bluuebunny/crossref_metadata_2025_split huggingface dataset:
Particle filter in power system state estimation – bad measurement data and branch disconnection
Authors: Kozierski Piotr , Lis Marcin , Owczarkowski Adam , Horla Dariusz 
Published: June 2015

Abstract
An approach to power system state estimation using a particle filter has been proposed in the paper. Two problems have been taken into account during research, namely bad measurements data and a network structure modification with rapid changes of the state variables. For each case the modification of the algorithm has been proposed. It has also been observed that anti-zero bias modification has a very positive influence on the obtained results (few orders of magnitude, in comparison to the standard particle filter), and additional calculations are quite symbolic. In the second problem, used modification also improved estimation quality of the state variables. The obtained results have been compared to the extended Kalman filter method
Conductance-controlled global-compensation-type shunt active power filter
Authors: Szromba Andrzej 
Published: June 2015

Abstract
This paper presents a load equivalent conductance based control method for a shunt active power filter. The principle of energy balance in the circuit, which means between supplying source - active filter - load, is used to obtain the control formula. The natural inertia of the active filter action is exploited, so no PI regulators are needed. The active filter can compensate for non-active current and, additionally, can stabilise the supplying source active power. In a case of generating loads energy harvesting is possible. The presented method is useful as well for voltage-source as current-source inverter based active filters, and for DC system as well as for AC single- or three-phase one.
Dynamic response improvement of hybrid system by implementing ANN-GA for fast variation of photovoltaic irradiation and FLC for wind turbine
Authors: Izadbakhsh Maziar , Rezvani Alireza , Gandomkar Majid 
Published: June 2015

Abstract
In this paper, dynamic response improvement of the grid connected hybrid system comprising of the wind power generation system (WPGS) and the photovoltaic (PV) are investigated under some critical circumstances. In order to maximize the output of solar arrays, a maximum power point tracking (MPPT) technique is presented. In this paper, an intelligent control technique using the artificial neural network (ANN) and the genetic algorithm (GA) are proposed to control the MPPT for a PV system under varying irradiation and temperature conditions. The ANN-GA control method is compared with the perturb and observe (P&O), the incremental conductance (IC) and the fuzzy logic methods. In other words, the data is optimized by GA and then, these optimum values are used in ANN. The results are indicated the ANN-GA is better and more reliable method in comparison with the conventional algorithms. The allocation of a pitch angle strategy based on the fuzzy logic controller (FLC) and comparison with conventional PI controller in high rated wind speed areas are carried out. Moreover, the pitch angle based on FLC with the wind speed and active power as the inputs can have faster response that lead to smoother power curves, improving the dynamic performance of the wind turbine and prevent the mechanical fatigues of the generator
A transformer winding deformation detection method based on the analysis of leakage inductance changes
Authors: Jiansheng Li , Fengbo Tao , Chao Wei , Yuncai Lu , Peng Wu , Mengzhou Zhu , Miao Yu 
Published: June 2015

Abstract
The detection of transformer winding deformation caused by short-circuit current is of great significance to the realization of condition based maintenance. Considering the influence of environment and measurement errors, an online deformation detection method is proposed based on the analysis of leakage inductance changes. First, the operation expressions are derived on the basis of the equivalent circuit and the leakage inductance parameters are identified by the partial least squares regression algorithm. Second, the amount of the leakage inductance samples in a detection time window is determined using the Monte Carlo simulation thought, and then the samples in the confidence interval are obtained. Last, a criteria is built by the mean value changes of the leakage inductance samples and the winding deformation is detected. The online detection method considers the random fluctuation characteristics of the leakage inductance samples, adjust the threshold value automatically, and can quantify the change range to assess the severity. Based on the field data, the distribution of the leakage inductance samples is analyzed to obey the normal function approximately. Three deformation experiments are done by different sub-winding connections and the detection results verify the effectiveness of the proposed method
Computer modeling of hippocampal CA1 pyramidal cells - a tool for in silico experiments
Authors: Metz Júlia , Szilágyi T. , Perian M. , Orbán-Kis K. 
Published: June 2015

Abstract
Objective. In silico experiments use mathematical models that capture as much as possible from the properties of the biological system under investigation. Our aim was to test the publicly available CA1 pyramidal cell models using the same simulation tasks, to compare them, and provide a systematic overview of their properties in order to improve the usefulness of these models as a tool for in silico experiments.
Methods. Parameters describing the morphology of the cells and the implemented biophysical mechanisms were collected from the Model DB database of Sense Lab Project. This data was analyzed in correlation with the purpose for which each particular model was developed. Multicompartmental simulations were run using the Neuron modeling platform. The properties of the action potentials generated in response to current injection, the firing pattern and the dendritic back-propagation were analyzed.
Results. The studied models were optimized to explore different physiological and pathological properties of the CA1 pyramidal cells. We could identify four broad classes of models focusing on: (i) initiation of the action potential, firing pattern and spike timing, (ii) dendritic backpropagation, (iii) dendritic integration of synaptic inputs and (iv) neuronal network activity. Despite the large variation of the active conductances implemented in the models, the properties of the individual action potentials were quite similar, but even the most complex models could not reproduce all studied biological phenomena.
Conclusions. At the moment the “perfect” pyramidal cell model is not yet available. Our work, hopefully, will help finding the best model for each scientific question under investigation.
Eficacy of trichloroacetic acid peel versus 15% topical azelaic acid gel in the treatment of acne vulgaris – a comparative study
Authors: Al Hussein Stela Mariana , Buicu F. , Maier Dalila , Al Hussein H. , Ciurba Adriana , Al Hussein Hamida , Dogaru Maria Titica 
Published: June 2015

Abstract
Objectives: The aim of this study was to compare the efficacy and tolerability of 20% trichloroacetic acid (TCA) peel with 15% azelaic acid gel, a standard antiacne topical treatment.
Materials and methods: 51 patients aged between 16-40 years, with mild and moderate acne, were randomized into two groups. Before the treatment were investigated the patients clinical features and hygienic habits, the previous antiacne treatments and feed-back to them. No cases under treatment with contraceptive pills or antiacne medication that could interfere with the results, were included. For a period of eight weeks, 27 patients (group A) were treated with 15% azelaic acid gel, twice daily, and 24 patients (group B) underwent four sessions of 20% TCA peels, at 14 days interval. The efficacy was evaluated by acne lesions counting, at baseline and at 8 weeks. Adverse effects incidence (erythema, local skin irritation), as well as the satisfaction degree of patients, were investigated.
Results: Was observed a mean reduction in the number of acne lesions of 32,36% for the group A and 69,36% for the group B. There was no statistically significant difference between the average number of acne lesions before treatment between the two groups. The mean number of acne lesions after the treatment was significantly different (p<0,0001), 20% TCA peels showed superior results than 15% azelaic acid gel. Additionally, 96% of patients who underwent TCA peels were very satisfied with the results obtained.
Conclusions: TCA peel is an efficient and well tolerated method for the treatment of acne vulgaris.
Correlations between depression, cognitive status, functional scores, disability and lesion load in multiple sclerosis treated with interferon beta 1a
Authors: Maier Smaranda , Bălașa Rodica , Bajko Z. , Maier Anca , Șchiopu Bianca , Buruian M. 
Published: June 2015

Abstract
Introduction: Depression and cognitive impairment are the most frequent mental disorders in multiple sclerosis (MS) and represent an important cause of morbidity and mortality. The aim of the study was to analyse the main determinants of depression in multiple sclerosis.
Materials and methods: Thirty-two patients with relapsing remitting multiple sclerosis (RRMS), treated with Interferon Beta 1a, without relapses and corticosteroid treatment in the last 30 days, were included in the study. The mean age of the patients was 35.4±9.2 years, M/F ratio 0.33. Depression level was evaluated by the Romanian version of Beck Depression Inventory (BDI) and the cognitive function with Paced Auditory Serial Addition Test 3 (PASAT 3), Symbol Digit Modalities Test (SDMT). The functional status and disability level of the patients were evaluated with Multiple Sclerosis Functional Composite and Expanded Disability Status Scale. In all patients a cerebral MRI with intravenous contrast administration was performed using a 1.5T MRI device.
Results: Twenty-three patients were free of depression (score 1-10), 4 patients presented mild mood disturbance (score 11-16), 3 borderline clinical depression (score 17-20) and 2 moderate depression (score 21-30). The mean BDI score was 8.71±7.16. BDI score correlated significantly with EDSS (R=0.38, p=0.03), PASAT 3 (R=-0.42, p=0.01), SDMT (R=-0.58, p=0.0007), Timed 25-Foot Walk (R=0.43, p=0.01) and 9-Hole Peg Test (R=0.45, p=0.008). From the EDSS functional scores, significant correlations were found with the urinary score (R=0.4, p=0.01) and sensitive score (R=0.49, p=0.004). BDI score correlated significantly with the total number of T2 lesions (R=0.31, p=0.05) while there was no correlation with the number of active lesions.
Conclusions: The main determinants of depression in RRMS patients are the cognitive impairment, the affection of fine hand movements (9-HP), gait impairment (T25FT) and bladder and sensitive dysfunction.
A Novel Disease Caused by Increase of the Lifespan: Chronic Cutaneous Insufficiency Syndrome or Dermatoporosis
Authors: Badea M.A. , Morariu S.H. , Sin Anca 
Published: June 2015

Abstract
Nowadays we are witnessing an increase in the medium lifespan caused by improved living conditions. The main factor in skin ageing is represented by the chronic exposure to ultraviolet radiation, however long term use of systemic or topical corticosteroids could produce similar effects on the skin. Chronic cutaneous insufficiency syndrome or dermatoporosis was described in 2007, being caused by a decreased activity of the hyaluronic acid, the main component of the extracellular matrix. This mechanism translates clinically through atrophy in the forearms or calves. Other injuries develop on this background including skin dissecting hematoma, which is a medical emergency. Therapeutic attitude consists of local application of preparations containing hyaluronic acid and retinaldehyde and discerning use of corticosteroid therapy. Photoprotection has a certain role in preventing the disease. While today dermatoporosis is a little known dermatosis even among dermatologists, in the future we will see a significant increase in the incidence of the disease and its gravity.
The Management of the Patient with Elevated Prostate Specific Antigen and a Negative Initial Prostate Biopsy
Authors: Vida A.O. , Szöllősi A. , Maier A. , Boja B.M. , Orsolya Mártha 
Published: June 2015

Abstract
Background: The prostate cancer (PCa) is the second most common cancer amongst men. An elevated prostate specific antigen (PSA) level can lead to PCa suspition, thus the confirmation has to be a histopathological one. However, not all increased PSA level means prostate cancer.
Material and Method: This retrospective study presents the results of 422 ultrasound guided prostate biopsy (PB) performed at the Clinic of Urology Târgu- Mureş, between 2011-2012. Inclusion criteria: patients with at least one negative PB and an elevated value of PSA.
Results: In a two year period, from the total of 422 PB (100%), in 179 (42.42%) patients the histopathological result was “negative”. In 154 (86%) of cases ultrasound guided biopsies were performed, mostly with an initial 6 core (98- 54.74% of patients). Average PSA level was 13.45 ng/ml (0.49-100 ng/ml), the histological findings confirmed PCa in 52.58% cases, normal prostatic tissue in 141 cases (78.77%), atypical small acinar proliferation in 12 patients (6.70%), prostate atrophy in 11 males (6.14%), benign prostatic hyperplasia in 10 cases (5.59%) and prostatitis in 5 cases (2.80%). In 30 cases (16.75%) rebiopsy was performed with a number of 10- 12 cores.
Conclusions: In order to increase PCa detection we should perform more cores during PB. In „negative” histopathological cases PSA should be monitorised and the biopsy should be repeated after 6 to 8 weeks from the initial biopsy. Patient’s compliance plays a vital role in the follow-up of the procedure
Factors Determining the Susceptibility of Cows to Mastitis and Losses Incurred by Producers Due to the Disease – A Review
Authors: Litwińczuk Zygmunt , Król Jolanta , Brodziak Aneta 
Published: June 2015

Abstract
The aim of the paper was to discuss the factors determining the susceptibility of cows to mastitis, the most important for breeders, including losses incurred by milk producers due to the disease. Inflammations of mammary gland are common and the most awkward problem which dairy farmers face around the world. In the case of clinical udder inflammation, it is estimated that the cost of mastitis is about 200 € per cow with fluctuations from 100 even up to 1000 €. Resistance, i.e. the susceptibility of cows to mastitis, is conditioned genetically. The possibility of BoLA and lactoferrin gene polymorphism, using in the selection cows resistant to mastitis, is indicated. Bacteria inhabiting the mammary gland, and the living environment of animals are primarily the main etiological factor. Moreover, many authors indicate the differences between breeds of cows in resistance to mastitis. High-productive breeds are generally more susceptible to the udder inflammation, in comparison to the local breeds. The greatest reduction in milk yield is observed in the case of these breeds, and especially in Holstein-Friesian breed, in which the decline of daily yield at somatic cell count (SCC) amounting above 500,000 per ml of milk can reach 25%. The probability of mastitis occurrence increases with an age of cows and following lactation, and dry period is a time of increased risk. Higher incidence of inflammation is also associated with abnormalities in the construction of the udder (unevenly developed quarters, too long or too short teats). In recent years, a possible relationship between feeding system of cows with their resistance to udder infections has been reported. It is emphasized that a deficiency of selenium and vitamins A and E in the ration may contribute to the increase in the number of mastitis incidences. There are, however, unclear opinions of various authors on the effect of automatic milking system on udder health.
Effect of Feed Restriction on Performance, Carcass Composition and Physicochemical Properties of the M. Pectoralis Superficialis of Broiler Chickens
Authors: Połtowicz Katarzyna , Nowak Joanna , Wojtysiak Dorota 
Published: June 2015

Abstract
The aim of this study was to evaluate the effect of feed restriction on carcass composition, breast meat quality and microstructure of the m. pectoralis superficialis of broiler chickens. A total of 315 day-old female broilers (Ross 308) were randomly assigned to 3 groups of 105 birds each in 3 pen replicates. They were fed ad libitum as the control (I), and restricted for 6 h/day (from 08:00 to 14:00 h) as group II (3 and 4 weeks of age) and group III from 4 to 5 weeks of age. On day 42 of growth, 6 broilers with average body weight were chosen from each group for slaughter to analyse dressing percentage, carcass quality, physicochemical properties of breast muscles, including pH, colour (CIE L*a*b*), expressible juice, drip loss, thawing loss, cooking loss, Warner-Bratzler shear force, texture (TPA) and chemical composition, as well as histochemical profile of the m. pectoralis superficialis. Temporary feed restriction did not significantly alter the final body weight, dressing percentage and the proportion of breast and leg muscles, but increased the proportion of abdominal fat. No differences were found in the microstructure of the m. pectoralis
superficialis of restricted and ad libitum fed chickens. Restricted feeding had an effect on water holding capacity and tenderness of breast muscles, and a non-significant effect on texture parameters and chemical composition. Restricted feeding of chickens changed their meat quality to a greater extent when applied from 3 to 4 weeks compared to analogous procedures introduced from 4 to 5 weeks of age.
Evaluation of the Usefulness of Hybrid Rye in Feeding Polish Holstein-Friesian Dairy Cows in Early Lactation
Authors: Pieszka Marek , Kamyczek Marian , Rudzki Bartosz , Pieszka Magdalena 
Published: June 2015

Abstract
The aim of the study was to compare the effect of feeding a hybrid rye grain in rations for dairy cows during the first 100 days of lactation on body condition, milk yield and milk composition. Feeding cows with concentrates containing in its composition 25% or 40% of the ground hybrid rye did not decrease the intake of concentrate or PMR rations as compared to the control group. The introduction of 25% or 40% of the rye hybrid variety Visello to the concentrates did not reduce the milk yield of the cows during the first 100 days of lactation. No significant differences in the chemical composition of the milk were observed. The cows fed rye maintained their weight and body condition during the first 100 days of lactation at the same level. The addition of hybrid rye grains in the amount of 25% to concentrate had no significant effect on the fatty acid profile of the milk whereas 40% of rye improved fatty acids composition by decreasing C18:0 and increasing C18:1 n-9 in the milk.
Effects of Two Enzyme Feed Additives on Digestion and Milk Production in Lactating Egyptian Buffaloes
Authors: Morsy Tarek A. , Kholif Ahmed E. , Kholif Sobhy M. , Kholif Abdelkader M. , Sun Xuezhao , Salem Abdelfattah Z. M. 
Published: June 2015

Abstract
The aim of this study was to evaluate the effect of two commercial enzyme products on milk production in Egyptian buffaloes. Twenty-one lactating buffaloes (570±15 kg BW) were divided into three groups (n=7) in a randomized block design for four months. Buffaloes were fed a total mixed ration containing 60% forage [rice straw and berseem hay (Trifolium alexandrinum)] and 40% concentrates with either no enzymes added (Control) or an addition of 40 g of Veta-Zyme Plus® (VET) or 40 g of Tomoko® (TOM ) enzyme product per day for each buffalo. Enzyme addition did not affect feed intake (P>0.05), but increased the digestibility of nutrients (P<0.05) and serum glucose concentration (P=0.011). Furthermore, the addition of VET increased milk (P=0.017) and fat corrected milk (P=0.021) yields, fat content (P=0.045), total unsaturated fatty acid (P=0.045) and total conjugated linoleic acid (P=0.031) contents in milk and decreased the content of total saturated fatty acids (P=0.046), while the addition of TOM increased milk total protein (P=0.023) and true protein (P=0.031) contents. The two enzyme products both resulted in higher concentrations of lysine (P=0.045) and total essential amino acids (P=0.036) in milk. It was concluded that addition of commercial fibrolytic enzyme products (i.e. Veta-Zyme Plus® and Tomoko®) to the diet of early lactating buffaloes enhanced nutrient digestibility and milk production and quality.
The effect of a probiotic preparation containing Bacillus subtilis ATCC PTA-6737 on egg production and physiological parameters of laying hens
Authors: Sobczak Alicja , Kozłowski Krzysztof 
Published: June 2015

Abstract
A total of 288 Lohmann Brown laying hens were randomly divided into two groups (9 replicates of 16 birds each). The hens were housed in three-tier battery cages for 26 weeks, including a two-week pre-laying period. All birds were fed iso-nitrogenous and iso-caloric diets, and had free access to water. Control group (C) hens were fed a basal diet, and experimental group (BS) hens received a basal diet supplemented with a commercial probiotic preparation of Bacillus subtilis ATCC PTA- 6737 at 1×108 CFU/kg feed. The number and weight of eggs laid, feed intake, feed conversion, egg quality, the fatty acid profile and cholesterol content of yolk lipids, and selected blood biochemical parameters of hens were determined throughout the experiment. No significant differences (P>0.05) were noted between the groups in average egg weight, laying performance (%), daily feed intake or feed conversion. Eggs laid by BS group hens received significantly higher scores for yolk color (Roche yolk color fan) and albumen quality (Haugh units), and they were characterized by a significant improvement in shell thickness and breaking strength (P<0.05) in comparison with eggs laid by control group hens. No significant differences (P>0.05) were observed between the groups in the fatty acid profile of yolk lipids, except for a significant increase (P<0.05) in oleic acid concentrations in group BS. No significant differences (P>0.05) were noted between the groups in selected blood biochemical parameters of laying hens. Group BS eggs had a significantly lower (P<0.05) cholesterol content of yolk lipids. It can be concluded that a probiotic preparation containing Bacillus subtilis ATCC PTA-6737 had a beneficial influence on selected performance parameters of laying hens, egg quality and the cholesterol content of yolk lipids.
Molecular characterization of Setaria digitata from Mithun (Bos frontalis)
Authors: Chamuah Jayanta Kumar , Sakhrie Aseno , Lama Sanjeevini , Chandra Subhas , Chigure Gajanan M. , Bauri Ram Krishna , Jacob Siju S. 
Published: June 2015

AbstractMithun is a strongly built hill animal of Southeast Asia and plays an important role in the socio-economic and cultural life of the tribal population. Setaria digitata isolated from peritoneal cavity of mithun both from Arunachal Pradesh and Nagaland were characterized based on conserved region of 12SrDNA, 28SrDNA and ITS-2 and mitochondrial gene CoxI. Based on sequence analysis, it was found to be 99% similarity with Srilankan isolate of S. digitata.