scholarly journals Vertical profile of polycyclic aromatic hydrocarbons in the core sediment found in Langkawi, Kedah

2021 ◽  
Vol 42 (3(SI)) ◽  
pp. 849-856
Author(s):  
R.C. Terence ◽  
◽  
M.A. Masni ◽  
Keyword(s):  
Rural Area ◽  
Sediment Core ◽  
Vertical Profile ◽  
Core Sediment ◽  
The Core ◽  
Polycyclic Aromatic ◽  
Molecular Ratios ◽  
The Individual ◽  
Source Of Pollution

Aim: To determine the concentration of PAHs by layers in each core sediment around one of Malaysia's tourism-oriented areas and to distinguish and classify the origin of PAHs in core sediments using index of molecular ratios. Methodology: The individual compounds and sources of polycyclic aromatic hydrocarbon (PAHs) were studied in 72 cm and 54 cm long sediment core, each that were taken in the Kuah Jetty and a rural area between Tanjung Ayer and Tanjung Batu Kulat of Langkawi Island. A total of 12 PAHs were determined and quantified by gas chromatography coupled with mass spectrometry (GC-MS). Results: Kuah Jetty, Langkawi's total PAH concentrations of sediment core layers ranged from 45.82 ng g-1 to 252.43 ng g-1. Furthermore, the total PAH concentrations of the sediment core layers from the rural area between Tanjung Ayer and Tanjung Batu Kulat ranged between 28.97 ng g-1 to 312.20 ng g-1. Interpretation: The potential application of a combination of molecular ratios and individual concentrations of PAH in determining the origin and source of pollution in sediments resulted in the determination of low to moderate pollution and indicated mixed sources of PAHs in the study area.

Determination of Polycyclic Aromatic Hydrocarbons in Smoked Pork by Effect-Directed Bioassay with Confirmation by Chemical Analysis

2008 ◽  
Vol 71 (5) ◽  
pp. 993-999 ◽  
Author(s):  
KERSTIN KUHN ◽  
BERNHARD NOWAK ◽  
GÜNTER KLEIN ◽  
ANDREAS BEHNKE ◽  
ALBRECHT SEIDEL ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Chemical Analysis ◽  
Aromatic Hydrocarbons ◽  
Luciferase Expression ◽  
Aryl Hydrocarbon ◽  
Polycyclic Aromatic ◽  
The Individual ◽  
Effect Directed Analysis

Polycyclic aromatic hydrocarbons (PAHs) are generated during smoke curing and other heating treatments of food and represent a large class of chemical pollutants including a number of carcinogens. At present, PAHs are frequently detected by costly and time-consuming chemical analysis. Effect-directed in vitro cell–based bioassays of contaminants can offer a rapid, sensitive, and relatively inexpensive alternative for screening of contaminants in comparison to instrumental analysis. They enable estimation of total biological activity of all compounds acting through the same mode of binding. The aryl hydrocarbon receptor as a binding site plays an important role in PAH-induced carcinogenesis. The in vitro chemical-activated luciferase expression assay (using conditions to detect PAH) was investigated for its applicability for effect-directed analysis of PAH levels in smoked meat. There was an intra-assay variability of 0 to 15% and a mean coefficient of variation of 25% (3 to 50%) for the cleanup and bioassay analysis of the smoked pork samples. There was a correlation between the total responses of the bioassay and the individual amounts of the PAHs with a high molecular weight. The comparison of 2,3,7,8-tetrachlorodibenzo-p-dioxin and benzo[k]fluoranthene used as standard in the in vitro chemical-activated luciferase expression assay resulted in benzo[k]fluoranthene being able to be used as an alternative, nontoxic standard in the bioassay. This bioassay is an applicable effect-directed functional prescreening method for the analysis of PAHs in smoked meat and appears to have potential in being used for food control in the future.

Vertical profile of polycyclic aromatic hydrocarbons in a sediment core from a reservoir in Osaka City

2006 ◽  
Vol 52 (1) ◽  
pp. 123-129 ◽  
Author(s):  
Miho Ishitake ◽  
Hiroshi Moriwaki ◽  
Kenshi Katahira ◽  
Osamu Yamamoto ◽  
Kenshiro Tsuruho ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Sediment Core ◽  
Aromatic Hydrocarbons ◽  
Vertical Profile ◽  
Polycyclic Aromatic

scholarly journals REFLEXÕES CRÍTICO-ONTOLÓGICAS SOBRE INDIVÍDUO E EDUCAÇÃO NA PERSPECTIVA DA EMANCIPAÇÃO HUMANA

2015 ◽  
Vol 22 (2) ◽  
pp. 16
Author(s):  
Betânea Moreira de Moraes ◽  
Frederico Jorge Ferreira Costa ◽  
Ruth Maria de Paula Gonçalves
Keyword(s):  
Human Nature ◽  
Second Phase ◽  
Core Business ◽  
The Core ◽  
Effective Role ◽  
Full Life ◽  
The Individual ◽  
Individual Education

O artigo trata de três questões centrais: 1) o que é indivíduo; 2) o que é educação; 3) as relações entreindivíduo e educação. Nesse sentido, buscamos inicialmente trazer para o debate a concepção naturalizada emnossas consciências de que os indivíduos são essencialmente egoístas, competidores, ou seja, que o egoísmo e oato de competir são inerentes à essência humana – Homo homini lupus –, daí a impossibilidade de superação daexploração do homem pelo homem. No segundo momento, intentamos discutir a atividade essencial da educaçãoe o seu real papel na formação do indivíduo. Por fim, problematizamos a concepção de atividade pedagógica comoprática redentora geral, isto é, questionamos a concepção de educação como a verdadeira tábua de salvação,capaz de sanar todas as formas de miséria vigentes em nossos dias. É, pois, no entendimento da contradição quemarca a determinação onto-histórica da educação: em seu sentido universal e instituída e historicamente determinada,que apanhamos o lugar e o papel efetivo da educação no processo de constituição do indivíduo livre e deuma vida plena de sentido, qual seja: uma formação assente na luta pela superação da exploração do homem pelohomem.Palavras-chave: Indivíduo. Educação. Ontologia do ser social. REFLECTIONS CRITICAL-ONTOLOGICAL ON INDIVIDUAL AND EDUCATION INVIEW OF HUMAN EMANCIPATIOAbstract: The article deals with three central questions: 1) what is individual; 2) What is education; 3) the relationshipbetween the individual and education. In this sense, we seek to initially bring to the debate the naturalizedconception in our consciousness that individuals are essentially selfish, competitors, or that selfishness and theact of competing are inherent in human nature – Homo homini lupus – there the impossibility of overcoming the exploitationof man by man. In the second phase, intend to discuss the core business of education and its role in theformation of the individual; finally, we question the design of pedagogical activity as general redemptive practice,that is, question the concept of education as the true lifeline, able to resolve all existing forms of poverty today. It istherefore, according to the contradiction that marks the onto-historical determination of education: in its universaland established and historically determined sense that caught the place and the effective role of education in thefree individual constitution process and a full life of meaning, namely, training based on the struggle to overcome theexploitation of man by man.Keywords: Individual. Education. Ontology marxian. REFLEXIONES CRÍTICO-ONTOLÓGICA SOBRE EL INDIVIDUO Y LA EDUCACIÓNEN LA PERSPECTIVA DE EMANCIPACIÓN HUMANAResumen: El artículo se ocupa de tres cuestiones centrales: 1) ¿Qué es individuo?; 2) ¿Qué es la educación?;3) las relaciones entre el individuo y la educación. En este sentido, buscamos, inicialmente, traer para el debate laconcepción naturalizada en nuestras conciencias de que los individuos son esencialmente egoístas, competidores,o sea, que el egoísmo y el acto de competir son inherentes a la esencia humana – Homo homini lupus – esta esla concepción de la imposibilidad de superación de la explotación del hombre por el hombre. En el segundo momento,intentamos discutir la actividad esencial de la educación y su real papel en la formación del individuo. Porfin, cuestionamos la concepción de educación como la verdadera línea de salvación, capaz de resolver todas lasformas de pobreza existentes en nuestros días. Es, por lo tanto, en el entendimiento de la contradicción que marcala determinación histórica onto-histórica de la educación: en su sentido universal y establecido y históricamentedeterminada, que cogimos el lugar y el papel efectivo de la educación en el proceso de constitución del individuolibre y de una vida plena de sentido, cual sea: una formación basada en la lucha por la superación de la exploracióndel hombre por lo hombre.Palabras clave: Individuo. Educación. Ontología del ser social.

Imaging of ribosomal RNA-protein interactions by dark-field STEM

1989 ◽  
Vol 47 ◽  
pp. 250-251
Author(s):  
M. Boublik ◽  
V. Mandiyan ◽  
S. Tumminia ◽  
J.F. Hainfeld ◽  
J.S. Wall
Keyword(s):  
Nucleic Acid ◽  
16S Rrna ◽  
Dark Field ◽  
Radius Of Gyration ◽  
Central Domain ◽  
The Core ◽  
16S Rna ◽  
30S Subunit ◽  
Core Particles

Success in protein-free deposition of native nucleic acid molecules from solutions of selected ionic conditions prompted attempts for high resolution imaging of nucleic acid interactions with proteins, not attainable by conventional EM. Since the nucleic acid molecules can be visualized in the dark-field STEM mode without contrasting by heavy atoms, the established linearity between scattering cross-section and molecular weight can be applied to the determination of their molecular mass (M) linear density (M/L), mass distribution and radius of gyration (RG). Determination of these parameters promotes electron microscopic imaging of biological macromolecules by STEM to a quantitative analytical level. This technique is applied to study the mechanism of 16S rRNA folding during the assembly process of the 30S ribosomal subunit of E. coli. The sequential addition of protein S4 which binds to the 5'end of the 16S rRNA and S8 and S15 which bind to the central domain of the molecule leads to a corresponding increase of mass and increased coiling of the 16S rRNA in the core particles. This increased compactness is evident from the decrease in RG values from 114Å to 91Å (in “ribosomal” buffer consisting of 10 mM Hepes pH 7.6, 60 mM KCl, 2 m Mg(OAc)2, 1 mM DTT). The binding of S20, S17 and S7 which interact with the 5'domain, the central domain and the 3'domain, respectively, continues the trend of mass increase. However, the RG values of the core particles exhibit a reverse trend, an increase to 108Å. In addition, the binding of S7 leads to the formation of a globular mass cluster with a diameter of about 115Å and a mass of ∽300 kDa. The rest of the mass, about 330 kDa, remains loosely coiled giving the particle a “medusa-like” appearance. These results provide direct evidence that 16S RNA undergoes significant structural reorganization during the 30S subunit assembly and show that its interactions with the six primary binding proteins are not sufficient for 16S rRNA coiling into particles resembling the native 30S subunit, contrary to what has been reported in the literature.

ПСИХОЛОГІЧНА ДЕТЕРМІНАЦІЯ ДОМІНУЮЧОГО ІНСТИНКТУ У КОНСТРУКТИВНІЙ САМОРЕАЛІЗАЦІЇ ЖІНОК

1970 ◽  
Vol 6 (1) ◽  
pp. 184-193
Author(s):  
Ольга Віговська
Keyword(s):  
Human Life ◽  
Healthy Children ◽  
Self Disclosure ◽  
Self Identity ◽  
Social Nature ◽  
Self Actualization ◽  
Rational Organization ◽  
The Individual ◽  
Age Range

У статті теоретично обґрунтовано феномен конструктивного самозбереження особистості як ознаки самоактуалізації, розкриття власного потенціалу і побудови перспективи розвитку особистості та емпірично виявлено ознаки психологічної детермінації домінуючого інстинкту у конструктивній самореалізації жінок з різним соціальним статусом. Зазначено, що проблема самозбереження асоціюється з особливостями прояву інстинкту самозбереження людини, але потреби вищого порядку зумовлюють соціальну природу її поведінки, яка локалізована у найвищій точці самореалізації. Теоретично обгрунтовано, що самореалізація визначає тенденцію раціональної організації життя людини та проявляється у її почутті задоволеністю життям. З’ясовано, що психологічну основу конструктивного самозбереження становлять індивідуально-типологічні характеристики людини, які відображають психофізіологічні та психосоціальні резерви самореалізації особистості. Розроблена програма емпіричного дослідження, а також комплекс використаних методів математичної обробки результатів дослідження дає змогу конкретизувати психологічний зміст детермінації домінуючого інстинкту у конструктивній самореалізації жінок вікового діапазону 35-45 років та з різним соціальним статусом. У жінок, які виховують проблемну (хвору) дитину, домінує інстинкт "егофільного типу", що виражається у їх надмірному егоцентризмі і супроводжується низькими показниками самоактуалізації, на відміну від досліджуваних жінок, які виховують здорових дітей і у яких на фоні вираженої тенденції до самоактуалізації домінує базовий інстинкт "дослідницького типу" та "лібертофільного типу". This article theoretically proves constructive phenomenon of self identity as signs of self-disclosure own potential and prospects of development of individual construction. In addition, it empirically showes signs of psychological determination of the dominant instinct in a constructive self-determination of women with different social statuses. It was noted that the issue of self-preservation is associated with the peculiarities of manifestation of self-preservation instinct of man, but it needs higher-order cause social nature of the behavior that is localized at the highest point of self-realization. It theorized that self-realization determines the trend of rational organization of human life and manifests itself in its sense of life satisfaction. It was found that the psychological basis of constructive self-preservation of the individual make individually-typological characteristics of a person that reflect physiological and psychosocial reserves of self-realization. The developed program of empirical research, as well as the methods used complex mathematical processing of results of research allows to specify the content of the psychological determination of the dominant instinct of constructive self-realization а women age range of 35-45 years and with different social status. Women who bring up the problem child dominates the instinct of self-preservation, which is reflected in their excessive self-centeredness, and is accompanied by low levels of self-actualization, as opposed to the study of women who are raising healthy children and that against the backdrop of a pronounced tendency to self-actualization, dominated by basic instinct "research type" and "independent type."

DISCHARGE WATERS: DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBON (PAH) LEVELS BY A GC-MS/MS METHOD

2015 ◽  
Vol 14 (5) ◽  
pp. 1195-1202 ◽  
Author(s):  
Nadia Crini ◽  
Coline Druart ◽  
Caroline Amiot ◽  
Sophie Gavoille ◽  
Gregorio Crini
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Polycyclic Aromatic

Determination of allostatic load dynamics in the assessment of adaptation in temporary workers in the Arctic

2020 ◽  
pp. 547-548
Author(s):  
O. Yu. Atkov ◽  
S. G. Gorokhova
Keyword(s):  
Body Mass Index ◽  
Glucose Level ◽  
Shift Work ◽  
Allostatic Load ◽  
The Arctic ◽  
Temporary Workers ◽  
Short Term ◽  
Short Term Adaptation ◽  
The Individual

The individual dynamics of the allostatic load index was revealed mainly due to changes in the glucose level, body mass index, which makes it applicable for assessing the short-term adaptation to the stay in the conditions of shift work

Reply to Connor and Evers (2020): Critique of the Bias of Crowds Model Simply Restates the Model

2020 ◽  
Author(s):  
Keith Payne ◽  
Heidi A. Vuletich ◽  
Kristjen B. Lundberg
Keyword(s):  
Implicit Bias ◽  
Group Level ◽  
Systemic Racism ◽  
Individual Level ◽  
The Core ◽  
Psychological Science ◽  
Implicit Biases ◽  
The Individual

The Bias of Crowds model (Payne, Vuletich, & Lundberg, 2017) argues that implicit bias varies across individuals and across contexts. It is unreliable and weakly associated with behavior at the individual level. But when aggregated to measure context-level effects, the scores become stable and predictive of group-level outcomes. We concluded that the statistical benefits of aggregation are so powerful that researchers should reconceptualize implicit bias as a feature of contexts, and ask new questions about how implicit biases relate to systemic racism. Connor and Evers (2020) critiqued the model, but their critique simply restates the core claims of the model. They agreed that implicit bias varies across individuals and across contexts; that it is unreliable and weakly associated with behavior at the individual level; and that aggregating scores to measure context-level effects makes them more stable and predictive of group-level outcomes. Connor and Evers concluded that implicit bias should be considered to really be noisily measured individual construct because the effects of aggregation are merely statistical. We respond to their specific arguments and then discuss what it means to really be a feature of persons versus situations, and multilevel measurement and theory in psychological science more broadly.

THE SUBJECT FIELD OF INSTITUTIONAL EDUCATION: THE SENSE AND PROSPECTS OF DEVELOPMENT IN UKRAINE

2020 ◽  
pp. 25-38
Author(s):  
Irina Mordous
Keyword(s):  
Decisive Role ◽  
Subject Field ◽  
National Education ◽  
Progressive Development ◽  
Separate Area ◽  
Economic Transformations ◽  
The Difference ◽  
The Individual ◽  
Political Economic

The development of modern civilization attests to its decisive role in the progressive development of institutions. They identified the difference between Western civilization and the rest of the world. Confirmation of the institutional advantages of the West was its early industrialization. The genesis and formation of institutionalism in its ideological and conceptualmethodological orientation occurs as a process alternative to neoclassic in the context of world heterodoxia, which quickly spread in social science. Highlighting institutional education as a separate area of sociocultural activity is determined by the factor of differentiation of institutional theory as a whole. A feature of institutional education is its orientation toward the individual and his/her transformation into a personality. The content of institutional education is revealed through the analysis of the institution, which includes a set of established customs, traditions, ways of thinking, behavioral stereotypes of individuals and social groups. The dynamics of socio-political, economic transformations in Ukraine requires a review of the foundations of national education and determination of the prospects for its development in the 21st century in the context of institutionalism.

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