Search results for "TOD"
showing 10 items of 4523 documents
Slāpekli saturošu savienojumu hidrofīlās mijiedarbības likumsakarības šķidruma hromatogrāfijā (HILIC) režīmā
2010
Elektroniskā versija nesatur pielikumus
Intestinal Trematode Infections
2014
Intestinal trematodes are among the most common types of parasitic worms. About 76 species belonging to 14 families have been recorded infecting humans. Infection commonly occurs when humans eat raw or undercooked foods that contain the infective metacercariae. These parasites are diverse in regard to their morphology, geographical distribution and life cycle, which make it difficult to study the parasitic diseases that they cause. Many of these intestinal trematodes have been considered as endemic parasites in the past. However, the geographical limits and the population at risk are currently expanding and changing in relation to factors such as growing international markets, improved tran…
Pedagogical approaches for e-assessment with authentication and authorship verification in Higher Education
2019
Checking the identity of students and authorship of their online submissions is a major concern in Higher Education due to the increasing amount of plagiarism and cheating using the Internet. The literature on the effects of e-authentication systems for teaching staff is very limited because it is a novel procedure for them. A considerable gap is to understand teaching staff' views regarding the use of e-authentication instruments and how they impact trust in e-assessment. This mixed-method study examines the concerns and practices of 108 teaching staff who used the TeSLA—Adaptive Trust-based e-Assessment System in six countries: the UK, Spain, the Netherlands, Bulgaria, Finland and Turkey.…
Nonperturbative renormalization in coordinate space
2003
We present an exploratory study of a gauge-invariant non-perturbative renormalization technique. The renormalization conditions are imposed on correlation functions of composite operators in coordinate space on the lattice. Numerical results for bilinears obtained with overlap and O(a)-improved Wilson fermions are presented. The measurement of the quark condensate is also discussed.
A Simple Noise Model with Memory for Biological Systems
2005
A noise source model, consisting of a pulse sequence at random times with memory, is presented. By varying the memory we can obtain variable randomness of the stochastic process. The delay time between pulses, i. e. the noise memory, produces different kinds of correlated noise ranging from white noise, without delay, to quasi-periodical process, with delay close to the average period of the pulses. The spectral density is calculated. This type of noise could be useful to describe physical and biological systems where some delay is present. In particular it could be useful in population dynamics. A simple dynamical model for epidemiological infection with this noise source is presented. We …
Fasciola spp: Mapping of the MF6 epitope and antigenic analysis of the MF6p/HDM family of heme-binding proteins
2017
MF6p/FhHDM-1 is a small cationic heme-binding protein which is recognized by the monoclonal antibody (mAb) MF6, and abundantly present in parenchymal cells and secreted antigens of Fasciola hepatica. Orthologs of this protein (MF6p/HDMs) also exist in other causal agents of important foodborne trematodiasis, such as Clonorchis sinensis, Opisthorchis viverrini and Paragonimus westermani. Considering that MF6p/FhHDM-1 is relevant for heme homeostasis in Fasciola and was reported to have immunomodulatory properties, this protein is expected to be a useful target for vaccination. Thus, in this study we mapped the epitope recognized by mAb MF6 and evaluated its antigenicity in sheep. The sequenc…
Áreas y suelos: El tamaño de los yacimientos de superficie. Una propuesta metodológica
2011
En los estudios sobre el patrón de asentamiento y en los análisis del territorio, la variable"tamaño" del asentamiento juega un papel importante. Considerada como"proxy" de la población, no siempre resulta fácil de calcular en ausencia de estructuras arqueológicas construidas: aterrazamientos o fortificaciones. En este trabajo se presenta una aproximación al cálculo de dicha variable en los asentamientos de superficie caracterizados simplemente por la dispersión de materiales, que toma como punto de partida la correlación entre aquélla y la presencia de los horizontes edáficos ah. La reciprocidad positiva de ambos factores permite sugerir diversas hipótesis sobre la relación entre la formac…
Susceptibility of eye fluke-infected fish to predation by bird hosts.
2005
Host manipulation by trophically transmitted parasites may predispose infected hosts to predation and in this way enhance parasite transmission. In most study systems, however, the evidence comes from laboratory studies, and therefore knowledge of the effect of manipulation on parasite transmission efficiency in the wild is still limited. Here we examined the effect ofDiplostomum spathaceum(Trematoda) eye flukes on the susceptibility of fish intermediate hosts to predation by bird definitive hosts. Our earlier studies have shown that the parasite alters fish phenotype and increases their susceptibility to artificial predation under laboratory conditions. In the present field study, we allow…
Stresa pārvarēšanas stratēģiju saistība ar pozitīvajām ilūzijām
2015
Pētījumā mērķis ir noskaidrot saistības starp stresa pārvarēšanas stratēģijām un pozitīvajām ilūzijām. Tiek argumentēts, ka pozitīvās ilūzijas paaugstina indivīda psiholoģisko labklājību. Pozitīvo ilūziju netiešai mērīšanai tika adaptēta jauna metode – “Sociāli vēlamas atbildēšanas aptauja”. Stresa pārvarēšanas stratēģiju mērīšanai tika izmantota latviešu valodā adaptētā - “Stresa pārvarēšanas stratēģiju aptauja”. Pētījumā piedalījās 155 respondenti, vecumā no 19 līdz 36 gadiem. Atklājās, ka nepastāv nozīmīgas korelācijas starp konstruktiem, tādēļ hipotēze tiek noraidīta. Tiek secināts, ka abi konstrukti veicina psiholoģiskās labklājības celšanu, tomēr to darbības principi ir paralēli un sa…
Latvijas vēsturnieku otrais kongress (IV pasaules latviešu zinātnieku kongress, Rīga, 2018. gada 18 un 19. jūnijs): tēzes
2018
II Latvijas vēsturnieku kongress notika 2018. gada 18. un 19. jūnijā IV Pasaules latviešu zinātnieku kongresa ietvaros. Vēsturnieku kongresa tēžu krājumā ietverti kongresā nolasīto referātu kopsavilkumi. II Vēsturnieku kongress pretstatā ierastajai norises formai (paralēlas sekcijas, kurās zinātnieki iepazīstina ar saviem jaunākajiem sasniegumiem) bija iecerēts kā diskusija par Latvijas vēsturei aktuālām problēmām, piedaloties gan tiem, kas vāc un uzglabā vēstures liecības, gan tiem, kuru primārais uzdevums ir tās pētīt, gan arī tiem, kuri tās izmanto, izglītojot jauno paaudzi un sabiedrību. Kongresā noritēja diskusijas par vēsturnieku kongresu lomu un nepieciešamību; par vēstures zinātnes …