Search results for "OCT"

Automated Diagnostics of Retinal Pathologies Using OCT Volumes

2020

The leading cause of blindness in the population could mostly be the degeneration of the retina caused by the diabetic-related problems and the aging issue. Diabetic retinopathy (DR) and diabetic macular edema (DME) are the main direct causes of vision problems in the labor age citizens of most advanced countries. The elevated number of diabetic people globally indicates that DME and DR will remain to be the principal factor to partial or total vision loss, which affects the lives quality of patients for many years to come and threaten their lives. Therefore, early detection followed by fast treatment procedures of persons with diabetic-related diseases is significant in preventing optical …

Response to Cardiovascular Autonomic Dysfunction as a Link Between Insulin Resistance and Nocturnal Blood Pressure Elevation

2008

We welcome the interest that Perciaccante1 has shown in our research on the impact of obesity and insulin resistance in nocturnal blood pressure elevation in children and adolescents.2 We agree with his hypothesis that abnormal cardiovascular autonomic function is a potential link between insulin resistance …

Impacts of ambient temperature and clutch size on incubation behaviour onset in a female-only incubator songbird

2021

Ambient temperature is assumed to be the major cue used by passerines to synchronize their laying and hatching dates to the expected peak of prey availability. While laying eggs, females are still able to fine-tune their hatching date following increasing or decreasing patterns of ambient temperature, mostly via changes in incubation onse t. The onset of incubation behaviour in relation to the laying sequence could have later conse- quences for the duration of the incubation period and the extent of hatching asynchrony. Clutch size is also known to affect incubation patterns and might therefore condition potential responses to changing temperatures. In this study we assessed the association…

Application of viability PCR to discriminate the infectivity of hepatitis A virus in food samples.

2015

Abstract Transmitted through the fecal–oral route, the hepatitis A virus (HAV) is acquired primarily through close personal contact and foodborne transmission. HAV detection in food is mainly carried out by quantitative RT-PCR (RT-qPCR). The discrimination of infectious and inactivated viruses remains a key obstacle when using RT-qPCR to quantify enteric viruses in food samples. Initially, viability dyes, propidium monoazide (PMA) and ethidium monoazide (EMA), were evaluated for the detection and quantification of infectious HAV in lettuce wash water. Results showed that PMA combined with 0.5% Triton X-100 (Triton) was the best pretreatment to assess HAV infectivity and completely eliminate…

Synthesis and structural studies by infrared and Mössbauer spectroscopy of adducts of tin(IV) and organotin(IV) derivatives with 2,2′-azopyridine

1985

Abstract A number of complexes have been prepared by the reaction between 2,2′-azopyridine(AZP) and tin(IV) halides and organotin(IV) halides, and characterized by elemental analysis and infrared and variable temperature 119Sn Mossbauer spectroscopies. All of the new compounds have 1:1 stoichiometry, with the AZP ligand occupying two coordination sites by bonding through one of the ring and one of the azo group nitrogen atoms, to give rise to distorted octahedral structures. In the diorganotin complexes the two organic groups occupy trans positions. The infrared and Mossbauer spectroscopic data suggest that these compounds are monomeric in the solid state.

Astroteoloģiski prātojumi bioloģiskā universa hipotēzes un ārpuszemes dzīvības meklējumu perspektīvā

Raksts pamatā ir veltīts zinātnieku atziņām par inteliģentas ārpuszemes dzīvības iespējamību, izdarot no šādas hipotēzes tālākus konstruktīvus teoloģiskus secinājumus. Attiecīgi rakstam ir divas galvenās daļas – zinātniski-teorētiskā un konstruktīvi-teoloģiskā, un tas pieder zinātnes un reliģijas dialoga jomai. Dzīvība rakstā definēta mūsdienu bioloģijas izpratnē. Tiek apskatīti dzīvības rašanās scenāriji, ieskaitot spontānās rašanās un „panspermijas” alternatīvas, kā arī tiek apsvērtas „bioloģiskā determinisma” un no tā izrietošā „bioloģiskā universa” hipotēzes, kuru patiesuma gadījumā universā jābūt civilizācijām un būtnēm, kas attīstījušās nesalīdzināmi augstāk nekā cilvēki. Raksta teolo…

WHY IS IT NOT SO EASY FOR A PRESENT-DAY PHYSICIST TO BE GENUINELY A CHRISTIAN?

2021

A short description of the relationship between Physics, Philosophy and Theology is: Physics neglects or passes by Natural Realism, which is the origin of Philosophy. In turn, Natural Realism is backed up by Judeo-Christian revelation. Therefore, Physics neglects or passes by Theology. That relationship between Physics and Theology is widely used as a background for exercising an intense pressure on Theology. The defence of Theology should begin by pointing out certain shortcomings of Physics and formulating a philosophical control of these shortcomings. This is tantamount to turning Physics instead of Theology into a “site under construction”. Only a “controlled” Physics and Theology are a…

A Case of Human Reason’s Liberation from its Positivist Self- Limitation. The Return of Philosophy Through the Solution of a Problem of Physics is a …

2020

The idea of human reason’s positivist self-limitation is used by Benedict XVI and others to characterize an aspect of the long-lasting intellectual situation of Western technological-scientific civilization. Liberating human reason from its positivist self-limitation requires, in general, an overcoming of the historical process of Natural Science’s drifting away from Philosophy. In the case of Physics, it requires a point where both physics and philosophy have to deal together with the same problem. This paper first identifies a problem caused by specific reductionisms in Physics. These reductionisms cause certain deformations of physical knowledge, which in turn makes it desirable for phys…

Tro och Naturvetenskap - den förlorade harmonin

2004

In Christian Theology, on the one hand, and Physics, on the other, exist different views about the age of the universe, the age of the earth, and about particularities of other historical events. Obviously, this is a serious obstacle for a harmonious relationship between both. Much more serious, however, is the difference between the respective epistemological climates. The epistemological climate of Theology is ”luminous” because it relies on common sense. On the contrary, the epistemological climate of Physics is ”dark”, insofar it deviates from common sense. The goal of the article is to emphasize the importance of addressing that difference. The text is in Swedish.

Warum ist es nicht so einfach für einen heutigen Physiker, durch und durch Christ zu sein?

Eine kurze Beschreibung des Verhältnisses von Physik, Philosophie und Theologie lautet: Die Physik vernachlässigt oder umgeht den natürlichen Realismus, Ursprung allen Philosophierens. Der natürliche Realismus wird wiederum durch die jüdisch-christliche Offenbarung gestützt. Daher vernachlässigt oder umgeht die Physik die Theologie. Diese Beziehung zwischen Physik und Theologie wird häufig als Hintergrund für die Ausübung eines starken Drucks auf die Theologie verwendet. Die Verteidigung der Theologie sollte damit beginnen, auf bestimmte Mängel der Physik hinzuweisen und eine philosophische Kontrolle dieser Mängel zu formulieren. mit wird die Physik statt der Theologie zur "Baustelle". Nur …