scholarly journals Primeiro registro da vespa parasitoide Pachysomoides, associada a ninhos de Mischocyttarus cerberus e alguns comentários sobre o comportamento da espécie de vespa parasitoide

2019 ◽  
Vol 20 (1) ◽  
pp. 1-7
Author(s):  
Rafael Carvalho Da Silva ◽  
Amanda Prato Da Silva ◽  
Diego Santana Assis ◽  
Fabio Santos Nascimento
Keyword(s):  
Scientific Literature ◽  
Parasitoid Wasp ◽  
Parasitoid Behavior ◽  
Interaction Behavior ◽  
First Time

In this work, we are reporting, for the first time, a parasitoid wasp associated to the nests of Mischocyttarus cerberus, also we provide information concerning the parasitoid behavior when close to its host. We believe that the parasitism process is not easily accomplished, because the host resident females keep guarding and attacking whenever they detect any kind of parasitoid approach. Our results provide more detailed and important information about the host-parasitoid interaction behavior involving the Pachysomoides sp. and M. cerberus, which so far is scarce scientific literature.

Possible Causes in Breaking of Dental Implants Research

2017 ◽  
Vol 907 ◽  
pp. 104-118
Author(s):  
Maria Stoicănescu ◽  
Eliza Buzamet ◽  
Dragos Vladimir Budei ◽  
Valentin Craciun ◽  
Roxana Budei ◽  
...  
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Scientific Literature ◽  
Surface Characteristics ◽  
Raw Material ◽  
New Materials ◽  
Materials Used ◽  
Type Of Failure ◽  
First Time ◽  
Consequent Increase

Dental implants are becoming increasingly used in current dental practice. This increased demand has motivated manufacturers to develop varieties of product through design, but also looking for new materials used to improve surface characteristics in order to obtain a better osseointegration. But the increase in the use of implants goes to a consequent increase in the number of failures. These failures are caused either by treatment complications (peri-implantitis), by fatigue breakage under mechanical over-stress, by defective raw material, or due to errors during the insertion procedures. Although they are rare, these complications are serious in dentistry. Before to market a dental implant to clinical practitioners, the product is validated among other determinations in number of biocompatibility research. Raw material issues, details about its structure and properties are less published by the scientific literature, but all this are subject of a carefully analysis of the producers. Breaking of dental implants during surgical procedures, during the prosthetic procedures or during use (chewing, bruxism, accidents, etc.), is the second most common cause of loss of an implant after consecutive peri-implantitis rejection. Although the frequency of this type of failure for a dental implant is much smaller than those caused by the peri-implantitis, a detailed study of broken implants can explain possible causes. The use of scanning electron microscopy (SEM) in the study of the cleave areas explain the production mechanism of cleavages, starting from micro-fissures in the alloy used for the production of dental implants. These micro-fissures in weak areas of the implant (anti-rotational corners of the polygons, etc.) could generate a serious risk of cleavage first time when a higher force is applied.

scholarly journals Propiedades psicométricas de la Escala de Interacción en las Clases Dirigidas (EICD)

2016 ◽  
Vol 12 (3) ◽  
pp. 840 ◽  
Author(s):  
Adrián Pastor-Barceló ◽  
Vicente Prado-Gascó ◽  
Pilar Bustillo-Casero
Keyword(s):  
Design Methodology ◽  
Scientific Literature ◽  
Small Sample ◽  
Improve Quality ◽  
Validity And Reliability ◽  
Final Version ◽  
First Time ◽  
To Receive ◽  
Insight Into

Purpose: This research focuses on the construction and validation of a scale designed to assess the quality of the supervised classes: Interaction on Supervised Classes Scale (ISCS).Design/methodology/approach: This is a descriptive correlational study. For the construction of the scale three phases were performed in which different experts assessed the adequacy of the items. Finally, the psychometric properties of the final version were studied in a sample of 314 consumers (69.1% women) aged between 18 and 77 with an average of 39.33 years (SD=12.25).Findings: The scale presents adequate validity and reliability, being a useful tool for measuring the interaction in Supervised Classes.Research limitations/implications: The sampling, non-probabilistic or convenience, have taken the sample of a unique sports facility and the small sample size.Practical implications: The ISCS allows managers to receive better feedback, allowing them to obtain deeper insight into the quality and satisfaction of the service. According to its results, the managers may implement different strategies to improve quality in a key service within sports centers.Originality/value: For the first time the interaction between customers and between customers and employees is evaluated both inside and outside the center, a topic that had not yet been studied in the scientific literature. The scale can be applied to any type of directed activity, and will allow a greater understanding of the quality of service.

scholarly journals Redescription of Centronia melanitis Hübner, 1818 (Lepidoptera: Arctiinae: Arctiini: Ctenuchina) with notes on androconial organs

2021 ◽  
Vol 3 ◽  
pp. ec03029
Author(s):  
Juan Grados ◽  
Karla Mantilla
Keyword(s):  
Scientific Literature ◽  
Sexual Attraction ◽  
Museum Collections ◽  
First Time

The Neotropical genus Centronia Hübner, 1818 is monotypic and represented by the species Centronia melanitis Hübner, 1818. Individuals of this species display diurnal habits and are attracted by plant bait of Heliotropium sp.. Specimens of Centronia are very rare in museum collections. The present study, notes are provided for the male specimens and the first time the female is mentioned in the scientific literature. The presence of androconial organs in Centronia melanitis and other species of Ctenuchina is hypothesized to be related to the visits to pyrrolizidine sources and their role in the pheromones production and the sexual attraction for mating.

scholarly journals The growth of interest for astronomical X-ray polarimetry

2018 ◽  
Author(s):  
Frédéric Marin
Keyword(s):  
Quantitative Assessment ◽  
Supernova Remnant ◽  
Scientific Literature ◽  
High Energy ◽  
X Ray ◽  
Highly Sensitive ◽  
In The Beginning ◽  
First Time

Astronomical X-ray polarimetry was first explored in the end of the 60's by pioneering rocket instruments. The craze arising from the first discoveries on stellar and supernova remnant X-ray polarization led to the addition of X-ray polarimeters on-board of early satellites. Unfortunately, the inadequacy of the diffraction and scattering technologies required to measure polarization with respect to the constraints driven by X-ray mirrors and detectors, coupled to long integration times, slowed down the field for almost 40 years. Thanks to the development of new, highly sensitive, compact X-ray polarimeters in the beginning of the 2000's, the possibility to observe astronomical X-ray polarization is rising again and scientists are now ready to explore the high energy sky thanks to modern X-ray polarimeters. In the forthcoming years, several X-ray missions (both rockets, balloons and satellites) will open a new observational windows. A wind of renewal blows over the area of X-ray polarimetry and this paper presents for the first time a quantitative assessment, all based on scientific literature, of the growth of interest for astronomical X-ray polarimetry.

scholarly journals CONSENSUAL GAMES IN NETWORK WARS AND THE IMPLANT PHENOMENON

2020 ◽  
Vol 4 (4) ◽  
pp. 393-399
Author(s):  
E.V. Bakshutova
Keyword(s):  
Social Network ◽  
Scientific Literature ◽  
Social Issues ◽  
Online Discussions ◽  
Expert Assessment ◽  
Research Experience ◽  
The Social ◽  
Russian President ◽  
First Time ◽  
Medicine Education

This article summarizes the author's research experience in 2018-2020 on the possibility of script implantation in online discussions of an aggressive nature to prevent their destructive impact on personality and social consent. At this stage, script implantation is conceptualized by us as network peacekeeping to reduce the level of aggression in communications. The work analyzes how peacemaking is presented in scientific literature of various directions - military, philosophical, political science, conflictological, and it is revealed that the psychological aspects of peacekeeping are of increasing interest, since the practice of peacekeeping is fraught with many problems. Moreover, the practice of network peacemaking as work with language and group sociocognitive psychology is offered for the first time. The study was conducted in 2018-2020 in the Russian-speaking sector of the social network Facebook. It is shown that the analysis of 5022 comments in 2018, 2458 - in 2019, 3139 - in 2020 allows identifying such trigger topics of online discussions as “It is good or bad to be Russian”, “President of Russia”, “Ukraine”, “Protests”. Social issues: the problems of pensioners, childhood, medicine, education - are discussed, but with less intensity. Summarizing the experience of search experiments, the author shows in which categories and subcategories such phenomena as collective fears, resentment, aggression, separatism and terrorism are represented. Work on creating script templates for networked peacekeeping is noted. An expert assessment of the selected texts allows us to assert that the management of triggered discussions is possible. The research is financially supported by the Russian Foundation for Humanities, project no. 18-013-00171 А.

scholarly journals The Waterston’s evaporatorium of Ceraphronidae (Ceraphronoidea, Hymenoptera): A morphological barcode to a cryptic taxon

2021 ◽  
Vol 85 ◽  
pp. 29-56
Author(s):  
Jonah M. Ulmer ◽  
István Mikó ◽  
Andrew R. Deans ◽  
Lars Krogmann
Keyword(s):  
Phylogenetic Analysis ◽  
Potential Function ◽  
Parasitoid Wasp ◽  
Species Level ◽  
Exocrine Gland ◽  
Dorsal Vessel ◽  
Taxonomic Significance ◽  
Character Set ◽  
Males And Females ◽  
First Time

The Waterston’s evaporatorium (=Waterston’s organ), a cuticular modification surrounding the opening of an exocrine gland located on metasomal tergite 6, is characterized and examined for taxonomic significance within the parasitoid wasp family Ceraphronidae. Modification of the abdominal musculature and the dorsal vessel are also broadly discussed for the superfamily Ceraphronoidea, with a novel abdominal pulsatory organ for Apocrita being discovered and described for the first time. Cuticular modification of T6, due to the presence of the Waterston’s evaporatorium, provides a character complex that allows for genus- and species-level delimitation in Ceraphronidae. The matching of males and females of a species using morphology, a long standing challenge for the group, is also resolved with this new character set. Phylogenetic analysis including 19 Waterston’s evaporatorium related characters provides support for current generic groupings within the Ceraphronidae and elaborates on previously suggested synapomorphies. Potential function of the Waterston’s organ and its effects on the dorsal vessel are discussed.

Revision of the Neotropical parasitoid wasp genus Hapsinotus (Hymenoptera: Ichneumonidae: Banchinae)

2018 ◽  
Vol 150 (6) ◽  
pp. 716-801
Author(s):  
M. Alvarado ◽  
S. Bordera ◽  
A. Rodríguez-Berrío ◽  
L. Figueroa
Keyword(s):  
New Species ◽  
Trinidad And Tobago ◽  
French Guiana ◽  
Parasitoid Wasp ◽  
First Time

AbstractThe species of the Neotropical genus Hapsinotus Townes, 1970 (Hymenoptera: Banchinae) are revised. A total of 31 new species are described: H. amallullanew species, H. amaquellanew species, H. amarakaerinew species, H. amasuanew species, H. amazonensisnew species, H. bicolornew species, H. brevisnew species, H. chiquitanew species, H. etenew species, H. guntherinew species, H. huaoraninew species, H. kentorinew species, H. killanew species, H. lamasinew species, H. mariannaenew species, H. mashconew species, H. michenerinew species, H. petirrojonew species, H. pittierinew species, H. plaumanninew species, H. prolixusnew species, H. pukanew species, H. secoyanew species, H. shushufindinew species, H. sofiaenew species, H. surinennew species, H. tainonew species, H. tupinew species, H. vilcainew species, H. yananew species, and H. yumbonew species. Hapsinotus is recorded for the first time in Bolivia, Brazil, Ecuador, French Guiana, Mexico, Panama, Venezuela, Suriname, and Trinidad and Tobago. The range of distribution is expanded for H. atripleurum Townes, 1970 to Brazil and Ecuador, H. morenus Ugalde-Gómez and Gauld, 2002 to Panama, H. nigrogena Ugalde-Gómez and Gauld, 2002 to Ecuador, H. notaulator Ugalde-Gómez and Gauld, 2002 to Panama, H. parvatus Ugalde-Gómez and Gauld, 2002 to Mexico, and H. transversus Ugalde-Gómez and Gauld, 2002 to Brazil and Peru. A key to the species of the genus is provided.

Structural, chemical and spectroscopic re-examination of type uklonskovite leads to its redefinition

2017 ◽  
Vol 81 (6) ◽  
pp. 1397-1404 ◽  
Author(s):  
S. Menchetti ◽  
L. Bindi ◽  
D. Belakovskiy ◽  
F. Zaccarini
Keyword(s):  
Crystal Structure ◽  
Scientific Literature ◽  
Careful Analysis ◽  
Chemical Formula ◽  
International Mineralogical Association ◽  
Mineralogical Association ◽  
Structural Details ◽  
First Time ◽  
Shed Light

AbstractThe crystal structure and the chemical composition of uklonskovite from the holotype material was reinvestigated to shed light on its correct chemical formula. On the basis of information gained from this characterization, we revised the formula from NaMg(SO4)OH·2H2O to NaMg(SO4)F·2H2O (F instead of OH). A careful analysis of the structural details together with a critical review of all the chemical data listed in the scientific literature for uklonskovite support our redefinition. We also present Raman data for the mineral for the first time. Our proposal was approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (voting proposal 16-J).

scholarly journals A Multidisciplinary Review of the Roles of Cripto in the Scientific Literature Through a Bibliometric Analysis of its Biological Roles

Cancers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1480
Author(s):  
Elisa Rodrigues Sousa ◽  
Eugenio Zoni ◽  
Sofia Karkampouna ◽  
Federico La Manna ◽  
Peter C. Gray ◽  
...  
Keyword(s):  
Bibliometric Analysis ◽  
Scientific Literature ◽  
Stem Cell Differentiation ◽  
Tissue Growth ◽  
Growth And Remodeling ◽  
Comprehensive Overview ◽  
Critical Knowledge ◽  
Physiological Processes ◽  
First Time ◽  
Glucose Regulated Protein

Cripto is a small glycosylphosphatidylinisitol (GPI)-anchored and secreted oncofetal protein that plays important roles in regulating normal physiological processes, including stem cell differentiation, embryonal development, and tissue growth and remodeling, as well as pathological processes such as tumor initiation and progression. Cripto functions as a co-receptor for TGF-β ligands such as Nodal, GDF1, and GDF3. Soluble and secreted forms of Cripto also exhibit growth factor-like activity and activate SRC/MAPK/PI3K/AKT pathways. Glucose-Regulated Protein 78 kDa (GRP78) binds Cripto at the cell surface and has been shown to be required for Cripto signaling via both TGF-β and SRC/MAPK/PI3K/AKT pathways. To provide a comprehensive overview of the scientific literature related to Cripto, we performed, for the first time, a bibliometric analysis of the biological roles of Cripto as reported in the scientific literature covering the last 10 years. We present different fields of knowledge in comprehensive areas of research on Cripto, ranging from basic to translational research, using a keyword-driven approach. Our ultimate aim is to aid the scientific community in conducting targeted research by identifying areas where research has been conducted so far and, perhaps more importantly, where critical knowledge is still missing.

How it happened that a portion of a treatise entitled New Improvements of Planting and Gardening both Philosophical and Practical by Richard Bradley FRS, which dealt with blights of trees and plants, provided the first report of an environment that contained green sulphur photosynthetic bacteria

2007 ◽  
Vol 61 (3) ◽  
pp. 327-332 ◽  
Author(s):  
Melvin Santer
Keyword(s):  
Infectious Disease ◽  
Photosynthetic Bacteria ◽  
Scientific Literature ◽  
Enrichment Culture ◽  
Carbon Dioxide Gas ◽  
Green Sulphur ◽  
Anoxic Environment ◽  
First Time ◽  
Transmit Disease ◽  
Natural Enrichment

Richard Bradley proposed that biological agents caused infectious disease. He agreed that air could transmit disease, but it had to contain a living agent, either visible or microscopic. To dismiss the idea that air alone could cause disease he included evidence provided by Robert Balle about a toxic grotto near Lake Averna, close to Naples, whose fumes were lethal to animals and humans yet that lethality was not contagious and occurred quickly, not a characteristic of ‘pestilential fevers’. In this grotto the surface water was covered with a ‘green scum’, a layer of green sulphur photosynthetic bacteria that could live in that anoxic environment, which contained hydrogen sulphide and carbon dioxide gas and was accessible to visible light. This environment was a natural enrichment culture for these bacteria. It was the first time that the presence of these bacteria was disclosed in the scientific literature.

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