Observations on Choroterpes curtus (Kimmins) (Ephemeroptera) at Jinja, Uganda

The African mayfly Choroterpes curtus (KIMMINS) is known to show a bimodal flight activity at Jinja, Uganda, where extensive light trap catches of this species were made in 1957-58. The dusk peak is made up of sub imagines and occurs at a lower light intensity than does the dawn peak, which is made up of imagines. The dusk peak also shows a lower catch sex ratio (Kimmins) than does the dawn peak. The dusk peak of females slightly precedes the dusk peak of males. At dawn the activity peak of males slightly precedes that of the females. The observed asymmetry in the spacing of the peaks in relation to solar midnight can be explained if CORBET'S model (1965) is adopted, taking into consideration also the changes in the efficiency of a light trap at dusk and dawn. The few imagines caught during the first hours after sunset are regarded as consisting of survivors from an older emergence group and insects that have emerged and moulted early the same evening

A possible effect of obligatory parthenogenesis on the flight activity of some tropical larvo-aquatic insects

It is suggested that obligatory parthenogenesis may lead to a "decay" of the flight activity patterns in tropical species of Trichoptera and Ephemeroptera. Most species of Trichoptera and Ephemeroptera at Jinja, Uganda, fly between Sunset and sunrise. CORBET and TJ0NNELAND (1955) and TJ0NNELAND (1960) have shown that, with a few exceptions, these species have their flight activity peaks at twilight. Some species are eocrepuscular, showing a bimodal activity pattern, while others fly only at dusk or at dawn. Common to most species studied is that the periods of flight activity, as judged by the catches in light traps, are very restricted in time

Light trap catches of Neoperla spio (Newman) (Insecta, Plecoptera) at Jinja, Uganda

When studying the flight activity of some species of mayflies at Jinja, Uganda in 1956-8, records were also kept of the catches of Neoperla spio (NEWMAN). This stone-fly has a wide distribution in Africa (HYNES, 1952). Little is however known about certain aspects of its biology. And one of the questions that has been raised is -whether the species shows a seasonal or a continuous emergence. My observations, few as they are, might here be of interest. A Robinson mercury vapour light trap, design no. 862769 (ROBINSON, 1952) was employed to attract the insects. The trap was kept in the same position and locality, approximately 150 meters from the shore of Lake Victoria, for the whole of the time when the insects were collected. For details see TJØNNELAND (1960). During the first year (from 14th September 1956 till 6th September 1957) the trap was run every seventh night. The sampling was started at sunset and continued till sunrise the following morning. The trap was emptied every ten minutes, a sampling night yielding seventy two ten-minute samples

Observations on three species of East African Chironomidae (Diptera)

The three species of Chironomidae: C. tetraleucus, C. claripennis and T. balteatus are not common in the Jinja district, but they can all be collected by using a mercury vapour moth trap at night. C. tetraleucus has its flight activity peak just before sunrise. T. balteatus flies mainly just after sunset. C. claripennis seems to be active all through the night, and is caught by the trap when the wind is not too strong. All three species show some periodicity in the nightly catches over the lunar months. The effect of the intensity of the moonlight on the nightly catches of the three species has been discussed. The possibility that the moon has an effect on emergence is briefly mentioned. It is felt that a longer series of observations would be useful in order to solve the question of lunar periodicity of emergency’ from the lake. Until solved, it is considered advisable to regard the expression lunar periodicity as purely descriptive

Observations on nocturnal activity in a species of Mantispidae (Neuroptera)

During the study of the flight activity of certain species of Ephemeroptera at Jinja, Uganda in 1956-8, records were kept of specimens of a species of Mantispidae caught by a Robinson mercury vapour light trap from 14th September 1956 till 6th September 1957. During this time the •trap was run every seventh night. During each sampling night the trap was emptied every tenth minute from sunset to sunrise. Each sampling night thus yielded seventy two ten-minute samples

Å møte en helt ny verden. Minoritetsforeldres opplevelser av å ha et barn med nedsatt funksjonsevne : en kvalitativ studie

Bakgrunn: Mitt formål med masteroppgaven er å belyse hvordan minoritetsforeldre som har barn med nedsatt funksjonsevne opplever sin situasjon. Det å inneha minoritetsbakgrunn og funksjonsnedsettelse er i politiske dokumenter beskrevet som en «dobbel minoritetsstatus». Det er lite forskningsbasert kunnskap om dette feltet og med denne oppgaven ønsker jeg å bidra med å synliggjøre disse foreldrenes erfaringer og opplevelser. Problemstilling: Studiens problemstilling er tredelt. Jeg har en hovedproblemstilling og to underspørsmål.1) Hvordan opplever foreldre med minoritetsbakgrunn det å ha et barn med nedsatt funksjonsevne? Som utdypende spørsmål har jeg følgende; 1.1. Hvordan forholder de seg til egne følelser og til barnet? 1.2. Hvordan forholder de seg til andre nære relasjoner og hjelpeapparatet? Metode: Jeg har valgt kvalitativ studie med intervju av åtte familier fra fem ulike land. Intervjuene ble tatt opp på bånd og analysert inspirert av prinsippene i Grounded Theory. Analysemetoden er diskutert i forskerteam med spesialkompetanse innen GT. Resultat: I studien laget jeg fire hovedkategorier og en kjernekategori. Hovedkategoriene peker på fire ulike aspekt ved kjernekategorien; «å møte en helt ny verden». Hovedkategoriene «å legge egne reaksjoner på is» og «å forstå hva funksjonshemming innebærer» belyser samtidig den ene underproblemstillingen. I de to siste hovedkategoriene «å håndtere den praktiske hverdagen» og «å forholde seg til et hjelpeapparat» belyses også den andre underproblemstillingen. Diskusjon: Problemstillingen besvares med kjernekategorien «å møte en helt ny verden» og i diskusjonsdelen drøftes fremtredende trekk ved denne. Sentralt for den nye situasjonen familien befinner seg i er at den i stor grad oppleves som en ensom og isolert tilværelse. I forhold til egne følelser og til barnet så formidler mange at de ikke har behov for å snakke om hvordan de har det, å gå inn i egne følelser ville ikke hjelpe barnet, som var deres hovedfokus. Å bli møtt med varme og engasjement fra fagpersoner og sosialt nettverk er vesentlig for foreldrene, og er av betydning for hvordan de håndterer hverdagen. For at vi som fagpersoner kan bidra til at møte med den nye verden blir mer forståelig er kommunikasjon en viktig faktor, med kommunikasjon kan vi skape et meningsfullt samhandlingsrom. Konklusjon: Minoritetsforeldre som har barn med nedsatt funksjonsevne har med sin doble minoritetsstatus noen tilleggsutfordringer når de møter «en helt ny verden». De er i et nytt land, men mestrer ikke å ta ut sine egne følelser, men setter inn all oppmerksomhet på barnet. Mange av disse reaksjonene vil de dele med foreldre som er etnisk norske. Men det å ha et begrenset nettverk, kommunikasjonsutfordringer og liten oversikt over offentlige tilbud er eksempel på at de har det ekstra vanskelig. En fast kontaktperson som de kan ha tillit til og som bistår og veileder dem i forhold til hjelpeapparatet og som har oversikt over familiens behov er noe som mange av dem har etterspurt.My purpose with the thesis is to examine how minority parents who have children with disabilities experience their situation. There is little knowledge on this field and with this task, I want to contribute these parents' experiences. Both minority and disabled are in policy documents described as a "double minority status." Problem: The issue is divided into three. The main issue is: “How parents from minority groups experience having a child with disabilities?” The questions are: “How do they relate to their own feelings and the child”, and, “How do they relate to other close relationships and support system?” Method: A qualitative interview method has been used where 8 families from 5 different countries, have been interviewed. In the study, Grounded Theory was applied as the main research method. The analysis method is discussed in a research team with expertise in GT The results: The core category of the study became “meeting a whole new world”. This emerges from the four main categories. The main categories point to four different aspects of the core category. The main categories "to add their own reactions on ice" and "understanding what disability means" illuminate the first question. In the last two main categories "to deal with the everyday practice" and "to deal with the supporting service" also point to the second question. Discussion: This issue is answered with the core category "to meet a whole new world" and in this section prominent features will be discussed. Central to the new situation the family is in is that it is largely perceived as a lonely and isolated existence. In relation to their own feelings and the child they explain that they do not need to talk about how they feel, to enter into their own feelings would not help the child, which was their main focus. Being greeted with warmth and commitment from professionals and social networks are important for the parents, and its importance for how they handle their everyday life. As professionals we can contribute the families to meet and understand the new world better. Communication is an important factor; with communication we can create a meaningful interaction. Conclusion: Minority Parents who have children with disabilities have some additional challenges when facing "a whole new world." They are in a new country, and they don`t manage to take out their own feelings, but inserting all the attention on the child. Many of these reactions they share with parents who are ethnically Norwegian. But having a limited network, communication challenges and little information on public services give them problems. A coordinator who can assist and guide is something that many of them want.Master i rehabiliterin

Universitet og forskning i Sør-Afrika. Utfordringar etter apartheid og akademisk boikott

Dette notatet gir ein gjennomgang av universitets- og forskingssektoren i Sør-Afrika. Hovudutfordringane for universiteta i eit nytt og demokratisk Sør-Afrika blir identifisert, og forskingas rolle og organisering av denne blir vurdert. Til slutt gir notatet ein diskusjon av kva rolle norske universitet og utanlandsk støtte kan ha etter at den akademiske boikotten er heva

Electrical conductivity and thermopower of (1-x) BiFeO3 - xBi(0.5)K(0.5)TiO(3) (x=0.1, 0.2) ceramics near the ferroelectric to paraelectric phase transition

Ferroelectric BiFeO3 has attractive properties such as high strain and polarization, but a wide range of applications of bulk BiFeO3 are hindered due to high leakage currents and a high coercive electric field. Here, we report on the thermal behaviour of the electrical conductivity and thermopower of BiFeO3 substituted with 10 and 20 mol% Bi0.5K0.5TiO3. A change from p-type to n-type conductivity in these semi-conducting materials was demonstrated by the change in the sign of the Seebeck coefficient and the change in the slope of the isothermal conductivity versus partial pressure of O. A minimum in the isothermal conductivity was observed at ~10−2 bar O2 partial pressure for both solid solutions. The strong dependence of the conductivity on the partial pressure of O2 was rationalized by a point defect model describing qualitatively the conductivity involving oxidation/reduction of Fe3+, the dominating oxidation state of Fe in stoichiometric BiFeO3. The ferroelectric to paraelectric phase transition of 80 and 90 mol% BiFeO3 was observed at 648 ± 15 and 723 ± 15 °C respectively by differential thermal analysis and confirmed by dielectric spectroscopy and high temperature powder X-ray diffraction.Author preprin

Retorikken mot unionen â J.E. Sars som tidsskriftpolemiker

Tidsskriftet Ringeren (1898-1899) ble grunnlagt som et kamporgan mot unionen med Sverige. Redaksjonen besto av historikeren J.E. Sars, Bjørnstjerne Bjørnson og Sigurd Ibsen. Litteraturkritikeren Carl Nærup kom inn i redaksjonen i 1899-årgangen. Sars var imidlertid den som hadde skrevet mest poengtert om Norges union med Sverige i Venstre-tidsskrifter han tidligere hadde redigert, slik som Nyt Tidsskrift (1882-87) og Nyt Tidsskrift â Ny Række (1892-95). I Ringeren var det imidlertid Sigurd Ibsen som ledet an i stormløpet mot unionen. Men mye av det som ble brakt til torvs mot unionen med Sverige i Ringeren, var foregrepet av det Sars tidligere hadde skrevet. Formålet med denne lille artikkelen er ikke teoretisk, men å dokumentere noe av Sarsââ¬â¢ nasjonalistiske retorikk på 1880-tallet som en bakgrunn for 1905