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Search Results: 1 - 10 of 18837 matches for " Ruxanda Bod?rl?u "
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ASSESSMENT OF TOXICITY OF INDUSTRIAL WASTES USING CROP PLANT ASSAYS
Carmen Alice Teac?,Ruxanda Bodrlu
BioResources , 2008,
Abstract: Environmental pollution has a harmful action on bioresources, including agricultural crops. It is generated through many industrial activities such as mining, coal burning, chemical technology, cement production, pulp and paper industry, etc. The toxicity of different industrial wastes and heavy metals excess was evaluated using crop plant assays (germination and hydroponics seedlings growth tests). Experimental data regarding the germination process of wheat (from two cultivars) and rye seeds in the presence of industrial wastes (thermal power station ash, effluents from a pre-bleaching stage performed on a Kraft cellulose – chlorinated lignin products or chlorolignin), along with use of an excess of some heavy metals (Zn and Cu) are presented here. Relative seed germination, relative root elongation, and germination index (a factor of relative seed germination and relative root elongation) were determined. Relative root elongation and germination index were more sensitive indicators of toxicity than seed germination. The toxic effects were also evaluated in hydroponics experiments, the sensitivity of three crop plant species, namely Triticum aestivum L. (wheat), Secale cereale (rye), and Zea mays (corn) being compared. Physiological aspects, evidenced both by visual observation and biometric measurements (mean root, aerial part and plant length), as well as the cellulose and lignin content were examined.
STRUCTURAL CHANGES EVIDENCED BY FTIR SPECTROSCOPY IN CELLULOSE MATERIALS AFTER PRE-TREATMENT WITH IONIC LIQUID AND ENZYMATIC HYDROLYSIS
Iuliana Spiridon,Carmen Alice Teaca,Ruxanda Bodrlu
BioResources , 2011,
Abstract: Attempts were made to enhance the hydrolysis of Asclepias syriaca (As) seed floss and poplar seed floss (PSF) by cellulase after pre-treatment with ionic liquids. Two ionic liquids, namely 1-butyl-3-methylimidazolium chloride [BMIM]Cl and 1-ethyl-3-methylimidazolium tetrachloroaluminate [EMIM]Cl-AlCl3, were used. In comparison with conventional cellulose pretreatment processes, the ionic liquids were used under a milder condition corresponding to the optimum activity of cellulase. Hydrolysis kinetics of the IL-treated cellulose materials was significantly enhanced. The initial hydrolysis rates for IL-treated cellulose materials were greater than those of non-treated ones. The structural modifications of hydrolyzed cellulose materials were analyzed using FTIR spectroscopy.
CHEMICAL MODIFICATION OF BEECH WOOD: EFFECT ON THERMAL STABILITY
Ruxanda Bodrlu,Carmen Alice Teac?,Iuliana Spiridon
BioResources , 2008,
Abstract: Beech sawdust was reacted with phthalic (PA) and maleic (MA) anhydrides for chemical modification. The influence of reaction time and anhydride amount was investigated. IR spectra gave evidence of wood esterification. Thermogravimetric investigation of chemically modified wood indicated a better thermal stability (mainly for wood treated with phthalic anhydride) in comparison with the untreated wood.
PREPARATION AND CHARACTERIZATION OF COMPOSITES COMPRISING MODIFIED HARDWOOD AND WOOD POLYMERS/POLY(VINYL CHLORIDE)
Ruxanda Bodrlu,Carmen Alice Teac?,Iuliana Spiridon
BioResources , 2000,
Abstract: Chemical modification of hardwood sawdust from ash-tree species was carried out with a solution of maleic anhydride in acetone. Wood polymers, lignin, and cellulose were isolated from the wood sawdust and modified by the same method. Samples were characterized by Fourier transform infrared spectroscopy (FTIR), providing evidence that maleic anhydride esterifies the free hydroxyl groups of the wood polymer components. Composites comprising chemically modified wood sawdust and wood polymers (cellulose, lignin)-as variable weight percentages-, and poly (vinyl chloride) were obtained and further characterized by using FTIR spectroscopy and scanning electron microscopy (SEM). The thermal behavior of composites was investigated by using the thermogravimetric analysis (TGA). In all cases, thermal properties were affected by fillers addition.
Voter Beliefs, Electoral Concerns and Undocumented Migration  [PDF]
Ruxanda Berlinschi, Mara Pasquamaria Squicciarini
Open Journal of Political Science (OJPS) , 2013, DOI: 10.4236/ojps.2013.34020
Abstract:

If voters underestimate the benefits that immigrants bring to their country, policy makers need to campaign for suboptimal migration levels in order to win elections. Once in power, they face a trade-off between keeping electoral promises by restricting immigration and stimulating the economy by favoring immigration. One solution to this trade-off may be maintaining high barriers to legal migration, while keeping a blind eye on undocumented migration.

EU's Influence on Romania's Judicial System: A Step Towards Democratic Consolidation?
Mihaela Ruxanda
Sfera Politicii , 2012,
Abstract: This article explores the general theme of how international actors, such as European Union, influence new democracies from Central and Eastern Europe. The contention that as long as the EU requirements regarding domestic aspects of the post communist member states are high, the reform and change at the national level are low, demands evidence and explanation. Therefore, a major task of this study is to provide a clear and detailed account of the impact of membership requirements on the process of democratization in Romania. In order to establish a link between the two variables, the status of the judicial system was addressed in depth. Thus, we have concluded that the implementation of EU’s requirements in Romania has only succeeded slightly and partially. Though some progress has been recorded in terms of structural aspects, when it came to substantive change, a certain reluctance to commit to the full implementation of reforms has led to numerous failures in complying with the EU requirements.
Innovative digital learning
Ion SMEUREANU,Gheorghe RUXANDA
Informatica Economica Journal , 2007,
Abstract: The new programming technologies allow for the creation of components which can be automatically or manually assembled to reach a new experience in knowledge understanding and mastering or in getting skills for a specific knowledge area. A Visual C# .NET implementation under development is discussed.
A comparison of cardiovascular risk factors for ten antipsychotic drugs in clinical practice
Bodén R, Edman G, Reutfors J, stenson CG, sby U
Neuropsychiatric Disease and Treatment , 2013, DOI: http://dx.doi.org/10.2147/NDT.S40554
Abstract: comparison of cardiovascular risk factors for ten antipsychotic drugs in clinical practice Original Research (477) Total Article Views Authors: Bodén R, Edman G, Reutfors J, stenson CG, sby U Published Date March 2013 Volume 2013:9 Pages 371 - 377 DOI: http://dx.doi.org/10.2147/NDT.S40554 Received: 20 November 2012 Accepted: 18 January 2013 Published: 19 March 2013 Robert Bodén,1,2 Gunnar Edman,3,4 Johan Reutfors,2 Claes-G ran stenson,3 Urban sby3,4 1Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden; 2Department of Medicine Solna, Centre for Pharmacoepidemiology, Karolinska Institutet, Stockholm, Sweden; 3Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; 4Department of Psychiatry, Tiohundra AB, Norrt lje, Sweden Abstract: It is well known that abdominal obesity, dyslipidemia, and insulin resistance are highly prevalent in patients receiving maintenance treatment with antipsychotics, but there is limited knowledge about the association between cardiovascular risk factors and treatment with antipsychotic drugs. In this naturalistic study we investigated a sample of 809 antipsychotic-treated patients from Swedish psychosis outpatient teams. Cardiovascular risk factors (eg, metabolic syndrome, homeostasis model assessment of insulin resistance, and low-density lipoprotein values) were measured, and their associations to current antipsychotic pharmacotherapy were studied. Ten antipsychotic drugs were compared in a stepwise logistic regression model. For the patients, the presence of the components of metabolic syndrome ranged from 35% for hyperglycemia to 64% for elevated waist circumference. Hypertriglyceridemia was associated with clozapine (odds ratio [OR] = 1.81, 95% confidence interval [CI] 1.08–3.04), reduced high-density lipoprotein with both clozapine and olanzapine (OR = 1.73, 95% CI 1.01–2.97; and OR = 2.03, 95% CI 1.32–3.13), hypertension with perphenazine (OR = 2.00, 95% CI 1.21–3.59), and hyperglycemia inversely with ziprasidone (OR = 0.21, 95% CI 0.05–0.89) and positively with haloperidol (OR = 2.02, 95% CI 1.18–3.48). There were no significant relationships between any of the antipsychotic drugs and increased waist circumference, homeostasis model assessment of insulin resistance, or low-density lipoprotein levels. In conclusion, treatment with antipsychotic drugs is differentially associated with cardiovascular risk factors, even after adjusting for waist circumference, sex, age, and smoking.
THE CONTRIBUTION OF THE GENERAL URBANISM PLAN TO ENVIRONMENTAL PROTECTION IN NEGRE TI COMMUNE, NEAM COUNTY
Oana-Magdalena D?rlu,Marin Mar?
Present Environment and Sustainable Development , 2011,
Abstract: The commune is placed in the central part of Neam county, has a surface of 3493 ha and a total population of 1941 inhabitants (2005). It extends on the eastern summits of Stani oara Mts. and the Moldavian Subcarpathians, respectively the Crac u-Bistri a Depression. The climate is continental with excessive trends, with a mean temperature of 8.6o C and average annual precipitations of 628.8 mm. The whole territory belongs to Horai a hydrographic basin, a tributary of Alma . The existing land use categories evidence the dominant agricultural and subordinately forestry character of the commune. After the application of the General Urban Plan (GUP) to 777.12 ha the inhabited surface and that designed for economic or social activities will be increased. The commune is provide with electric energy, communication network with optical fiber and asphalted access roads. The problems stand in the water alimentation from wells, the unregularization of Horai a’s floodplain, the lack of water and natural gasesalimentation and the collecting of sewage waters. The determinations regarding drinking water from July 2009 evidence the bacteriological pollution of the underground waters from the center of the commune. The existing dysfunctions thus make directions for future actions. Natural risks are given by floods in the inhabited area and landslides outside it, and the measures imply the improvement of the inhabiting conditions
SOIL RESOURCES AND RISK FACTORS IN THE ADMINISTRATIVE TERRITORY OF IBUCANI COMMUNE, NEAM COUNTY
Oana-Magdalena D?rlu,Marin Mar?
Present Environment and Sustainable Development , 2011,
Abstract: The administrative territory of ibucani spreads on both banks of Umbrari brook, right side tributary of Moldova. It is a territory in which dominate agricultural usage of lands, from which arable terrains detain a percentage of 70 %,pastures 12% and forests 10% of the total. From a geomorphologic viewpoint, the territory belongs to the Moldavian Tableland and extends on two of its sub-units: the Moldova – Siret corridor to the east and the Peri-Carpathian Piedmont Hills to the west. The dominant relief is of cuesta type. On the cuesta reverse dominates a slow evolution, in the presence of sheet erosion. On the cuestas and the upper basin of Umbrari erosion is intense and accompanied by landslides, gully erosion, landfalls, consequence of the presence of loams and loess-like materials that favor the development of erosion processes. The diversity of soil forming conditions has led to the formation in this territory of a soil cover with large areas at the terraces’ level and on the cuesta reverse, and reduced extension areas, more diverse as typology, at the level of the piedmont hills. In consequence, the largest extension is held by Luvisols, with a percentage of 47.59%, followed by Chernisols (22.48%) and Protisols (19.13 % of the territory). On the overall, have been identified eleven risk factors (limitations) that affect the productive capacity of terrains or hardens the life conditions of the population
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