OALib Journal期刊

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匹配条件: “N. Suditu” ,找到相关结果约197571条。
C. Ristescu,C. Costache,N. Suditu,C. Novac
Jurnalul de Chirurgie , 2011,
Abstract: Objective: The study aimed to identify the variation of biological parameters recorded at the patients with obstructive renal failure treated with percutaneous nephrostomy. Material and method: The retrospective study investigated the data of 244 patients admitted in our department and treated with percutaneous nephrostomy for obstructive renal failure during January 2005 – December 2007. Demographical data, investigation, operation notes, indication, biological parameters trends (creatinine, haematocrit, haemoglobin, kaliemia, alkaline reserve), complications and hospital stay were recorded. The biological parameter trends (creatinine, haematocrit, haemoglobin, kaliemia, alkaline reserve) was analysed. The median preoperative and postoperative values of those parameters was compared. Statistical analysis was performed.Results: The median preoperative/discharge values of creatinine were 8.29mg%(1.6-26.3 mg%) comparing to 3.63mg% (0.64-13 mg%). A return to normal renal function at the discharge time was noted in 23 patients (9.7%). Hyperpotasemia (K>5.1mEq/l) on admission was found in 134 patients (54.9%). The median preoperative/discharge values of potassium were 5.71mEq/l comparing to 4.8 mEq/l.The median hospitalization time was 8.7 days with a median ICU stay of 3.3 days. The recorded mortality was 3.2% (8 patients) with an average time of 5.8 days between the operatory time and exitus time. Conclusions: The most frequent causes of obstructive renal failure necessiting percutaneous nephrostomy are malignancies. After renal percutaneous drainage the renal function improvement is fast and significant. In the postoperative period the onset of severe hypokalemia call for aggressive treatment in the same time with volume repletion.
C. Novac,N. Suditu,B. Novac,V.D. Radu
Jurnalul de Chirurgie , 2007,
Abstract: Twelve years ago, finasteride, the first 5α-reductase inhibitor, was introduced as drug therapy for benign prostatic hyperplasia, and more recently dutasteride has emerged as an alternative. The efficacy, safety and ability of these 5α-reductase inhibitors to reverse the natural progression of benign prostatic hyperplasia have been convincingly demonstrated and both drugs are now welt established in the medical armamentarium against the disease. Given the multifactorial etiology of benign hyperplasia, the usefulness of 5α-reductase inhibitors in combination with a adrenergic blockers has also been investigated and justified in select patients. Wider applications of 5α-reductase inhibitors are also emerging, though their perhaps most important new role as chemopreventive agents remains unclear.
Access to the health services in the context of economic restructuring. Case study: Brasov, Campulung and Ramnicu Sarat (Romania)
Cinq Continents , 2012,
Abstract: Accesso ai servizi sanitari nel contesto della ristrutturazione economica nei municipi Ramnicu Sarat, Campulung e Brasov. Questo studio affronta una serie di questioni riguardanti l'accesso ai servizi sanitari delle persone nei municipi Ramnicu Sarat, Campulung, Brasov nel periodo post-comunista. I cambiamenti economici, politici e sociali dopo il 1990 hanno portato alla configurazione nella forma attuale del sistema sanitario, con effetti importanti sulla popolazione. L’ approccio comparativo delle situazioni nei tre municipi con caratteristiche diverse come numero di abitanti, posizione e livello di sviluppo economico, ha permesso l'identificazione di elementi comuni, come per esempio: il regresso del sistema sanitario pubblico a favore di quello privato, bassa qualit{ delle cure e diminuzione del personale medicale. L'accento è stato messo sull’analisi degli indicatori che rivela il grado di sviluppo del sistema sanitario riportato a 10000 persone.
Labour market- effects of economic restructuring in Ramnicu S rat, Brasov and Campulung municipalities
Cinq Continents , 2012,
Abstract: Il mercato del lavoro: effetti di riorganizzazione economica nei municipi Ramnicu Sarat, Brasov si Campulung. I processi di ristrutturazione e privatizzazione hanno giocato un ruolo importante nella definizione di alcune caratteristiche del mercato del lavoro. L'evoluzione del mercato del lavoro dopo il 1990, riflette i cambiamenti nell'economia dopo il processo di ristrutturazione eprivatizzazione, sentiti sul mercato attraverso: la scomparsa dei posti di lavoro, la diminuzione del numero della popolazione occupata, significativa crescita della disoccupazione. L’analisi del mercato del lavoro ci mostra una serie di indicatori nel valutare il grado di coinvolgimento della popolazione o dei vari gruppi, nell'attivita’produttiva o non produttiva. La forza di lavoro, sia dal punto di vista quantitativo che qualitativo dipende dallo sviluppo economico e l'evoluzione della popolazione totale.
Implementation of a Higher Quality dc Power Converter  [PDF]
N. N. Barsoum
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.22012
Abstract: Many single and three-phase converters are well developed, and covered up in most of electric markets. It is used in many applications in power systems and machine drives. However, an exact definite output signal from the dc side still not recognized. The waveforms of output voltage and current demonstrate an imperfect dc signal and constitute losses, harmonic distortion, low power factor, and observed some ripples. An approximately perfect rectifier bridge is the aim of this research. Perhaps it gives the ability to identify the parameters of the converter to obtain, as much as possible, a perfect dc signal with less ripple, high power factor and high efficiency. Design is implemented by simulation on Power Simulator PSIM, and practically, a series regulator LM723 is applied to provide regulating output voltage. Comparisons of both simulation and hardware results are made to observe differences and similarities.
Estimation of Sensitivity of the DS/AHP Method While Solving Foresight Problems with Incomplete Data  [PDF]
N. Pankratova, N. Nedashkovskaya
Intelligent Control and Automation (ICA) , 2013, DOI: 10.4236/ica.2013.41011

The paper provides mathematical analysis of sensitivity of different combination rules in the DS/AHP method when an alternative is added to the set of decision alternatives while solving foresight problems. Different cases of rank reversals are defined and two sets of conditions for these cases using the method DS/AHP are considered. Rank reversals are illustrated when the DS/AHP method is used to solve practical problem of critical technologies of energy conservation and power efficiency evaluation in Ukraine. It is shown that the DS/AHP method is not sensitive to exclusion (or addition) of an irrelevant decision alternative from (or to) the set of decision alternatives.

Change of the Microorganisms Quantity in Irrigative Gleyey-Yellow under Vegetable Soils  [PDF]
N. ?. Orudzheva
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.312213
Abstract: The results of the long-term investigations in dynamics for study of the conditions of taxonomic groups of microorganisms of irrigated gleyey-yellow soils of the subtropical zone under vegetable crops in rotation with the continuous growing of these cultures have been presented. The results of the researches study demonstrated an important vibration of the microorganisms quantity under growing cultures happens. The most quantity of microorganisms, consuming organic nitrogen is observed in irrigative gleyey-yellow soils of the humid subtropical zone. Intensity of mineralization of organic matters was lower in irrigative gleyey-yellow soils. A quantity of microorganisms was lower, but a coefficient of mineralization was higher under continuous cultures as compared the analogous soils under crop rotation. These data show that a type of the soil influence on the rhizosphere microflora insignificantly, while plant shows a significant effect on its quantity and compositions.
Wavelet-Based Density Estimation in Presence of Additive Noise under Various Dependence Structures  [PDF]
N. Hosseinioun
Advances in Pure Mathematics (APM) , 2016, DOI: 10.4236/apm.2016.61002
Abstract: We study the following model: \"\". The aim is to estimate the distribution of X when only \"\"?are observed. In the classical model, the distribution of \"\"?is assumed to be known, and this is often considered as an important drawback of this simple model. Indeed, in most practical applications, the distribution of the errors cannot be perfectly known. In this paper, the author will construct wavelet estimators and analyze their asymptotic mean integrated squared error for additive noise models under certain dependent conditions, the strong mixing case, the β-mixing case and the ρ-mixing case. Under mild conditions on the family of wavelets, the estimator is shown to be \"\"-consistent and fast rates of convergence have been established.
Semi Numerical Solution for a Boundary Value Problem  [PDF]
N.P. Pai, N. N. Katagi, Krishna B. Chavaraddi
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.31006

The flow of viscous incompressible fluid through a tube is considered. The similarity transformation is used to reduce the governing equations into nonlinear ordinary differential equation. The solution procedure includes application of long series analysis with polynomial coefficients. The series representing physical parameters (\"\" ) reveal qualitative features which are comparable to pure numerical results. The analysis enables in extending region of validity. A complete description of the solutions is presented.

Dynamic Changes in Lipid Peroxidation and Antioxidant Level in Rat’s Tissues with Macrovipera lebetina obtusa and Montivipera raddei Venom Intoxication  [PDF]
N. A. Zaqaryan, N. A. Ghazaryan, N. M. Ayvazyan
Journal of Biophysical Chemistry (JBPC) , 2014, DOI: 10.4236/jbpc.2014.54017
Abstract: We investigated the balance of free radicals in different tissues (liver, heart, brain and muscle) of rats in course of in vivo and in vitro processing by Macrovipera lebetina obtusa (MLO) and Montivipera raddei (MR) snake venoms. Chemiluminescence (ChL) levels were examined in tissue assays after incubation (at 37 °C for a period of 10 min) with venom for in vitro experiments and in tissue assays isolated of 10 min after venom injection for in vivo experiments. The TBA-test was also performed to confirm the free radical expression. The activities of antioxidant enzymes (such as superoxide dismutase and glutathione peroxidase) in isolated tissues were detected by spectro-photometry. During the in vitro processing chemiluminescence levels of tissue homogenates significantly decreased, while in course of in vivo intoxication the level of ChL was elevated in brain and liver; lipid peroxidation also increased in brain tissue, but there was no significant balance change in other tissues; the activity of superoxide dismutase mainly correlated with changes of free radical balance during intoxication. On the contrary, the activity of glutathione peroxidase showed the reverse tendencies to change. We suggest that free radicals and their oxidative stresses may play a role in the early stage of intoxication causing the so-named “spreading-effect”, which is very characteristic for the venom of vipers.

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