data. On the other hand, there are seven techniques of translation according to the theory, they are borrowing, calque, literal, transposition, modulation, adaptation, and equivalence. All techniques are applied in this thesis. The most dominant translation technique that is applied in this thesis is adaptation with the percentage of 33,5% (97 data), the second is literal with 33,2% (96 data), modulation and equivalence has same percentage as 10,3% (30 data), transposition is 9,3% (27 data), borrowing with 2,76% (8 data), and the last is calque with 0,34% (1 data). Keywords: techniques of translation, idiomatic expression, languages

scholarly journals Old English Ge- and the Descriptive Power of Nerthus

2008 ◽  
Vol 5 ◽  
pp. 209 ◽  
Author(s):  
Francisco Javier Martín Arista
Keyword(s):  
Old English ◽  
Present State ◽  
The Other ◽  
Derivational Morphology ◽  
Qualitative And Quantitative ◽  
Form And Function ◽  
Extensive Analysis ◽  
Other Hand ◽  
And Function

The main purpose of this article is to carry out an extensive examination of the evidence available of the Old English affix ge- in general, and, in particular, of the ge-alternation, which holds between predicates that bear a form-and-function contrast such as hlid ‘lid’~gehlid ‘roof’. The gealternation is examined as a pure and a mixed alternation, co-occurring with gradation, zero derivation and affixation. The conclusion is reached that ge- is the most frequent and the most widely distributed affix in Old English. Moreover, it partakes in inter-categorial and recursive derivation. As a secondary goal, this article aims at assessing the descriptive adequacy of the database of Old English derivational morphology Nerthus both on qualitative and quantitative grounds. In this respect, the conclusion is reached that the amount of evidence of ge- that can be drawn from Nerthus allows for an extensive analysis of the affix. On the other hand, Nerthus, in its present state, requires more accurate and formalised meaning definitions.

A study of cometary eruptions through OH radio-lines

1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró
Keyword(s):  
Short Duration ◽  
Growth Curves ◽  
The Other ◽  
Initial Mass ◽  
Radio Lines ◽  
Other Hand ◽  
Sudden Rise

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.

Closing the GAP—A 5Å Scanning Microscope

1969 ◽  
Vol 27 ◽  
pp. 6-7
Author(s):  
A. V. Crewe
Keyword(s):  
Normal Form ◽  
The Other ◽  
Resolving Power ◽  
Scanning Microscope ◽  
Conventional Microscope ◽  
Other Hand ◽  
Closing The Gap ◽  
Thermal Sources ◽  
Better Than ◽  
Transmission Microscope

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.

Life Beyond 1MeV

1980 ◽  
Vol 38 ◽  
pp. 30-33
Author(s):  
K.H. Westmacott
Keyword(s):  
Electron Microscopy ◽  
Past Experience ◽  
The Other ◽  
Good Case ◽  
Other Hand ◽  
The U.S

Life beyond 1MeV – like life after 40 – is not too different unless one takes advantage of past experience and is receptive to new opportunities. At first glance, the returns on performing electron microscopy at voltages greater than 1MeV diminish rather rapidly as the curves which describe the well-known advantages of HVEM often tend towards saturation. However, in a country with a significant HVEM capability, a good case can be made for investing in instruments with a range of maximum accelerating voltages. In this regard, the 1.5MeV KRATOS HVEM being installed in Berkeley will complement the other 650KeV, 1MeV, and 1.2MeV instruments currently operating in the U.S. One other consideration suggests that 1.5MeV is an optimum voltage machine – Its additional advantages may be purchased for not much more than a 1MeV instrument. On the other hand, the 3MeV HVEM's which seem to be operated at 2MeV maximum, are much more expensive.

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