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Search Results: 1 - 10 of 461753 matches for " Nona A. Mikiashvili "
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Biodegradation and Sugar Release from Canola Plant Biomass by Selected White Rot Fungi  [PDF]
Omoanghe S. Isikhuemhen, Nona A. Mikiashvili, Zachary N. Senwo, Elijah I. Ohimain
Advances in Biological Chemistry (ABC) , 2014, DOI: 10.4236/abc.2014.46045
Abstract: Canola crop is rich in plant biomass. It is considered a major cash crop in North America and a potential source for biofuel. We evaluated six strains of white rot basidiomycetes under solid state fermentation (SSF) for their potentials to secrete oxidative and hydrolytic enzymes to biodegrade canola plant biomass (CPB), and release sugars. Fuscoporia gilva and Pleurotus tuberregium produced high amount of laccase (440.86 U/L and 480.63 U/L at day 7), as well as carboxylmethylcellulase (CMCase) (4.78 U/mL at day 21 and 3.13 U/mL at day 14) and xylanase (4.48 U/mL and 7.8 U/mL at day 21), respectively. Bjerkandera adusta showed high amount of MnP (50.4 U/L) and peroxidase (64.5 U/L), relative to the other strains. Loss of organic matter peaked after 21 days of incubation in all the tested strains; however, the best result (34.0%) was shown in P. tuberregium. The highest lignin loss was observed in Coriolopsis caperata strains. Among the sugar polymers, hemicellulose was highly degraded by P. tuberregium and P. pulmonarius (4.1% - 4.6%), while cellulose (3.3% - 4.3%) was mainly degraded by F. gilva and B. adusta. Glucose was the dominant sugar released by all the fungi tested, with the highest concentration of 1.25 mg/mL produced by B. adusta at day 14 of incubation. Results indicate that selected white rot fungi can achieve significant delignification of CPB within 14 days of solid state fermentation. Their importance in low cost pretreatment of lignocellulosic biomass prior to conversion into biofuels and bio-products of economic importance is discussed.
Lignin degradation, ligninolytic enzymes activities and exopolysaccharide production by Grifola frondosa strains cultivated on oak sawdust
Mikiashvili, Nona A;Isikhuemhen, Omoanghe S;Ohimain, Elijah I;
Brazilian Journal of Microbiology , 2011, DOI: 10.1590/S1517-83822011000300031
Abstract: fourteen strains of grifola frondosa (dicks.) s. f. gray, originating from different regions (asia, europe and north america) were tested for lignin degradation, ligninolytic enzyme activities, protein accumulation and exopolysaccharide production during 55 days of cultivation on oak sawdust. lignin degradation varied from 2.6 to7.1 % of dry weight of the oak sawdust substrate among tested strains. the loss of dry matter in all screened fungi varied between 11.7 and 33.0%, and the amount of crude protein in the dry substrate varied between 0.94 to 2.55%. the strain, mbfbl 596, had the highest laccase activity (703.3 u/l), and the maximum peroxidase activity of 22.6 u/l was shown by the strain mbfbl 684. several tested strains (mbfbl 21, 638 and 662) appeared to be good producers of exopolysaccharides (3.5, 3.5 and 3.2 mg/ml respectively).
Host Immune Response to Intestinal Amebiasis
Shannon N. Moonah,Nona M. Jiang,William A. Petri Jr
PLOS Pathogens , 2013, DOI: 10.1371/journal.ppat.1003489
Мальчики-мажоры карабахской войны: жизненные истории военной молодёжи [ChildsoldiersoftheKarabakhWar: Life Stories of a Militarised “ Youth ”].
Нона Шахназарян / Nona Shakhnazarian
Journal of Power Institutions in Post-Soviet Societies , 2008,
Abstract: The article deals with young veterans of the Karabakh War (1991-1994). It is focused on ordinary teenagers whose lives became part of warfare. The harsh, shocking hardships they experienced during the war are far from being named “youth culture of leisure” (that is to say youth sub/contra culture as a social phenomenon, rather than biological age scale). It seems that those adolescents have skipped a stage of their lives. The article touches upon the young veterans’ Post-Traumatic Stress Disorder (PTSD) syndrom and how they try to overcome it. Some of them are still traumatized by the consequences of war after more than a decade. Some have undergone identity-transformations that affect their present life trajectories.
ANCA-Negative Pulmonary-Renal Syndrome with Pathologic Findings Suggesting Thrombotic Thrombocytopenic Purpura
Mitra Naseri,Nona Zabolinejad
Iranian Journal of Pediatrics , 2007,
Abstract: Background: Thrombotic thrombocytopenic purpura (TTP) is a rare disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, neurologic abnormalities, fever and renal dysfunction. The disease classically spares the lung tissue, but recently some cases were reported that presented with respiratory involvement (adult respiratory distress syndrome or pulmonary-renal syndrome). Presentation with pulmonary-renal syndrome has rarely been reported. Case Presentation: We report a 14-yaers-old boy admitted to the hospital because of a biochemical evidence of renal failure. Two days after admission he developed a high fever, hemoptysis and respiratory distress. Open kidney biopsy was performed and confirmed the diagnosis and finally the patient expired due to neurologic involvement. Conclusion: This case is presented to discuss the need to update the criteria for TTP diagnosis and considering TTP in the differential diagnosis of pulmonary renal syndromes.
A rare case report of endobronchial actinomycosis with severe hemoptysis
Fariba Rezaeetalab,Nona Zabolinejad
Iranian Journal of Otorhinolaryngology , 2009,
Abstract: Introduction: Endobronchial actinomycosis is an uncommon disease with symptoms of cough, hemoptysis and endobronchial obstruction. It can imitate the presentations of pulmonary tuberculosis or cancer. Case Report: A 68 year-old male was referred with the complaint of fever, cough and severe hemoptysis. His weight loss during the last 3 months was 8 kgs. Blood tests indicated mild leukocytosis and increased sedimentation rate. In his chest radiography, opacity was observed in the left lower pulmonary lobe. Fiberoptic Bronchoscopy revealed a nodular lesion in the lateral segment of left lower lobe. Pathologic diagnosis confirmed the presence of actinomycosis. Conclusion: Although endobronchial actinomycosis is uncommon, it is included in the differential diagnosis of endobronchial obstructive lesions, especially bronchogenic malignant tumors and bronchial tuberculosis. In areas with high incidence of tuberculosis, endobronchial actinomycosis can mimic its symptoms.
A brief analysis of regional disparities in the use of hospital services for acute cases in Romania
Nona Delia CHIRIAC
Management in Health , 2010,
Abstract: Purpose: to study the geographical disparities in the consumption of hospital services and their potential causesMethodology:The study presented in the article is a descriptive observation one, conducted for the year 2008. The analysis included all the cases discharged from continuous acute care hospitals in Romania, considered valid.There were studied the following hypotheses:the excess in consumption of hospital services (measured by the standardized ratio of the cases and of the hospitalization days, according to the age group) is associated with a lower standard of living and a greater number of bedsthe excess consumption of hospital services generates a reduction of the mortality in the general population in that geographic areas (measured by the standardized mortality report by age group).The association between these variables was tested for the 8 development regions (the Spearman correlation test) respectively for the patient's home county (the Pearson correlation test), using the statistical analysis software SPSS.Results:Although differences in the consumption of among the different development regions, respectively among the counties, are obvious, no association between the high volume of hospital services and mortality was found; therefore, it can be assumed that excessive consumption of services is not accompanied by an improving of the health status of patients as mortality reduction. The income influences poorly the volume and the outcome of the healthcare, but correlates with the number of hospital beds in counties with a higher income level. There is no correlation between the number of hospital beds and the volume of the consumed services. Although, at county level, the correlation between the number of cases and the hospitalization days are proven, there are development regions that surprises by the overall scarcity of cases, but excess hospital days.Conclusions There are variations in hospital care practice, which should be measured and analyzed in terms of causes, and should be prevented through monitoring the service needs, data reporting and the careful assessment of the structures and the resources.
The evolution of hospital activity, variations in surgical practice, overall and addressed to vulnerable patients
Nona Delia Chiriac
Management in Health , 2010,
Abstract: The whole modern health management aims to shift the healthcare from hospitals to outpatient care. During last decades, EU reduced the number of hospital beds, the length of stay, trying to improve the efficiency of the health system. Is this possible to be done, preserving in the same time the equal coverage with health services, limiting the practice variations? The present study presents the evolution of the main indicators for the volume of hospital and surgical activity; some of differences recorded among regions or patient groups, and identifies features of the surgical practice concerning some vulnerable age groups of patients: children and elderly. The conclusions point out that the hospital activity increased, but varied among districts and age groups. There are some surgical interventions that occur very often in children or consume many hospital days in elderly that might need special analysis in order to evaluate their appropriateness or efficiency.
Alina-Nona Petric
Revista de Economie Sociala , 2012,
Alina-Nona Petric
Revista de Economie Sociala , 2012,
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