bluuebunny/crossref_metadata_2025 huggingface dataset:
Влияние конструкции эпитаксиальной структуры и параметров роста на характеристики метаморфных лазеров оптического диапазона 1.46 мкм на основе квантовых точек на положках GaAs
Authors: Максимов М.В. , Надточий А.М. , Шерняков Ю.М. , Паюсов А.С. , Васильев А.П. , Устинов В.М. , Сeрин А.А. , Гордеев Н.Ю. , Жуков А.Е.
Published: September 2018

AbstractThe characteristics of lasers of the 1.44–1.46-μm optical range grown on GaAs substrates using a metamorphic buffer are studied. The active region of the laser contains 10 rows of InAs/In_0.4Ga_0.6As/In_0.2Ga_0.8As quantum dots. It is shown that the use of special selective high-temperature annealing along with the application of short-period In_0.2Ga_0.8As/In_0.2Al_0.3Ga_0.5As short-period superlattices makes it possible to substantially decrease the density of threading dislocations in the active region. A threshold current density of 1300 A cm^–2, external differential quantum efficiency of 38%, and maximal pulsed-mode output power of 13 W are attained for a laser with a broad area 3 mm in length.
Магнитный фазовый переход в MnSi на основе LSDA+U +SO-расчетов электронной структуры и спин-флуктуационной теории
Authors: Волков А.Г. , Ноговицына Т.А. , Повзнер А.А. , Нуретдинов Т.М.
Published: September 2018

AbstractSpin states appearing near the magnetic phase transition in helicoidal ferromagnet MnSi are studied on the basis of the spin-fluctuation theory and the LSDA + U + SO calculations of the electronic structure. The temperature dependence of the uniform magnetic susceptibility is calculated near the magnetic phase transition temperature, and the result agrees well with the experiment. Spin correlators corresponding to various solutions of the equation of magnetic state are determined in the region of the magnetic phase transition expanded in temperature. It is shown that, in this region, a helicoidal short-range order appears in the form of the superposition of left and right spin spirals with stochastic weight coefficients. It is shown that the magnetic susceptibility divergences on the helicoid wave vector at the temperature of disappearance of local magnetization and during the transition to the paramagnetic state.
Теплоемкость легированного эрбием галлий-гадолиниевого граната
Authors: Лезова И.Е. , Шевченко E.В. , Чарная E.В. , Хазанов E.Н. , Таранов A.В.
Published: September 2018

AbstractIn this paper, we compared the results of a heat capacity study of an erbium-doped gallium gadolinium garnet crystal with data for an undoped garnet. The measurements were carried out in the temperature range from 1.9 to 220 K and in magnetic fields from 0 to 9 T. The temperature dependences of the specific heat were interpreted with allowance for the Schottky contributions due to the Gd^3+ and Er^3+ ions and the contributions of the thermal vibrations of the crystal lattice. The values of entropy and magnetic entropy are calculated.
Интерференция нейтронных волн при малоугловом рассеянии на ферромагнитных сплавах
Authors: Ковалев А.В.
Published: September 2018

AbstractThe detection conditions and features of direct and scattered neutron wave interference are studied on magnetized Co_67Fe_31V_2 alloy slabs. The angular intensity distributions of neutrons passed through a sample are measured for the opposite polarization directions of the initial neutron beam. The sought-for effect that is induced by the magnetic scattering on crystal structure irregularities in specimens manifest itself by different areas of peaks “without neutron spin flip.” The ratio of these areas depends on the thermal treatment mode, sample thickness and strength of the magnetic field applied to the sample. The peaks “with neutron spin flip” are due to the mechanism of neutron wave passage through magnetononcollinear boundaries. The methods for experimental data acquisition and processing are reported as well.
Импульсное перемагничивание антиферромагнитных наночастиц ферригидрита
Authors: Балаев Д.А. , Красиков А.А. , Великанов Д.А. , Попков С.И. , Дубынин Н.В. , Столяр С.В. , Ладыгина В.П. , Ярославцев Р.Н.
Published: September 2018

AbstractThe dynamic magnetization switching of ferrihydrite nanoparticles has been investigated by a pulsed magnetometer technique in maximum fields H _max of up to 130 kOe with pulse lengths of 4, 8, and 16 ms. Ferrihydrite exhibits antiferromagnetic ordering and defects cause the uncompensated magnetic moment in nanoparticles; therefore, the behavior typical of magnetic nanoparticles is observed. The dynamic hysteresis loops measured under the above-mentioned conditions show that the use of pulsed fields significantly broadens the temperature region of existence of the magnetic hysteresis and the coercivity can be governed by varying the maximum field and pulse length. This behavior is resulted from the relaxation effects typical of conventional ferro- and ferrimagnetic nanoparticles and the features typical of antiferromagnetic nanoparticles.
Новая тригональная (ромбоэдрическая) фаза SiC: ab initio расчеты, симметрийный анализ и рамановские спектры
Authors: Китаев Ю.Э. , Кукушкин С.А. , Осипов А.В. , Редьков А.В.
Published: September 2018

AbstractA new trigonal (rhombohedral) SiC phase, existence of which was previously theoretically predicted by a symmetry analysis, is studied. It is shown that the phase can be formed during the growth of SiC films by the method of substitution of atoms on the surface of a Si substrate. Ab initio calculations of the crystal structure of a new phase and its Raman spectra are performed by the quantum chemistry method. The difference of the selection rules for the Raman active vibrations for this rhombohedral phase from the selection rules for a cubic phase in the coordinate system aligned with the translation vectors of the rhombohedral phase is established. Series of thin SiC/Si films by annealing time are synthesized by the method of the topochemical substitution of atoms, and their Raman spectra are analyzed. The presence of the spectral line (258 cm^–1), that is close to the line of a new trigonal (rhombohedral) phase calculated by the ab initio method, has been found in the Raman spectra of the samples at the initial stage of the growth of a SiC film, which indirectly confirms its existence.
Атомная и электронная структура поверхности 3C-SiC(111)-(2sqrt(3)sqrt
Authors: Бекенев В.Л. , Зубкова С.М.
Published: September 2018

AbstractThe theoretical studies and ab initio calculations have been carried out for the first time for atomic and electronic structure of four variants of 3 C -SiC(111)-( $$2\sqrt 3 \times 2\sqrt 3 $$ 2 3 × 2 3 )- R 30° surface with Si- terminated surface: initial, relaxed, reconstructed, and relaxed after reconstruction. The surface was simulated in the layered superlattice approximation by a system of thin films (slabs) with a thickness of 12 atomic layers separated by vacuum gaps of ~16 Å. In order to close the dangling carbon bonds, the opposite side of the film was complemented with 12 atoms of hydrogen. Ab initio calculations were performed by means of QUANTUM ESPRESSO program based on the density functional theory. It is shown that the reconstruction makes the atomic layers split. Our previous works and experimental data show that these splits are observed at reconstructions of surface (111) in crystals with the sphalerite structure. The band structures of four alternative slabs are calculated and analyzed. Total and layer-by-layer valence electron state densities are calculated for four top layers. It is shown that the real surface has a metallic conductivity.
Начальные стадии роста пленок цирконата-титаната бария и станната-титаната бария на монокристаллических подложках сапфира и карбида кремния
Authors: Тумаркин А.В. , Злыгостов М.В. , Серенков И.Т. , Сахаров В.И. , Афросимов В.В. , Одинец А.А.
Published: September 2018

AbstractThe initial stages of growth of barium zirconate titanate and barium stannate titanate ferroelectric films on single-crystal sapphire and silicon carbide are studied for the first time. The choice of substrates is dictated by the possibility of using such structures in ultra-high frequency devices. The growth of discontinuous BaZr_ x Ti_1– x O_3 films is found to be mediated by the gas phase mass transport mechanism in the studied temperature range. For deposition of BaSn_ x Ti_1– x O_3 films, the mechanism of mass transport switches at ~800°C from surface diffusion to gas phase diffusion; also, the films deposited on sapphire and silicon carbide have considerably different elemental composition. The formation of an intermediate SiO_2 layer is noted on silicon carbide during the growth of oxide films on this substrate, its thickness depending on the deposition temperature.
Структура пленок кремнийзамещенного политрициклононена по данным малоуглового рассеяния нейтронов
Authors: Лебедев B.T. , Евлампиева H.П. , Бермешев M.B. , Сжогина A.A.
Published: September 2018

AbstractPolytricyclononenes are new polymers having high permeability values not only for atmospheric gases, but also gaseous hydrocarbons. Thin films (≤100 μm) used in gas-separation membrane technologies are necessary to be studied to improve the gas transport properties of these polymers. The structure of polytricyclononene films with two vicinal side substituents Si(CH_3)_3 in a monomer unit synthesized via additive polymerization scheme is studied in this work by a small-angle neutron scattering method. As a whole, the amorphous film has a local orientation order due to chain fragments with spiral conformation. The size of the ordered regions is comparable to the length of units correlations in the polymer chain (Kuhn segment) and is 8–9 nm. Free volume and type of voids (pores) formed in the polymer film due to inhomogeneous packing are also found.
Новые оксидные покрытия на монокристаллическом сапфире и спеченной керамике
Authors: Гурин В.Н. , Крымов В.М. , Шпейзман В.В. , Синани А.Б. , Киреенко М.Ф. , Аверкин А.И. , Деркаченко Л.И.
Published: September 2018

AbstractThe formation of the protective and hardening oxide coatings on the surface of the single-crystal sapphire and sintered corundum (ceramics) is studied. Corundum systems with oxide coatings are as yet unknown and our studies are original. The compositions of the coating based on the mixture of Al_2O_3 and B_2O_3 oxides and a technique of their deposition on the samples are worked out. The strength of the samples during the bending test is studied. It is shown that the hardening of several samples achieves ~30% and microhardness (HV) reaches 30 GPa. Basing on the results of an investigation of the significant number of the samples obtained under different conditions, it is concluded that the developed method of the protection and hardening of the corundum products is promising.
Измерение количества вещества, испаряемого с поверхности вязкой диэлектрической жидкости при наносекундном барьерном разряде
Authors: Данченко Н.Г. , Дубинов А.Е. , Кожаева Ю.П.
Published: September 2018

AbstractThe amount of substance evaporated from the surface of a viscous dielectric liquid during nanosecond barrier discharge has been measured for the first time using a method based on the creation of a gas microbubble in the volume of liquid and subsequent generation of discharge in the bubble. By measuring increase in the bubble radius during discharge, it is possible to determine the amount of substance evaporated from the microbubble walls. It is established that millijoule energy deposition in discharge leads to the evaporation of several nanomoles of substance, and this amount grows with the deposited electric energy.
Лазерно-интерференционная система детектирования гравитационных волн
Authors: Долгих Г.И.
Published: September 2018

AbstractNew principles of a gravitational wave detection system based on the use of pendulum-type laser strainmeters (LSMs) spaced by a large distance are discussed. By arranging three pendulum-type LSMs with 1000-m arm lengths on 316-km sides of equilateral triangle, it is possible to provide for the threshold sensitivity of this system within up to the 23rd decimal point in a frequency interval from 3 to 950 Hz for detecting extraterrestrial signals propagating at the speed of light.
Рост перегревных неустойчивостей в метастабильном металле
Authors: Орешкин В.И.
Published: September 2018

AbstractThe development of thermal (overheat) instabilities during the electric explosion of a conducting wire has been analyzed using the theory of small perturbations. At the initial stage of electric explosion (upon melting of the metal), the substance can occur in three phases: liquid, two-phase state (liquid + vapor), and metastable metal liquid (overheated liquid). Comparative analysis of the growth of overheat instabilities is performed as dependent on the phase in which the metal can occur. It is shown that, from the standpoint of development of overheat instability, the most unstable phase is the overheated metastable liquid.
Alexanderplatz: la arquitectura como herramienta del cambio social
Authors: Brunet Aina , Vila Sofía
Published: September 2018

El concurso de reestructuración de la Alexanderplatz, organizado en 1928, en Berlín, ejemplifica un movimiento histórico extraordinario, pues es el momento en que la arquitectura dejó de estar al servicio de un poder autoritario y se entregó a la experimentación de las vanguardias, a la crítica y a la provocación. A partir de este caso, el presente artículo pretende visibilizar la pluralidad proyectual y de debate que se abrió camino a través de los muchos concursos que caracterizaron los años veinte berlineses, y cuyas propuestas han tenido un impacto en las estrategias urbanísticas actuales.
Anhelos de identidad nacional. El pabellón de México en la feria mundial de Osaka 1970
Authors: Juárez Cruz Marco Polo
Published: September 2018

Este artículo se interesa en la arquitectura y museografía del pabellón de México en la feria mundial de Osaka, 1970. A partir de la conjunción del discurso del edificio, diseñado por Agustín Hernández y los murales encargados por Fernando Gamboa, se revisa la propuesta de identidad nacional presente en las políticas culturales del Estado mexicano. Estas acciones buscaban resaltar la herencia cultural y la innovación artística de este país dentro del contexto internacional de las ferias mundiales.
Disputas por el espacio público en la planeación neoliberal. La conquista ciudadana de Tempelhof
Authors: Bournazou Marcou Eftychia Danai
Published: September 2018

El triunfo de la voluntad ciudadana que, a través de la apropiación del viejo aeropuerto de Berlín Tempelhof, resistió a la presión inmobiliaria y logró con un referendo mantener íntegro el carácter público del lugar, abre un espacio de reflexión sobre los claroscuros de la planeación colaborativa neoliberal y la participación simulada, además ofrece lecciones y advertencias para el redesarrollo de los grandes baldíos intraurbanos de carácter público, asunto de gran relevancia para la ciudad actual.
Un viaje a las periferias salvajes de las grandes ciudades mexicanas
Authors: Brañas García Cecilia
Published: September 2018

Este es un breve y conciso viaje por la “urbanización salvaje” periférica. Este recorrido nos permitirá adentrarnos lo suficiente al tema como para tener una mirada crítica sobre el fenómeno urbanizador que se ha dado en los alrededores de las grandes ciudades mexicanas, entre los años 2000 y 2015, aproximadamente.
Lejos de lo que el título que encabeza este texto pueda sugerir a más de un lector, la urbanización salvaje a la que hacemos referencia1 tiene más que ver con la definición de capitalismo salvaje (o neoliberalismo), que con la condición “desordenada o no planificada” de la acción urbanizadora sobre el territorio. Para muestra, basta traer a la mente la imagen de cualquier fragmento de poblamiento popular2
-más comúnmente conocidos como asentamientos irregulares populares- de México, América Latina o del mundo, los cuales más allá del desorden representan el nuevo poblamiento neoliberal del siglo XXI
La arquitectura y el sector público: la imagen como narrativa en la arquitectura brasileña
Authors: Cotrim Marcio , Cortizo Aguiar Barbara , Lara Fernando Luiz
Published: September 2018

Este texto pretende revelar por medio de dos fotografías un conjunto de argumentos fundamentales sobre la arquitectura moderna brasileña que fueron forjados a partir de la segunda mitad de los años 1930 y se consolidaron en las décadas de 1940 y 1950. Estos argumentos pueden ser sintetizados aquí por la matriz Corbusiana (el prisma vertical), la pretensión de adaptación al clima local (con la utilización de celosías y de la cortina de vidrio), la convivencia con el pasado y el presente (yuxtaposición - fotográfica - entre edificios de tiempos distintos), y - lo que nos interesa más específicamente en este artículo, - la asociación con el Estado (vinculada a la función ejercida por el y / o el patrocinio del edificio). En la segunda parte, apoyado en otras imágenes se persigue en términos panorámicos las relaciones entre arquitectura y sector público.
Arco sin triunfo
Authors: Cárdenas del Moral Jorge
Published: September 2018

El arco como símbolo del triunfo tiene antecedentes en la Roma imperial. De origen militar, elogiaba la victoria de los ejércitos y saludaba el nombre de personajes influyentes: por ahí desfilarían los representantes de una versión del “triunfo.” A pesar de que han transcurrido cientos de años desde la celebración de aquellos rituales, hoy es posible encontrar esos vestigios en contextos cercanos. Si durante el Renacimiento y el siglo XIX se copiaron los motivos
de la arquitectura clásica para modelar la representación del poder, el siglo xx no fue ajeno al empleo de formas previas con la finalidad de cristalizar una idea de lo memorable.1
En Occidente, los regímenes totalitarios de los años treinta se caracterizaron por disponer de la arquitectura como instrumento ideológico, algo que Walter Benjamin identificó
en la “estetización de la política.”
Configuración del poder y fragilidad urbana
Authors: Filipe Narciso Carla
Published: September 2018

En los marcos geopolíticos de regulación y flexibilización de los mercados neoliberales, las estructuras urbanas se han vuelto imperativas para acumulación del capital, sin que eso a su vez genere una serie de contracciones socio-espaciales, ya que presupone la organización de la sociedad desde una
perspectiva espacial que permite fijar y controlar a los individuos, con el objetivo inmediato de “abrir nuevas oportunidades de mayores ganancias, para encontrar nuevas maneras de mantener el control social, y estimular los incrementos en la producción y el consumo”. Desde diferentes latitudes geográficas, gobiernos suman a sus sistemas de planeación distintas estrategias de corte neoliberal que han resultado en un modelo de desarrollo económico inequitativo, lo que se vuelve más evidente frente a determinados desastres “naturales.” Tal es el caso de los sismos, en específico el del 19 de septiembre de 2017 en la Ciudad de México, donde fue evidente cómo la reestructuración espacial derivada del momento político-económico actual ha establecido una fragmentación y segmentación socio-espacial. Esta división social es generada por procesos de control y regulación societal, que determinan espacios de exclusión y de poder, por ello los “más” marginados se tienen que ubicar en las zonas de mayor vulnerabilidad y riesgo social, pues no cuentan con los recursos para establecerse en la ciudad central, situación a la que se suma el incumplimiento de los reglamentos, las políticas y los programas, así como la corrupción.
Elaboration of nanostructured polyurethane foams/OMMT using a twin-screw extruder in counter-rotating mode
Authors: Mahmoud Yasmine , Safidine Zitouni , Zeghioud Hichem
Published: September 2018

In this work, a new elaboration method for nanostructured foam polyurethane/ organo-modified montmorillonite (PUR/OMMT) by in situ polymerization is proposed. A twin-screw extruder in the contra-rotation mode combined with reaction injection molding (RIM) as the polymerization process was used. The blended polyols, copolymer polyol (CPP) were included between the OMMT layers via the twin-screw extruder. Both the formulation of the PUR and the inter-foliar distance in the montmorillonite (MMT) were optimized. The effect of some parameters such as OMMT content and catalyst (triethylenediamine for PUR 3 and triethylenediamine+diamino-1,2 propane for PUR 4) was also investigated. The synthesized materials (OMMT, PUR and PUR/OMMT) were characterized by different methods, i.e., Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results of evaluation tests, such as flammability and the tensile for the PUR 3+OMMT foams revealed that the optimum properties were obtained for PUR 3+2 % OMMT. The PUR 4 foam showed better mechanical and flame- -retardant properties than the PUR 3 (r = ?NCO/?OH = 1.15) foam. However, the PUR 4 + 2 % OMMT formula exhibited the most delayed flame diffusion and pronounced rigidity.
Ab initio study of the mechanism of formation of a spiro-Sn-heterocyclic ring compound by the cycloaddition reaction of H2C=Sn: and ethylene
Authors: Tan Xiaojun , Lu Xiuhui
Published: September 2018

X2C=Sn: (X = H, Me, F, Cl, Br, Ph, Ar?) are new species of chemistry. The cycloaddition reactions of X2C=Sn: is a new study field of stannylene chemistry. The mechanism of cycloaddition reaction of singlet H2C=Sn: with ethylene is studied for the first time using the MP2/GENECP (C, H in 6-311++G**; Sn in LanL2dz) method in this paper. From the potential energy profile, it could be predicted that the reaction has one dominant reaction channel. The reaction rule presented is that the 5p unoccupied orbital of tin in H2C=Sn: sidewise overlaps with the bonding ? orbital of ethylene resulting in the formation of an intermediate. The instability of the intermediate makes it isomerise to a four-membered ring stannylene. As the 5p unoccupied orbital of the Sn atom in the four-membered ring stannylene and the ? orbital of ethylene form a ??p donor?acceptor bond, the four-membered ring stannylene further combines with ethylene to form another intermediate, and this intermediate further isomerises to a spiro-Sn-heterocyclic ring compound. The Sn in the spiro-Sn-heterocyclic ring compound is combined with adjacent atoms by sp3 hybridization. The results of this study reveal the mechanism of cycloaddition reaction of X2C=Sn: with symmetric ?-bond compounds.
Full-energy peak efficiency of asymmetrical polyhedron germanium detector
Authors: Abbas Mahmoud , Yoseph Sara , El-Khatib Ahmed , Badawi Mohamed , Gouda Mona , Thabet Abouzeid
Published: September 2018

To understand the nuclear structure for most elements, it is essential to
investigate the nuclear excitations by using high precision gamma-ray
spectroscopy in which intensive measurements should be carried out. This is
becoming a new challenge for the radiation scientific community nowadays,
where the instrumentations and technical advances must be developed to be
used in a wide range of applications. To discover the weakest nuclear
reaction, the maximum probability of the detection system of the total
energy of any released individual photon must be determined. In this work, a
new mathematical method to calculate the absolute full-energy peak
efficiency of asymmetrical polyhedron germanium detector is presented. This
type of detector can be arranged in array, forming ?complex detectors of
encapsulated germanium crystals?, with the solid angle reaching 82 % of
total solid angle coverage, i. e., with the highest possible efficiency and
with a good quality of spectral response. In addition, the photon path
length was enclosed in the mathematical method to determine its attenuation
through different materials such as, the detector active medium
and any other material in-between source-detector system during the
measuring process. The comparison between the efficiency calculated in this
work and that of the published Monte Carlo simulation showed a good
agreement and a small variation. However, the method discussed in the
current work can be useful in nuclear safeguards, in overcoming the huge
difficulties in identification of the energy range of radioactive isotopes
and their quantities in nuclear waste.
Natural radiation exposure and radon exhalation rate of building materials used in Turkey
Authors: Turhan Seref , Temirci Alper , Kurnaz Asli , Altikulac Aydan , Goren Elif , Karatasli Muhammet , Kirisik Rasit , Hancerliogullari Aybaba
Published: September 2018

Measuring the natural radioactivity levels and radon exhalation rates
(surface and mass) in building materials is essential to evaluate the extent
of radiation exposure (external and internal) for residents in dwellings.
Gamma-ray spectrometry with a high purity germanium detector was used to
measure the activity concentrations of 226Ra, 232Th, and 40K in some
building materials used in Turkey. Moreover, an active radon gas analyser
with an accumulation container was used to measure their radon surface and
mass exhalation rates. Results showed that the activity concentrations of
226Ra, 232Th, and 40K varied from 5.2 ? 0.6 (satin plaster) to 187.0 ? 2.4
(granite) Bqkg-1, 2.6 ? 0.8 (gypsum) to 172.2 ? 7.6 (granite) Bqkg-1 and
12.3 ? ? 17.0 (sand) to 1958.0 ? 83.4 (brick) Bqkg-1, respectively. Radon
surface and mass exhalation rates varied from 2.9 (marble) to 2734.6
mBqm-2h-1(granite) and 0.033 (marble) to 53.866 mBqkg-1h-1 (granite),
respectively. The activity concentration index, indoor absorbed gamma dose
rate and corresponding annual effective dose were estimated and compared
with the recommended limit values. The results indicated that the building
materials sampled presented no significant radiological risk.
Survival outcomes in surgically treated patients with advanced laryngeal cancer in Serbia
Authors: Milovanovic Jovica , Jotic Ana , Tesic-Vidovic Ljiljana , Djukic Vojko , Trivic Aleksandar , Krejovic-Trivic Sanja , Radin Zorana , Savic-Vujovic Katarina , Milovanovic Andjela , Banko Bojan , Artiko Vera
Published: September 2018

Background/Aim. Laryngeal carcinomas make 1%?3% of all head and neck malignancies.Treatment outcome and survival rates depend greatly on established stage of the disease. The purpose of this study was to examine the survival of the patients with advanced laryngeal carcinoma depending on gender, age, common risk factors (tobacco and alcohol use), primary tumor localization, histopathological tumor grade, clinical TNM (tumor, node and metastasis) stage and surgical treatment of the disease. Methods. Retrospective study included 252 patients treated surgically for advanced squamocellular carcinoma of the larynx in a threeyear period with five-year follow-up. Patients included in the study were treated primary with surgery, with postoperative radiotherapy and chemotherapy depending on the stage of the disease, intraoperative findings and tumor resection borders. Overall survival and disease-specific five-year survival of patients was calculated for demographical and clinical characteristics of the patients. Results. Overall 5-year survival of patients with operable advanced laryngeal cancer included in the study was 86.14% and disease-specific survival 86.51%. Lower overall and the disease-specific survival was associated with age, higher histological tumor grade and more extensive neck dissections. Conclusion. Primary total laryngectomy results in higher survival outcomes in cases of transglottic T3 and T4a laryngeal tumors. Patients should be informed of the likely increased mortality risks tied to the choice of surgical resection and treatment modality before their decision.
Nasal polyposis: A semiquantitative morphometric histopathological study
Authors: Trivic Aleksandar , Tomanovic Nada , Krejovic-Trivic Sanja , Milovanovic Jovica , Boricic Ivan , Jotic Ana , Folic Miljan , Colovic-Calovski Ivana , Mikovic Nikola , Tatic Zoran
Published: September 2018

Background/Aim. Nasal polyps are inflammatory hyper-trophic proliferations of the sinonasal mucosa composed of both epithelial and stromal elements. The aim of this study was to determine histopathological hallmarks of nasal polyposis via semiquantitative morphometric study. Methods. The study comprised 77 patients with chronic rhinosinusitis and nasal polyposis (CRSwNP) that underwent functional endoscopic sinonasal surgery performed by the same surgeon. The control group consisted of 9 different nasal mucosal samples that were taken from patients without CRSwNP that underwent functional and esthetic surgery. Morphometric analysis included gradation of tissue edema within polyps, thickening of epithelial basal membrane, degree of inflammation, presence/absence of metaplasia with-in epithelium, degree of fibrosis within polyps, and percentage of inflammatory cells within inflammatory infiltrate (lymphocytes, macrophages, plasma cells, neutrophils and eosinophils). Results. As expected, samples from the study group showed significantly higher degree of inflammation than samples from the control group (?2 = 35.89, with p < 0.01). Degree of fibrosis in nasal polyposis was in positive correlation with duration of symptoms (r = 0.25, p < 0.05) and with percentage of macrophages in inflammatory infiltrate (r = 0.26, p < 0.05). Patients with nasal polyposis had significantly lower number of lymphocytes (r = -7.66, p < 0.01), but significantly higher number of eosinophils (r = 3.84, p < 0.01), macrophages (r = 3.34, p < 0.01) and plasma cells (r = 3.14, p < 0.01) than controls (p < 0.01). Conclusion. Tissue samples from patients with nasal polyposis show significant changes that reflect in various degrees of inflammation, fibrosis and basement membrane thickening which may contribute to more difficult surgical management and perioperative complications such as bleeding.
Efficacy and safety of pegylated-interferon alpha therapy in patients with chronic hepatitis B in recource-limited settings- Serbian single-center experience
Authors: Bojovic Ksenija , Jordovic Jelena , Simonovic-Babic Jasmina , Delic Dragan , Mitrovic Nikola , Katanic Natasa
Published: September 2018

Background/Aim. In Serbia, pegylated interferon (PEGIFN) alpha-2a has been registered since 2013 for the treatment of patients with chronic hepatitis B (CHB). Numerous advantages, new experiences during the past five years and lack of any published data in our specific population, have initiated this study, with the aim to examine efficacy and safety of PEG-IFN in patients in a Serbian referral center. Methods. This prospective study included 36 patients with CHB who were treated in the Hepatology Department of the Clinic for Infectious and Tropical Diseases, Clinical Center of Serbia in Belgrade, during 2012?2017. Patients had a standard 48-week treatment protocol with PEG-IFN, with measurements of liver enzymes, serology and viraemia before, during, at the end of the treatment and follow-up 6 months afterwards. Treatment outcome was determined using serology (clearance of HBeAg), biochemical [normalization of alanine aminotransferase (ALT)] and virological response [hepatitis B virus (HBV) DNA < 2,000 IU/mL]. Results. Virological success in patients with HBeAg positive CHB was achieved in 50% of patients, HBeAg clearance in 62.5%, and normalization of ALT in 37.5% of patients. In patients with HBeAg negative CHB, 38% of the patients achieved virologic success, biochemical success was obtained in 47.6% of the patients and only one (4.7%) patient had HBsAg clearance. Conclusion. PEG-IFN is important for treatment of patients with CHB in well-defined situations, and in our population success rates are similar to other published studies. Although safety and tolerability are satisfactory, there is a possibility of more serious side-effects so it is necessary to monitor patients regularly during the treatment.
"Serbian, first phase" of the supression of the epidemics in 1914 and 1915
Authors: Cukic Goran
Published: September 2018

nema
Comparison of Risk Factors in Patients With Acute and Chronic Orofacial Pain
Authors: Honda Yoshifumi , Handa Toshiyuki , Fukuda Ken-ichi , Koukita Yoshihiko , Ichinohe Tatsuya
Published: September 2018

Management of patients with orofacial pain may benefit from a better understanding about patient factors that may lead pain chronicity. In this study, we retrospectively compared physical and psychological factors in patients with acute and chronic orofacial pain. We analyzed data from 854 patients presenting to the Orofacial Pain Center, Department of Dental Anesthesiology, Tokyo Dental College, Suidobashi Hospital between April 2010 and March 2014. We categorized patients into the acute group if their condition had persisted <6 months and the chronic group if their condition had lasted 6 months or longer, based on the classification by the International Association for the Study of Pain. The retrospective data were analyzed by using univariate analysis on background factors from a health questionnaire, pain evaluation sheet, and psychological test completed at the time of presentation. Multiple logistic regression was applied on these factors. Our results suggest that female gender and high trait anxiety may be involved in orofacial pain becoming chronic.
AKHLAK TERPUJI DAN YANG TERCELA: Telaah Singkat Ihya’ Ulumuddin Jilid III
Authors: Hajriansyah Hajriansyah
Published: September 2018

Ihya 'Ulumiddin is the masterpiece of Hujjatul Islam al-Ghazali. This book, composed of four large volumes, was mentioned as a work that elaborates the understanding of Shari'ah with Sufism, and always referred too in the two contexts of thought. This paper will briefly examine the thought of al-Ghazali in this book, especially in Volume III which talks about al-Muhlikat. The approach begins with a biographical review of the author of this book, the socio-religious background in which it was written and the author's motivation, as well as the miracle of the heart, morally disgraceful and love of the world.

Keyword: Al-Ghazali, Ihya ‘Ulumiddin, Volume III, Al-Muhlikat, Miracle of Heart.
KOMUNIKASI ORANG TUA-ANAK DALAM AL-QURAN (Studi Terhadap QS. Ash-Shaffat ayat 100-102)
Authors: Zainab Siti
Published: September 2018

Tulisan ini bertujuan untuk mengungkap bagaimana komunikasi orangtua-anak dalam perspektif al-Quran khususnya pada Q. S., ash shaffat  ayat 100-102.

Penelitian ini murni kepustakaan dengan  menggunakan pendekatan tafsir. Teknik yang digunakan adalah dengan seleksi sumber dan analisis isi. Data primer adalah al-Quran al-karim dan kitab-kitab tafsir, sedangkan data sekunder adalah buku-buku yang berkaitan dengan Ilmu Komunikasi . Data dianalisis dengan menggunakan tafsir tahlili .

Hasil penelitian menunjukkan, Pertama: Kandungan Q. s., ash shaffat ayat 100-102 mengemukakan betapa pentingnya sebuah do’a dipanjatkan secara sungguh-sungguh oleh orangtua agar diberi anak yang shaleh; ketika dianegerahi seorang anak hendaklah dididik dengan baik agar tumbuh menjadi anak yang shaleh; ketika mendidik anak tentunya banyak terdapat cobaan, masalah dan hambatan, selain penanaman agama sejak dini kepada anak, cara lainnya dilakukan  dengan menjalin  komunikasi yang baik antara orangtua dan anak. Kedua: Komunikasi orangtua-anak  yang dibangun antara nabi Ibrahim a.s. dengan Nabi Ismail a.s.pada Q. s., ash-shaffat ayat 100-102 adalah : membangun kebersamaan dan kepercayaan; menjalin komunikasi yang baik melalui cara saling terbuka, melakukan dialog/diskusi dengan rasa saling menghargai dan menghormati; dapat berempati dan saling mendukung sehingga adanya kesamaan visi dalam melihat persoalan yang pada akhirnya  tercipta komunikasi yang efektif. Kesamaan visi tersebut bersumber dari pemahaman agama yang benar dan sama –sama berusaha melaksanakan dan mengikhlashkannya. Komunikasi yang terjalin baik antara orangtua dan anak karena keduanya (baik sebagai komunikator maupun komunikan) memiliki karakter yang kuat (iman yang kuat, ilmu yang tinggi serta perilaku yang baik). Selain itu dalam berkomunikasi dilakukan dengan pemilihan bahasa/ kata yang baik dan menerapkan teknik komunikasi yang tepat dan benar.

Kata kunci: Komunikasi Orangtua-anak, Q.S., ash Shaffat ayat 100-102
ANALISIS KAJIAN KEMUNDURAN DAN KERUNTUHAN DINASTI FATHIMIYAH (SEBUAH STUDI PUSTAKA)
Authors: Dalimunthe Latifa Annum
Published: September 2018

The Fathimiyah caliphate, one of the Ismaili Shi'ite Islamic dynasties, in 909 AD in North Africa after defeating the Aghlabiah Dynasty in Sijilmasa. In history, the glory of Fathimiyah dynasty includes the system of government, philosophy, science and literature. After the reign of the caliph Al-Aziz Fathimiyah dynasty began to decline until the collapse. Problem formulation: How the formation of Fathimiyah dynasty. How to advance the civilization of the Fathimiyah Dynasty? How the decline and collapse of the Fathimiyah dynasty.

Research Methodology: The research process is done by taking literature study from literarure, books. To discuss the results of research done by linking descriptions of literature, and books.

The results show that: The founder of the Fathimiyah Dynasty was Sa'id ibn Husayn. At the end of the 9th century AD, Abu Abdullah al-Husayn al-Shi'i, one of the main propagandists of the Shiite leader of Isma'iliah, was from Yemen son of the Berber tribe in North Africa, as the main envoy of Imam Mahdi and managed to influence the Berber community. Ziyadatullah al-Aghlabi 903-909 M (Aghlabiah dynasty) is in power in North Africa centered in Sijilmasa. Having succeeded in establishing his influence in North Africa, Abu Abdullah Al-Husain wrote a letter to the Ismaili Imam, Sa'id bin Husain As-Salamiyah to leave immediately for Utar Africa. In 909 AD Sa'id proclaimed himself a priest with the title Ubaidullah Al-Mahdi. In history, the glory of Fathimiyah dynasty includes the system of government, philosophy, social conditions, scholarship and literature. The decline and disintegration of the Fathimiyah Dynasty, the caliph Fathimiyah initially controlled all activities, but among the caliphs there were those who handed the supervisory duties to the amir, because the age of the caliph was underage and did not even understand the political world. For example, after Al-Aziz died, Abu Ali Al-Mansur was eleven years old appointed to replace him with the title of Al-Hakim. The final period of the Fathimiyah Dynasty rivalry for the post of prime minister is increasingly widespread, such as Syawar with Dhargam. End of Nuruddin Mahmud's entry to help him reclaim his power from the hands of Dhargam. Al-Adhid, the last Fathimiyah caliph passed away 10 Muharram 567 H / 1171 M. then the Fatimid dynasty was destroyed after reigning for about 280 years, then Saladin holds the Caliphate.
Keywords: dynasty, fathimiyah
KRITIK SEYYED HOSSEIN NASR TERHADAP KLAIM KEBENARAN MODERNISME
Authors: Fadli Syairil
Published: September 2018

Filsafat bermula dari kekaguman terhadap yang sederhana, pada gilirannya mampu melahirkan ilmu pengetahuan dalam berbagai bidang. Kekaguman itu ditandai dengan keinginan manusia menjawab rahasia alam, manusia, dan Tuhan. Manusia ingin memahami dan mengetahui apa yang dapat dilakukan terhadap apa yang mereka ketahui. Pertanyaan mendalam menjadi kebutuhan dan menghantui seperti: “Kenapa aku berada di jagad ini?”; “Apakah yang dimaksud dengan pengetahuan?”; “Apakah radikal itu?”. Hal senada diungkapkan oleh Seyyed Hossein Nasr, kapan dan di mana pun berada, manusia tidak dapat menghindari pertanyaan mendasar dengan serius, “Siapakah manusia?” “Dari mana manusia berasal?” “Apa yang manusia kerjakan?” dan “Akan ke mana manusia pergi?” Leenhouwers berpendapat, dari sekian banyak pertanyaan, kalau diperas menjadi satu pertanyaan menentukan, yakni, “Apakah kebenaran itu?”

Kata Kunci: Sayyed Hossein Nasr, Modernisme
KOMUNIKASI INTERPERSONAL TENAGA PENDIDIK TERHADAP KEBERHASILAN BELAJAR SISWA PADA MIS ASSALAM MARTAPURA DAN MIN SUNGAI SIPAI KABUPATEN BANJAR
Authors: Ropiani M.
Published: September 2018

Dalam penelitian ini, peneliti menggunakan metode pendekatan kuantitatif karena data yang digunakan secara umum berupa angka-angka yang dihitung melalui uji statistik. sedangkan spesifikasi adalah deskriptif analitik korelasional. Yakni penelitian ini melukiskan secara sistematis, faktual, dam cermat juga berusaha memberikan gambaran tentang apa saja yang ada hubungannya dengan penelitian kemudian, menganalisa untuk menemukan pemecahan masalah yang dihadapi. Dalam hasil pengamatan yang di lakukan pada dua Madrasah Ibtidaiyah di Kabupaten Banjar, yakni Madarasah Ibtidaiyah Assalam Martapura dan Madrasah Ibtidaiyah Negeri Sungai Sipai, dimana dari dua Madrasah Ibtidaiyah tersebut adalah Madrasah Ibtidaiyah Assalam Martapuran merupakan sekolah swasta di bawah naungan Kemenag yang juga binaan dari Madrasah Ibtidaiyah Negeri Sungai Sipai,  pada kedua sekolah tersebut sering di jumpai bahwa faktor yang mempengaruhi belajar ini meliputi metode mengajar, kurikulum relasi tenaga pendidik dengan siswa, relasi siswa dengan siswa, disiplin, pelajaran, falisilitas dan waktu, standar pelajaran, keadaan gedung, metode belajar dan tugas rumah. Belajar mengajar merupakan perilaku inti dalam proses pendidikan dimana anak didik dan pendidik berinteraksi. Interaksi belajar mengajar ditunjang oleh beberapa faktor lain dalam pendidikan antara lain: tujuan pendidikan, pendidik, anak didik, alam dan fasilitas pendidikan, metode mengajar, materi pelajaran dan lingkungan.

Kata Kunci: Komunikasi Interpersonal, Tenaga Pendidik
WARIA, PEMERINTAH, DAN HAK SEKSUAL: KASUS IMPLEMENTASI PERDA GEPENG DI DAERAH ISTIMEWA YOGYAKARTA
Authors: Sa'dan Masthuriyah
Published: September 2018

Gubernur Daerah Istimewa Yogyakarta mengeluarkan peraturan daerah nomor 1 tahun 2014 tentang penanganan gelandangan dan pengemis. Para waria yang mengamen di pinggir jalan, di trotoar dan di lampu merah juga menjadi incaran utama aparat. Sehingga mereka yang ditangkap tidak mendapat perlakuan yang manusiawi di camp assessment termasuk pelayanan dalam hal kesehatan seksual dan reproduksi bagi waria yang mengidap  HIV/AIDS. Padahal mengamen bagi waria mungkin ”satu-satunya” cara untuk bertahan hidup di kota Yogyakarta. Dengan menggunakan kajian pustaka, tulisan ini ingin mengkaji mengapa waria mengamen dan bagaimana sikap dan tanggung jawab negara untuk memenuhi hak asasi bagi waria.

Kata kunci: waria, pemerintah, hak seksual.
Combining art activities and nature in pre-school education
Authors: Temiz Zeynep , Karaarslan Semiz Güliz
Published: September 2018

The purpose of this study was to integrate nature and natural materials in art activities in pre-school education setting.   Eight pre-service early childhood teachers taking practicum course participated in this study. Pre-service teachers were encouraged to use nature and natural materials in art activities through ten weeks period. Qualitative data consisted of art activities conducted with natural materials in the practicum course and interviews conducted with pre-service teachers before and after they applied their activities. Findings of the study revealed that pre-service teachers used unusual and engaging material compared to conventional stationary materials generally used in art activities. Pre-service teachers’ art materials included stones, leaves, soil, sand, bones, fruits, animal products and parts but not limited to those materials. Pre-service teachers used these materials in their art activities in two different ways. First, they used these materials as substitutes of stationery materials. For instance, they filled the bird picture with stones and leaves instead of filling with colourful papers, beads and silver. Second use of natural materials fit better to aim of this study since pre-service teachers lead children to create authentic art products with natural materials that they provide to them. Moreover, throughout the course pre-service teachers’ self-confidence to apply nature based art activities developed.
El eco-etnodesarrollo el chocó biogeográfico. Estudio a partir del extractivismo y las luchas Sociales por el territorio
Authors: Palacios Valencia Yennesit , González Ángela Cecilia , Monsalve Builes Diego
Published: September 2018

El objetivo del presente artículo es demostrar, desde la visión del eco-etnodesarrollo, la crisis humanitaria que padece el departamento del Chocó, teniendo en cuenta la grave afectación de los diversos grupos étnicos en sus territorios por causa del desplazamiento forzado por el conflicto armado, el riesgo en la extinción de poblaciones indígenas y tribales, las prácticas de recursos extractivos, que han puesto a los territorios en situaciones de disputa, y el narcotráfico, que evidencian la degradación que padece el departamento, ligado a los márgenes de pobreza que enfrenta, aún con la enorme riqueza ambiental y étnica que posee.
El enfoque praxeológico, articulación entre conocimiento, práctica Y transformación social
Authors: Lopera Montoya Diana , Gutiérrez García Ricardo Andrés
Published: September 2018

La Corporación Universitaria Minuto de Dios (UNIMINUTO), en su misión de aportar a la transformación de las realidades sociales, plantea en su enfoque educativo la estrategia que procura articular la teoría con la práctica —praxeología—. Por ello, la investigación formativa es un planteamiento que viabiliza que tanto estudiantes y docentes vivan y sientan realmente el conocimiento y que, a su vez, articulen e incidan en las comunidades. A este respecto, presentaremos una experiencia que da cuenta del enfoque praxeológico. La intención de Uniminuto es, entonces, que el conocimiento transforme y genere reflexiones y acciones de cara a las necesidades de los contextos. La universidad de hoy no puede ni debe sustraerse a una mirada sobre el territorio, sus problemáticas y potencialidades, por tanto, estudiantes y docentes deben constituirse en conectores de espacios académicos con la realidad social.
Estrategias para la inclusión de estudiantes sordos en la educación superior latinoamericana
Authors: Salazar Durango Miguel Ángel
Published: September 2018

La universidad, particularmente en Latinoamérica, refleja grandes vacíos en su contexto social. A pesar de los avances académicos e investigativos se suele dejar de lado la riqueza cultural y lingüística de comunidades que hacen parte de la misma realidad social. Un caso puntual es el de la comunidad sorda, cuyo acceso a la educación superior es muy reducido; incluso, quienes ingresan a la universidad pueden enfrentarse a condiciones hostiles y alejadas de una educación humanista. En general, son muy incipientes los procesos que se tienen con la inclusión de esta población en la educación superior. Por eso, en este trabajo se plantean algunas estrategias que pueden adaptarse en las instituciones universitarias, con el fin de lograr las transformaciones pertinentes para una educación popular que incluya a estas minorías.