bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effects of Insulin and Strontium Ranelate on Guided Bone Regeneration in Diabetic Rats
Authors: Nemtoi Alexandru , Danila Vlad , Dragan Eliza , Pasca Sorin , Nemtoi Ana , Constantin Mihai , Sava Anca , Haba Danisia
Published: February 2020

The aim of this study was to investigate the effect of insulin and strontium ranelate treatment on guided bone regeneration in diabetic rats. This study was carried out on 30 adult Wistar rats with an average weight of 250-300 grams. The animals underwent a unilateral osteotomy of the left proximal tibia followed by bone augmentation with collagenized porcine bone xenografts (Osteobiol� mp3, Tecnoss Dental s.r.l., Torino, Italy) and then were randomized into five groups: healthy (H), diabetes (D), diabetes with insuline (DI), diabetes with strontium ranelate (DS) and diabetes with insuline and strontium ranelate (DIS). Histomorphometric analysis was performed at the end of this study.
The Influence of the Temperature and Ageing Time on the NiCr23Co12Mo Alloy Microstructure
Authors: Sroka Marek , Nabialek Marcin , Szota Michal , Zielinski Adam
Published: February 2020

The NiCr23Co12Mo alloy (Inconel 617) is a material used for example in the production of superheater boilers with ultra-cool supercritical parameters of work. The paper presents the results of microstructure changes after the long-term impact of temperature and strain. Analysis of the microstructure was carried out using scanning electron microscopy. Qualitative and quantitative identification of precipitations were conducted using X-ray analysis of the phase composition. Was studied the influence of ageing on tested alloy precipitations. The results of the study are the database alloy material of the new generation, which is used in the activities of the diagnostic elements of pressure parts of boilers.
Considerations on Ambient Levels of Ozone Concentrations and Relationship with NOx in an Urban Environment
Authors: Ianache Cornel , Predescu Laurentiu , Predescu Mirela , Dumitru Dumitru
Published: February 2020

The serious air pollution problem has determined public concerns, worldwide. One of the main challenges for countries all over the world is caused by the elevated levels of ground-level ozone (O3) concentrations and its anthropogenic precursors. Ploiesti city, as one of the major urban area of Romania, is facing the same situation. This research aims to investigate spatial and temporal distribution characteristics of O3 in relationship with nitrogen oxides (NOx) using statistical analysis methods. Hourly O3 and NOx measurements were collected during 2014 year in Ploiesti. The results obtained showed that the ozone spatial distribution was non-normal for each month in 2014. The diurnal cycle of ground-level ozone concentrations showed a mid-day peak, while NOx diurnal variations presented 2 daily peaks, one in the morning (7:00 a.m.) and one in the afternoon (between 5:00 and 7:00 p.m.). In addition, it was observed a distinct pattern of weekly variations for O3 and NOx. Like in many other urban areas, the results indicated the presence of the �ozone weekend effect� in Ploiesti during the 2014 year, ozone concentrations being slightly higher on weekends compared to weekdays. For the same monitoring site, the nitrogen oxides were less prevalent on Saturdays and Sundays, probably due to reducing of road traffic and other pollution-generating activities on weekends than during the week.
Evaluating the Air Pollution Impact Using Environmental Monitoring, Dispersion Modeling and Volunteered Geographic Information Systems
Authors: Dunea Daniel , Iordache Stefania , Bohler Trond , Huber Florian , Leitner Peter
Published: February 2020

The paper describes the application of real-time environmental monitoring, local and long-range transport dispersion modeling and Volunteered Geographic Information (VGI) systems that can improve the fast knowledge regarding the air pollution status to determine the actual outdoor conditions for living in a specific urban area. A case study using such techniques is presented for a pollution event with fine particulate matter (PM2.5) in Targoviste, Romania. PM2.5 time series were recorded during the pollution event by two optical monitoring systems providing an average of 184.1, maximum of 323, and minimum of 107 �g m-3 (DustTrackTM 8533 EP system), and 177.4, 321 and 93 �g m-3 (Rokidair microstation), respectively. PM2.5 concentrations and forward trajectories were computed using two programs: BREEZE� AERMOD 7.9 and HYSPLIT dispersion model. The obtained results emphasize the usefulness of embedding dispersion modeling advanced tools to supplement monitoring results and to characterize the source apportionment.
Air Pollutants and Meteorological Parameters Influence on PM2.5 Forecasting and Performance Assessment of the Developed Artificial Intelligence-Based Forecasting Model
Authors: Popescu Marian , Mihalache Sanda Florentina , Oprea Mihaela
Published: February 2020

Particulate matter with an aerodynamic diameter lower than 2.5 �m (PM2.5) is one of the most important air pollutants. Current regulations impose measuring and limiting its concentrations. Thus, it is necessary to develop forecasting models programs that can inform the population about possible pollution episodes. This paper emphasizes the correlations between PM2.5 and other pollutants, and meteorological parameters. From these, nitrogen dioxide and temperature showed have the best correlations with PM2.5 and have been selected as inputs for the proposed forecasting model besides four PM2.5 concentrations (the values from current hour to three hours ago), the output of the model being the prediction of the next hour PM2.5 concentration. Two methods from artificial intelligence were used to build the forecasting model, namely adaptive neuro-fuzzy inference system (ANFIS) and artificial neural networks (ANN). The comparative study between these methods showed that the model which uses ANN have better results in terms of statistical indicators and computational effort.
Considerations Regarding Rheological Behavior of Some Crude Oils
Authors: Stoicescu Maria , Stoianovici Doru , Onutu Ion , Stoianovici Georgeta
Published: February 2020

The paper presents the experimental research results which the Romanian crude oils type B were subjected to. Tests conducted in laboratory environment aimed determination of crude oils rheological parameters and also identification of rheological behaviour models. Experiments, conducted at different temperatures, led to rheological behaviour models characteristic of non-Newtonian fluids. The established rheological relations help to better understanding of tested fluids so we can know either their behaviour or how we could impose their behaviour according to our needs.
Prostatic Specific Antigen Less then 10 ng/mL in the Diagnostic and Surveillance of Prostate Cancer
Authors: Grigore Nicolae , Pirvut Valentin , Mihai Ionela , Hasegan Adrian , Cernusca Mitariu Sebastian Ioan
Published: February 2020

Prostate cancer (PCa) is the most commonly diagnosed male malignancy after 60 years old. Today, the problem is to distinguish between low-risk and agrressive cancers, especially in patients with Prostatic Specific Antigen (PSA) less than 10 ng/ml The use of PSA as a biomarkers for diagnosis and prognosis of prostate cancer has the potential to improve the clinical management of the patients. PSA levels. together with clinical examination, prostate ultrasound and histopatological examination are esential for the diagnostic of PCa, risk assessment and therapeutic decisions. The aim of our study is to evaluate the patients with PSA values less then 10 ng/mL and to determine the correct indications for tratment depending on the risk scale of the disease. The inclusion criteria for the patients are described in the paper. For improving the early diagnosis of PCa in patients with PSA below 10 ng/mL we developed an algoritm based on current opportunities.
Circulating Chemerin, Oxidative Stress, Inflammation and Insulin Resistance in Morbid Obesity
Authors: Aursulesei Viviana , Bulughiana Siminela , Stoica Bogdan Alexandru , Anisie Ecaterina
Published: February 2020

Chemerin is a relatively novel adipokine with controversial pathophysiological role in obesity. Our study aimed to investigate the relationship of serum chemerin level with inflammation, oxidative stress and insulin resistance in morbidly obese subjects. Circulating chemerin was an independent predictor of TNF-Q level, superoxide dismutase activity and lipid peroxidation, but no relation with insulin resistance could be sustained. Taken together chemerin could be a marker of dysfunctional adipose tissue, but its serum level does not reflect properly the metabolic phenotype in morbid obesity.
Acute Carbamate Insecticide Intoxication in Forensic Medicine
Authors: David Sofia Mihaela , Bulgaru Iliescu Diana , Sandu Ion , Paraschiv Daniela Elena , Teodorescu Carleta , Knieling Anton
Published: February 2020

Carbamates are potent cholinesterase inhibitors derived from carbamic acid but compared to organophosphates their action is reversible thus making them less dangerous. Carbamates are frequently used as insecticides the most known in Romania being carbofuran (Furadan) secondary to a famous singer�s suicide using this substance. In the current paper the authors analyse the severity, mechanism of action and therapeutic methods used in carbamate insecticide intoxication based on one case of accidental poisoning secondary to contaminated beer ingestion. To our opinion, carbamates exhibit a different toxicity than the organophosphates, with a more brutal, life-threatening behaviour than previously considered.
Predictive Value of the AMH Level and Serum Estradiol for Ovarian Hyperstimulation Syndrome in the Assisted Human Reproduction
Authors: Pacu Irina , Ionescu Cringu , Vladareanu Simona , Banacu Mihai , Neacsu Adrian , Calin Alina
Published: February 2020

The ovarian hyperstimulation syndrome (OHSS) is one of the major complications which occurs as a result of controlled ovarian stimulation (COS) in the assisted human reproduction. There are several factors including age, body mass index (BMI), plasma estradiol level, the anti-mullerian hormone (AMH) level and the antral follicle count (AFC), which can be used to identify the cases with high risk for this complication. The purpose of the study is to establish the predictive value of AMH for the development of OHSS before COS as well as its association with the plasma estradiol level during stimulation. The study group included 155 COS cycles using gonadotropin-releasing hormone (GnRH) agonist protocols, and analyzed the predictive value of the mentioned parameters for OHSS. The serum AMH level is superior to age and BMI for identification of patients with high risk for OHSS before starting the ovulation stimulation, and the cut-off level is 3.78ng/mL with 91.1% sensibility and 85.2% specificity.
Generation of Iron Nano-microparticles for Bio-medical Applications Using Plasma Processes
Authors: Bunoiu Madalin , Anitas Eugen Mircea , Neamtu Johny , Bics Ioan , Chirigiu Liviu , Chirigiu Larisa Marina Elizabeth
Published: February 2020

In the last years, experimental diagnosis and therapy for cancer patients is performed using nano-micro technologies, and in particular iron nano-microparticles since their ad/absorbance properties, are useful in transporting and maintaining drugs in tumor regions. In this paper, a plasma generation process is used for spraying solid metal (carbon steel wire or rod). By modifying the electric current intensity, material�s displacement speed in plasma and the debit of technical argon, iron nano-microparticles are obtained in the form of filled and/or porous microspheres, nano-microtubes and microparticles. They consist of a central core from which tentacles in the form of microtubes emerge. We show the manufacturing process and the formation mechanisms of these particles by using argon plasma. We present and discuss the obtained results.
Beta-lactam Resistance Mechanisms in Pathogens Isolated from Patients Admitted to Intensive Care Unit
Authors: Axente Carmen , Muntean Delia , Baditoiu Luminita , Moldovan Roxana , Hogea Elena , Horhat Florin , Bedreag Ovidiu , Sandesc Dorel , Dugaesescu Dorina , Voicu Mirela , Dumitrascu Victor , Licker Monica
Published: February 2020

Intensive care units (ICUs) are often referred to as the epicentre of infection diseases in a hospital. Many studies highlighted the importance of using local antimicrobial resistance data, to guide empirical antibiotic therapy. As a consequence, the present study is particularly important, especially in the current context, when we are witnessing an ascending trend of antimicrobial resistance. Beta-lactams are the most frequently used class of antibiotics for treating patients infected with various germs. The aim of this study is to analyse the modalities by which microorganisms become resistant to antibiotics of this class, in an intensive care unit of a Romanian university hospital. During the period between January, the 1st 2012 and December the 31st 2013, a prospective study was conducted in the largest ICU from the Western part of Romania. Various resistance mechanisms to beta-lactam antibiotics were detected. Among these, there is great concern regarding the high number of extended-spectrum beta-lactamase producing microorganisms, as in most cases they determine the use of carbapenems, thus increasing the risk of occurrence and dissemination of carbapenemase-producing bacteria.
Assesment of Synovial Fluid pH in Osteoarthritis of the HIP and Knee
Authors: Roman Mihai Dan , Fleaca Radu Sorin , Boicean Adrian , Bratu Dan , Birlutiu Victoria , Rus Luca Liviu , Tantar Cristian , Cernusca Mitariu Sebastian Ioan
Published: February 2020

Osteoarthritis (OA) is a developing process with a multifactorial causality in which changes of the synovial fluid characteristics occur. Hypothesis: synovial fluid pH in severe OA is correlated with other patient parameters. Synovial fluid pH from 50 patients with severe OA (knee/hip) was determined. The results were assessed and correlations with the patients antropologic data and biological markers were analyzed. 50 patients (26 knee OA and 24 hip OA) were analyzed. The average synovial fluid pH was 7.35 indicating slightly lower levels than in normal joints. Higher pH values were observed in males, under 60 years, secondary OA, Rh+ and Hbg under 13.5g/dL. Lower pH values were obtained in females, age under 60 years, primary OA, Rh-, Hbg over 13.5g/dL, hypertensive and diabetic patients. The synovial fluid pH may not be an appropriate biomarker for severe OA disease. Some patient variables might be correlated with synovial blood pH.
Solubility Behaviour of Cellulose Acetate Butyrate in Mixture of Solvents
Authors: Grigoras Anca Giorgiana , Olaru Niculae
Published: February 2020

In order to identify the proper solvent mixture for future processing from solution of cellulose derivatives, the laser light scattering method was used. The multiangle laser light scattering parameters of macromolecular chains in solution (weight-average molecular weigh , radius of gyration Rg and second virial coefficient A2) were correlated with the values of dielectric constant of solvent mixture (2-methoxyethanol + N,N-dimethylformamide). The experimental results revealed that the protic solvent favored the extended conformation of the macromolecules in solution, necessary condition to obtaine nanofibers by electrospinning.
Study on Changes in Some Physiological Parameters Under the Action of Therapeutic Ultrasound
Authors: Silisteanu Sinziana Calina , Antonescu Elisabeta , Szakacs Julianna , Totan Maria , Roman Filip Corina , Serb Bogdan Horatiu , Cernusca Mitariu Mihaela , Grigore Nicolae , Cernusca Mitariu Sebastian Ioan
Published: February 2020

Low back pain (LBP) is a disease with a high socio-economic and medical impact. Recovery treatment is complex and includes medication (NSAIDs, analgesics, muscle relaxants), physiotherapy and kinesiology. Ultrasound is one of the electrotherapy procedures applied due to its analgesic effects, muscle relaxing properties and massage. The study assesses the evolution of temperature and the number of red blood cells after the application of ultrasound of different intensities and ways. The results are statistically significant for some parameters. Limitations of the study are determined by the relatively small number of study patients, but the results could form the basis of further research.
Study of the Plasmatic Oxidative Stress Markers in Temporomandibular Joint Disorders
Authors: Chisnoiu Andrea Maria , Pallag Annamaria , Bodog Florian Dorel , Juncar Raluca Iulia , Chisnoiu Radu Marcel , Sirbu Vasile , Honiges Ana , Juncar Mihai
Published: February 2020

Oxidative stress is considered to have an important role in the pathogenesis of many inflammatory diseases. This investigation sought to determine whether the appliance of etiologic factors for temporomandibular joint disorder is associated with modified values of oxidative stress as measured by biomarkers in plasma. A case-control study design was used to compare oxidative stress biomarkers (malondialdehyde and glutathione) in plasma from Wistar rats with different etiologic factors (biomechanical stress, estrogen hormones and emotional stress), compared to non-temporomandibular joint controls. Etiologic factors were applied in five groups (n=10) of mature female Wistar rats, individually (biomechanical stress, estrogen hormones and emotional stress) in three groups or in combination for two groups (biomechanical stress-emotional stress and biomechanical stress-emotional stress). No factor applied for the control group. Blood samples were taken after 30 and 60 days of experiment. Malondialdehyde and glutathione levels in plasma were evaluated. The most important modifications in malondialdehyde levels were recorded for the fifth group (biomechanical stress-emotional stress) where values increased significantly from 30 to 60 days plasma analysis (p = 0.003). No statistical differences were recorded in glutathione plasmatic levels between control and experimental groups at 30 days analysis. At 60 days, glutathione plasmatic evaluation recorded higher values than control for all experimental groups. Our findings in this rat experimental model, clearly indicate that biomechanical stress, estrogen hormones and emotional stress, have an impact on oxidative stress development and consequently on the functionality of the temporomandibular joint in rats. Moreover combined actions of these factors, increase the oxidative stress phenomena on temporomandibular joint in rats.
Dental Development in Children After Chemotherapy
Authors: Bica Cristina , Chincesan Mihaela , Esian Daniela , Martha Krisztina , Ion Valentin , Marinescu Larisa Andreea , Earar Kamel , Matei Madalina Nicoleta
Published: February 2020

Chemotherapy, as a treatment method in paediatric oncology, coincides with the physiological process of tooth development. The interference between cytostatic agents and the cycle of the cells with specialised functions in the formation and mineralisation of dental structures leads to the appearance of abnormalities in the development of the tooth buds, structural defects and disorderly eruption. We have looked into the distribution of developmental tooth disorders in a group of children suffering from malignant ailments. The study reveals a high occurrence of microdontia and agenesis of premolars among children diagnosed with high-risk acute lymphoblastic leukemia at the age between 1 and 6, as well as tooth eruption disturbances in 70% of the children. The nature and the severity of dental abnormalities depend on the type of cytostatic medication, the dosage and the frequency of therapeutic cycles, the age of the child at the beginning of the oncological therapy, as well as on the stage of the odontogenesis.
The Influence of Physical Activity on Serum Phosphate Levels in a Group of Hemodialysis Patients
Authors: Balcangiu Stroescu Andra Elena , Peride Ileana , Constantin Alexandra Maria , David Cristiana , Sinescu Ruxandra Diana , Niculae Andrei
Published: February 2020

The prevalence of mineral bone disorders in chronic kidney disease (MBD-CKD) and the cardiovascular risk are increased in hemodialysis (HD) patients. Hyperphosphatemia is one of the complications often associated with increased cardiovascular risk, and in CKD patients, the reduced renal excretion of phosphate is an important cause of elevated serum of this microelement. Physical activity represents another contributing factor in evaluating the risk of cardiovascular disease. The aim of our study was to determine the influence of physical activity on serum phosphate levels in HD patients. The inclusion criteria of this 3-months study were: age ] 18 years old, dialysis vintage ] 6-months, diuresis ] 500 mL/day, PTH values between 100-500 pg/mL, similar dialysis protocol, phosphate daily intake and MBD-CKD therapy. The following parameters were monitored: dry weight, diuresis, associated comorbidities, hemoglobin, serum calcium, phosphate, sodium, potassium, serum albumin, intact parathormon, bicarbonate. The physical activity was assessed during 4 days (3 week-days and 1 during the week-end) for 3 months, and the patients had to complete a questionnaire, too. 49 patients were included and divided in 5 groups, depending on their physical activity. Analyzing the parameters influence on serum phosphate levels, we observed that physical activity, serum calcium and albumin were the only parameters statistically significant (p = 0.001, p = 0.033, and p = 0.47, respectively). The nutritional recommendations of chronic HD patients should be adapted to their individual level of physical activity, in order to avoid an abnormal increase of serum phosphate level, and to improve to over-all outcome.
Biochemical Markers with Low-grade Inflammation as Predictors of Thrombotic Events in Antiphospholipid Syndrome
Authors: Gavris Claudia , Poroch Vladimir , Simion Laurentiu , Baracan Adrian , Toader Elena , Pascu Alina Mihaela
Published: February 2020

The study aimed to test the inflammation hypothesis in antiphospholipid syndrome (APS) by assessing biochemical markers of inflammation and platelet activation. Forty one patients with APS were compared to 40 controls. High-sensitivity C-reactive protein (hs-CRP) (as inflammatory biomarker), P-selectin and soluble CD40L (sCD40L) (as platelet activation markers) were measured by ELISA at enrolment and after 12 months follow-up. Serum hs-CRP, P-selectin and sCD40L levels were significantly higher in patients with APS compared to controls. P-selectin was significantly higher in APS patients with recurrent or acute thrombosis compared to APS patients with no recurrent thrombotic events. Serum hs-CRP and anticardiolipin antibodies (aCL) and were independent predictors of thrombosis in APS. In conclusion, persistent increased hs-CRP titres demonstrated low-grade inflammation in APS. Serum biomarkers as aCL and hs-CRP were independent thrombotic cumulative risk predictors in patients with APS.
Negative Pressure Therapy in the Surgical Treatment of Diabetic Foot
Authors: Ciuntu Bogdan Mihnea , Vasiluta Ciprian , Negru Robert , Hultoana Roxana , Ciuntu Roxana , Georgescu Stefan Octavian , Sirbu Paul Dan , Azoicai Doina
Published: February 2020

The study aims to assess the significance of negative pressure therapy in the treatment of diabetic foot.The objectives intend to evaluate the healing time required after applying the method and the functional consequences for the patient. A prospective study was conducted on a sample of 37 patients with diabetic foot were monitored their clinical course between September 2014 - April 2017, following negative pressure therapy. There were used vacuum assisted closure devices (VAC � -Hartman) in order to apply negative pressure to the wound, while complying with specified settings (negative pressure, time of use of a kit) in accordance with patients� outcome.There were monitored changes in wound size (planimetric and volumetric measurement), their bacterial load and duration of treatment. Healing was obtained in all cases, to an average hospital stay of 27.3 days and 8 days of therapy application.The negative result of microbial cultures was obtained after an average of 6.45 days by simultaneous application of negative pressure and antibiotic treatment according to the antibiogram. Skin grafts were necessary to close the defect in 4 cases. After basic treatment of the wound, auxiliary methods such as negative pressure contribute to the healing.In patients with diabetic foot who were required surgical intervention, the use of negative pressure therapy yielded a significant benefit in the preservation of the affected limb, after minimal excision.The results we obtained throughout our experience recommend use of NPTW technique as indication for abdominal wall surgery in closing abdominal wall defects, compartment syndrome and surgical site infection after prosthetic mesh.
New Extraction Technologies for Syringa Vulgaris (Oleaceae) Meristematic Extracts
Authors: Toma Claudia Crina , Casacchia Teresa , Don Ioan , D`ippolito Claudia , Statti Giancarlo
Published: February 2020

The use of meristematic tissues for the production of health-related extracts (meristemotherapy) is coded by the european pharmacopoeia. However, traditional macerated glycerol requires long production times, based on classical extraction by diffusion. The use of a Dynamic Extraction Accelerator (Naviglio� Extractor) allowed for extraction in significantly faster (6 h) times compared to the conventional ones for the preparation of a macerated glycerol (21 days). The quantitative results of extracting Syringa vulgaris meristematic tissues were measured in terms of the amount of total extracted polyphenols and total extracted flavonoids. The biological activity related to the inhibition of the pancreatic lipase enzyme was compared and, as expected, looking phytochemical composition, the extract IC50 in Naviglio� Extractor was significantly lower than that of macerated glycerol.
Highlighting a Cotton Grafting Process Using the Spectral Subtraction Method and Statistical Analysis
Authors: Popescu Vasilica , Popescu Gabriel , Sandu Irina Crina Anca
Published: February 2020

Spectral subtraction method was used to prove the grafting onto cotton fabrics of some derivatives of glyoxal with monochlorotriazinyl-b-cyclodextrin (MCT-b-CD). Glyoxal was initially brought in contact with HCl. The formed compound was brought in contact with MCT-b-CD, in presence of NaOH as catalyst. The resulted product was applied on cotton samples using the pad-dry-cure technology. The presence of MCT-b-CD on the final samples was confirmed by a spectroscopic analysis (spectral subtraction method) and the phenolphthalein test. Spectral subtraction method notifies any change between two (or more) FT-IR spectra. This method is very useful when the analyzed spectra are very similar and the classic FT-IR analysis fails to clearly highlight what is different between those 2 spectra, because the overlays are illegible. The grafting effects were confirmed by the increases of take-up degrees and wrinkle recovery angles (WRA). The WRA results were statistic analyzed with the standard deviation SD, the standard error of the mean (SEM) and the coefficient of variation (CV). The taking-up degrees considerably increased as compared to the reference samples, and the WRA values depend on the length and the flexibility of the product grafted on cotton.
The Effect of Active Principles of Lyophilized Garlic and Chlorella on Reduction of Tissue Bioaccumulation and Lead Antagonism to Zinc in Carassius gibelio
Authors: Nicula Marioara , Pacala Nicolae , Radulov Isidora , Ahmadi Mirela , Dronca Dorel , Gherbon Adriana
Published: February 2020

In living organisms lead is classified as potential toxic metal, and in high concentration can produce intoxication with the alteration of some vital organs, especially liver and kidney. In aquatic environment lead can be absorbed by fishes and other organisms, with different distribution in various tissues. Our aim of experiment was to verify and demonstrate the protective effect of lyophilized garlic and chlorella against bioaccumulation of lead in fishes living in aquatic environment deliberated polluted with lead. Thus, lyophilized garlic and chlorella administrated as supplements in fodder for fishes (Carassius gibelio) diminished the antagonistic effect of lead against zinc in all tested tissues: liver, kidney, heart, brain, ovary, testis, muscles myotome � epaxial, skin � with scales, gills, and intestine.
Study of Cotton Grafting with Hemiacetal - MCT-b-CD Derivative Using Fourier Transform Infrared Spectroscopy and Statistical Analysis
Authors: Popescu Vasilica , Sandu Irina Crina Anca , Popescu Gabriel
Published: February 2020

The dihydrated forms of the 40% glyoxal solution undergo a dehydration process (in the presence of HCl), when the proportion of non-hydrated glyoxal increases. In the presence of a dilute ethanol solution, the non-hydrated glyoxal generates a hemiacetal. The presence of hemiacetal is confirmed by FT-IR analysis by increasing of the peaks at 1053 cm-1, 1107 cm-1 and by decreasing of the peak at 1746 cm-1. The grafting of cotton with the final grafting agent obtained from the interaction of hemiacetal with MCT-b-CD, was possible using pad-dry-cure technology. The presence of MCT-b-CD on cotton fabric was confirmed by FT-IR analysis (by the peaks of 1535 cm-1 and 787 cm-1) and by the yellowing of the sample. Confirmation of the grafting is given both by increasing the pickup / take-up degrees and by increasing the wrinkle recovery angles (WRA). The statistical analysis of these indices indicates low values for standard deviation (SD), standard error of the mean (SEM) and the coefficient of variation (CV).
Use of Polyhexanidine in Treating Chronic Wounds
Authors: Raducu Laura , Balcangiu Stroescu Andra Elena , Stanescu Iulia Ioana , Tanasescu Maria Daniela , Cozma Cristina Nicoleta , Jecan Cristian Radu , Badita Daniela Gabriela
Published: February 2020

Chronic wounds have a long period of healing, being impeded by numerous factors, as infections. Polyhexanidine is a new broad spectrum antiseptic with non-toxic action which is used lately in wound cleaning solutions. A case control study was realized with two groups of patients treated with silver sulfodiazine and with polyhexanidine, the last group having an accelerated healing evolution. Besides the bactericide action, polyhexanidine has also no cytotoxicity, good tolerability and anti-inflammatory proprieties.
The Effect of Innovation on Increasing Business Performance of Smes in Indonesia
Authors: Herlinawati Erna , Machmud Amir
Published: February 2020

The purpose of this study is to analyze the effect of innovation on SME business performance, which is motivated by the important role of SMEs in national economic growth should be accompanied by a significant increase in business performance. But in reality SME competitiveness is still low in the global market due to low innovation. This study uses an explanatory quantitative survey method. There are 231,181 SMEs in the manufacturing industry sector in West Java, Indonesia as a population with a sample of 346 respondents. Data collection uses a Likert scale 1-5 questionnaire. Data analysis using SEM. The analysis shows that innovation has a positive and significant effect on business performance. The implication of this research is that the performance of SME businesses can be improved through increased product innovation, process innovation, and distribution innovation.
Study–test congruence of response levels in item stimulus–response priming
Authors: Gomes Carlos A. , Mayes Andrew
Published: February 2020

We investigated stimulus–response (S–R) memory links during object priming using a binary associative size judgement paradigm. At study, participants decided which of two objects was bigger in real life and, at test, made the same or the reverse judgement. We examined the effects of response congruence on item S–R priming in the associative paradigm. In Experiment 1, a task reversal manipulation had minimal impact on RT priming when classifications were congruent for both recombined objects between study and test. Experiment 2 found that RT priming was more disrupted by classification incongruence of the selected than of the nonselected item alone, with incongruence of the nonselected object having no effect on RTs. Experiment 3, however, found that classification incongruence of both items eliminated RT priming, indicating that a significant effect of classification incongruence for the nonselected item is only evident if both items are classification-incongruent. Finally, across all experiments, we found that accuracy was more sensitive than RTs to decision/action incongruence. We interpret these findings in light of a two-stream account of S–R priming, and suggest a few extensions to account for interactions between S–R links of recombined items.
El estudio arqueológico del proceso de intensificación. Casos de Europa y América del Sur.
Authors: Medina Matías E , Prates Luciano
Published: February 2020

La capacidad de los seres humanos para generar cambios significativos en sus relaciones con el ambiente en cortos períodos de tiempo es un atributo que les es propio (Odling-Smee et al. 2003). En buena medida, los principales puntos de inflexión en la historia de la especie han estado asociados con el reordenamiento de las variables de esa interacción. Por este motivo, los momentos precisos en que estos cambios se produjeron han sido y seguirán siendo particularmente atractivos para las ciencias humanas porque encierran algunas de las claves para entender los procesos de cambio cultural. No es casual que buena parte de los debates más intensos y persistentes en la arqueología, y en la antropología en general, se hayan producido alrededor de la búsqueda de los factores desencadenantes del reordenamiento de las relaciones entre las sociedades y su ambiente.
El proceso de intensificación en la transición pampeano-patagónica oriental. Discusión y perspectivas comparativas con regiones aledañas.
Authors: Stoessel Luciana , Martínez Gustavo
Published: February 2020

El concepto de intensificación ha sido usado y explorado en diversas regiones de Argentina (e.g., NOA, COA, NE, Pampa, Fuego-Patagonia, etc.) desde hace aproximadamente 15 años. En este trabajo se resume cómo ha sido concebido y aplicado el concepto en la disciplina de acuerdo a diferentes enfoques teóricos-metodológicos. Se presenta el caso de estudio del curso inferior del río Colorado, en el área de transición pampeano patagónica oriental, en el que este proceso ha sido evaluado. En función de esto, y a pesar de que la aplicación y evaluación del concepto ha sido dispar, se analiza la información sobre el proceso en sectores vecinos, como las subregiones Pampa Húmeda (particularmente las áreas Interserrana y Sur), Pampa Seca y la parte más septentrional del NE Patagónico. Se concluye que el proceso de intensificación y su discusión se mantuvo vigente a través del tiempo en las agendas de investigación. En este sentido, se observa una preocupación por la aplicación de metodologías sensibles para discutir la existencia del proceso y su impacto en las subsistencias areales y/o regionales. Finalmente, el análisis de este proceso no solo se ha centrado en aspectos económicos, sino en la relación entre estos últimos, el ambiente y las condiciones socio-demográficas e históricas de los cazadoresrecolectores del Holoceno tardío.
Procesos de diversificación, intensificación y domesticación a lo largo del Holoceno en las tierras altas del norte de Argentina y Chile: aportes desde la Puna de Salta.
Authors: López Gabriel E. J. , Restifo Federico
Published: February 2020

Este artículo analiza y discute los procesos de intensificación, domesticación y diversificación en el uso de los camélidos ocurridos entre ca 10000 y 3500 años AP en la Puna de Salta, comparando con distintas áreas de las tierras altas del Noroeste argentino y el Norte de Chile. La información arqueofaunística y lítica macroregional disponible se integra para el estudio de estos procesos. Los resultados indican cambios en el Holoceno medio y, fundamentalmente, en el Holoceno medio final. La evidencia faunística registra la presencia de camélidos domesticados y el aumento en la representación de camélidos subadultos, mientras que la tecnología lítica se caracteriza por la presencia de una mayor variedad de puntas de proyectil y la proliferación de formas base de hojas.
Arqueofaunas y procesos de intensificación en el Período Prehispánico Tardío de las Sierras de Córdoba (Argentina): el sitio Arroyo Talainín 2.
Authors: Medina Matías E.
Published: February 2020

En este trabajo se presentan los resultados del estudio zooarqueológico realizado sobre los restos de vertebrados recuperados en las excavaciones del sitio prehispánico tardío Arroyo Talainín 2 (Córdoba, Argentina), un abrigo rocoso cuyo talud e interior presentó más de 21.000 restos faunísticos. El conjunto está dominado por cáscaras de huevo de ñandú (Rheidae), con una representación inusualmente densa que se aleja de los patrones regulares observados en otros sitios de la región. Lama sp. y Cervidae ocupan un lugar secundario, con una mayor representación de los elementos axiales, justamente aquellos que son escasos o ausentes en los sitios interpretados como poblados semisedentarios. También presentan en promedio una mayor proporción de partes de alto rendimiento. Sitios como Arroyo Talainín 2 indican que una porción signiicativa de los recursos explotados durante el Período Prehispánico Tardío –y con frecuencias totalmente distintas- se procesaba, consumía y descartaba recurrentemente en contextos extracomunitarios dispuestos para tal in, en donde interactuaban numerosas personas y/o grupos fortaleciendo lazos sociales. Se concluye que los cambios observados en el registro arqueológico ca. 1100 AP, más allá de la incorporación de cultígenos y la diversiicación de la caza-recolección, también involucraron la intensiicación de las relaciones sociales, visible arqueológicamente a partir de la composición de los conjuntos faunísticos y artefactuales. Por último, se destaca la importancia del Número de Especímenes Identiicados por taxón (NISP) para cuantiicar procesos de intensiicación económica a partir de restos óseos altamente fragmentados.
Amalia 5: rol de los paisajes lagunares en la circulación humana en el interior de la estepa fueguina.
Authors: Oría Jimena , Salemme Mónica , Fernández Marilén
Published: February 2020

Nueva evidencia arqueológica proveniente del interior de la estepa del norte de Tierra del Fuego es considerada desde una perspectiva regional. Un conjunto de piezas líticas recuperadas en la costa de la laguna Amalia se analizó contemplando los patrones distribucionales del registro arqueológico en la localidad y contrastando con la evidencia disponible para el sector costero. El propósito es aportar a la discusión de los modelos planteados sobre el uso del espacio, particularmente en relación a la recurrencia ocupacional en determinados puntos del paisaje.
Los petroglifos del Cerro Blanco de Zonda (San Juan)
Authors: García Alejandro
Published: February 2020

Recientes investigaciones en el Valle de Zonda (centro-sur de San Juan) permitieron descubrir un conjunto de petroglifos en una de las laderas del Cerro Blanco. La mayoría de las representaciones son figurativas (antropomorfos, camélidos, huellas de aves y felinos, serpientes, etc.). Su análisis y comparación indican que al menos una parte corresponden al período Aguada local. Asimismo, se discute la posible relación del sitio con el cercano canal matriz del sistema de riego prehispánico local y su importancia en el marco del proceso de integración regional que involucró al actual territorio de San Juan desde ca. 650 d.C.
Uso antrópico de lagartos (Tupinambis sp.) en el sitio Beltrán Onofre Banegas-Lami Hernández .
Authors: Del Papa Luis M. , Moro Leda
Published: February 2020

En los últimos años se han ampliado los análisis arqueofaunísticos hacia la fauna menor. En este caso se analiza los patrones de uso de los lagartos (Tupinambis sp.) en el sitio arqueológico Beltrán Onofre Banegas-Lami Hernández (Dpto. Robles, Santiago del Estero). Este sitio corresponde a un contexto agroalfarero Tardío (con un fechado de 420 ± 60 años 14C AP) y se ubica en las inmediaciones de un paleocauce del Río Dulce. Se realizó el análisis tafonómico de la muestra observándose marcas de corte y termoalteración; además, la representación de partes de Tupinambis sp. coincide con la incorporación de las presas en forma entera a los lugares de consumo. Los restos de Tupinambis sp. son recurrentes en los sitios arqueológicos de la región para el contexto agroalfarero, y en algunos casos las evidencias de consumo concuerdan con las presentadas en este trabajo. Si bien los reptiles en la muestra no superan el 6% del NISP total, los mismos constituyeron un recurso complementario y de importancia en relación al uso estacional de las presas.Palabras claves: Tupinambis sp., Región arqueológica Chaco-Santiagueña, Agroalfarero tardío; Evidencias antrópicas.
Uso de rocas sedimentarias en el valle de Hualfín prehispánico
Authors: Flores Marina Cecilia
Published: February 2020

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Motivos para dibujar la roca: un primer acercamiento al arte rupestre de La Aguadita (Tapso, Catamarca).
Authors: Bocelli Sebastián
Published: February 2020

En la zona norte de la Sierra de El Alto-Ancasti, en la jurisdicción de Tapso (Dpto. El Alto, Catamarca), se encuentra emplazado en un afloramiento rocoso, el sitio “La Aguadita”. Rodeado por un ambiente caracterizado como Chaco Semiárido, se destaca la convivencia entre árboles de gran porte y arbustos perennes. El trabajo se centra en el relevamiento de la gráfica rupestre del sitio con su respectiva descripción y clasificación de los motivos. La “Arqueología de los Paisajes” permite abordar este estudio a partir de tres escalas de análisis: sitio, panel y motivo. A la luz de los resultados se discute sobre la posible reutilización de este locus rupestre a lo largo del tiempo
Acerca de la cerámica Portezuelo del Valle de Catamarca y la Sierra de Ancasti.
Authors: Nazar Domingo , De la Fuente Guillermo
Published: February 2020

La cerámica Aguada Portezuelo es portadora de características tecnológicas y estilísticas singulares. Investigaciones en sitios Aguada del valle de Catamarca muestran una diversidad de alfarerías asociadas al  estilo Aguada Portezuelo Clásico, tal el caso de los sitios Choya 68 y La Viñita. Si bien su presencia parecía estar acotada a la cabecera y sur del valle, prospecciones realizadas en espacios adyacentes de la Sierra de Ancasti, en sus distintos  niveles altitudinales (cumbre, ladera y piedemonte), permitieron registrar esta alfarería en densidades significativas. Presentamos un trabajo de carácter preliminar orientado a diferenciar conjuntos cerámicos y proponer reconstrucciones que permitan dar cuenta de la diversidad de vasijas implicadas. Esperamos contar con un marco de referencia para afrontar la marcada variabilidad observada y ayudar a discernir entre elecciones tecnoestilísticas locales y otras vinculadas con variantes del estilo Aguada de otras regiones, de importancia para indagar en las relaciones socio-culturales dentro de la “geografía” Aguada.
La vida en Mina Dal (El Alto, Catamarca). Aproximaciones desde la arqueología.
Authors: Meléndez Ana
Published: February 2020

Mina Dal es un emprendimiento minero ubicado en las serranías de El Alto-Ancasti, próximo a la localidad de Guayamba en Catamarca. Durante sus años de funcionamiento, entre los años de 1930 y 1990, se dedicó a la extracción de fluorita, pasando de una extracción a baja escala y más bien artesanal a un proceso de producción del tipo industrial que requirió de la capacitación, fijación y especialización de mano de obra en una comunidad de trabajo campesino, lo cual generó por un lado, la reorganización y transformación de las formas productivas locales, y por otro, dio lugar a un espacio donde se hicieron presentes pequeñas luchas y resistencias en las que las agencias campesinas actuaron para imponerse sobre la transformación de ese espacio productivo. Durante sus años de actividad, Mina Dal fue la principal fuente de trabajo en la zona, captando y reorganizando no sólo la forma de vida de los campesinos locales y sus familias, sino nucleando al interior de sus instalaciones a trabajadores de poblaciones vecinas. En este trabajo desandaremos el emprendimiento minero desde su materialidad para conocer cómo, desde lo cotidiano, las formas de vida campesinas se dieron paso en un espacio de vida y producción industrial.
Explotación de materias primas líticas y ocupación del espacio a lo largo del Holoceno medio y tardío en la costa oeste del golfo San Matías (Río Negro, Argentina).
Authors: Alberti Jimena
Published: February 2020

La costa del golfo San Matías (provincia de Río Negro, Argentina) presenta ocupaciones humanas desde los 6000 hasta los 450 años AP. En particular, los fechados más antiguos de la Costa Oeste del golfo se sitúan en torno a los 3000 años AP. A partir de estos momentos, los grupos cazadores-recolectores que habitaron el área explotaron diversas materias primas líticas para la manufactura de artefactos con distintos fines. En este trabajo se presentan las características de los conjuntos líticos recuperados en el área de estudio, a partir del análisis tecno-morfológico y de las materias primas, y se determina la intensidad de reducción para los diferentes tipos de rocas utilizados. Para establecer si el empleo de las rocas cambió a lo largo del tiempo, se estudió su uso en dos bloques cronológicos definidos para el área. Los resultados indican que en esta porción de la costa rionegrina se utilizó una gran variabilidad de rocas, principalmente de origen local, y que materias primas particulares como la obsidiana fueron transportadas desde fuentes distantes. Las rocas más utilizadas habrían sido la calcedonia, el sílex y las volcanitas ácidas, sumadas al jaspe en el bloque temprano y al chert en el tardío.
Evaluación de los procesos de formación de sitio desde la alfarería: el caso de Laguna de los Gansos (Dpto. Diamante, Entre Ríos)
Authors: Silva Carolina
Published: February 2020

En este trabajo se presenta el estudio de atributos tecnológicos y alteraciones posdepositacionales del material cerámico subsuperficial del sitio Laguna de los Gansos 1 con el objetivo de identificar los agentes y procesos tafonómicos que incidieron en su preservación. Se tuvieron en cuenta las características ambientales del contexto de recuperación como la vegetación, la sedimentología y la geomorfología, así como los efectos de procesos antrópicos modernos como el pisoteo del ganado. Las huellas de alteración relevadas incluyen agrietamiento, abrasión, redondeamiento, adherencias, entre otras. También se registró el tamaño de los tiestos para evaluar el grado de fragmentación. La información resultante sugiere que los principales procesos de alteración que afectaron al material fueron la acción fluvial de baja energía y el pisoteo del ganado. Además, se exploró la simultaneidad de ocurrencia entre algunos atributos tecnológicos, tamaño de los tiestos y huellas de alteración. Finalmente, se plantea la necesidad de profundizar en el análisis de las distintas y complejas interacciones entre las propiedades intrínsecas de la cerámica y los agentes extrínsecos (ambiente y contexto de enterramiento) que condicionan la preservación del material y cuyo conocimiento favorecerá la interpretación y comparación de los conjuntos arqueológicos.