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22.
Clemens M. Lechner Maria K. Pavlova Rainer K. Silbereisen Katariina Salmela-Aro 《应用发育科学》2018,22(4):270-283
We investigated whether the link between family-of-origin socioeconomic status (SES) and civic engagement in young adulthood is mediated by youth’s work values, that is, the desired characteristics of their current or future jobs. We used data from a Finnish study: 2004 (age 16–18, NT1?=?1,301); 2011 (age 23–25, NT2?=?1,096); and 2014 (age 25–27, NT3?=?1,138). A higher family SES in 2004 predicted youth’s higher civic engagement in 2014. A higher family SES also predicted a lower importance of extrinsic job rewards (e.g., good pay) in 2011, but it was unrelated to the importance of intrinsic job rewards (e.g., learning opportunities). Extrinsic work values, in turn, predicted lower civic engagement in 2014, above and beyond sociodemographic and personality characteristics. Intrinsic work values predicted higher civic engagement. Thus, extrinsic, but not intrinsic, work values partly mediated the link between family SES and youth civic engagement. 相似文献
23.
E V Kurenova B A Le?bovich I A Bass D V Bebikhov M N Pavlova O N Danilevskaia 《Genetika》1990,26(10):1701-1712
A mobile element (ME) having 91% homology with Dm1360 (Kholodilov et al., 1987) has been cloned from the Drosophila melanogaster genome and sequenced. The family of ME was designated hoppel. The members of this family are flanked by short inverted repeats likewise P, hobo and HB. The hoppel is hybridized with 10-30 euchromatic sites of polytene chromosomes of different Drosophila stocks. Abundant hybridization with heterochromatic regions of chromosomes-chromocenter, pericentric heterochromatin, the 4 chromosome and telomeres was observed in all stocks of D. melanogaster examined and in D. simulans. At least six genomic variants of ME differing in length of the central part were revealed. Hoppel possesses ARS activity similar to the P element. Two ME hoppel were shown to be arranged as a direct repeat in the recombinant phage. 相似文献
24.
The synchronism and latency of auditory evoked potentials (EP) recorded in symmetric points of the frontal cortex and lateral hypothalamus of cats were measured at different stages of instrumental food conditioning and after the urgent transition to 30% reinforcement. Correlation coefficients between EPs in the cortex and hypothalamus were high (with left-side dominance) at the beginning of the experiments, when food motivation was high, and during the whole experiments in cases of high-probability of conditioned performance. Analysis of early positive P55-80 EP component showed that at all conditioning stages the peak latency of this component was shorter in the left cortical areas than in symmetrical points, whereas in the hypothalamus the shorter latency at the left side was observed at the stage of unstable conditioned reflex, and at the stage of stable reflex the latency of the studied component was shorter at the right side. During transition to 30% reinforcement, the latency was also shorter in the right hypothalamus. It is suggested that the high left-side correlation between the hypothalamus and cortex was associated with motivational and motor component of behavior rather than reflected the emotional stress induced by transition to another stereotype of food reinforcement (30%). 相似文献
25.
Geert Zegels Geert AA Van Raemdonck Edmond P Coen Wiebren AA Tjalma Xaveer WM Van Ostade 《Proteome science》2009,7(1):17-16
Background
Cervical-vaginal fluid (CVF) plays an important role in the prevention of gynecological infections, although little is known about the contribution of CVF proteins to the immunity of the lower female genital tract. In order to analyze the protein composition of human CVF, we used CVF samples that are routinely collected during colposcopy, but are usually discarded. Since these samples are available in large quantities we aimed to analyze their usefulness for proteomics experiments. The samples were analyzed using different prefractionation techniques (ultrafiltration and C4(RP)-LC protein separation) followed by C18(RP)-LC peptide separation and identification by MALDI-TOF-TOF mass spectrometry. To determine the reproducibility of this proteomics platform we analyzed three technical replicates. Using spectral counting, protein abundances were estimated in a semiquantitative way. We also compared the results obtained in this study with those from previous studies derived from patients with different physiological conditions in order to determine an overlapping protein set. 相似文献26.
27.
O. V. Chernikov I. V. Chikalovets V. I. Molchanova M. A. Pavlova P. A. Lukyanov 《Russian Journal of Marine Biology》2007,33(5):329-332
Algae of Peter the Great Bay (Sea of Japan) were for the first time bioassayed as a source of lectins. From 28 algal species of three orders, only some extracts from brown (Phaeophyta) and red (Rhodophyta) seaweeds were found to cause agglutination of human erythrocytes. The hemagglutinating activity of extracts from three species of brown algae and the red alga Tichocarpus crinitus was caused by lectins; for a majority of extracts from the investigated algae, this activity was due to the presence of substances of non-lectin nature. 相似文献
28.
Rositsa Zamfirova Elina Tzvetanova Albena Alexandrova Lubomir Petrov Polina Mateeva Almira Pavlova Margarita Kirkova Simeon Todorov 《Central European Journal of Biology》2009,4(2):170-178
The effects of nociceptin(1–13)NH2 (N/OFQ(1–13)NH2) and its structural analogue [Orn9]N/OFQ(1–13)NH2 on acute carrageenan (CG)-induced peripheral inflammation and paw antioxidant status were studied. CG was injected intraplantarly
in the right hind paw of rats and the volume of the inflamed paw was measured each 30 min for a period of 4h. When administered
simultaneously with CG, N/OFQ(1–13)NH2 decreased the paw volume, whereas if injected 15 min before CG it had no effect. [Orn9]N/OFQ(1–13)NH2 produced the opposite effects at the same time-intervals of its administration. We also investigated whether these neuropeptides
influence CG-induced changes in cell antioxidant system, especially at the 4th hour of CG administration. CG alone decreased
the glutathione level and superoxide dismutase activity, as measured in post-nuclear homogenate of the inflamed paw. However,
CG injection increased glutathione peroxidase and glucose-6-phospate dehydrogenase activities, while the activity of glutathione
reductase was unchanged. The peptides themselves did not change all measured parameters. Moreover, neither N/OFQ(1–13)NH2 nor [Orn9]N/OFQ(1–13)NH2 modified CG-induced changes in the antioxidant status, regardless of the time of their injection (simultaneously or 15 min
before CG). The present results suggest that N/OFQ(1–13)NH2 and [Orn9]N/OFQ(1–13)NH2 most likely affect the neuronal inflammation, rather than act as pro- or antioxidants. 相似文献
29.
M E Tankevich R A Zhukova N P Zhuravleva T N Pavlova 《Antibiotiki i khimioterapii͡a》1989,34(11):811-813
Mitomycin C, a DNA-tropic antibiotic, was shown to have a lethal effect on spore sprouts of two strains of Streptomyces antibioticus, an organism producing oleandomycin. When the time of exposure to the antibiotic increased there was an almost equal decrease in the survival rate. The mutagen action on the morphological variation and antibiotic production of the two closely related strains were diverse due to their genetic differences. The strain isolated after the culture treatment with a chemical mutagen and subjected to a more prolonged maintaining selection showed lower variation with respect to its colony morphology. The other strain isolated after treatment of the culture with high concentrations of its own antibiotic showed lower variation with respect to its antibiotic production property. The shift in the antibiotic production in the direction of the low active variants was characteristic of the both highly productive strains. 相似文献
30.
Four groups of human characters (mendelian markers, anthropometry, neurodynamics and psychodynamics) were studied in eight human populations characterized by different degrees of isolation and different ethnic backgrounds, and located in different ecological conditions. The populations examined were proved to display phenotypic and genetic differentiation for the studied groups of characters which were compared with linguistic and geographical distances. The role of genetic factors and that of environmental factors was shown to diminish and to increase, respectively, as the degree of complexity of expression of the group of characters under study (from anthropometry to psychodynamics) goes up. 相似文献