17 research outputs found
Music history pedagogy: content analysis of six editions of the Norton Anthology of Western Music (1980-2009)
Thesis (D.M.A.)--Boston UniversityThe Norton Anthology of Western Music (NAWM) is a widely used textbook for music history courses at the collegiate level, yet there is virtually no research literature closely related to any aspect of the Anthology. The purpose of this study was to: (1) trace the content transformation of the NAWM six editions, chronologically and topically; and (2) describe how the changing content of the Anthology has influenced the way music history has been taught.
The origins of the NAWM, its background within the Norton network, and the six editions (1980-2009) are described in the first chapter. In the second chapter, the literature about NAWM is reviewed, including the Anthologys place among editions of music, published reviews about NAWM, and other works by its editors Claude V. Palisca and J. Peter Burkholder. An examination of their writings shows the range of their research topics, and points to the modifications each of the editors implemented in the different NAWM editions.
The third chapter concerns NAWM organization, content, chronology, and character of changes across editions. Data in the number and frequency of appearance for composers and compositions are presented in tabular form. The most prominent composers and compositions are placed into the main categories of all-edition, S-edition, and 4-edition composers and works, respectively. Changes in chronological order and in the character of every NAWM edition include: (1) varied selections of composers and their works; (2) expanded historical time frame of presented compositions; (3) inclusion of women composers; (4) introduction of textual commentaries for the scores; (5) reformulation of period and style in chapter titles; (6) diversification of the scope of represented genres and styles; and (7) broadening of geographical representation of selected composers. As one result of these modifications a core repertory emerged, a repertory that survived the shifting sands during the anthology's 29-year existence. The thirteen anthology volumes feature 227 composers and 337 different compositions, with 81 composers and 54 compositions represented in all editions.
In the fourth chapter, the future direction of the NAWM is discussed from the standpoint of the 6th edition. Recommendations are made for the future editions and future research
Effect of extreme site-specific value yield data the descriptive statistical indicators
Transport tasks have radically changed in agriculture over the last decade. Speeds have
increased along with tractor power so that 50 km/h even with a full load is quickly reached,
which places more burdens on the brakes. Agricultural vehicles, especially those that can
travel over 40km/h, must be fitted with safe and efficient braking systems to reduce road safety
risks. Trailers being drawn must be the right size and weight for the vehicle drawing them and
they should also be able to cope with the speed of the towing vehicle. They must be well
maintained so that they don’t cause braking problems for the towing vehicle. In order to
address these issues, revised braking requirements will apply to all agricultural tractors and
their trailers (both new and existing) from 1 January 2016. They will also apply to equipment
such as slurry tankers, fertiliser or manure spreaders, grain chaser bins and so on
Application of Statistical Indicators for Digital Image Analysis and Segmentation in Sorting of Agriculture Products
Food processing industry is moving forward to a full automation of all processes, especially in technological line segments which represent critical control points of food safety. One of these points is color sorting by using machine vision, where inappropriate products are removed. Most important product appearance attributes are color and texture. During food processing, the product is captured by optical devices, mostly color cameras and lasers. The aim of this paper is to investigate new eligibility criteria for digital image segmentation by using only image from the camera. The goal is to describe the texture of the product, based on chosen mathematical measures, and to allow for recognition and then classification according to the predefined range of values in an appropriate class. Images of frozen raspberry were used. Image analysis of color parameters in RGB color space and statistical tests to examine normality of data were carried out. Thereafter, one-way Anova and correlation analysis was performed. Statistically significant difference was found for the values of two indicators: entropy and new criteria were derived from standard deviation, as well as mean values of pixels for every channel, and marked as L. After determining the range of these criteria, a new algorithm was developed for image segmentation written in Matlab. One of the results of applying this algorithm is that more than 80% of good products were recognized
Effect of extreme site-specific value yield data the descriptive statistical indicators
Transport tasks have radically changed in agriculture over the last decade. Speeds have
increased along with tractor power so that 50 km/h even with a full load is quickly reached,
which places more burdens on the brakes. Agricultural vehicles, especially those that can
travel over 40km/h, must be fitted with safe and efficient braking systems to reduce road safety
risks. Trailers being drawn must be the right size and weight for the vehicle drawing them and
they should also be able to cope with the speed of the towing vehicle. They must be well
maintained so that they don’t cause braking problems for the towing vehicle. In order to
address these issues, revised braking requirements will apply to all agricultural tractors and
their trailers (both new and existing) from 1 January 2016. They will also apply to equipment
such as slurry tankers, fertiliser or manure spreaders, grain chaser bins and so on
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HERBICIDE PHOSPHINOTHRICIN CAUSES DIRECT STIMULATION HORMESIS
Herbicide phosphinothricin (PPT) inhibits glutamine synthetase (GS), a key enzyme in nitrogen assimilation, thus causing ammonia accumulation, glutamine depletion and eventually plant death. However, the growth response of Lotus corniculatus L. plants immersed in solutions with a broad range of PPT concentrations is biphasic, with pronounced stimulating effect on biomass production at concentrations ≤ 50 μM and growth inhibition at higher concentrations. The growth stimulation at low PPT concentrations is a result of activation of chloroplastic isoform GS2, while the growth suppression is caused by inhibition of both cytosolic GS1 and GS2 at higher PPT concentrations. Since the results are obtained in cell-free system (e.g. protein extracts), to which the principles of homeostasis are not applicable, this PPT effect is an unambiguous example of direct stimulation hormesis. A detailed molecular mechanism of concentration-dependent interaction of both PPT and a related GS inhibitor, methionine sulfoximine, with GS holoen- zymes is proposed. The mechanism is in concurrence with all experimental and literature data
Cryopreservation of fish blood – useful tool for assessing genotoxic potential of aquatic ecosystems
One of the major limitations in performing ecogenotoxicological studies is the distance between research field and the laboratory. As some of the methods used in ecogenotoxicology require fresh biological material with intact cell viability, transfer of samples to the laboratory within a few hours after sampling is usually required. To overcome this issue, we have introduced cryopreservation in our research as a possible solution. Cryopreservation is a method which includes preservation of intact, living cells at low temperature for a long time. In natural conditions freezing, forming of ice crystals and dehydration could destroy cell structures. To avoid this consequence, specific compounds were introduced, cryoprotective agents, in the method of cryopreservation. The main characteristic of these compounds is their ability to reduce ice crystal formation in cells at any temperature.
We have applied cryopreservation in the evaluation of genotoxic potential along different river streams (the Adige River, the Sava River and the Velika Morava River basin). For this purpose, we focused on the level of DNA damage of cryopreserved fish blood cells (Salmo cenerinus, Salmo marmoratus, Alburnus alburnus) by using the comet assay.
To test whether cryopreservation has the impact on cell viability, or that it induces additional DNA damage, we employed preliminary experiments in 4 Abramis brama and 8 A. alburnus specimens. Namely, from every specimen two blood samples were taken: one for analyzing cells viability and the level of DNA damage of fresh blood, and another for observing cell viability and DNA damage of cryopreserved samples. The viability of cell blood was determined by using acridine orange/ethidium bromide differential staining. For analyzing the level of DNA damage alkaline comet assay was used. Obtained results indicated that cryopreserved blood cells had approximately the same viability and the level of DNA damage as nonpreserved blood samples.
According to our results, cryopreservation is a very useful method in genotoxicology and could have many benefits: blood samples should not be analyzed immediately after sampling; samples could be transported in liquid nitrogen without concern about additional DNA damage
Correction to: Parenchyma cell wall structure in twining stem of Dioscorea balcanica (vol 24, pg 4653, 2017)
In the original publication of the article, one of the project numbers was omitted in the Acknowledgments. The correct version is provided below.Original publication: [http://cer.ihtm.bg.ac.rs/handle/123456789/2090
Petar Bergamo’s symphonic compositions: Perspectives of the 1960s and 1990s
This article deals with the orchestral opus of Petar Bergamo, a Croat composer whose most productive period was linked to Beograd, Serbia where he lived and worked at the time. In four works: First Symphony overture-phantasy Navigare necesse est, Musica Concertante and Second Symphony, all conceived in just four consecutive years (1960 - 1963), the matter being treated through author’s technical tools includes authentic materials, autoquotations, quasiquotations, quotations, and the ‘fund’ mode (fundus). Fragments of musical history embedded in the newly established structure, void of tonal components and orchestrated in great detail to achieve the coloration which may prevail the actual form, introduced to Serbian practice a new respect for the old. Since it was new, Bergamo’s contribution could not have been determined at that time in all of its significance. Laying his agenda on the dead-end street of what was considered modern art, Bergamo earned an attribute of post, regarding his respect for the past. The reception of Bergamo’s opus is viewed here through various articles and critiques from the time of its inception as well as thirty years later. From the viewpoint of the 1990s it appears that his language or at least some of its elements had become the impetus for one particular stream of local compositional teaching. As such, this strengthens his position as a fundamental innovator, and labels him as the one who imposed the post in modern Serbian music
High frequency of p16 and p14 promoter hypermethylation and marked telomere instability in salivary gland tumors
Objectives: to investigate p16(INK4a) and p14(ARF) tumor suppressor gene methylation status, determine telomere length and assess the importance of these epigenetic and genetic parameters in the development of pleomorphic adenoma and carcinoma ex pleomorphic adenoma of the parotid salivary glands. Materials and Methods: Genomic DNA from paraffin-embedded samples of 50 pleomorphic adenomas and 10 carcinomas ex pleomorphic adenoma was subjected to methylation specific polymerase chain reaction for hypermethylation analyses and real time polymerase chain reaction for the relative telomere length calculations. Results: Promoter hypermethylation of the two genes was a very frequent event in both neoplasms between 60% and 90% of samples were hypermethylated - but without significant difference between the groups. The mean relative telomere length in the pleomorphic adenoma group was significantly increased in comparison to the control group (P = 0.00), and significantly decreased in comparison to the carcinoma group (P = 0.05). Telomeres were also longer in myxoid and cellular histological subtypes of adenomas than in the classic type (P = 0.044 and P = 0.018, respectively). Longer telomeres were more frequent in tumors with hypermethylated p14(ARF) alleles (P = 0.013). Conclusion: Promoter hypermethylations seems to be an important mechanism of p16(INK4a) and Pl4(ARF) inactivation in parotid gland tumors. Telomeric lengthening appears to be involved in the pathogenesis of both benign and malignant tumors of the parotid glands. (C) 2015 Elsevier Ltd. All rights reserved
Chemometric analysis of antioxidant activity and anthocyanin content of selected wild and cultivated small fruit from Serbia
Introduction. The fruit types such as raspberries (Rubus
idaeus), cherries (Prunus cerasus), blackberries
(Rubus fructicosus), blackthorns (Prunus spinosa) and
aronia (Aronia melanocarpa) are very common in Serbia. These fruit
species are a valuable source of antioxidants. The goal of our work was to evaluate the
antioxidant activities of ethyl acetate extracts of these five berries and to establish
possible correlation between the content of anthocyanin and the antioxidant activity.
Materials and methods. To determine antioxidant activity of the selected
fruits, the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, the ABTS
(2,2-azinobis-3 ethyl benzothiazoline-6-sulfonic acid) cation decolorization activity, the
FRAP (ferric reducing antioxidant power), and the TRP (total reducing power) were
measured. Results. The four methods selected for our assays showed strong
antioxidant properties for blackberry samples. The total anthocyanin content was estimated
using the pH differential method. The highest amount of anthocyanin was found in
blackberry samples [(1063.53 ± 0.01) mg·kg–1 fresh fruit], while the lowest was in
raspberry samples [(180.84 ± 0.02) mg·kg–1 fresh fruit]. The correlation between the
content of anthocyanin and antioxidant activity was established using regression analysis.
The highest correlation was found between total reducing power and total anthocyanin
(r = 0.97, p < 0.05). Hierarchical cluster analysis
divided selected fruit species into two statistically significant clusters.
Conclusion. Our results confirmed that analyzed berries are rich in
anthocyanins. A strong correlation among different assays as well as with anthocyanin
content was observed. Cluster analysis can be used in food science, to classify different
food types into groups, based on similarity among the results