scholarly journals Common Backswimmer Notonecta glauca (Linnaeus 1758) (Hemiptera: Notonectidae)

EDIS ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. 3
Author(s):  
Taryn Griffith ◽  
Jennifer Lynn Gillett-Kaufman

Notonecta glauca, the common backswimmer, is an aquatic insect most easily recognizable by their long hind legs. Insects in the family Notonectidae are commonly referred to as backswimmers or greater water boatman. They propel themselves through the water on their dorsal side with their abdomen facing upwards, this is how they acquired their common name. Insects commonly referred to as lesser water boatman are in the family Corixidae, not Notonectidae, like common backswimmers. They can inflict wounds to humans with their proboscis (mouthpart), but this is very rare and often is a result of rough handling.

2020 ◽  
Vol 12 (17) ◽  
pp. 17374-17379
Author(s):  
W.G.D. Chathuranga ◽  
K. Kariyawasam ◽  
Anslem De Silva ◽  
W.A.Priyanka P. De Silva

We investigated the impact of dipteran predators on eggs in foam nests of the Common Hour-glass Tree Frog Polypedates cruciger Blyth, 1852 (Anura: Rhacophoridae) in central Sri Lanka.  Foam nests (n=24) of P. cruciger were examined at their natural breeding habitats and infected (n=8) and uninfected spawns (n=16) were identified.  Emerging tadpoles were collected in a water container hung under each spawn and the average number of tadpoles (N) hatched from infected spawns (N=0) was compared with that of uninfected spawns (N=354 ± 67).  Three severely infected spawns were brought to the laboratory and the fly larvae were reared until they metamorphosed to adults.  Morphological and molecular identification of the flies confirmed them as belonging to Caiusa testacea Senior-White, 1923 of the family Calliphoridae.  The infected spawns were completely destroyed and an estimated average of 400 P. cruciger eggs per spawn were lost.  The results revealed a high impact of Caiusa testacea on egg and embryo mortality of P. cruciger.


Mathematics ◽  
2021 ◽  
Vol 9 (16) ◽  
pp. 1835
Author(s):  
Antonio Barrera ◽  
Patricia Román-Román ◽  
Francisco Torres-Ruiz

A joint and unified vision of stochastic diffusion models associated with the family of hyperbolastic curves is presented. The motivation behind this approach stems from the fact that all hyperbolastic curves verify a linear differential equation of the Malthusian type. By virtue of this, and by adding a multiplicative noise to said ordinary differential equation, a diffusion process may be associated with each curve whose mean function is said curve. The inference in the resulting processes is presented jointly, as well as the strategies developed to obtain the initial solutions necessary for the numerical resolution of the system of equations resulting from the application of the maximum likelihood method. The common perspective presented is especially useful for the implementation of the necessary procedures for fitting the models to real data. Some examples based on simulated data support the suitability of the development described in the present paper.


2021 ◽  
Vol 2 (1) ◽  

Covid 19 being a pandemic has uniformly and bizarrely affected the globe in a most unpredictable manner. So it becomes very important to unravel the transmission dynamics and the effect of the virus which has made it a deadly virus so far. Covid 19 is a member of coronavirus family, which also includes the SARS virus (Severe Acute Respiratory Syndrome) and MERS (Middle East Respiratory Symptoms) virus. The family of Coronavirus includes virus strains that the common cold and flu are caused [1].


2012 ◽  
Vol 562-564 ◽  
pp. 2084-2087
Author(s):  
Hui Ding ◽  
Xu Yang Lou

This paper addresses stability properties of linear switched positive systems composed of continuous-time subsystems and discrete-time subsystems. Based on the common linear copositive Lyapunov functions, stability of the positive systems is discussed under arbitrary switching. Moreover, a sufficient condition on the minimum dwell time that guarantees the stability of linear switched positive systems. The dwell time analysis interprets the stability of linear switched positive systems through the distance between the eigenvector sets. Thus, an explicit relation in view of stability is obtained between the family of the involved subsystems and the set of admissible switching signals.


Artifex Novus ◽  
2019 ◽  
pp. 58-75
Author(s):  
Anna Sylwia Czyż

ABSTRAKT Sprowadzone do Wilna między 1616 a 1618 r. benedyktynki utworzyły niewielką i skromnie uposażoną wspólnotę. Ich sytuacja zmieniła się w 1692 r., kiedy to dzięki bogatym zapisom Feliksa Jana Paca mogły wystawić murowany kościół konsekrowany w 1703 r. Hojność podkomorzego litewskiego nie była przypadkowa, bowiem do wileńskich benedyktynek wstąpiły jego córki Sybilla i Anna, jedyne potomstwo jakie po sobiepozostawił. Z nich szczególne znaczenie dla dziejów klasztoru miała Sybilla (Magdalena) Pacówna, która w 1704 r. została wybrana ksienią. Nie tylko odnowiła ona życie wspólnoty, ale stała się również jedną z najważniejszych postaci ówczesnego Wilna. Po pożarze w 1737 r. Sybilla Pacówna energicznie przystąpiła do odbudowy klasztoru i kościoła, którą kończyła już jej następczyni Joanna Rejtanówna. Wzniesioną wówczas według projektu Jana Krzysztofa Glaubitza fasadę ozdobiono stiukowo-metalową dekoracją o indywidualnie zaplanowanym programie ideowym odwołującym się i do tradycji zakonnej i rodowej – pacowskiej. W fasadzie wyeksponowano ideały związane z życiem benedyktyńskim sytuując je wśród aluzji o konieczności walki na płaszczyźnie ducha i ciała, włączając w militarną symbolikę także konieczność walki z wrogami Kościoła i ojczyzny oraz charakterystyczną dla duchowości benedyktyńskiej pobożność związaną z krzyżem w typie karawaka oraz zOpatrznością Bożą. Jednocześnie przypominano o bogactwie powołań w klasztorze benedyktynek wileńskich przyrównując mniszki do lilii. Porównanie to dzięki obecności w fasadzie herbu Gozdawa (podwójna lilia) oraz powszechnego w XVII i XVIII w. zwyczaju określania Paców „Liliatami” można było odnosić także do ich rodu, w tym do zasłużonej dla klasztoru ksieni Sybilli. Tak mocne wyeksponowanie fundatorów było nie tylko chęciąupamiętnia darczyńców, ale wraz z całym architektonicznym i plastycznym wystrojem świątyni wiązało się z koniecznością stworzenia przeciwwagi dla nowego i prężnie rozwijającego się pod patronatem elity litewskiej klasztoru Wwizytek w Wilnie. Przy tym charakter dekoracji fasady kościoła pw. św. Katarzyny wpisuje się w inne fundacje Paców: kościół pw. św. Teresy i kościół pw. śś. Piotra i Pawła będąc ostatnią ważną inicjatywą artystyczną rodu w stolicy Wielkiego Księstwa Litewskiego. SUMMARY The Benedictines, who had been brought to Vilnius between 1616 and 1618, formed a small and modest community. Thanks to the generous legacy of Feliks Jan Pac, in 1692 their situation changed as they could erect a brick church, which was then consecrated in 1703. The generosity of the Lithuanian chamberlain was not a coincidence; his two daughters, Sybilla and Anna, the only offspring he left, had joined the Benedictine Sisters in Vilnius. Sybilla (Magdalena) Pac, who became an abbess in 1704, was particularly important for the history of the monastery. Not only did she renew the community life, but she also became one of the most important personalities of the then Vilnius. After the fire in 1737 Sybilla Pac vigorously started rebuilding the monastery and the church, which was completed by her successor, Joanna Rejtan. The facade which was then erected after Johann Christoph Glaubitz’s design was adorned with stucco and metal decorations with a perfectly devised ideological programme which referred to the tradition of the order and to the one of the Pac family. The facade presented ideals connected with the Benedictine life, which placed them among the hints of having to fight at the level of spirit and body, incorporating among the military symbols also the need to fight the enemies of the Church and the state, and the typical for the Benedictine spirituality piety connected with the Caravaca cross and the Divine Providence. At the same time, it reminded of the Benedictine vocations comparing nuns to lilies. This comparison, due to the presence of the Gozdawa coat-of-arms (double lilie) and the common nickname of the Pac family in the 17th and 18th cc. “the Liliats”, could also apply to their lineage, including the abbess Sybilla and her services to the monastery. Exposing founders in such an emphatic way was not only the will to immortalise them, but was also, together with the entire architectural and artistic decor of the church, connected with the need to counterbalance the new and dynamicallydeveloping Visitation Monastery in Vilnius. At the same time, the nature of the facade decoration of the Church of St. Catherine is in line with other foundations of the Pac family: St Theresa’s Church and the St Peter and St Paul Church, and was the last significant artistic initiative of the family in thecapital of the Grand Duchy of Lithuania


1993 ◽  
pp. 16-24
Author(s):  
Eino Jutikkala

Calculations have been made of the total child and adolescent mortality in Finland in the 1700s and 1800s and the beginning of the 1900s. The author examines the cohort mortality of children and adolescents in different periods, regions and social groups. He does this by using the family reconstruction method with the aid of genealogical tables. The study focuses on five populations. In these cases the common allegation that during preindustrial period half the children died before reaching maturity is somewhat exaggerated.


Author(s):  
Caitlin Honan

The Common Market is a nonprofit regional food distributor with a mission to connect communities with good food from sustainable family farms. Outputs of their work include improved food security, farm viability, and community and ecological health. The nonprofit services communities in its three active regions—the Mid-Atlantic, the Southeast, and Houston, Texas—by delivering healthy farm food to the institutions that serve them: schools, hospitals, eldercare facilities, early childhood education centers, etc. As the COVID-19 pandemic struck the nation, it shut down some of the nonprofit’s con­ventional wholesale outlets and exposed and intensified the issue of food insecurity throughout the country. The food hub prepared to lean on its mission intensely and creatively under these unprece­dented circumstances. Poised to test the limits of a regional food system, The Common Market unveiled the resilient spirits of its team, its partners, and the family farms that make up its network. This essay highlights partnerships that ignited meaningful impact for their farmer partners and helped meet the needs of vulnerable populations amidst the pandemic. . . .


2014 ◽  
Vol 286 ◽  
pp. 82-85
Author(s):  
Dorota Krekora-Zając ◽  

The objective of the study involves testing the influence of accessibility of DNA tests, on paternity determination. Without doubt, DNA tests determining the family relationship have become one of the most frequently performed genetic tests commercially. They are carried out both at individual request, as well as for use in judicial proceedings. Undoubtedly, the common use of DNA tests to exclude consanguinity has become very popular in judicial practice. Moreover, it seems that due to the fact that DNA tests are quite accurate in determining blood relations, the regulations of the Family and Guardianship Code have been changed in order to base paternity on the certainty of genetic relation. The study also involved the regulations of the Family and Guardianship Code as well as judicial decisions in order to indicate the nature of evidence from genetic testing and its impact on paternity recognition.


Author(s):  
Cécile Vidal

This chapter explores how the slave system weakened the European religious and moral ideal that restricted sexuality and the family to Christian marriage in French New Orleans. Yet, it challenges the common view according to which the prevalence of métissage was the sign of a lenient racial regime. Sexual relationships across the racial line did not undermine racial formation; on the contrary, they contributed to reinforcing the system of racial domination. Rather than a general moral and religious disorder, what developed was a plural set of sexual and family values and practices that differed according to status, gender, and race.


2021 ◽  
pp. 435-480
Author(s):  
Ben McFarlane ◽  
Nicholas Hopkins ◽  
Sarah Nield

All books in this flagship series contain carefully selected substantial extracts from key cases, legislation, and academic debate, providing able students with a stand-alone resource. This chapter explores the acquisition question in relation to the family home through an analysis of the doctrines of resulting and constructive trusts. The chapter explains the different initial presumptions drawn in cases of joint and sole legal ownership and the particular approach that has been adopted in the case of a home purchased ‘in joint names for joint occupation by a married or unmarried couple, where both are responsible for any mortgage’. The chapter considers how the ‘common intention’ of parties in relation to the common intention constructive trust is determined differently in relation to the primary acquisition question (in cases of sole legal ownership) and the secondary question of the quantification of beneficial shares (applicable in cases of joint and sole beneficial ownership). The chapter addresses the contentious issue of the extent to which the courts’ broader approach to common intention in relation to quantification may be carried over to the primary acquisition question. The chapter considers statutory rights to occupy and current Law Commission proposals for reform.


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