Compared study of plant residues and organic fertilizer on yield of ryegrass Petkova, Z., Institute of Soil Science 'N. Pushkarov', Sofia (Bulgaria); Tosheva, E., Institute of Soil Science 'N. Pushkarov', Sofia (Bulgaria); Valchovski, I., Institute of Soil Science 'N. Pushkarov', Sofia (Bulgaria)
Bulgarian Journal of Ecological Science (Bulgaria),
2009, Letnik:
8, Številka:
3
Journal Article
A pot experiment with ryegrass has been conducted to compare some plant residues and organic fertilizers on two soil types– Calcareous Chernozem and Leached Vertisol. On the based of received data it ...is established that the effect of examined organic materials is higher under the conditions of Calcareous Chernozem than in Leached Vertisol. The barley straw added in combination with mineral nitrogen creates most favorable conditions of ryegrass growth. The differences of examined variants in comparison with the control are proved on the degree of probability P0.05.
Internal biliary fistula (IBF) is still a challenging condition. The preoperative diagnosis is established in less than 50% of cases. Treatment is based on individual approach but postoperative ...morbidity and mortality rates are high.
To study the experince of our clinic in the diagnosis and treatment of IBF's and to make a review of the literature.
a retrospective analysis of the data of 7 patients with IBF (0,53% of all surgical interventions on the biliary system during a 4-years period). The preoperative diagnosis was correct in only 2 cases. All the 7 patients were treated surgically.
The early postoperative mortality and morbidity rates were 0% and 42,86% respectively. The data of literature are reviewed and discussed.
IBS is a rare condition affecting more often women above 65 yrs suffering of gallstones. There are no typival clinical and laboratory data but US, CT-scan, ERCP and MRI might be a 100% informative. Open surgery remains the basic method of treatment.
Bacterial vaginosis (BV) is the most common infection of the lower genital tract among women of reproductive age. The purpose of this study was to determine the frequency of BV and the important ...etiological agent Gardnerella vaginalis in Bulgarian patients of different age groups, as well as, the risk factors forBV METHODS: One thousand five hundred and twenty-three (1523) women aged 16 to 45 years without previous antimicrobial therapy were included in this study. The methods used were: scoring of Gram staining of vaginal smear and polymerase chain reaction (PCR) assay for G. vaginalis.
Positive for BV according to the microscopic examination criteria were 47.80% from the 1523 tested women. In 88.87% from the positive samples G. vaginalis was detected using PCR, thus demonstrating high comparability of the both methods and the leading role of G. vaginalis. The most affected with BV is the age group of 21-25 years (33.21% of all subjects with BV). The most important detected risk factors were: smoking (more than 55% with BV), single marital status (only 15% with BV are married), more than I sexual partner (more than 36% had changed the sexual partner), early onset of sexual activity (75% of B V asocciated subjects started their sexual activity by the age 15-18 years).
The established early age for aquiring BV among Bulgarian women is very important and alarming sign. This is the first study on the etiological role of G. vaginalis and on the risk factors for BV in Bulgaria.
Dolichyl phosphates of different chain length (C35, C55 , C75 , Dol-mixture of C90 , 95, 100, 105 and C110 ) were tested as lipid acceptors in transglycosylation reactions. In the absence of ...exogenously added dolichyl phosphates there were no differences in the rate of synthesis in liver of dolichyl phosphate mannose, dolichyl phosphate glucose and dolichyl pyrophosphate N-acetylglucosamine between normal and ethionine-treated animals. Addition of exogenous dolichyl phosphates of different chain length stimulated the synthesis of dolichyl phosphate mannose and dolichyl pyrophosphate N-acetyl-glucosamine 2 to 4 times depending on the chain length of dolichols , both in normal and ethionine-treated animals. In liver of ethionine-treated rats the formation of dolichyl phosphate glucose was not stimulated. Following ethionine treatment the concentration of free and esterified with fatty acids dolichols was increased.
A three years long field trail of winter wheat was conducted. The plants were grown on Pellic Vertisols, Sofia district. Three factors were tested: A-depth and manner of soil tillage (double ...cultivation at 8-10 cm depth + 6-8 cm and plough at 10-15 cm + cultivation at 6-8 cm; B-kind of fertilizers and way of application in soil (standard Super phosphate and new complex form - "SFAST") using every year at regular intervals of two years, C-rates of fertilization with nitrogen and phosphorus (0; 12; 16 and 20 kg/da nitrogen and 0; 9.6; 12.8 and 16 kg/da P2O5). It was found that there were not sinificantly differences of yield between two tillage systems and phosphorus fertilizers. Variations in the yield depend mainly on the meteorological conditions.
Dolichyl phosphates of various chain length ranging from 7 to 22 isoprene units were tested as lipid acceptors in transglycosylation reactions in chicken liver and Hepatoma MC-29. In the presence of ...exogenous dolichyl phosphate mixture (18 and 19 isoprene units) the synthesis of dolichyl pyrophosphate N-acetylglucosamine and dolichyl phosphate mannose increased 3 times both in the liver and Hepatoma MC-29, while the formation of dolichyl phosphate glucose was 4 fold higher in the liver and 6-fold higher in Hepatoma MC-29. In liver microsomes the maximum rate of the stimulation of glycosylation was achieved by exogenous dolichyl phosphates, containing 18 and 19 isoprene units, while glycosyl transferases in microsomes from Hepatoma MC-29 did not show any structural requirements to the chain length of dolichyl phosphates.
