bluuebunny/crossref_metadata_2025 huggingface dataset:
CRECIMIENTO Y ACUMULACIÓN DE NO3- EN LECHUGA HIDROPÓNICA CON RELACIONES NITRATO/AMONIO EN DOS ESTACIONES DE CULTIVO
Authors: Lara-Izaguirre Ana Y. , Rojas-Velázquez Angel N. , Romero-Méndez Mauricio J. , Ramírez-Tobías Hugo M. , Cruz-Crespo Elia , Alcalá-Jáuregui Jorge A. , Catarina Loredo-Ostí Catarina
Published: February 2020

La lechuga (Lactuca sativa L.) es una hortaliza de hoja que en México genera un importante ingreso económico; sin embargo, los altos niveles de nitratos (NO3-)  pueden ocasionar problemas de salud, ya que generan compuestos carcinogénicos. Una alternativa para disminuir el NO3- en hojas es sustituyéndolo por amonio (NH4+), lo que podría beneficiar la salud humana reduciendo la ingesta de NO3-. El objetivo del presente estudio fue evaluar el crecimiento y acumulación de NO3- en lechuga con diferentes relaciones de NO3-/NH4+ en la solución nutritiva en dos estaciones de cultivo. Las lechugas se cultivaron en un sistema hidropónico de raíz flotante. El diseño experimental fue completamente al azar en arreglo factorial 4 × 2, cuatro relaciones de NO3-/NH4+ (100/0, 80/20, 65/35 y 50/50) y dos estaciones de cultivo (verano y otoño), con un total de 8 tratamientos. Las variables evaluadas fueron peso seco de raíz (PSR), de hojas (PSH) y total (PST), área foliar (AF) y concentración de NO3- en peciolo. No se encontraron diferencias significativas entre estaciones para PSH, PST y AF. En otoño el PSR aumentó 11 % en comparación con el de verano. En verano el contenido de NO3- en peciolos aumentó 55 % comparado con el de otoño. La relación 100/0 aumentó 25 % el PSH, PST y AF, y 15 % más de NO3- en peciolo. Durante el verano, utilizando una relación 100/0 se presentó un aumento de 4 % en el PSH, PST y AF. Al usar NH4+ en las relaciones 65/35 y 50/50 se redujo 25 % el crecimiento y 15 % la acumulación de NO3- en peciolo. En la estación de verano la aplicación de 100/0 en plantas de lechuga aumentó el crecimiento. En la estación de verano el contenido de NO3- en peciolo aumentó el doble.
NUTRITIVE POTENTIAL OF SOTOL (Dasylirion cedrosanum) SEEDS
Authors: Orozco-Sifuentes Martha M. , García-Martínez J. Eduardo , Arévalo-Sanmiguel Carlos A. , Ramírez-Godina Francisca , Reyes-Valdés M. Humberto
Published: February 2020

Agriculture in the 21th century faces the challenge of sustainable food production in a scenario of climate change. While highly caloric processed foods increase, there is a deficiency of micronutrients, fiber and good quality protein. Sustainable use of plants with wide adaptation to harsh environments can help to improve human diet. A remarkable genus for its wide adaptation, mainly in arid lands, is Dasylirion. It comprises a group of plants commonly called sotoles, broadly distributed in arid zones of Mexico and Southern United States. The use of this wild, albeit cultivable plant, is mainly for production of an alcoholic spirit called sotol. The study of the nutritional content of Dasylirion seeds can give an added use to this genus. The purpose of this research was to assess the nutritional quality of the seeds of an abundant species of this group, D. cedrosanum. Bromatological and mineral analyses were performed in populations from the states of Coahuila and Zacatecas, in Mexico. Samples were taken from three locations, with the harvest of the seeds three plants per site and triplicate determinations with whole wheat flour control. The sotol flour had higher protein content (27.7 %), 7 times more fat (18.4 %) and 10 times more fiber (16.2 %) than wheat flour. Additionally, sotol flour had 35 times more Ca, six times more Fe and three times more Zn and Cu than wheat flour. Although these remarkable nutritional parameters were consistent across locations, the Buenavista site plants showed the highest nutritional values. These results indicate that sotol seeds have a good potential as food and feed for humans, cattle and poultry.
EFECTO DE LA DEFENSINA RECOMBINANTE (pdf1.2) SOBRE MICROORGANISMOS BENÉFICOS ASOCIADOS A FRIJOL GENÉTICAMENTE MODIFICADO
Authors: Granados-Vallejo Miriam , Grageda-Cabrera Oscar A. , Sánchez-García Bertha Ma. , Mora-Avilés Ma. Alejandra
Published: February 2020

Los organismos genéticamente modificados tienen como requisito para su liberación al ambiente en etapa experimental un análisis de los posibles riesgos que pudiera ocasionar al medio ambiente, a la diversidad biológica y a la sanidad vegetal, animal y acuícola, de acuerdo con la ley de bioseguridad de los organismos genéticamente modificados en México. El frijol (Phaseolus vulgaris L.) genéticamente modificado con el gen defensina de Arabidopsis thaliana (pdf1.2) tiene la característica de conferir tolerancia/resistencia de amplio espectro contra hongos fitopatógenos del frijol. Se analizaron las interacciones entre cinco líneas homocigotas del cv. Flor de Mayo Anita modificadas genéticamente con el gen defensina (FMA-pdf1.2), con los microorganismos Trichoderma harzianum, hongo antagonista de patógenos, Rhizobium tropici, bacteria fijadora de nitrógeno y Rhizophagus intraradices, hongo micorrízico. El suelo estéril se inoculó con estos microorganismos y se evaluó su densidad, infección o colonización en las raíces del frijol. T. harzianuam mostró mayor número de unidades formadoras de colonias (UFC) en suelo de plantas no modificadas que en las que expresaron defensina; sin embargo, los valores de UFC en las plantas modificadas se encontraron dentro del intervalo reportado por otros autores para este tipo de relaciones simbióticas. Por otra parte, aun cuando R. tropici se desarrolla intra e intercelularmente, espacios donde se expresa la proteína defensina, el número de nódulos superó al de las plantas testigo no modificadas. Finalmente, el porcentaje de infección de R. intraradices fue inconsistente, éste resultó bajo tanto en plantas FMA-pdf1.2 como en plantas no modificadas, por lo que en este caso no fue claro el efecto de la defensina. Lo anterior sugiere que la presencia de defensina no representa un factor de riesgo contra microorganismos que no invaden el espacio inter e intracelular de las plantas modificadas, o bien contra microorganismos no incluidos en el espectro de acción de pdf1.2.
PARA LEITORES EXTEMPORÂNEOS
Authors: Borges Monteiro Silas , Avila Severo Anaise
Published: February 2020

Este ensaio procura demonstrar que Heráclito poderia ser considerado leitor de Friedrich Nietzsche. Esta especulação sustenta-se, basicamente, sobre a decisão estilística de Nietzsche em escolher seus leitores, sobre as vivências partilhadas entre o filósofo alemão e o grego e da presença de Heráclito, em Ecce homo, como aquele com quem Nietzsche mais se sentia acolhido. O interesse mais evidente do jovem professor da Basileia sobre o filósofo obscuro se vê na destinação de tempo que ele dá em seu curso de 1873. Mais do que examinar as alternativas conceituais, o autor de O nascimento da tragédia quer aprender com as vivências dos pré-platônicos, sobretudo com seu filósofo trágico por excelência. Embora a relação estudada entre Nietzsche e Heráclito reconheça a óbvia questão cronológica, este ensaio fabula sobre possibilidades da anacronia de Heráclito leitor de Nietzsche.
RESULTADOS DE LA IMPLANTACIÓN DE UN PROTOCOLO DE CORRECCIÓN DE ANEMIA PREOPERATORIA EN LA RECUPERACIÓN INTENSIFICADA DE CIRUGÍA COLORRECTAL ELECTIVA
Authors: Cabellos Olivares Mercedes , Jimenez G Victor , Labalde M María , Torralba Miguel , Rodriguez F José Ramón , Atance M Juan Carlos , Amorós A Beatriz
Published: February 2020

Introducción: Los protocolo ERAS recomiendan la detección y optimización de la anemia preoperatoria. El objetivo principal es valorar si la implantación de un protocolo de corrección de anemia preoperatoria en cirugía colorrectal electiva con un protocolo ERAS (grupo ERAS) reduce las transfusiones con respecto a un grupo de pacientes operado de la misma patología previo a su implantación (grupo preERAS). Objetivos secundarios: valorar estancia hospitalaria, complicaciones, y reingresos a los 30 días tras el alta. Material y métodos: Comparamos los primeros 121 pacientes consecutivos que participaron en un protocolo ERAS con un protocolo corrección de anemia preoperatoria con los 135 previos a su implantación. Se consideraron resultados significativos p<0,05. Resultados: Se redujo el número de pacientes transfundidos en el grupo ERAS (31 (22,96%) vs 15 (12,4%), p=0,028) y el número total de concentrados de hematíes transfundidos (3 ± 1,57 vs 1,8 ± 0,56, p <0,001)) con la aplicación del protocolo. No se encontraron diferencias estadísticamente significativas en los pacientes que recibieron hierro oral, pero sí en los que recibieron hierro intravenoso (3 vs 31, p <0,001). Se redujo la estancia hospitalaria (11±3,8 vs 9,8±3,7, p=0,018), sin aumentar la tasa de complicaciones ni los reingresos a los 30 días. Conclusión: La aplicación de un protocolo de optimización de anemia preoperatoria en pacientes sometidos a cirugía colorrectal electiva siguiendo las guías ERAS redujo el número total de pacientes transfundidos, el número de concentrados de hematíes trasfundidos y la estancia hospitalaria.
Frekuensi Hari Hujan Menurut Bulan di Kota Balikpapan dengan Rantai Markov Waktu Diskrit
Authors: Azka Muhammad
Published: February 2020

The problem proposed in this research is about the amount rainy day per a month at Balikpapan city and discretetime markov chain. The purpose is finding the probability of rainy day with the frequency rate of rainy at the next month if given the frequency rate of rainy at the prior month. The applied method in this research is classifying the amount of rainy day be three frequency levels, those are, high, medium, and low. If a month, the amount of rainy day is less than 11 then the frequency rate for the month is classified low, if a month, the amount of rainy day between 10 and 20, then it is classified medium and if it is more than 20, then it is classified high. The result is discrete-time markov chain represented with the transition probability matrix, and the transition diagram.
Faktor-Faktor di Industri Galangan Kapal yang Dapat Berkontribusi pada Isu Perubahan Iklim
Authors: Hidayat Taufik
Published: February 2020

The shipbuilding industry is the fabrication industry in sectors involving the use of heavy equipment materials and manufacturing practices can have an impact on the environment and thus can contribute to climate change. This study reviewed the literature to use the approach can imagine a process that impact on the environment, and occurs in the shipbuilding industry. The hope can give the shipbuilding industry a chance to set a long-term vision on an individual basis, not because in the end was forced to make as a result of coercion by the government or the pressure of the surrounding community, but also address the environmental impact more effectively, and perhaps even get a commercial advantage from the innovations developed. This can be realized with the implementation of management strategies. Management strategy is a series of decisions and managerial actions that determine the long-term performance of the corporation. Where this includes environmental-scanning (external and internal), strategy formulation (planning long-term strategy), strategy implementation, and evaluation and control. So this study emphasizes the monitoring and evaluation of external opportunities and threats on the strengths andweaknesses of the corporation. The results of this study establish a six-facto-a major factor in the shipbuilding industry that can contribute to climate change, namely material handling, metal working, the noise, the government and the surrounding community, the level of technology, and ship recycling.
Analysis of Swirling Flow on Cyclone Separator Using CFD to Reduce Particulate Matter of Diesel Engine
Authors: Nurcholik S. , Adnyani L. , Sa’adiyah D. , Rahmah L. , Revari R.
Published: February 2020

Particulate matter (PM) is one of the component in flue gas of diesel engine. As one of air pollution, PM needs more attention, because its existence irritates respiratory. The using of cyclone as additional part of diesel engine, can reduce PM concentration before released to surrounding. However, the shape of cyclone affects the percentage of PM due to turbulence and length of track. In this paper, the prediction of swirling flow in different type of cyclone separator will be conducted by using Computational Fluid Dynamics (CFD). The analysis will focus on particle movement inside the cyclone separator and its turbulence phenomenon. There are four types of cyclone separator which will be observed: Perry’s method, Stairmand’s method, and the modification of each methods. All of these cyclone separator will have the same velocity inlet, and will be simulated using RNG k- model as the turbulence modelling. The simulation shows that the Stairmand’s method has the best turbulence and can collect most of PM.
Strategi Pengembangan Wisata Budaya di Kawasan Pecinaan Lasem
Authors: Ariyaningsih Ariyaningsih
Published: February 2020

Lasem is one of the sub-districts in Rembang District with historical and cultural heritage of Chinesse that have the potential for the development of cultural tourism as well as introducing to the wider community. The potential is still not utilized and developed optimally. This study was conducted to formulate strategies of cultural tourism development in accordance with the potential problems in the region.The analysis used is AHP(Analysis Hierarcy Process) combination SWOT analysis to determine strategy of development of Lasem Chinatown Area. In achieving the objectives of this study identified the strengths, weaknesses, opportunities, and threats that exist in the Lasem Pecinan Region. Then, the results of observationwere processed in the form of AHP analysis and generated the factor with the most important weight is the financing of development and attractiveness of the building. The next step, comparing the selected SWOT factor to produce the strategy component. The strategy was reprocessed using AHP to get priority of Lasem's area development strategy.The study found that the strategy of making tourism route, financing strategy for tourist attraction, the improvement of tourism accessibility, the development of tourism based on community empowerment, and the provision of supporting facilities in the tourism area. In addition, the first priority of strategy is the improvement of accessibility.
Studi Perencanaan Pembangkit Listrik Tenaga Sampah Pada TPA Sambutan Kota Samarinda
Authors: Huda Thorikul
Published: February 2020

Selama ini sampah selalu dianggap sebagai masalah yang lazim ditemukan pada wilayah perkotaan. Secara umum tata kelola sampah hanya memindahkan sampah dari tempat penampungan sementara (TPS) ke tempat pemrosesan akhir (TPA). Perkembangan teknologi yang semakin maju memberikan solusi alternatif pengolahan sampah menjadi sumber energi. Penerapan teknologi pengolahan sampah menjadi sumber energi terbarukan yaitu Pembangkit Listrik Tenaga Sampah (PLTSa) Kota Samarinda merupakan kota padat penduduk yang menghasilkan produksi sampah yang cukup besar. Sampah organik yang ditimbun akan mengalami proses dekomposisi secara anaerobik sehingga menghasilkan gas yang disebut dengan gas landfill yang dapat di konversikan menjadi energi listrik. Pada penelitian ini untuk mengkonversi gas landfill menggunakan teknologi gas engine dengan tipe janbacher J320 GS yang dapat meghasilkan listrik sebesar 1.063kW. Gas landfill yang dihasilkan pada TPA Sambutan Kota Samarinda mencapai nilai 684.693,866 pada tahun 2019 dan akan meningkat setiap tahunnya sampai dengan tahun 2034 dengan energi listrik yang dihasilkan 2.822.107,61 kWh pada tahun 2019 dan meningkat sampai dengan tahun 2034 dan Biaya investasi untuk pembangunan PLTSa yaitu sebesar Rp. 25.092.450.601 dengan analisis evaluasi investasi NPV= Rp.17.539.868.600, IRR= 19%, BCR= 1,672 dan PB= 3,4 Tahun. Dari hasil evaluasi tersebut diperoleh bahwa perencanaan PLTSa TPA Sambutan di Kota Samarinda dapat memenuhi kriteria kelayakan untuk dibangun.
Diario social di un Rettore 4
Authors: Dei Luigi
Published: February 2020

Luigi Dei has found his own language through which he, while amusing himself and everyone else, offers us food for thought, information, knowledge and, above all, with continuity and originality, he disseminates science by apparently talking about other things, playing with our emotions, with our history, traditions and common sense. A cultural divertissement in which the author exploits the visibility and prestige of his role as Rector to give credibility and legitimacy to the project of making scientific knowledge more and more accessible and shared, also thanks to his great ability to intertwine themes and languages. Dei uses all the colours of the diversified palette of scientific disciplines constituting our knowledge in order to show us how each of them is assigned an irreplaceable role in that task of understanding reality that science has always taken on. He highlights how science combines method and rigour with creativity and imagination, but he also combines research and scientific knowledge with sensitivity and communication skills. (Laura Solito)
La costituente libertaria di Camillo Berneri
Authors: Sacchetti Andrea
Published: February 2020

This work aims at identifying the historical, cultural, political and strategic reasons that in 1935 led the anarchist Camillo Berneri to write the Constitution of the Italian Federation of Socialist Municipalities (based on the Italian acronym, FICS), an original constitution project with no predecessors within the anarchist movement which, unsurprisingly, remained unpublished for a long time. The research aims at explaining its existence within the Berneri’s intellectual path, interpreting it as the result of a long elaboration of his ideas and operational proposals on libertarian federalism. This maturation is characterized by the presence of different influences, with those shared with Gaetano Salvemini’s concrete and problematic approach being the decisive ones.
Intraspecific, interspecific and intergeneric hybridization of stone fruit plants
Authors: Bunchuk E. I. , Shoferistov E. P. , Tsupka S. Yu.
Published: February 2020

Aim. The aim to identify valuable source material from the number of intraspecific, interspecific and intergeneric hybrids of stone fruit plants to improve and expand the varietal composition of peach that meets the needs of industrial and amateur gardening. Methods. Program and methods of varietal study of fruit, berry and nut crops / Ed. G. A. Lobanov. Michurinsk, 1973. 492 p. Program and methods of selection of fruit, berry and nut crops / Ed. G. A. Lobanov. Michurinsk, 1980. 529 p. Program and methods of selection of fruit, berry and nut crops / Ed. Sedova and T. P. Ogoltsova. Orel: VNIISPK, 1999. 608 p. Results. New genotypes of peach, which are sources of cytoplasmic male sterility (CMS), were selected; large-fruited peach I4 970-89 was isolated, as a pollinator for genotypes with male sterility; in the population of hybrid seedlings F2 (peach of the world x David peach) we identified new genotypes of plants with absent characters in their original species; with resistance to powdery mildew and leaf curl, dwarf plant growth, forms with decorative double flowers, white, pink and purple-red color of the petals of the corolla, bell-shaped and rosy flower types, male sterility, pollen fertility and honey taste of the fruit inherited from his wild ancestor - David peach. Summary. Selected maternal genotypes of the original parental forms of apricot, with a character of CMS - 189-88, 249-81, 498-86. They are of breeding value for the development of new peach cultivars. Peach I4 970-89 of the Nikitsky Botanical Gardens’ breeding is a pollinator for hybrids of peach with common almond, characterized by male sterility. Valuable characters of David peach could be transferred to common peach and its cultivars as a result of natural hybridization due to their joint growth in the primary Chinese-Japanese genetic center. From wild ancestor, David peach common peach cultivars inherited such valuable characteristics as resistance to powdery mildew and leaf curl, dwarf growth of plants, shapes with decorative double flowers, white, pink and purple-red petals of the corolla campanulate and rose-like types of flower, male sterility, pollen fertility and the honey taste of the fruit.
IMPLEMENTASI NILAI-NILAI PERSATUAN PADA PELAKSANAAN UPACARA HARI RAYA GALUNGAN DALAM PERSPEKTIF BHINEKA TUNGGAL IKA DI DESA BAGOREJO KECAMATAN SRONO
Authors: Yogi Ari Purnami  , Bayu Indra Permana
Published: February 2020

Bangsa Indonesia sangatlah heterogen dan pluralis, yang bermacam-macam agama, suku, ras, budaya, adat istiadat dan ideologi yang berbeda-beda dari masing-masing agama, atau budaya bahkan suku tersebut. Keberadaan masyarakat di Desa Bagorejo dalam sosial keagamaan terjalin dengan harmonis. Pelaksanaan Hari Raya Galungan adalah sebagai momentum bagi umat Hindu untuk menunjukan kebersamaan dalam pelaksanaan keagamaan. Kehidupan sehari-hari masyarakat di Desa Bagorejo hidup berdampingan sebagai wujud dari keharmonisan dalam beragama. Sosial relegius masyarakat di Desa Bagorejo, menunjukan eksistensi kebhinekaan yang sangat beradab.Penelitian ini bertujuan untuk mengetahui 1).Bagaimanakah konsep keberagamaan di Desa Bagorejo dalam pelaksanaan Hari Raya Galungan Perspektif Bhineka Tunggal Ika.2).Implementasi apa saja yang dilakukan umat Hindu di Desa Bagorejo Kecamatan Srono dalam mewujudkan sikap ke-Bhinekaan pada saat Hari Raya Galungan.3).Bagaimanakah perspektif Upacara Hari Raya Galungan di pandang dari Bhineka Tunggal Ika.

Jenis penelitian ini menggunakan metode kualitatif dengan pendekatan phenomologis dengan jumlah responden sebanyak 10 orang.Analisa data menggunakan deskriktif kualitatif.Hasil penelitian Implentasi yang terapkan umat Hindu dalam memujudkan sikap Bhineka Tunggal Ika adalah memahami dan melaksanakan konsep dan paham multikulturalisme dalam setiap perbedaanKonsep multikultur ini diterapkan dimasyarakat Desa Bagorejo, karena masyarakat Desa Bagorejo sangat pluralis dan heterogen. Kerukunan umat beragama di Desa Bagorejo menjadi contoh dan panutan bagi masyarakat luas. Kerukunan antar umat beragama di Desa Bagorejo dapat dilaksanakan dengan baik.
SOCIO-PHILOSOPHICAL ANALYSIS ON THE TASK OF BIOSPHERA AND HUMAN UNITY
Authors: Abdulatif Abidjanovich Abdumalikov , Erkinoy Anvarovna Abdumalikova
Published: February 2020

Today, continuing and evolving human society strives to absorb the whole globe for its own needs, and as a result, it causes to the natural processes of the globe, the processes of the natural self-renewal of the globe and natural development and restoration of the earth. As a result, the biosphere process has to relinquish its place to the non-atmosphere, a form of human development that is the product of human thinking. This is a process that can have devastating consequences for nature. Nowadays, these and similar problems are the most urgent for all mankind
KEW WORDS: biosphere, harmony of nature and society, nature and human thinking, global problems, noosphere.
Cooperative Colorings of Trees and of Bipartite Graphs
Authors: Aharoni Ron , Berger Eli , Chudnovsky Maria , Havet Frédéric , Jiang Zilin
Published: February 2020

Given a system $(G_1, \ldots ,G_m)$ of graphs on the same vertex set $V$, a cooperative coloring is a choice of vertex sets $I_1, \ldots ,I_m$, such that $I_j$ is independent in $G_j$ and $\bigcup_{j=1}^{m}I_j = V$. For a class $\mathcal{G}$ of graphs, let $m_{\mathcal{G}}(d)$ be the minimal $m$ such that every $m$ graphs from $\mathcal{G}$ with maximum degree $d$ have a cooperative coloring. We prove that $\Omega(\log\log d) \le m_\mathcal{T}(d) \le O(\log d)$ and $\Omega(\log d)\le m_\mathcal{B}(d) \le O(d/\log d)$, where $\mathcal{T}$ is the class of trees and $\mathcal{B}$ is the class of bipartite graphs.
Application of social media in the education of the general surgeon. @Cirbosque, breaking the paradigm
Authors: Cabrera Vargas LF , Herrera G , Mendoza Zuchini A , Pedraza M , Sánchez S , Pulido J
Published: February 2020

En el campo de la medicina las redes sociales han ganado poco a poco terreno y hoy en día juegan un rol importante en el aprendizaje y la enseñanza de conocimientos que se pueden trasmitir de inmediato y de forma masiva. El objetivo de este artículo es mostrar la experiencia colombiana en el uso de las redes sociales para crear aprendizaje quirúrgico significativo, con liderazgo y tutoría global. Se llevó a cabo un estudio descriptivo retrospectivo desde la creación de nuestras redes sociales en Twitter, 22 de febrero al 22 de agosto de 2019, evaluando las siguientes variables: número de tweets académicos, número de seguidores, impresiones, visitas y menciones. Desde la creación de nuestra red social Twitter @Cirbosque para realizar educación virtual quirúrgica a través de redes sociales con el fin de generar un aprendizaje significativo en nuestros seguidores, en solo seis meses del proyecto, seguimos a 62 cuentas, hemos realizado hasta la fecha 5.025 tweets académicos, con un crecimiento del 77,1% mensual, con 2.203 seguidores, con un crecimiento del 426 seguidores mensual, 1.090.000 impresiones, con un crecimiento del 56% mensual, 13.500 mil visitas, con un crecimiento del 28,9% mensual y 2.028 menciones, con un crecimiento del 88,3% mensual.

Aunque la evidencia aún es insuficiente para garantizar que la educación que se hace a través de redes sociales y de @Cirbosque sea eficiente, el impacto que ha tenido esta iniciativa en Twitter es apreciada por muchos cirujanos a nivel mundial incluyendo a grandes maestros referentes en cada uno de los temas que se han tratado, de la misma forma, la cantidad de participantes en las diversas discusiones planteadas día a día y con un incremento en todos los indicadores de impacto según Twitter Analytics, se puede deducir que el mensaje educativo está teniendo un efecto positivo y está llegando a miles de personas a nivel mundial.
El debate epistemológico entre investigación cuantitativa y cualitativa a partir de la oposición paradigmática entre modernidad y postmodernidad
Authors: Aranda Fraga Fernando , Grajales Guerra Tevni
Published: February 2020

A través de la historia de la humanidad, y específicamente de la historia de la educación, desde que existen la filosofía y las ciencias, se ha dado en el mundo un debate acerca del modo más apropiado de encarar la realidad para su estudio. Se trata de la confrontación metodológica entre cuantitativistas y cualitativistas. La oposición ya existió en la época de oro de la filosofía griega, particularmente entre las concepciones de la ciencia de Platón y de Aristóteles, pero será a partir de la Modernidad, con el auge que adquiere el método científico, cuando la metodología adquiere mayoría de edad en el campo del saber. Por entonces resurge con toda su fuerza el cuantitativismo, basado en el modelo matemático y en una concepción mecanicista y atomista de la realidad. La postmodernidad, ya en nuestro siglo, y a partir del fracaso del proyecto moderno, se opondrá enfáticamente a esta forma de comprender la realidad y de encarar su estudio. Aparece en la escena científica, entonces, con toda su fuerza, el clamor de los cultores del cualitativismo.
Isotherm and Kinetic Models for Bio-sorption of Cadmium Ions from Aqueous Solutions using Dry Peanut Shells and Hazelnut Shells
Authors: Kamar Firas Hashim , Abbas Salman H. , Mohammed Asem Hassan , Craciun Mihaela Emanuela , Nechifor Aurelia Cristina
Published: February 2020

This work is aiming to investigate the removal Cd(II) ions from the aqueous solution using two types of biosorbent materials: peanut shells (PS) and hazelnut shells (HS). The effect of several variables on the batch bio-sorption was studied. The process was carried out at room temperature, shacking speed 200 rpm and using fixed adsorbent diameters of 0.75 mm. The highest removal efficiency of Cd(II) ions onto PS was 91.45% in the best conditions (pH=3, initial concentration of Cd(II) ions 50 mg/ L, amount adsorbent was 0.75 g, contact time was 120 min), while the highest removal efficiency when using HS was 85.62% at pH= 4, and contact time of 160 minutes using the same initial concentration of Cd(II) ions as well as the same amount of absorbent material. Isotherm was studied for bio-sorption of Cd(II) ions using these two adsorbents, and the pseudo- first and second order models were used to study bio-sorption kinetics. The results of the infrared spectroscopy (FTIR) of (PS) and (HS) samples before and after loading for Cd(II) ions showed that hydroxyl and carboxyl groups play a major role in bio-sorption of these ions.
Effects of Long Term Application of Organic and Mineral Fertilizers on Soil Enzymes
Authors: Samuel Alina Dora , Bungau Simona , Tit Delia Mirela , Melinte (Frunzulica) Carmen Elena , Purza Lavinia , Badea Gabriela Elena
Published: February 2020

Long term productivity and conservation of soils is critical for sustaining agricultural ecosystems. The specific objective of the work reported was to determine the effects of long term application of organic and mineral fertilizers on soil enzyme activity as an index of soil biology and biochemistry. Three key soil enzymes involved in intracellular metabolism of microorganisms and two soil enzymes involved in phosphorus metabolism were selected. Actual and potential dehydrogenase, catalase, acid and alkaline phosphatase activities were determined in the 0-20 cm layer of an eroded soil submitted to a complex fertilization experiment. Results showed that addition of mineral fertilizers to organic (green manure and farmyard manure) fertilizers led to a significant increase in each activity because of increased plant biomass production which upon incorporation stimulates soil biological activity. The enzymatic indicators of soil quality calculated from the values of enzymatic activities depending on the kind of fertilizers showed that by the determination of enzymatic activities valuable information can be obtained regarding fertility status of soils. A weak positive correlation between enzymatic indicators of soil quality and maize yield was established. The yield data demonstrate the superiority of farmyard manure which provided greater stability in crop production. Substantial improvement in soil biological activity due to application of organic fertilizers with mineral fertilizers contribute in maintaining the productivity and soil health.
Synthesis, Characterization and Antioxidant Activity of Cooper-Quercetin Complex and Iron-Quercetin Complex
Authors: Trifunschi Svetlana , Munteanu Melania Florina
Published: February 2020

Complexes of cooper (II) and iron (II) with flavonoid quercetin have been synthesized. The structure of compounds has been confirmed by means of UV-Vis and FTIR spectroscopic techniques. The antioxidant activity of the flavonoid complexes has been evaluated by using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method. These complexes of flavonoids are much more effective free radical scavengers than the free flavonoids, an aspect which recommends them for further studies on possible therapeutic applications.
Is There a Relationship Between Obesity and Periodontal Diseases?
Authors: Ormenisan Alina , Balmos Alexandra , Golu Mihai Vlad , Bereczki Temistocle Despina , Baldean Alina , Tegla Emanuela , Torok Arpad , Beresescu Gabriela
Published: February 2020

Obesity, a common metabolic disorder, is a condition for the development of chronic diseases, such as hypertension, diabetes mellitus, cardiovascular and cerebrovascular diseases. The present study evaluates the prevalence of periodontal diseases in Romania and their association with obesity, as a risk factor. This cross-sectional study included 170 subjects aged between 18-65, with healthy periodontal status, gingivitis, aggressive periodontitis and chronic periodontitis. All subjects completed the questionnaire with independent variables: age, education, socio-economic status, oral hygiene habits, smoking habit, the presence of any systemic diseases. Periodontal examination included: plaque index, gingival index, probing depth, clinical attachment level. Body mass index (BMI) and waist circumference (WC) were measured. Statistically significant correlations were found between periodontal diseases and BMI and WC: according to BMI 30.5% were obese, and 42.5% had high WC. 51.9% of obese participants had chronic periodontitis. Gingivitis and initial periodontitis do not influence BMI and WC, only the chronic periodontitis remained significantly associated with obesity. Our study suggests that there is an association between chronic periodontitis and BMI- defined obesity or WC, but further prospective studies should be carried on to establish the extent of it. The prevention and management of obesity may represent an approach to control periodontal health. Our study evaluates the prevalence of periodontal diseases in Romania and their association with obesity, as a risk factor.
Variability in Colour Reproduction of Metal-Ceramic Crowns
Authors: Oancea Luminita , Petre Alexandru , Burlibasa Mihai , Eftimie Totu Eugenia , Cristache Corina Marilena
Published: February 2020

The aim of the present study was to objectively assess the variability in color reproduction of metal-ceramic (MC) single crowns fabricated by blending different color of opaque and body ceramic in order to point out which shade of the ceramic layers influences mostly the final color of the restorations. Eight nickel-chromium ceramic metal alloy copings were fabricated, on the same cast, following by blending the ceramic for the specific A3 color as follows: one reference ceramic (R) was blended, according to the producer s recommendation, and seven tests crowns have been build-up by considering as variables each one of the two uniform opaque layers, and dentin layer. Color of each manufactured crowns was measured after the three important steps of the technological workflow: the last opaque layer, enamel-dentin correction and final glaze firing using Vita Easyshade spectrophotometer. The best final color match (color difference of deltaE=0.8) was obtained for specimen no. 5, with a lighter opaque firs layer (A1). Fabricated specimens of all groups, except for no.4, with a darker dentin layer (A 3.5), showed deltaE values between 0.8 and 2.8, in the limit of the threshold perception in the oral cavity, and were scored as good. Within the limits of the present study, we can conclude that the dentin-enamel layer mostly influences the final color of the MC crowns.
The Importance of the Chemical Composition of Synthetic Nets Used in Repair of Parietal Deffects
Authors: Tenea Cojan Tiberiu Stefanita , Radu Lucretiu , Davitoiu Dragos , Vladu Ionela Mihaela , Baleanu Vlad Dumitru , Clenciu Diana , Ene Cristina Gabriela , Socea Bogdan
Published: February 2020

Postoperative eventration is a pathology whose treatment is exclusively surgical, and is one of the most frequent interventions in general surgery along with other abdominal parietal defects. In large part, in the occurrence of postoperative eventrations, in addition to the local and general factors associated with the patients, the incision, the technique of wound closure, made during the previous intervention and the materials that are used have a special involvement.
Chemical Aspects of Peritumoral Cerebral Edema in Atypical Meningiomas
Authors: Cucu Andrei Ionut , Turliuc Mihaela Dana , Carauleanu Alexandru , Poeata Ion , Costea Claudia Florida , Dumitrescu Gabriela Florenta , Sava Anca
Published: February 2020

Aim of this study was to perform a retrospective evaluation of the radiological, clinical and pathological features influencing the occurrence of peritumoral brain edema (PBE) and understanding the responsible chemical mediators involved. We have examined magnetic resonance imaging(MRI), symptoms and pathology for 25 patients with convexity atypical meningiomas (WHO grade II), who underwent surgery at Professor Dr. N. Oblu Emergency Clinical Hospital between 2010 and 2017. We evaluated the possible prognostic factors related to peritumoral edema including: demography (age, gender), pathology (anatomical localization of the tumor, tumor volume, brain invasion, shape of tumor margin), symptoms and neuroimaging characteristics such as high signal intensity of the tumor on T2-weighted images (T2WI), contrast enhancement and heterogeneity. Age, gender, anatomical location of the tumor and brain invasion were not correlated with peritumoral edema. Also, the neuroimaging characteristics (homogeneity, high signal intensity on T2WI, high contrast enhancement) or the presence of motor deficit were not statistically significant regarding the relationship with the edema. Peritumoral edema and irregular tumor margins were statistically significantly (p=0.03). Tumor volume was not associated with the peritumoral edema. We also found other significant statistical correlations of the radiological features, which are worth mentioning: high-contrast enhancement with the age of the patient (p=0.006), high signal intensity on T2WI with tumor volume (p=0.03) and tumor heterogeneity with irregular tumor margins (p=0.002). The results of this study demonstrate that an irregular tumor margin may be an important predictive factor that would influence the occurrence of peritumoral edema in atypical meningiomas.
Formulation and Preparation of Pharmaceuticals with Anti-rheumatic Effect Using the Active Principles of Capsicum Annuum and Piper Nigrum
Authors: Dumitriu Buzia Olimpia , Mardare Nela , Florea Alexandra , Diaconu Camelia , Dinica Rodica Mihaela , Tatu Alin Laurentiu
Published: February 2020

The present paper aims at obtaining two pharmaceutical formulas based on two active principles extracted from two plants well-known for their contents of capsaicin and piperine, respectively, Capsicum Annuum and Piper Nigrum. After the extraction of the active principles, we pursued their identification using chromatographic and spectrophotometric methods. Subsequently, we produced two pharmaceutical formulas, an ointment and a cream, in view of using them in rheumatic diseases as anti-inflammatory medicine.
Oral Tumors Having the Origins in Multiple Tissues, Non-differentiated or Differentiated
Authors: Constantin Mihai , Agop Forna Doriana , Budacu Cristian , Caraiane Aureliana , Raftu Gheorghe , Forna Norina Consuela
Published: February 2020

The lesions in the oral cavity must be seen in the light of pathological and correlated system processeswith systemic illnesses because systemic illnesses cause oral manifestations and inversely - oral affections(Alvin Gardner). Many times, when symptoms and signs occur, the disease is in an advanced phase, the interest of the oral cavity being the expression of a generalized illness. Extremely varied tumors in shape and evolution come from multiple tissues undifferentiated or differentiated, often in a complication of different structures, which imparts to them a histological polymorphism. They can be found and traced in their evolution during a dental examination, more easily than those developed at the organs. An early detection of precancerous states and neoplasia can be made, and clinical and paraclinical data are corroborated in the dynamics of the evolutionary process, with the observation that, in the presence of benign histological aspects, evolution may be serious due to functional turbulence lymphangioma of the tongue with muscle fiber atrophy, epithelial ulceration and superadded inflammation with oral phlegmon), haemorrhages (oral mucosal hemangioma). We studied 120 patients with oral tumors originating in multiple non-differentiated tissues or differentiated, over a 5-year period, January 2012-December 2016. Malignant ganglion involvement includes a broad pathology requiring rigorous, clinical, paraclinical, histological and immunohistochemical examination to achieve effective therapeutic management. The degree of malignancy should be specified in all cases where this is possible with the help of available systems as it is of prognostic and predictive importance.
LC-High-resolution MS Analysis of the Designer Drugs Methylenedioxy-Pyrovalerone (MDPV) and Methylenedioxy-alpha- pyrolidinobutyrophenone (MDPBP) and Their Main Metabolites in Human Urine
Authors: Moraru Monica , Chitescu Carmen Lidia , Nechita Aurel , Macovei Luana Andreea , Fulga Iuliu
Published: February 2020

In the present work, LC- Q ExactiveOrbitrap high resolution MS techique in both full-scan MS and targeted MS/MS modes was applied to identify psychoactive substances in human urine samples. Methylenedioxy-pyrovalerone (MDPV), methylenedioxy-alpha-pyrrolidino-butyrophenone(MDPBP) and the main metabolites of both compounds were identified. The preliminary full-scan screening was folowed by targeted ion fragmentation (t-MS2) enabling confirmatory analysis and mass spectral characterization. The presented case is the first confirmation of MDPBP abuse in Romania supported by the toxicological identification of the parent compound and the main metabolites in human urine.
Environmental Impact Matrix for Bucharest, Romania
Authors: Rusanescu Marin , Rusanescu Carmen Otilia
Published: February 2020

The objective of this study was to provide an environmental impact assessment for the municipality of Bucharest. To touch this objective, air samples were taken from five monitoring stations and water from two rivers during 2007-2015. On the basis of all the information collected, the environmental impact assessment was carried out with the help of the Rapid Impact Assessment Matrix. Considering the surroundings of all monitoring stations, the air quality at which the inhabitants of Bucharest are exposed can be considered good. The Rapid Impact Assessment Matrix (RIAM) is a tool for analyzing, organizing and presenting the results of a holistic environmental impact assessment and ensuring a transparent and permanent record of the analysis process, organizing the environmental impact assessment procedure, which leads to a considerable reduction in the type of environmental impact assessment. The simple, structured form of the matrix allows for rapid and accurate in-depth reconstruction and analysis of selected components. This flexibility makes the method a powerful tool both for making and evaluating environmental impacts.The matrix has the ability to perform series of operations to compare variants; is able to compare assessments made in different sectors. The evaluation steps contained in the matrix allow for both quantitative and qualitative data to be evaluated.
Method and Electrochemical Biosensor for Detection of Copper in Wine
Authors: Norocel Liliana , Gutt Gheorghe
Published: February 2020

The developed biosensor is based on the electrochemical signal of the complex formed between the ligand used (glycine) and copper(II) ions. The developed electrochemical method is quick, inexpensive, easy to apply, and has shown good selectivity for copper ions. In this research, a linear response for copper ions was obtained in the concentration range of 0.2 mg to 1 mg/L, which largely covers the area of copper ion concentrations in wine. The achieved sensitivity was 11.05E-05 and the limit of detection (LOD) was 0.041 ppm. The biosensor with screen printed electrodes has been successfully used to detect copper ions in wine. A comparative study between the developed portable biosensor and ICP-MS analysis results of the same samples showed similar results.
The Influence of Some Synthesis Compounds on Healthy and Tumoral Oral Cell Lines: PGK, HGF and SCC4
Authors: Susan Razvan , Corlan Ion Virgil , Berceanu Vaduva Delia , Popovici Ramona , Radulescu Matilda , Susan Monica , Faur Alin , Cheveresan Adelina
Published: February 2020

This present study aimed to assess the influence of different chemical compounds which are commonly found in the composition of products used for oral hygiene on primary gingival keratinocyte, human gingival fibroblast and tongue squamous cell carcinoma behaviour. Chlorhexidine (Chx), aspartame (Asp), xylitol (Xyl) and sodium bicarbonate (NaB) were evaluated in an in vitroresearch regarding cells morphology and cytotoxicity. Primary gingival keratinocytes (PGK)and fibroblasts (HGF)treated with different concentration of the tested compounds did not show significant changes, nor related to morphology nor related to viability at the lowest concentrations used ([ 25�M). In contrast, the tumor cells were affected by the test compounds, especially xylitol and sodium bicarbonate, both in terms of morphology and cytotoxicity, at concentrations over 5�M.
Nutritional Intervention in Patients with Diabetic Renal Diseasee. A brief presentation
Authors: Balan Daniela Gabriela , Balcangiu Stroescu Andra Elena , Tanasescu Maria Daniela , Diaconescu Alexandru , Raducu Laura , Mihai Andrada , Tanase Mihaela , Stanescu Iulia Ioana , Ionescu Dorin
Published: February 2020

Clinical nutrition represents one of the main tools the clinician has to help prevent, control and in some cases, treat different diseases. In this context, diabetes mellitus is a disorder for which the nutrition plan is one of major importance, both in preventing the disease, as well as in its evolution. Thus, the complications that can occur during its progression represent one of the major stimuli to adjust the non-pharmacological treatment (the diet). In the initial stages of the disease, daily intake of carbohydrates monitoring and weight control of the patient are mandatory. Subsequently, the development of diabetic renal disease and diabetic nephropathy are important arguments in favor of daily protein intake adjustment in these patients.
Surface Properties and Maximum Insertion Energy of Sterilized Orthodontic Mini-Implants with Different Chemical Materials
Authors: Pop Silvia Izabella , Chiorean Radu , Bratu Dana Cristina , Pacurar Mariana , Merie Violeta , Manuc Daniela , Bechir Edwin Sever , Teodorescu Elina , Tarmure Viorica , Dudescu Mircea
Published: February 2020

The main objective of the present study was to evaluate the maximum insertion energy and the surface topography of the Yes Anchor (Orlus TM) orthodontic mini-implants subject to various cleaning and sterilization procedures. A total of 50 orthodontic mini-implants divided in 5 groups were subjected to testing. The only one significant difference (p = 0.04) of the maximum insertion energy was observed between groups YA1 and YA3.
Evaluation of the Bioavailability and Pollution Indexes of Some Toxic Metals in Polluted Soils from an Abandoned Mining Area
Authors: Dinu Cristina , Ungureanu Eleonora Mihaela , Vasile Gabriela Geanina , Kim Lidia , Pascu Luoana Florentina , Simion Marius
Published: February 2020

The paper presents soil quality assessment using pollution and bioavailability indexes in order to highlight possible pollution generated by a decommissioned mining area in Certej, Deva County, Romania. Metals such as Cd, Cr, Cu, Ni, Pb and Zn were analyzed in pseudo-total and mobile form and the results were correlated with the content found in the vegetation collected from the same points during a previous study. The research shows a high mobility for Ni, Pb and Zn, respectively, a moderate mobility for Cd.
An Easy Way to Detect Cardiovascular Risk
Authors: Vladu Ionela Mihaela , Radu Lucretiu , Girgavu Sigina Rodica , Baleanu Vlad , Clenciu Diana , Ene Cristina Gabriela , Socea Bogdan , Mazen Elfarra , Cristea Oana Mariana , Mota Maria , Tenea Cojan tiberiu Stefnita
Published: February 2020

Cardiovascular risk means the degree of risk for atherosclerotic cardiovascular pathology, predictable by quantifying the risk factors (RF) existing in each individual. Global cardio-metabolic risk is the overall risk of developing type 2 diabetes mellitus (T2DM) and/or CVD, including myocardial infarction (MI) and stroke, which is due to a bundle of risk factors. The cardio-metabolic risk is based on the concept of continuous risk. The importance of cardiovascular / cardio-metabolic risk is particular because controlling its components may affect atherogenesis and its clinical consequences: chronic ischemic heart disease, cerebrovascular disease and peripheral arteriopathy, but also diabetes mellitus (DM). Currently there is no method to use all the known risk cardio-metabolic factors to quantify cardiovascular risk or diabetes risk.