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1.
This article describes the slight impact of Lysenkoism upon Polish botany. I begin with an account of the development of plant genetics in Poland, as well as the attitude of scientists and the Polish intelligentsia toward Marxist philosophy prior to the World War II. Next I provide a short history of the introduction and demise of Lysenkoism in Polish science, with a focus on events in botany, in context with key events in Polish science from 1939 to 1958. The article outlines the little effects of Lysenkoism upon botanists and their research, as well as how botanists for the most part rejected what was often termed the “new biology.” My paper shows that though Lysenko’s theories received political support, and were actively promoted by a small circle of scientists and Communist party activists, they were never accepted by most botanists. Once the political climate in Poland altered after the events of 1956, Lysenko’s theories were immediately abandoned.  相似文献   

2.
Following large-scale labour migration from Poland to the Norwegian construction sector since 2004, new ethnic divisions of labour have been established between the usually native core workforces of construction firms, and Polish migrant workers hired through temporary subcontracting and staffing agencies. Survey data suggest that there is very little mobility between these segments of the labour market. The establishment and reproduction of this ethnic division of labour is analysed through qualitative interviews with Norwegian employers and Polish migrant workers. Polish migrants and their particular ‘work culture’ are perceived by Norwegian employers as well-suited for work in the firms’ temporary external workforces but unfit for permanent positions unless they assimilate to a ‘Norwegian work culture’. These stereotyped employment practices are reinforced by the migrants’ own tactical use of the cultural capital available to them when negotiating the conflicting expectations in different job segments.  相似文献   

3.
4.
This article offers a comparison of the status of the “traditional” medium of oil painting or acrylic in Hong Kong SAR and in Mainland China. This issue concerns the well-known discourse about the hand as medium; a typical example of what Pierre Bourdieu would call habitus. The representation of art as something produced by the hand has been the only habitus in Euro-America for a number of centuries, and it remains so among many participants of the social field of art. The development of this habitus followed very different paths in Mainland China and in Hong Kong, thanks to very different institutions in those places. Those responsible for their establishment in the 20th century, especially educational institutions, are analyzed and provide the backdrop for the analysis of the field of art in present-day Hong Kong. New institutions and new ways for these institutions to deal with art education are now changing the field of art in Hong Kong, creating new concepts to deal with the issue of forms of art seen as respectively “traditional” and “contemporary.” In ways very different than what happens in Europe, for instance, where even media that can be seen as “traditional” like oil painting tend to belong to a single “contemporary art” habitus, Hong Kong has seen the establishment of a state of competition between two habitus seen as unrelated. This article concludes with a brief portrait of the state of struggle between these two habitus within the Hong Kong art field.  相似文献   

5.
The aim of the present study was to identify deletion/insertion polymorphism of the bovine prion protein (PRNP) gene within the promoter sequence (23 bp indel), intron 1 (12 bp indel) and the 3′ end untranslated region (14 bp indel). The experiment was performed on three groups of animals protected under a genetic resources conservation program: 139 Polish Red (PR) cows, 79 Polish White-backed cows and 50 European bison (Bison bonasus L., 1758). White-backed cattle were characterized by a higher frequency of ins/del heterozygotes and a relatively lower frequency of ins/ins homozygotes within the promoter sequence region (23 bp indel), compared to Polish Red cattle. At the polymorphic locus of intron 1 (12 bp indel) the genetic structure of both cattle populations was similar. Monomorphism, expressed by the occurrence of one genotype variant in each of the analyzed sequence regions, was observed in European bison. Five haplotypes were found in Polish White-backed cows, four haplotypes in Polish Red cows and only one in analyzed group of bison. Differences between the observed and expected number of PRNP haplotypes were recorded in Polish Red cattle. The article is published in the original.  相似文献   

6.
Aim of the present study was to evaluate the genetic diversity of selected European populations of Marsilea quadrifolia L. and to assess the applicability of those genetic resources of Marsilea quadrifolia L. that have been preserved in Polish botanical gardens, for the reintroduction of this species into its historical range in Poland. Three Polish populations that originated from botanical collections (Zabrze, ?arów and Pu?awy) and four natural populations (two from Slovakia (Slovakia I and Slovakia II), one from France and one from Germany) were analyzed using Amplified Fragment Length Polymorphism (AFLP) markers. A very low level of genetic variation was found both within and between the populations in the study, which likely resulted from a genetic bottleneck probably caused by human activities. Plants with the same AFLP fingerprint were found across several populations; however, singleton samples with a unique AFLP band pattern were also present within all of the populations. The presence of singletons led to relatively high values of Simpson's diversity index, which may suggest a considerable effect of mutations and some possibility of sexual reproduction as sources of the observed variation. The partitioning of molecular variance was calculated using hierarchical AMOVA, which showed that a negligible value of only 0.81% of the variation was explained by the category of population, i.e. plants originating from the botanical collections or from the natural habitats. This result indicates that M. quadrifolia populations from botanical collections resemble natural populations in terms of the level of their genetic variation and that the populations that were obtained from the Polish collections could be used for the successful reintroduction of this species into its historical range in Poland, and a similar situation may be given also in other areas of occurrence of this plant that is under threat throughout its area of occurrence in Europe.  相似文献   

7.
Polish Arabian horses are one of the oldest and the most important Arab populations in the world. The Polish Arabian Stud Book and the Genealogical Charts by Skorkowski are the main sources of information on the ancestors of Polish Arabs. Both publications were viewed as credible sources of information until the 1990s when the data regarding one of the dam lines was questioned. The aim of the current study was to check the accuracy of the pedigree data of Polish dam lines using mtDNA analysis. The analyses of a 458 bp mtDNA D-loop fragment from representatives of 15 Polish Arabian dam lines revealed 14 distinct haplotypes. The results were inconsistent with pedigree data in the case of two lines. A detailed analysis of the historical sources was performed to explain these discrepancies. Our study revealed that representatives of different lines shared the same haplotypes. We also noted a genetic identity between some lines founded by Polish mares of unknown origin and lines established by desert-bred mares.  相似文献   

8.
Variance between and within sibships in anthropometric traits was ascertained in a sample of Mexican families in the U.S.A. (migrants) and in Mexico (sedentes), by sex. The factor of age was eliminated by standardization. The siblings intraclass coefficient of correlation for the various traits by means of the one-way variance analysis manifested differences between the sexes in various anthropometric traits. Variance between sibships was found to be significantly higher than within sibships in all the traits in each sex, and both migrant and sedente sibships. This result, also noted in other groups, would seem to reflect a general population phenomenon.  相似文献   

9.
The report presents a segmental hair analysis for the retrospective multi-parameter evaluation of drugs of abuse including opioids, cocainics and amphetamines. The analysis was carried out with the use of liquid chromatography atmospheric pressure chemical ionization tandem mass spectrometry (LC-APCI-MS-MS). The authors have evaluated the differences in the contents of particular opiates in the hair as related to the origin of a sample taken from Polish drug users taking "Polish heroin", and also from heroin abusers from Western European countries taking "Western heroin". The results indicate distinct differences in the 6-MAM concentration values in the Polish and foreigners, suggesting that the foreigners take products containing high concentrations of heroin and the Polish take the poppy product "compote" characterized by its variable and low heroin content. An additional argument for a different abuse profile in the Polish and Western drug users is found in the presence of cocaine detected in hair samples originating from the latter, while cocaine is much less frequently detected in Polish drug users.  相似文献   

10.
A phylogenetic analysis based on 58 morphological characters including 18 species representing 14 genera over the 15 currently known in Darnini (Hemiptera: Membracidae) confirms the monophyly of this tribe. This result is particularly supported by the presence of cucullate setae on the ventral side of the femora. Two sister clades are inferred: the clade Funkhouseriana+ which groups four genera (Aspona, Cyphotes, Funkhouseriana, Taunaya) and exhibits a ‘bird dropping’ habitus and all other genera which exhibit a ‘dewdrop’ like habitus (Alobia, Darnis, Dectonura, Hebetica, Hebeticoides, Leptosticta, Ochrolomia, Stictopelta) or a ‘thorny’ habitus (Alcmeone, Sundarion). In the ‘dewdrop’ habitus, only the clade Ochrolomia+ is retained as a monophyletic unit. According to these results, pronotal shapes and habitus have evolved independently in each monophyletic unit and each one seems correlated with a particular type of mimicry strategy. According to the strategy, characters involved are different, a priori independent; moreover, they look coordinated regarding to the mimicry function they serve. The various evolutionary scenarios are discussed in relation to the phylogeny, and particularly in correlation with the non-gregarious behavior of these membracids, also coherent with their mimicry strategy.  相似文献   

11.
We examine how race and class influenced the lives of six African American high school seniors who attended a predominantly white, elite, independent secondary school. Race and class contributed to an organizational habitus of the school characterized by white and wealthy privilege. Interaction of that dominant habitus with the dissimilar individual habitus of the students resulted in a form of symbolic violence—symbolic violence the black students knowingly endured in exchange for the social mobility afforded by attending the elite school.  相似文献   

12.
Changes of progesterone level in the plasma of sows during the estrous cycle. Acta Physiol. Pol., 1978, 29 (2): 177--183. The investigations were carried out on 12 sows of the Polish Large White and Polish White Longeared breeds. Blood samples were taken daily from auricular veins between 8 and 11 a.m. The progesterone level was determined in the blood plasma by the competitive protein--binding technique. The results obtained were within the limits of below 1 to 25 ng/ml plasma. During ovulation the plasma progesterone level was lowest. It increased markedly beginning with the 4th to 6th day of the estrous cycle, reaching its peak on the 14th and 15th day and then fell significantly to a minimum value in the estrous period. Individual differences in the plasma progesterone level between the sows were also noted.  相似文献   

13.
As a result of detailed studies of the dog anatomy, the authors have concluded that besides generally accepted subdivision of these animals into flabby, rough, strong, lean and gentle types, it is reasonable to subdivide them according to the type of their habitus (brachy-, meso- and dolichomorphous types). In 95 fresh and fixed anatomical preparations, peculiarities of topographic-anatomical relations and morphometric indices of magistral arteries and their large branches have been studied in the pelvic girdle and a free hind extremity in mongrel dogs according to the type of their habitus. In dogs of mesomorphous type of habitus, quantitative parameters of the diameter and length of magistral arterial trunks in the hind extremity, as a well as the distance between their branches occupy an intermediate place when comparing the animals of brachy- and dolichomorphous types. The authors have come to the conclusion that dogs of the mesomorphous type of habitus are the most suitable to perform experiments on transplantation of extremities and for modelling different pathophysiologic conditions in the organ.  相似文献   

14.
The study aimed to characterise the gametes of salmon (Salmo salar L.) ascending Polish rivers, the first such characterisation since initiation of the salmon restitution programme in the 1980s. Gametes of ascending salmon were examined in two Polish rivers: the Wieprza in the western part of the Polish Baltic coast and the Vistula in the eastern part. Additional gametes were sampled from salmon maintained in pond cultures at fish farms that had provided stocking material for the restitution programme. Spermatocrit, spermatozoa concentration and motility, egg size and weight, as well as egg membrane resistance were analysed. The parameters studied were found to differ both within individual populations and between them. The high variability of the gamete characteristics bodes well for the salmon population in Polish waters, because it evidences high species plasticity and an ability to adapt to changing environmental conditions. Despite the variabilities observed, the egg and sperm parameters showed values within ranges optimal for salmon reproduction under natural conditions. Sperm quality was found to be largely dependent on environmental conditions affecting the adult males (environmental conditions explained 73.9% of sperm parameter variability), whereas egg quality was mainly related to individual characteristics of the respective female (environmental conditions explained as little as 28.3% of the egg parameter variability).  相似文献   

15.
Different regional populations from Poland were studied in order to assess the genetic heterogeneity within Poland, investigate the genetic relationships with other European populations and provide a population-specific reference database for anthropological and forensic studies. Nine Y-chromosomal microsatellites were analysed in a total of 919 unrelated males from six regions of Poland and in 1,273 male individuals from nine other European populations. AMOVA revealed that all of the molecular variation in the Polish dataset is due to variation within populations, and no variation was detected among populations of different regions of Poland. However, in the non-Polish European dataset 9.3% ( P<0.0001) of the total variation was due to differences among populations. Consequently, differences in R(ST)-values between all possible pairs of Polish populations were not statistically significant, whereas significant differences were observed in nearly all comparisons of Polish and non-Polish European populations. Phylogenetic analyses demonstrated tight clustering of Polish populations separated from non-Polish groups. Population clustering based on Y-STR haplotypes generally correlates well with the geography and history of the region. Thus, our data are consistent with the assumption of homogeneity of present-day paternal lineages within Poland and their distinctiveness from other parts of Europe, at least in respect to their Y-STR haplotypes. Electronic supplementary material to this paper can be obtained by using the Springer LINK server located at http://dx.doi.org/10.1007/s00439-002-0728-0.  相似文献   

16.
Genetic structure in field populations of Bradyrhizobium japonicum isolated in Poland was determined by using several complementary techniques. Of the 10 field sites examined, only 4 contained populations of indigenous B. japonicum strains. The Polish bradyrhizobia were divided into at least two major groups on the basis of protein profiles on polyacrylamide gels, serological reaction with polyclonal antisera, repetitive extragenic palindromic PCR fingerprints of genomic DNA, and Southern hybridization analyses with nif and nod gene probes. Serological analyses indicated that 87.5% of the Polish B. japonicum isolates tested were in serogroups 123 and 129, while seven (12.5%) of the isolates tested belonged to their own unique serogroup. These seven strains also could be grouped together on the basis of repetitive extragenic palindromic PCR fingerprints, protein profiles, and Southern hybridization analyses. Cluster analyses indicated that the seven serologically undefined isolates were genetically dissimilar from the majority of the Polish B. japonicum strains. Moreover, immuno-cross-adsorption studies indicated that although the Polish B. japonicum strains reacted with polyclonal antisera prepared against strain USDA123, the majority failed to react with serogroup 123- and 129-specific antisera, suggesting that Polish bradyrhizobia comprise a unique group of root nodule bacteria which have only a few antigens in common with strains USDA123 and USDA129. Nodulation studies indicated that members of the serologically distinct group were very competitive for nodulation of Glycine max cv. Nawiko. None of the Polish serogroup 123 or 129 isolates were restricted for nodulation by USDA123- and USDA129-restricting soybean plant introduction genotypes. Taken together, our results indicate that while genetically diverse B. japonicum strains were isolated from some Polish soils, the majority of field sites contained no soybean-nodulating bacteria. In addition, despite the lack of long-term soybean production in Poland, field populations of unique B. japonicum strains are present in some Polish soils and these strains are very competitive for nodulation of currently used Polish soybean varieties.  相似文献   

17.
Summary Using anti-human calcitonin serum and a protein !-gold technique, calcitonin was localized at the ultrastructural level in control and calcium gluconate-stimulated thyroid C cells of the rat. In control rats calcitonin was dedected within a majority of the secretory granules while in experimental animals it was demonstrated also within prosecretory granules present in Golgi apparatus.The study was partially supported by a grant from the Committee of Cytobiology, Polish Academy of Sciences  相似文献   

18.
Our study aimed at comparative analysis of microsatellite polymorphism in locus OMHC1 (MHC Class I) in Polish Heath Sheep and Polish Lowland Sheep (Zelazna variety). The study was conducted on 100 ewes of each breed. We identified 13 alleles of the gene in Polish Heath Sheep and 9 in Polish Lowland Sheep. We found marked differences in frequency of OMHC1 alleles between both breeds. The heterozygosity coefficient and PIC, amounting to 0.79 and 0.77 for Polish Heath Sheep, and 0.82 and 0.80 for Polish Lowland Sheep, respectively, suggest considerable variability in both breeds. Additionally, the values of both coefficients indicate that OMHC1 locus can be used as a genetic marker.  相似文献   

19.
Landraces and old, obsolete cultivars are a rich source of diversity and could become important and easy‐to‐use germplasm resources for breeding. They are characterised by yield stability, broad adaptation, tolerance to diseases and a greater competitiveness in the presence of weeds. The main objective of this study was to estimate and compare the genetic diversity among and within landraces, old cultivars and modern cultivars of common oat. Inter simple sequence repeats were used to study the genetic diversity of 12 modern Polish cultivars, 23 old Polish cultivars, 19 native landraces and 5 contemporary European cultivars. The results indicated a low amount of diversity among Polish modern cultivars, but an even lower diversity among old Polish cultivars, as well as large differences between these two gene pools. As expected, the landraces were the most diverse group and showed the highest internal variation. The landraces and old cultivars might serve as sources of useful alleles that have never been used in breeding. Additionally, it was possible to identify errors and inconsistencies in the passport data of gene‐bank accessions. These results can be applied to the maintenance and management of gene‐bank collections.  相似文献   

20.
Recent attempts to discover genetic factors affecting cattle resistance/susceptibility to bovine spongiform encephalopathy (BSE) have led to the identification of two insertion/deletion (indel) polymorphisms, located within the promoter and intron 1 of the prion protein gene PRNP, showing a significant association with the occurrence of classical form of the disease. Because the effect of the polymorphisms was studied only in few populations, in this study we investigated whether previously described association of PRNP indel polymorphisms with BSE susceptibility in cattle is also present in Polish cattle population. We found a significant relation between the investigated PRNP indel polymorphisms (23 and 12 bp indels), and susceptibility of Polish Holstein-Friesian cattle to classical BSE (P < 0.05). The deletion variants of both polymorphisms were related to increased susceptibility, whereas insertion variants were protective against BSE.  相似文献   

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