127 research outputs found

    Interpretation of the value of human rights in the context of modern forms of legal understanding

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    A long-term discussion about legal understanding has identified some main approaches to defining its concept, in particular among them: natural law and positive law. In this context, the question of the value of human rights in the context of these types of legal understanding is fundamental to legal science. Considering the above, inter alia, it is also important to find out whether human rights are natural or whether they require formal recognition and consolidation, being positive. The aim of the study is to consider the main features of the interpretation of the value of human rights in the context of natural and positive types of legal understanding, as well as to compare them. Consideration of the subject of research was carried out within the framework of an integrated approach, which involves a combination of such special methods as structural-functional, comparative-legal and formal-legal analysis methods. The article examines the two most popular types of legal understanding, in particular, natural law and legal positivism. According to positive law, human rights should be enshrined in laws, regulations and sources of legal norms. It should be noted that in the modern world, law, which includes human rights, is understood as a system of legal norms that are issued and protected by the state, which to a greater extent reflects a positive legal understanding. The essence of the theory of natural law is that in addition to positive law, which is created by the state, there is a common natural law for all people, standing above positive law. That is why natural law is realized in positive law and becomes its content. Thus, human rights and freedoms enshrined in the generally recognized principles and norms of international law have become the criterion of the legal basis for national systems of positive law

    New electrochemically improved tetrahedral amorphous carbon films for biological applications

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    Carbon based materials have been frequently used to detect different biomolecules. For example high sp3 containing hydrogen free diamond-like carbon (DLC) possesses many properties that are beneficial for biosensor applications. Unfortunately, the sensitivities of the DLC electrodes are typically low. Here we demonstrate that by introducing topography on the DLC surface and by varying its layer thickness, it is possible to significantly increase the sensitivity of DLC thin film electrodes towards dopamine. The electrode structures are characterized in detail by atomic force microscopy (AFM) and conductive atomic force microscopy (C-AFM) as well as by transmission electron microscopy (TEM) combined with electron energy loss spectroscopy (EELS). With cyclic voltammetry (CV) measurements we demonstrate that the new improved DLC electrode has a very wide water window, but at the same time it also exhibits fast electron transfer rate at the electrode/solution interface. In addition, it is shown that the sensitivity towards dopamine is increased up to two orders of magnitude in comparison to the previously fabricated DLC films, which are used as benchmarks in this investigation. Finally, it is shown, based on the cyclic voltammetry measurements that dopamine exhibits highly complex behavior on top of these carbon electrodes.The authors T.L, V.P., S.S., T.P., and J.K., would like to acknowledge the National Agency for Technology and Innovation (grant number 211488) and Aalto University (grant number 902380) for the financial support

    Electrochemical reactions of catechol, methylcatechol and dopamine at tetrahedral amorphous carbon (ta-C) thin film electrodes

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    The electrochemical reactions of dopamine, catechol and methylcatechol were investigated at tetrahedral amorphous carbon (ta-C) thin film electrodes. In order to better understand the reaction mechanisms of these molecules, cyclic voltammetry with varying scan rates was carried out at different pH values in H2SO4 and PBS solutions. The results were compared to the same redox reactions taking place at glassy carbon (GC) electrodes. All three catechols exhibited quasi-reversible behavior with sluggish electron transfer kinetics at the ta-C electrode. At neutral and alkaline pH, rapid coupled homogeneous reactions followed the oxidation of the catechols to the corresponding o-quinones and led to significant deterioration of the electrode response. At acidic pH, the extent of deterioration was considerably lower. All the redox reactions showed significantly faster electron transfer kinetics at the GC electrode and it was less susceptible toward surface passivation. An EC mechanism was observed for the oxidation of dopamine at both ta-C and GC electrodes and the formation of polydopamine was suspected to cause the passivation of the electrodes.Authors wish to acknowledge the financial support by the Finnish Parkinson Foundation (T.P.), the Finnish Funding Agency for Innovation (grant number 211488) (T.P., S.S. and T.L.), the Academy of Finland (grant number 285015) (T.L.) and MINECO project CTQ2013-44083-P (J.F.M.)

    ETHNIC PATTERNS OF ARTERIAL PRESSURE DAILY PROFILE, AUTONOMIC REGULATION OF CARDIAC FUNCTION AND METABOLIC SYSTEM IN PREGNANT WOMEN WITH ARTERIAL HYPERTENSION

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    Arterial hypertension (AH) is observed in 4-8 % of pregnant women. Even light previous AH increases the risk of pregnancy and delivery complications up to twice, thereby significantly degrading the prognosis of pregnancy and childbirth. The aim of the study is to evaluate the main cardiovascular and metabolic patterns in pregnant women with AH in depends on their ethnicity. We studied the pregnancy courses in 295 pregnant women with AH. The 1st group was 138 Buryat women and the 2nd group were Russian. In all patients we evaluated hematological, biochemical and hemostatic data as soon as perform daily monitoring of blood pressure. We observed some ethnic patterns of arterial hypertension. Buryat women had dyslipidemia and elevated fibrinogen. Also these patients demonstrated elevation of the value of morning rise in diastolic blood pressure during (DBP) their pregnancies with the most significant value of variability of night DBP. We found the direct link of serum fibrinogen with night DBP в In the 2nd trimester of pregnancy

    Lipid peroxidation and antioxidant protection systems in pregnant women consuming alcohol in small and moderate doses

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    The analysis of scientific researches shows that the problem of alcohol consumption (beer, dry wine, champagne), in small doses during pregnancy has been actually disregarded for many years. So the problem has become quite urgent, especially in Russia. In order to determine the effect of alcohol on pregnancy and childbirth, women and babies were divided into three groups. Group 1 (n = 101) (control group) included women who did not use alcohol during pregnancy. Group 2 (n = 75) included drinking women whose alcohol consumption during pregnancy was less than 2 doses or 750 ml. Group 3 (n = 33) included moderately drinking women whose alcohol consumption during pregnancy ranged from 3 to 11 doses (from 750 ml to 3850 ml). The study of the lipid peroxidation-antioxidant protection system as a sensitive marker of integrated health disorders in women, consuming alcoholic beverages in a prenatal period, was conducted. It was indicated that a statistically significant decrease in overall antioxidant activity was found in the context of lipid peroxidation activation in women consuming low-alcohol drinks, which demonstrates a lack of functioning of lipid peroxidation system and oxidative stress regardless of the dose of low-alcohol drinks

    FIELD ELECTRON EMISSION FROM A NICKEL-CARBON NANOCOMPOSITE

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    The field-emission properties of nanocomposite films comprised of 10 -20 nm-sized nickel particles immersed in a carbon matrix were investigated. The films were deposited onto silicon substrates by means of a metal-organic chemical vapor deposition (MOCVD) method. The composite's structure was controlled via deposition process parameters. Experiments demonstrated that the composite films can efficiently emit electrons, yielding current densities of up to 1.5 mA/cm 2 in electric fields below 5 V/µm. Yet, good emission properties were only shown in films with low effective thickness, when nickel grains did not form a solid layer, but left a part of the substrate area exposed to the action of the electric field. This phenomenon can be naturally explained in terms of the two-barrier emission model

    Tetrahydropyrazolo[1,5-a]Pyrimidine-3-Carboxamide and N-Benzyl-6′,7′-Dihydrospiro[Piperidine-4,4′-Thieno[3,2-c]Pyran] analogues with bactericidal efficacy against Mycobacterium tuberculosis targeting MmpL3

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    Mycobacterium tuberculosis is a major human pathogen and the causative agent for the pulmonary disease, tuberculosis (TB). Current treatment programs to combat TB are under threat due to the emergence of multi-drug and extensively-drug resistant TB. As part of our efforts towards the discovery of new anti-tubercular leads, a number of potent tetrahydropyrazolo[1,5-a]pyrimidine-3-ca​rboxamide(THPP) and N-benzyl-6′,7′-dihydrospiro[piperidine-4,​4′-thieno[3,2-c]pyran](Spiro) analogues were recently identified against Mycobacterium tuberculosis and Mycobacterium bovis BCG through a high-throughput whole-cell screening campaign. Herein, we describe the attractive in vitro and in vivo anti-tubercular profiles of both lead series. The generation of M. tuberculosis spontaneous mutants and subsequent whole genome sequencing of several resistant mutants identified single mutations in the essential mmpL3 gene. This ‘genetic phenotype’ was further confirmed by a ‘chemical phenotype’, whereby M. bovis BCG treated with both the THPP and Spiro series resulted in the accumulation of trehalose monomycolate. In vivo efficacy evaluation of two optimized THPP and Spiro leads showed how the compounds were able to reduce >2 logs bacterial cfu counts in the lungs of infected mice

    DISCRIMINANT ANALYSIS AS A METHOD OF DETERMINATION OF GESTATIONAL PERIOD IN DRINKING WOMEN AND HEALTH CONDITION OF THEIR NEWBORNS

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    The article presents the methods of mathematical analysis of the impactof alcohol on pregnancy, childbirth, postpartum and the state of health of newborn state. With the help of this analysis we revealed informative diagnostic features that let determine the effect of alcohol on pregnancy, childbirth, postpartum and newborn state: the use of alcohol before pregnancy once per month; alcohol consumption before pregnancy 2-4 times per month; smoking during pregnancy; abortion history; anemia during pregnancy; congenital heart disease on the third ultrasound screening; abnormal birth activity; subinvolution of uterus in the postpartum period; newborn gender; gestational age; prematurity and generally heavy state of a newborn. Linear classification function can be calculated by the formula 1.2. Canonical linear discriminant function can be calculated from equation [formula 3]. Diagnostic accuracy of decision rules in the middle is quite high - 76,69 %, in the first group - 75,7 %, in the second group - 77,6 %

    Influence of factors of solar and geomagnetic activity on development of spontaneous 82 labor activity

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    Studies of recent decades have proved the effect on the human body a number of physical factors that are caused by the influence of solar corpuscular streams that change the state of the magnetosphere. The least studied problem is the influence of heliogeophysical factors and solar activity on different periods of organism development, from conception to birth. There is no data on the influence of magnetic storms on spontaneous labor, which was the purpose of this study. Solar activity indicators are presented by the Space Weather Prediction Center (SWPC) of the US National Oceanic and Atmospheric Administration (NOAA: www.swpc.noaa.gov). The results of correlation analysis between spontaneous labor activity of 306 pregnant women in the period of 1.01-08.02.2013 depending on solar activity (Wolf numbers), radio emission flux at the wavelength of 10.7 cm and planetary index (Ap-index) characterizing the physical state of the Earth's magneticfield are analyzed. Reliable correlation between the number of urgent delivery and the flow of radio emission at a wavelength of 10.7 cm and the Wolf numbers was not found. Increase in the activity of spontaneous labor by 2.3 times (r = 0.43; p < 0.05) was recorded three days after the magnetic storm (Ap-index = 21nTl) compared to days calm in geomagnetic terms. The data showed a significant role of dynamics of external factors in the onset of labor
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