bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Pengaruh Variasi Arus dan Sudut Kampuh dengan Metode Pengelasan GTAW terhadap Sifat Mekanik dan Struktur Mikro Baja ST 41
Authors: Haliq Ridhwan , Raharjo Himawan Tri
Published: February 2020

The objective of research is to determine the effect of welding current on the hardness, tensile strength, and microstructure from GTAW welding with ER70S2. This research used ST 41 low alloy steel material containing C = 0,16 %, Si = 0,23 %, Mn = 0,69 %, S = 0,031 %, P=0,019 %, yield point 40 kg/mm2, tensile strength 52 kg/mm2, dan elongation 32 %. ST 41 steel welding is carried out with current variations of 90 A, 110 A and 130 A with GTAW welding methode. Types of variation of the notch use are ][, V and X. The specimens was subjected to hardness, tensile strength, and metallography. Based on the result of hardness test with the factor elimination method in obtaining the angle ][ notch with current 90 A, V notch with current 90 A, and X notch with current 110 A. Tensile test results of the three materials, the highest tensile strength at the X notch with current 110 A is 416,8 N/mm2. The lowest tensile strength is obtained at welds with ][ notch is 360.73 N/mm2. From result of metallograph that we get if X notch with current 110 A is more stable, than ][ notch with current 90 A and V notch with current 90 A.
HUBUNGAN KUALITAS PELAYANAN KESEHATAN RAWAT JALAN DENGAN TINGKAT KEPUASAN PASIEN PESERTA JAMINAN KESEHATAN NASIONAL DI RSU MUHAMMADIYAH SUMATERA UTARA
Authors: Wildani Hasbina , Badiran Muhammad , Hadi Anto J
Published: February 2020

Pelayanan rumah sakit menyediakan jasa yang dijual kepada pelanggan. Kunjungan pasien rawat jalan di RSU Muhammadiyah Sumatera Utara mengalami kenaikan tetapi tidak membuat mereka serta merta merasa puas dengan rumah sakit. Penelitian ini bertujuan untuk mengetahui hubungan kualitas pelayanan dengan kepuasan pasien rawat jalan peserta JKN di RSU Muhammadiyah Sumatera Utara. Jenis penelitian adalah cross sectional dengan sampel 75 responden dan pengambilan sampel secara accidental sampling. Metode analisis data yang digunakan adalah chi square dan uji regresi logistik. Hasil penelitian menunjukkan bahwa faktor yang berhubungan dengan kepuasan pasien rawat jalan adalah tanglibility (p=0,016), reliability (p=0,021), responsiveness (p=0,001), assurance (p = 0,001), dan empathy (p = 0,001). Kesimpulan diperoleh bahwa adalah ada hubungan tanglibility, reliability, responsiveness, assurance dan empathy dengan kepuasan pasien rawat jalan. Diharapkan bagi rumah sakit untuk mempertahan pelanggan dan menambah jumlah kunjungan yaitu dengan meningkatkan kualitas pelayanan dan melengkapi prasarana yang masih kurang, sehingga kepuasan pasien terpenuhi dan pasien menjadi loyal.
New quantum simulations with ultracold Ytterbium gases
Authors: Livi Lorenzo Francesco
Published: February 2020

In recent years, the unprecedented experimental control of the laws of quantum mechanics has led to the so-called quantum technology revolution, a terminology adopted to refer to the applications in which quantum properties play a prominent role. Also the fundamental physics has benefited from these advancements with the development of quantum simulators, controlled quantum platforms engineered in such a way to emulate the physics of complex systems difficult to investigate with classical approaches. The present work deals with the simulation of some fundamental properties of quantum-Hall systems by means of degenerate fermionic Ytterbium atoms confined in artificial periodic potentials. Extreme regimes, inaccessible to real solid-state system, have been explored, paving the way to the observation of exotic phases of matter.
«Sotto l'ombra della patente del Santo Officio»
Authors: Solera Dennj
Published: February 2020

What was the Roman Inquisition? How did inquisitors operate in the Italian society of the 16th and 17th century? In an attempt to answer these questions, the author analyses the inquisitors’ familia , the Court of Faith's large group of assistants. In the light of rich unpublished records, this research is the first to reconstruct the events around the Holy Office’s “staff”, which consisted of vicars, notaries, lawyers, consultants, policemen, bodyguards and many others. The publication deals with the issues related to these officers, their geographic distribution and the brotherhoods used for their classification. Following this, the analysis shifts to the privileges enjoyed by the members of these “families”, and the often heinous abuses they committed, demonstrating how the Inquisition became an element of social and moral disorder whenever its authority was questioned.
Histaminergic neurotransmission as a gateway for the effects of the fat sensing molecule Oleoylethanolamide
Authors: Costa Alessia
Published: February 2020

The histaminergic system is a pleiotropic system that commands general states of metabolism and consciousness, including learning and memorizing both pleasurable and aversive events. Brain histamine mediates the central effects of a signal molecule produced in the intestine, namely oleoylethanolamide (OEA). OEA is released by the enterocytes in response to high fat intake and reduces eating, by indirectly activating a subpopulation of histaminergic neurons. In her thesis, she explored other potential interactions between these two systems in the pursuit of unexplored neuronal mechanisms that may shed light on the mode of action of psychoactive agents and possibly lead to the development of new drugs.
La conciliación de la vida laboral y familiar en profesionales que valoran la Dependencia
Authors: Prada Belver Fabriciana Ada , García Collado Belén , García García Milagros , Luque Salas Bárbara , Huesca Melón José Manuel , García Pérez Jesús
Published: February 2020

La incorporación de la mujer al trabajo ha provocado uno de los cambios sociales más profundos del pasado siglo generando un nuevo modo de cooperación y compromiso entre mujeres y hombres para el reparto equilibrado de responsabilidades en la vida laboral y familiar. Sin embargo, a pesar de los avances legislativos en España en materia de conciliación de la vida laboral y familiar, aún es necesario contribuir con este sistema de bienestar social en la sociedad actual e investigar si realmente en la práctica existe conciliación laboral y familiar en los diferentes contextos en los que hombres y mujeres participan. En este ámbito, nos interesa explorar cómo los profesionales que valoran la dependencia en la Dirección General de Atención a la Dependencia y al Mayor en la Comunidad de Madrid han sido capaces de conciliar la vida laboral y familiar. Para ello, se han analizado las variables sociodemográficas que inciden en el conflicto trabajo-familia y familia-trabajo. En términos generales, la metodología es de corte descriptivo. Se ha usado un muestreo no probabilístico por conveniencia para acceder a los 100 participantes de este estudio, entre los que se incluyen profesionales en medicina, enfermería, terapia ocupacional y trabajo social. Se ha aplicado la versión española del cuestionario de Interacción Trabajo-Familia Survey Work-Home Interaction-Nijme-gen conocido como SWING.
State analysis and global trends in the cultivation of european olives
Authors: Tsiupka S. Yu.
Published: February 2020

Aim. To analyze the scientific and technical literature, to identify trends and prospects for world production of olives. Discussion. Olive is one of the most cultivated fruit crops in the world. It surpasses the main fruit crops in the area of cultivation: apple, pear, peach and nectarine, apricot and orange, and is second only to coffee. In the period from 1994 to 2017 a significant tendency of increasing this value from 7.66 to 10.8 million hectares was noted. In addition, world fruit production is steadily growing from 11.47 million tons (in 1994) to 20.87 million tons (in 2017). The main producing regions of this crop are Europe (67% of world production), Africa (15.4%), Asia (15.3%). South and North America (2.1%) and Oceania (0.2%) make a minor contribution to the global production of olives. The leading countries-producers of olives are Spain, Italy, Greece, Turkey, Morocco, Tunisia, Syria, Egypt, Portugal and Algeria. The most efficient production of olives was observed in the USA and Egypt (11.97 and 11.45 t / ha, respectively), which is associated with the use of highly productive orchards of the intensive type and the cultivation of modern cultivars of olives. Main conclusions. In recent years, there has been a significant increase in the area of cultivation, gross yield, yield of olive. Despite the fact that Europe maintains a leading position in the production of olive fruit, according to FAO, there is a significant increase in production in Africa and Asia. Different efficiency of cultivation of olives is noted by countries, which justifies the use of highly productive orchards of intensive type with high planting density, as well as the use of modern high-yielding cultivars.
Features of phytosanitary condition of rose cultivars of miniature garden group of the collection of the Nikitsky Botanical Gardens
Authors: Zvonareva L. N. , Klimenko Z. K. , Kravchenko I. N.
Published: February 2020

The objective of the research is the identification of dominant species of phytophagans and the determination of species composition of causative agents of phytopathogenic diseases of garden group of miniature rose cultivars. Methods of research . Species composition of pests was studied by visual inspection of generative and vegetative organs 1 time in 7-10 days. Samples of affections were analyzed under a binocular microscope in the laboratory. The frequency of pests’ occurrence was determined on a 3-point scale. The assessment of garden roses infestation with fungal diseases was carried out on a natural infectious background on a 5-point scale. Results and discussions. The study was performed on 49 cultivars, of which 46 were introduced species, 3 cultivars were of breeding of the Nikitsky Gardens. As a result of the research, three species of phytophagans belonging to three orders of the class Insecta - Homoptera , Lepidoptera Acarina were revealed. Green rose aphid (Macrosiphum rosae L.), rose moth (Archips rosana L.), twospotted spider mite (Tetranychus urticae Koch) were most commonly observed during the growing season. In 2016, the focus of reproduction of an invasive species - cattony cushion scale (Icerya purchasi Maskell) was found for the first time on the cultivar of the miniature group Rouletii. The species composition of pathogens of phytopathogenic diseases was identified, the most harmful of which are: powdery mildew (Sphaerotheca pannosa (Wallr)). Lev.), black spot (Marsonina rosae (Lib.) Died, rust (Phragmidium tuberculosis J.). Conclusion. The cultivars that are resistant to fungal diseases mainly dominated in the garden group of miniature roses. For the stable expression of this feature, it is necessary to create optimal conditions for cultivation: the use of preventive sprays with biological preparations or low-risk pesticides and compliance with the regime of agricultural activities. On the base of complex cultivar study, cultivar evaluation and phytosanitary evaluation of roses of the miniature garden group of the Nikitsky Botanical Gardens’ collection, an assortment for flower decoration was developed, including 46 cultivars for group planting, which can be recommended for landscaping parks, squares, streets in the populated areas of the Crimea.
Flashback
Authors: Zhao Rebecca
Published: February 2020

Inspired by graphic health narratives—or comics as some scholars may define them—my painting “Flashback” shares my experience of recalling a traumatic incident. My aim for this painting was to evoke a visceral reaction of discomfort (particularly with the sharp objects in the character’s eyes) so that viewers may feel some semblance of what I had felt. Flashback was exhibited at the Surgical Humanities Day at the University of Saskatchewan in September 2019.
Which social network could be the most convenient for the surgeon? Compare Facebook, Instagram, Twitter and LinkedIn.
Authors: Licardie Bolaños E , Mosquera Fernández C
Published: February 2020

Las redes sociales surgen como medios de comunicación entre las personas; en su expansión han llegado a abarcar no solamente la interacción social, sino que hemos llegado a utilizarlas e integrarlas en el ámbito médico y científico.

Se componen de muchas plataformas que permiten compartir información en tiempo real entre médicos, entre pacientes y entre médicos-pacientes. En consecuencia, el uso de las redes sociales en medicina ha aumentado notablemente, cerca del 90% de los médicos que tienen una cuenta en las redes sociales y hasta el 80% de los pacientes que recurren a Internet para obtener información médica1,2. Dentro de la cirugía general y digestiva, las redes sociales son una herramienta valiosa para el cirujano tanto a nivel académico, como en la práctica clínica.

Los cirujanos usamos las redes sociales para difundir intervenciones quirúrgicas, cursos, congresos y artículos académicos, lo que da lugar a enriquecedoras discusiones y debates. Independientemente del entorno de nuestra práctica clínica, las redes sociales facilitan la creación de grupos de trabajo, y lo que es más importante, funcionan como un canal directo para que los médicos compartan información con sus compañeros, colegas y cirujanos en formación a nivel mundial.

Actualmente existen diferentes tipos de redes sociales que son accesibles a todos los profesionales sanitarios. Nuestra intención es identificar cuál puede ser más útil para los profesionales de la salud y más concretamente para los cirujanos generales.
Unusual diagnosis of a giant hydatid cyst.
Authors: Lorente Herce JM , Parra Membrives P , Martínez Baena D , Jiménez Riera G , Sánchez Gálvez MÁ
Published: February 2020

La hidatidosis puede mostrar signos radiológicos atípicos que pueden inducir a un diagnóstico erróneo inicial. Presentamos el caso de un paciente alcohólico con distensión abdominal progresiva y hallazgo radiológico de un quiste gigante abdominal que ocupaba toda la cavidad abdominal y con características compatibles con un pseudoquiste pancreático. El drenaje ecoguiado permitió disminuir el contenido del quiste y observar en el control radiológico las vesículas hijas características del quiste hidatídico.
Small bowel perforation as a complication of the “Step-up approach” in infected necrotizing pancreatitis
Authors: Sánchez Gálvez MÁ , Martínez Baena D , Jiménez Riera G , Parra Membrives P
Published: February 2020

La estrategia escalonada en el tratamiento de la pancreatitis aguda necrotizante sobreinfectada ha demostrado, desde la publicación del estudio PANTER, su superioridad respecto al abordaje quirúrgico clásico en términos de morbilidad. Sin embargo, no es una técnica exenta de complicaciones. En nuestra imagen mostramos una de las complicaciones poco frecuentes que pueden surgir como consecuencia de esta estrategia terapéutica, y su solución quirúrgica. Se realizó un abordaje mixto (anterior y retroperitoneal) para solucionar la complicación y la pancreatitis de base en un solo tiempo. El resultado de la intervención fue satisfactorio, con buena evolución postoperatoria del paciente, que pudo irse de alta sin presentar más complicaciones.
ASAC and the social media
Authors: Tallón Aguilar L , Suárez Grau JM
Published: February 2020

Mostramos en este articulo la inclusión en las redes sociales de la Asociación Andaluza de Cirujanos y de la revista Cirugía Andaluza. El perfil social se ha centrado en la actividad en Twitter sobre todo, pero también con un perfil en Facebook. En ellos se intenta difundir la actividad de la asociación de manera más dinámica e intentando hacer partícipes a todos los cirujanos a nivel mundial. El numero de seguidores se ha incrementando en el pasado año 2019, y actualmente es una cuenta de Twitter que se referencia mensualmente en perfiles de colaboradores muy influyentes en el mundo de las redes sociales (RRSS). Creemos de especial interés en mantener esta actividad ya que el futuro nos esta indicando que esta es una de las direcciones por donde el mundo de la investigación seguirá creciendo.
HPV18 Associated with E-cadherin Expression in Head and Neck Squamous Cell Carcinoma
Authors: Boia Simina , Boia Eugen Radu , Ceausu Raluca Amalia , Balica Constantin Nicolae , Mederle Ovidiu Alexandru
Published: February 2020

HPV is an important oropharyngeal cancer cause, but it may have a role in other head and neck cancers? HPVpositive head and neck squamous cell carcinoma (HNSCC) epithelial-mesenchymal transition role is unclear. We included 38 cases: 20 laryngeal, 3 corresponding lymph nodes; 5 oropharyngeal, 5 hypopharyngeal, 2 rhynopahryngeal, 2 pharyngolaryngeal and 1 naso-sinusal case. Immunoreactivity was positive in nuclear expression cells, accordingly: score 1 (10-30%), 2 (30-50%) and 3 (]50%). HPV18 immunoexpression appeared in 18 cases (47.36%), (11 laryngeal, 4 oropharyngeal, 1 hypopharyngeal, 1 pharyngolaryngeal and 1 naso-sinusal). The score was 1 in larynx well differentiated type. The score was between 1 and 3 in larynx moderately differentiated types, and a significant correlation HPV18/E-cadherin was found (p=0.031). HPV18+/E-cadherin low values were noticed in larynx, oropharynx, pharyngo-larynx and naso-sinusal well and moderately differentiated types. HPV18-/E-cadherin low values were present in larynx, hypo and rhyno-pharynx moderately and poorly differentiated and larynx well differentiated types. Larynx presented HPV18/E-cadherin and moderately differentiated type significant correlation. Rhyno, hypo-pharyngeal and laryngeal presented HPV18�/E-cadherin low values association for moderately, poorly and undifferentiated types. The oropharyngeal location was associated with E-cadherin maximum values, independently of HPV18 status.
Use of Immunohistochemistry to Establish Ethiology in the Case of Primary Spontaneous Pneumotorax Patients
Authors: Grigorescu Cristina , Gavril Liviu Ciprian , Gavril Laura , Lunguleac Tiberiu , Ciuntu Bogdan Mihnea , Hinganu Delia , Patrascu Alexandru , Salahoru Paul
Published: February 2020

Primary spontaneous pneumothorax has a complex morphopathological substrate, in which active smoking plays an essential etiopathogenic role. Inflammation of the distal airways, bronchial anomalies, perivascular eosinophilic infiltrate associated with hereditary factors and physiognomy (longilli patients) lead to obstruction of distal airwayswhich is the essential element in the emergence of emphysematous changes. Immunohistochemistry (IHC) is a technique used to identify cellular or tissue (antigens) constituents by Ag-Ac, the Ac link site being identified either by direct labeling of the antibody or by a secondary labeling method. IHC reactions are based on tissue-antibody antigen binding, the latter being evidenced by direct conjugation to tracer molecules (direct reaction) or by another chain of other labeled free antibody linkages. We can consider the immunohistochemical method as having a potential utility, especially in selected patients, where there are sufficient clinical and epidemiological reasons to suspect a pneumothorax-causing disease but where the classical investigations did not provide diagnostic performance.
The Study Toughness Ecologicals Metals Materials
Authors: Rusanescu Carmen Otilia , Rusanescu Marin
Published: February 2020

This aim of this is to determine the manner of realizing tubing pipe, which have to comply with suplimentary requirements concerning the notch impact strength at lower temperature (below - 300C). We realized �73 x 5.51 mm and �89 x 13 mm pipes applying various final heat treatment variants. For each heat treatment variant were determined the mechanical properties and the impact absorbed energy at temperatures between (-60 0C and +15 0C).
Relationships Between Glial Enteric Cells, Beta-cell Signaling and Tumor Proliferative Activity in Patients with Colorectal Neoplasia
Authors: Puiu Ileana , Albu Carmen Valeria , Tartea Elena Anca , Calborean Veronica , Gheorman Victor , Dinescu Sorin Nicolae , Vasile Ramona Constantina , Dinescu Venera Cristina , Bica Elena Catalina , Romanescu Florin Marius , Tudorascu Diana Rodica
Published: February 2020

The aim of our study was to evaluate the expression of glial enteric cells at different stages of differentiation of colorectal neoplasms and to correlate these changes with the tumor proliferation index and with the sympathetic influences evaluated by the expression of beta-2 adrenoreceptors. Given that nowadays colorectal neoplasm is a major public health problem and that the molecular mechanisms responsible for malignant transformation are not fully yet elucidated, more studies are needed in order to establish other intracellular signaling pathways in such a neoplasm. By this study we concluded that the proportional decrease in the density of glial enteric cells in colorectal cancer with the degree of tumor differentiation and also their inverse correlation with the tumor proliferation index and with the expression of the adrenergic beta-2 adrenoreceptors can be considered a negative prognostic factor in this type of cancer.
1D Nanostructured ZnO Layers by Microwave - Assisted Hydrothermal Synthesis
Authors: Musat Viorica , Filip Ana , Tigau Nicolae , Dinica Rodica , Herbei Elena , Romanitan Cosmin , Mihalache Iuliana , Purica Munizer
Published: February 2020

ZnO 1D nanostructures have been gaining more and more advanced applications in various fields from electronics and optoelectronics to environment protection and medicine due to the synergy between the unique properties of semiconductor zinc oxide and those of 1D nanostructures. This paper investigates the microwave (MW)-assisted hydrothermal synthesis of 1D nanostructured ZnO layers grown on glass substrates to be used in optoelectronic applications. The effects of MW-irradiation power (400-600 W) and span (3-6 min) on the morphology, microstructure and optical properties (transmittance, reflectance, absorption coefficient and refractive index) of the resulted nanostructured layers were investigated by SEM, FTIR and UV-Vis-NIR spectroscopy. The band gap energy was calculated from optical absorbance spectra in UV-Vis range.The obtained ZnO nanostructured layers show optical transmittance between 58 and 87% and low reflection between 4.2-6.8 % at normal incidence of light in the visible spectra and transmittance values from 75 to 85% and reflectance between 4.8 and 6.7% in the near infrared spectra.
Validation and Application of an Analysis Method of Four Metabolites of Nitrofurans in Honey
Authors: Morariu Ionela Daniela , Avasilcai Liliana , Vieriu Madalina , Panainte Alina Diana , Bibire Nela
Published: February 2020

Although nitrofurans are supposed to be absent in foods, they are still used in veterinary medicine for the treatment of infections in animals not bred for consumption. That meant that there are still samples of honey contaminated with residues of nitrofurans because of bees treated with those pharmaceutical substances. Developing accessible methods to detect them is of high interest to food residue monitoring and regulation programs. We propose an immunochemical method as an alternative to detect four toxic metabolites of nitrofurans (1-aminoimidazolidine-2,4-dione, 3-amino-5-morpholinomethyl-2-oxazolidinone, 3-amino-2-oxazolidone and semicarbazide) in honey. The new method has been optimized and validate for the simultaneous determination of the four metabolites of the nitrofurans honey using biochip technology, and it has been used for the quantitative determination of the residues in 16 Romanian honey samples. The evaluated validation parameters included: linearity, sensitivity (IC50 �2.32 mg/kg), specificity and selectivity, precision (intermediate and reproducibility) and accuracy, decision limit (CCa between 0.37 and 1.05 mg/kg), detection capability (CCb between 0.42 and 1.14 mg/kg), and recovery coefficient (64�192%).
Prevalence, Biochemical and Clinical Characteristics of Resistant Hypertension
Authors: Gurgus Daniela , Ardeleanu Elena , Gadau Carmen , Folescu Roxana , Tilea Ioan , Varga Andreea , Zamfir Alexandra Simona , Boanca Mihaela , Luca Alina Costina , Zamfir Carmen Lacramioara , Baaj Teim , Nicola Patricia
Published: February 2020

The objectives of the present study were to evaluate the prevalence of resistant hypertension (RH) in primary care setting and to analyse its biochemical and clinical characteristics. After 3 months of treatment and evaluation, 721 (14.01%) of 5,146 patients with hypertension did not reach target office blood pressure of [ 140/90 mmHg. After exclusion of �white-coat effect� with ambulatory blood pressure, of secondary and pseudo- resistant hypertension, prevalence of RH was 6.74%. Lifestyle factors associated with RH were physical inactivity, obesity, high salt intake, smoking and excessive alcohol ingestion. Compared to controlled hypertension, RH patients presented higher incidence of family history of cardiovascular disease (38.90% vs 25.94%), diabetes mellitus (34.87% vs 19.01%), impaired fasting glucose (21.91% vs 19.07%), target organ damage (29.1% vs 15.95%), and cardiovascular disease (27.09% vs 17.06%). Dyslipidaemia (52.90% vs 42.03%), fasting plasma glucose (116.10�38.9 vs 107.80�37.2), HbA1c (6.41�1.42 vs 5.96�0.94), serum creatinine (1.09�0.27 vs 1.03�0.24) and microalbuminuria (21.90% vs 10.95%) were significantly higher in RH. Predictors of RH, determined by a multivariate logistic regression analysis were left ventricular hypertrophy (OD 2.14, 95% CI 1.32-3.69), renal impairment expressed as eGFR [ 60 ml/min/1.73m2 (OD 1.62, 95% CI 1.21-2.21) and the presence of cardiovascular disease (OD 1.48, 95% CI 1.02-2.16).
Characterization of Healthy and Tumor Oral Cell Lines of Human Origin. The preliminary stage in the assessment of relevant chemical compounds with impact on dentistry
Authors: Corlan Ion Virgil , Cheveresan Adelina , Vaduva Delia Berceanu , Nica Cristian , Faur Alin , Rumel Ramona Camelia , Popovici Ramona Amina
Published: February 2020

The present study was aimed to evaluate the confluence percentage of three oral cell lines, namely primary gingival keratinocytes (PGK), primary gingival fibroblasts (HGF) and tongue squamous cell carcinoma (SCC-4). All cells have been monitored at different passages for 21 days. Evaluation of confluence percentage reveals the fact that primary gingival keratinocytes and tongue squamous cell carcinoma at small passages requires a period of about two weeks to reach a confluence of approximately 80% while for the gingival fibroblasts a period of about three times smaller is satisfactory.
Behavior of Polymer Thin Films Deposed on Bronze Surfaces at Cavitation Erosion
Authors: Lazar Iosif , Bordeasu Ilare , Circiumaru Adrian , Mitelea Ion , Bocii Liviu Sebastian
Published: February 2020

One of the most actual problems regarding reparation and reconditioning of ships propellers surfaces or of some parts of hydraulic machines (turbines, pumps) is that of the erosion produced by cavitation, both from technical difficulties and costs. That is why researchers and builders are searching for new cheap solutions mainly regarding these surfaces protection. The present study concerns the analysis of polymer thin films meant to protect surfaces of bronze parts exposed to cavitation. The bronze is a material frequently used to cast maritime or fluvial vessels propellers. The test, conducted at Timisoara Polytechnic University Cavitation Laboratory on standard vibrating equipment, showed the poor resistance of polymer films and revealed the necessity of continuation the studies especially in finding new techniques in order to increase the polymer films adhesion to the metallic surfaces that had to be protected.
Analysis of Reaction Products After Ignition Process of 1-octanol/air Mixtures on a Hot Surface
Authors: Mitu Maria , Brandes Elisabeth
Published: February 2020

1-octanol is considered an alternative to conventional diesel. In order to know the ignition parameters of 1-octanol, an experimental study of the explosive combustion of 1-octanol/air mixtures at ambient pressure and various initial temperatures was performed on a hot stainless-steel surface in a closed vessel. The ignition temperatures of 1-octanol/air mixtures at different initial conditions were determined. Using gas chromatography-mass spectrometry (GC-MS) and gas chromatography with flame ionisation detector (GC-FID) methods, the composition of the reaction products was investigated.
In vitro Evaluation of Topical Fluoride Varnishes Effect on Enamel Demineralization Around Orthodontic Brackets
Authors: Oancea Roxana , Mesaros Anca , Balean Octavia Iulia , Podariu Angela Codruta
Published: February 2020

The aim of this in vitro study was to test the effectiveness of applying the fluoride varnish on bracketed teeth with 2 types of bonding agent. 10 patients aged 12-18 (mean age 13.06 +/- 1.72 years) were scheduled to have the four fist premolar teeth extracted. The teeth were dived in 4 groups: 2 experimental and 2 controls. The teeth were cut in half so 80 surfaces were analyzed. The brackets were collated with Transbond XT and Fuji Ortho Lc. For each of the materials that have been used there was a test and a control group. The tests groups received one single application of Duraphat. The content in fluoride was measured by spectrophotometer. The mean values of fluoride indicated an important increase in the fluoride content after using resin modified glass ionomer cement and fluoride varnish. Statistically significant differences were determined between each of the control and treatment group when both materials have been used, after 10 days and one month application of the varnish. The study pointed out that the fluoride varnish combined with resin modified glass ionomer cement is more efficient than the classical resin composite in preventing demineralization around orthodontic brackets.
Fetal Cerebral Monitoring During the Second Stage of Labor
Authors: Nastase Leonard , Luminos Monica , Jugulete Gheorghita , Merisescu Madalina Maria , Stoicescu Silvia Maria
Published: February 2020

The moment of perinatal hypoxic injury is still difficult to be identified by current monitoring techniques. Recent studies highlights that the effectiveness of therapy in hypoxic ischemic encephalopathy, such as therapeutic hypothermia and antioxidant agents, is determined by the time elapsed from the moment of injury to the begining of intervention. Twenty six term newborns were analyzed, 13 from vaginal delivery and 13 extracted by cesarean section. The group selection criteria were: term pregnancy (gestation age �
37 weeks), normal labor, cranial presentation, without fetal malformations and normal neonatal transition. We believe that additional fetal brain monitoring (NIRS and/or aEEG) can predict fetal brain events due to severe prepartum acidosis. Intrauterine fetal cerebral saturation is at the lower limit of postnatal neonatal cerebral saturation. FTOE is maximum during vaginal or cesarian section delivery compared to those in the first 10 min of life. The mode of delivery does not significantly affect FTOE or placental oxygen blood supply. Because the hypoxic - ischemic injury has accurred during late decelerations, consider it necessary to identify hypoxic markers prior to detection of this typ of FHR.
Bioactive Compounds from Artemisia campestris L. Subsp. Campestris
Authors: Ivanescu Bianca , Lungu Cristina , Vlase Laurian , Gheldiu Ana Maria , Grigorescu Cristina , Corciova Andreia
Published: February 2020

Artemisia campestris L. (field wormwood) is a known medicinal plant used mainly in Asian medicine and most often overlooked in the western world, despite its cosmopolitan distribution. The aim of this study was to investigate the phytochemical composition of A. campestris from Romanian spontaneous flora in order to determine the bioactive molecules and to assess the antioxidant effect of the plant extract. For this purpose, we applied LC-MS methods for the analysis of phytosterols and polyphenols and developed new methods for the analysis of methoxylated flavones and sesquiterpene lactones, specific compounds in Artemisia genus. The paper is the first to report the concentration of these compounds in the indigenous plant and also to identify some new compounds, previously not reported in this species, such as eupatorin, casticin, and acacetin. The plant extract showed significant antioxidant activity in both radical scavenging and reducing power assay, well correlated with the polyphenolic profile.
The Use of Diacrylic Resins in Dental Restorations
Authors: Romanec Cristian , Stan Cristinel Ionel , Hinganu Marius Valeriu , Scutariu Monica Mihaela , Rosu Sorana , Hinganu Delia
Published: February 2020

The materials as well as the procedures used successfully in modern dental restorations are based on scientific selection criteria, which can predict outstanding results, both in terms of physiological aspects and the durability of the performed maneuvers.The rationale of using certain materials, as the success or failure in using certain techniques, has contributed to the evolution of dental restorations. The optimal way to combine the material with its applicability and finishing technique implies an exhaustive approach to the subject that still requires research, that adress to specialists, in order to improve its refinement and development.Among the restoration materials, those that satisfy the aesthetic requirements of the patients are considered to be composite resins. With all the advantages resulted from their intrinsic characteristics, it should be noted that composite resins still have inconveniences, primarily linked to the polymerization shrinkage, which causes a gap between the obturation and the dental tissue, resulting in the formationof marginal microinfiltrations with all the drawbacks associated with it. The purpose of the experimental research is to evaluate the marginal microinfiltrations at the level of the class II cavities restoration with composite diacrylic resins, according to various techniques of restoration and to establish the optimal technique to minimize side effects.
Investigation on Parabens Occurrence in Romanian WWTP Sludge by LC-MS/MS Method
Authors: Iancu Vasile Ion , Petre Jana , Galaon Toma , Vasile Gabriela Geanina , Radu Gabriel Lucian
Published: February 2020

A sensitive and precise method for detection of five parabens in sewage sludge was developed based on ultrasonic assistedextraction, SPE clean-up and LC-MS/MS. Most of the parameters that affect the extraction step such as type of solvent and volume, extraction time were optimized. For ultrasonic extraction it was used a mixture of methanol: acetone, then the extract was centrifuged in order to obtain clean supernatant and the extract was purified on polymericSPE cartridges. The parabens were separated on C18 column in 13 min at 18�C using a gradient of mobile phase of 0.01% acetic acid and acetonitrile. Using the method, limit of quantitation (LOQ) were obtained ranging from 0.4 to 2ng/g. All recoveries ranged from 71% to 109% for all compounds. The repeatability and reproducibility between days expressed as RSD (%) were less than 7.4% and 14.5%, respectively. The sum concentrations of all parabens for each sludge sample ranged between 19 ng/g dry weight and 32.7 ng/g dry weight. The study of the profile sample composition shows that the average contribution of each compound of the total parabens concentration was as follow: methyl paraben 62.9%, ethyl paraben 18.6%, iso-propyl paraben 10.9%, propyl paraben 10.8%. This result indicate that methyl paraben is the most used paraben followed by ethyl paraben.
The Field Limit Between Neurophysiology and Psychopathology Oro-Facial Apraxia
Authors: Raftu Gheorghe , Nechita Aurel , Budacu Cristian Constantin , Porumb Anca , Macovei Luana Andreea
Published: February 2020

Praxia represents the totality of the gestures and movements necessary to perform complex voluntary actions in order to accomplish a goal. Praxia has two aspects: on the one hand, intentional activity and on the other hand a mnestic activity based on memorizing the succession over time and space of the various movements to be performed in order to accomplish the intentional action. Programming the fulfillment of a voluntary action in order to achieve a well-defined purpose proceeds gradually, at different successive levels. The first level is the conceptual one. The person aims to achieve a certain purpose, sets the purpose of the voluntary motor action. The second level is that of the kinetic formulation of action, gesture. The individual disintegrates from the mnesic stock of all kinetic formulas he has learned during his ontogenetic development those formulas that are most appropriate to achieve the proposed action. The third level includes central and peripheral motor innervation, pyramidal, extrapyramidal, cerebellar and medullary motoring ways, which are the peripheral performers of the voluntary action. At this level the harmonious interactions between the different muscles involved in the movements are established, as well as the harmonious innervation of the synergic muscles, fixators, agonists and antagonists. The study comprises 5 patients admitted in the clinic of psychiatry in Constan�a, who presented oro-facial-lingual apraxia, apraxic dysphasia and aphasia, appeared in various evolutionary phases of intracranial neoformative processes. Apraxia was due to the increase of the kinetic engraving threshold, to the laughter they are sequenced by the logic of gesture efficiency; the often repeated, deeply fixed, kinetic engraves are automated in time.The co-ordination needed to perform a gestional motor task in order to accomplish a determined action has significant psychological implications.
Arthroscopic Treatment of Patients with Arthrofibrosis Following Total Knee Replacement
Authors: Dan Daniel Oltean , Zsolt Gabri Jozsef , Apostu Dragos , Paiusan Mihai Gheorghe , Dan Cristian Paul , Bardas Ciprian Alin , Tomoaia Gheorghe , Benea Horea Rares Ciprian
Published: February 2020

The main objective of the current study was to evaluate the success of arthroscopic arthrolysis treatment of patients with knee stiffness after total knee arthroplasty. Six patients who underwent arthroscopic arthrolysis were evaluated retrospectively, all of them being treated conservatively before going for surgery. Results showed significant improvement of range of motion and Knee Society Score at the latest follow up compared to the preoperative values. This study concludes that arthroscopic arthrolysis is an effective and reproductible technique for the treatment of knees stiffness after total knee arthroplasty.
High Posterior Tibial Slope Influence Medial Meniscus Injuries in ACL Deficient Knees
Authors: Marcu Iulian , Oproiu Ana Maria , Mihailide Nicolae
Published: February 2020

The purpose of the current study was to evaluate the correlation between the tibial slope and medial meniscus injury in anterior cruciate ligament deficient knees. A total of 223 patients with primary ACL injury admitted to Foisor Orthopedic Hospital between 2015-2016 were included in this study. The posterior tibial slope was evaluated on a lateral x-ray view of the knee and was defined as the angle between the line joining the tibial plateau and the line perpendicular to the longitudinal axis (the proximal tibial anatomical axis). Patients were divided into two groups depending on the posterior tibial slope ([9.9 and �10), and a Chi square test was used to evaluate if there is any correlation between this and internal meniscus injuries, and Fisher�s exact test was used to verify this. Overall medial meniscus lesions were found in 43.5% of the patients. The mean value of the posterior tibial slope was 11.19+/-2,685. After grouping patients in low and high group ([9.9 and �10), there were 66.8% in the high tibial slope group and 33.2% in the low group. In the high PTS group there were 93 patients with medial meniscus lesion (62.4%), and 56 (37.6%) without medial meniscus lesion. The mean posterior tibial slope was higher in the medial meniscus tear group (11.78 degrees), than mean PTS in the group without medial meniscus lesion (10.42 degrees). There was a strong correlation between high tibial slope and medial meniscus lesions (p=0.015). The main finding of the current study is that there is a statistically significant correlation between posterior tibial slope higher than 10 degrees and internal meniscus tears.
Interrelations Between Odonto-Parodontal Affects of the First Permanent Molar and their Odontogenetic and Morfostructural Peculiarities
Authors: Anistoroaei Daniela , Matei Madalina Nicoleta , Pacurar Mariana , Buzatu Roxana , Porumb Anca , Romanec Cristian
Published: February 2020

The permanent first molar is the first tooth in the permanent series that erupts into the archway and thus transforms the temporary dental arcade into mixed arcade, being the only stable element throughout the mixed dentition. The plurivalent importance of the permanent molar must be considered permanently in the harmonious development of the dento apparatus. This tooth has a determining role in dental arcade functionality, being the oldest witness of the permanent occlusion. The permanent first molar is a guardian of the occlusal memory and contributes to the agreement of the predetermined with the posterior one (the temporo-mandibular joint). The first permanent molar improves the relationships in the vertical plane, the early loss of it generates morphological and functional disorders which takes place cascaded across the arcade, and its extraction must be considered a personal failure of the dentist. The study consists of 80 patients divided into two groups; the group I consists of 45 children with chronological ages ranged between 5-6.6 years; the second group selected from dental care, a total of 35 children aged between 8.6-10 years. Dental caries morbidity has increased significantly over time and surprised by age the younger becoming a true social scourge. The current pediatric dentistry emphasizes new aspects of the normal and pathological growth of the dento-maxillary apparatus and underlines the special significance of the morpho-structural and functional integrity of the odontous units in close correlation with the subsequent development of the dento-maxillary apparatus in general.
Arrhythmia Risk in Patients with ChronicHepatic Disease
Authors: Calborean Veronica , Gheorman Victor , Dinescu Sorin Nicolae , Stanca Diana , Galceava Oana , Fortofoiu Maria , Mita Adrian , Mihailovici Alexandru Radu , Miscoci Silvia Alina , Baleanu Vlad Dumitru , Dinescu Venera Cristina
Published: February 2020

Cardiac affectation is one of the leading causes of death in the world. Rhythmic disorders such as ventricular extrasystoles, atrial extrasysoles, atrial fibrillation, atrial flutter represent a major risk factor with a gloomy progression and prognosis. Our goal was to analyze the existing arrhythmia risk in patients with chronic hepatic disease. Being known the alteration of the somatic status of the patient with liver cirrhosis or other chronic liver disease in the presence of comorbid cardiac symptoms, we consider vital to prevent arrhythmia risk in hepatic pathology.
The Association Between Resistivity Index (IR) and the sFlt-1 and PIGF Values in Pregnant Women With Risk of Preeclampsia
Authors: Toth George , Craina Marius , Stelea Lavinia , Citu Cosmin , Neamtu Radu , Fogorossy Atila , Moleriu Radu Dumitru , Bardan Razvan , Petre Izabella , Susan Razvan , Cheveresan Adelina , Suciu Nicolae
Published: February 2020

Worldwide, 5-8% of pregnant women are diagnosed with preeclampsia. This disease increases the morbidity and mortality of the fetus and pregnant woman, especially in developing countries. Preeclampsia is characterized by systolic blood pressure ] 140mmHg or diastolic blood pressure] 90mmHg as measured twice, and 24 h proteinuria �0.3 g, after 20 weeks of gestation. The cause of preeclampsia is still incompletely elucidated. Numerous studies have suggested to modernize the definition of preeclampsia by incorporating key biomarkers of either placental or vascular origins, including placental growth factor (PIGF) and antiangiogenic factors such as tyrosine kinase-1 (sFlt-1) in the diagnosis of preeclampsia and the risk of occurrence of the disease in the second trimester of pregnancy [1-5]. We studied a group of 50 patients with a 21-week pregnancy diagnosis, we calculated the ratio between sFlt-1 and PIGF and we tested to see if there was an association between this ratio and the resistivity index (IR) of the uterine artery using the artery Doppler ultrasound. The PIGF level in our group was decreased in women who developed preeclampsia compared to the control group where this problem did not occur. Doppler ultrasound examination during the second trimester of pregnancy may provide extra data for prediction of preeclampsia. Although much of pathophysiology of preeclampsia has been explained, the exact etiology of this disorder remains unclear. It is certain that before the clinical signs of preeclampsia are detectable, there is an imbalance between pro-angiogenic and anti-angiogenic factors.
CAD-CAM Occlusal Splints: Milling and Printing Methods
Authors: Buduru Smaranda , Talmaceanu Daniel , Baru Oana , Buduru Rares , Szuhanek Camelia , Mesaros Anca
Published: February 2020

In dentistry, splints are often used as means of protecting teeth, ceramic restorations or for treating temporomandibular dysfunction. Digital dentistry has become a common tool involving the following: intraoral scanners, model scanners, design software, computerized milling or printing. Our study aims at comparing two different methods of producing an occlusal splint (milled and printed) with the end result of determining the most suitable solution for patients in terms of time, costs, efficiency, and medical results.
Plasma Electrolytic Oxidation Treatment of Zr-2.5%Nb Alloy for Corrosion Resistance Enhancement
Authors: Coaca Elisabeta , Marin Alexandru , Rusu Oana , Malinovschi Viorel , Andrei Victor
Published: February 2020

Anticorrosion layers were prepared on commercial Zr-2.5%Nb alloy by employing plasma electrolytic oxidation (PEO) process in aqueous electrolyte solutions. Microstructure and electrochemical behavior were evaluated using X-ray diffraction (XRD), optical metallography and potentiodynamic polarization measurements. The obtained coatings are uneven, presenting a dominant monoclinic crystallographic phase of ZrO2. Enhanced corrosion resistance was attributed to the PEO-treated samples compared to the commercial black oxide coating.
The State of Air Pollution with PM2.5 in the City of Targu Jiu
Authors: Capatina Camelia , Cirtana Daniela
Published: February 2020

Atmospheric particle matters which have many negative effects to the environment and human health have raised the public awareness in last years. Urban centers, through their specific activities, generate a new and complex form of pollution that affects all the quality factors, including those of the environment, the population being the main victim. This paper presents the status of PM2.5 in the air of T�rgu-Jiu city for for 2015-2017, and assessment of the effect of meteorological factors to the values of PM2.5 content. The results indicate that from the three years under study, the annual PM2.5 concentration values exceeded the admissible limit value only for 2015. The highest pollution levels occurred during the months of February, March, October and November of the three analyzed years due to a higher fuel consumption for heating. Regarding the effect of meteorological factors such as: rainfall and temperature to the PM2.5 level, it was observed a decrease of the concentration of PM2.5 as air humidity increases and an increase of PM2.5 concentration as air temperature decreases.