bluuebunny/crossref_metadata_2025 huggingface dataset:
Observations from the IDA network of the moment tensor of the Oaxaca earthquake, november 29, 1978
Authors: Masters T. G. , Berger J. , Gilbert F.
Published: May 2021

Para determinar el mecanismo focal del temblor de Oaxaca del 29 de noviembre de.1978 se usan datos de 8 estaciones de lDA. Asumiendo que la función de tiempo tiene la forma de un escalón, se calcula la función de Green para cada estación mediante la superposición de 1,117 modos para el modelo 1066A (períodos mayores de 80 seg). El tensor de momentos se obtiene por medio de un análisis en el dominio del tiempo utilizando el método de mínimos cuadrados y la descomposición en valores singulares. Resultados muy preliminares indican un momento de escalar de aproximadamente 2-3 x 10₂₀ N.M. (2-3 x 10₂₇1 dinas-cm).
Focal mechanism of six large earthquakes in northern Oaxaca, Mexico, for the period 1928-1973
Authors: Jiménez Z. , Ponce L.
Published: May 2021

Con el fin de ayudar a comprender el neotectonismo en la región norte de Oaxaca, se estudiaron 6 temblores fuertes (mb≥6.5) de profundidad intermedia que ocurrieron durante los últimos 50 años (1928-1973) en dicha región. Para el temblor de Orizaba del 28 de agosto de 1973 (mb = 6.5) se redeterminaron cuidadosamente la profundidad y su localización epicentral; además se halló el mecanismo focal utilizando las fases P, S, PKP, pP, sP y pPKP. lgualmente se redeterminaron la profundidad, el epicentro y el mecanismo focal de otros cinco eventos usando las mismas fases sísmicas. Para obtener una solución más confiable se compararon registros de diferentes eventos para la misma estación respecto al temblor del 28 de agosto de 1973. Los valores hallados para la profundidad relativos a los dados por el USGS varían en general ± 15 km y las localizaciones cambian hasta alrededor de 50 km. El mecanismo focal para todos los eventos representan fallas normales similares a la solución del temblor del 28 de agosto de 1973. Los resultados indican que la placa de Cocos que desciende bajo la placa de Norteamérica está buzando alrededor de 20° en esta región. El carácter tensional de estos temblores de profundidad intermedia, al norte de Oaxaca, pudiera tener relación con la actividad volcánica al este del Eje Volcánico.
A dipping gradient layer velocity model for southern Mexico
Authors: Drowley D.J. S. , Mcnally K. C. , González Luis
Published: May 2021

Datos de tiempos de viaje de ondas sísmicas fueron utilizadas,- para estimar un modelo de velocidades para la parte sur de México, en las vecindades de Oaxaca. El 29 de noviembre de 1978, ocurrió un fuerte temblor (Ms=7.8) aproximadamente a 40 km al sur de Oaxaca, en la interfase de subducción de la Placa de Cocos y la Placa de Norteamérica. La red de estaciones permanentes operada por la UNAM y una red local de estaciones operada conjuntamente por la UNAM y CALTECH, registró la secuencia de precursores, el temblor principal y las réplicas. Este conjunto importante de datos ofrece una excelente oportunidad para estudiar las distribuciones espacial y temporal de la sismicidad antes y después de un gran temblor. Sin embargo antes de realizar cualquier estudio detallado. Se requiere un adecuado modelo de velocidades para una capa buzante que asegure una  localización confiable de los eventos. Los tiempos de viaje de varios precursores y réplicas bien registrados fueron usados en un proceso un proceso de inversión, utilizando un algoritmo no lineal de mínimos cuadrados; se estimó un modelo de velocidades para una capa buzante con gradiente de velocidades sobre un semiespacio de velocidad constante. Resultados preliminares indican un buzamiento de la interfase de la corteza y el manto de 7° en la dirección N20° E. La profundidad de esta interfase en las cercanías de la costa es de 25km con una velocidad de 8.186 ± 0.48 en el manto.
Gravimetric changes and anomalous variations of the mean sea level during the november 29, 1978 earthquake
Authors: Mena M. , Grivel F. , Monges J.
Published: May 2021

El Instituto de Geofísica de la UNAM ha realizado medidas de gravedad de primer orden a lo largo  de la Costa del Pacífico, entre Lázaro Cárdenas Mich. y Puerto Angel, Oax. Con el objeto de detectar posibles cambios gravimétricos debido a ocurrencia de sismos en esta zona.En este trabajo se comparan las medidas tomadas en los años de 1972, 1976, 1977 y las que se hicieron después del sismo del 29 de noviembre de 1978.También se presenta un estudio anomalías del nivel diario medio del mar (Oh y 2h) previas, al sismo del 29 de noviembre de 1978.
Changing seismicity near the Mid-America Trench
Authors: Wier Stuart
Published: May 2021

Después de la ocurrencia del temblor de Oaxaca del 29 de noviembre de 1978, ocurrió un número relativamente alto de eventos asociados a la trinchera de América Central. 17 temblores de magnitud Mb≥5.0 fueron registrados por NEIS SGS en los cuatro meses siguientes. Para el período 1969-1979 se tiene en promedio 8.4 eventos/4 meses con una desviación estándar de 3.2; un valor similar se tiene para el período desde 1963 a 1968. Después del temblor de Oaxaca la actividad es superior al promedio, en 2.5 veces la desviación estándar. Esta actividad ocurre a lo largo de toda la trinchera de América central, lo que sugiere que el temblor de Oaxaca originó un cambio en el esfuerzo regional y que éste fue el adecuado para incrementar la sismicidad asociada a la trinchera de América Central. Se sugiere que el tamaño relativamente  pequeño de la Placa de Cocos tiene relación  con el incremento de la actividad sísmica.
Aeromagnetic survey of los Humeros Caldera, México
Authors: Flores L. Carlos , Singh S. K. , Urrutia F. Jaime
Published: May 2021

Un levantamiento aeromagnético regional sobre la caldera de Los Humeros, Puebla, México, rindió una anomalía de tipo bipolar sobre la región central de la caldera. Esta anomalía se interpretó como causada por un prisma intrusivo fuertemente magnetizado a una profundidad de 2 km, con dimensiones horizontales de 5 km y 2 km, que subyace la parte central de la caldera. Se presentan otras anomalías de menor intensidad sobre y fuera del contorno de la caldera. El fuerte contraste entre la intensidad efectiva del dique intrusivo volcánico y la de los flujos superficiales es del orden de 16 x 10ᵌ unidades cgs, lo que concuerda con otras determinaciones de magnetización hechas sobre volcanes de Hawai, Japón y otros, usando análisis de estudios aeromagnéticos. Es improbable que exista un cuerpo de dimensiones mayores y material fundido abajo de la caldera hasta una profundidad de 7 km; sin embargo, existe la posibilidad de que el cuerpo pueda estar a una temperatura menor pero cercana a la de Curie, lo cual lo puede hacer de interés geotérmico.
Regional gravity of los humeros volcanic area
Authors: Mena Manuel , González-Moran Tomás
Published: May 2021

En el extremo este del Eje Volcánico Transmexicano se encontró una anomalía gravimétrica negativa. Tectónicamente, dicha anomalía parece corresponder a un hundimiento en el que han tenido lugar varias. series de episodios volcánicos: el área considerada es un campo geotérmico potencial, limitada al Norte, por el complejo litológico de Teziutlán, hacia el Sur, por las llanuras de Tepeyehualco, al Oeste por la Sierra Madre Oriental y al Este por la cadena del Pico de Orizaba-Cofre de Perote. El estudio realizado incluye el mapa gravimétrico de las anomalías de Bouguer completa, los mapas obtenidos de la separación regional-residual y un modelo bi-dimensional de la porción central de la caldera de Los Humeros que contiene una anomalía central, positiva, aparentemente correspondiente a una obturación central masiva. Además de una discusión esquemática de la evolución del área volcánica, se propone la existencia de una caldera localizada entre la de Los Humeros y la montaña Cofre de Perote, que está totalmente rellena de material volcánico.
Microearthquake activity associated to los humeros caldera, México: preliminary survey
Authors: Ponce L. , Rodríguez C.
Published: May 2021

Con el propósito de observar microtemblores asociados a la caldera de Los humeros, Puebla, México, entre el l 2 y 24 de enero de 1977 se instalaron 3 estaciones sismologías portátiles en su interior. Se localizaron 7 eventos de magnitud m-1.0. Tres de estos eventos fueron localizados usando primeros arribos, suponiendo que ocurren a una profundidad de 1 km y =. 2.5km/seg. Los restantes cuatro eventos no presentan fases legibles para las ondas internas P y S; su localización se estima a partir de los tiempos de arribo de la máxima amplitud de las ondas superficiales (fase de Airy) suponiendo que este máximo está controlado principalmente por la velocidad Ele las ondas sísmicas de la cubierta de cenizas volcánicas presentes en la caldera. Otros eventos de menos magnitud fueron registrados en una o dos estaciones; en ptomedio se registraro~ 3 eventos/estación/día, actividad comparable a la observada en otras estructuras geológicas de interés geotérmico. De un total de 96 eventos registrados, la mitad ocurren en forma de enjambres. Además, se observaron microtemblores del tipo "A", "B" y de "Trepidacion", característicos de estructuras volcánicas activas o de reciente. actividad. Los datos sugieren la existencia de una zona que atenúa más intensamente las ondas sísmicas: esta zona presenta también anomalías en medidas de autopotencial y temperatura (Álvarez, este volumen).
Growth Parameters and Reproductive Biology of Citharus linguatula (Linnaeus, 1758) from the Sea of Marmara (Turkey)
Authors: Daban İsmail Burak , Arslan İhsanoğlu Mukadder , İşmen Ali , Yığın Cahide Çiğdem
Published: May 2021

An economically important species of Citharus linguatula was investigated in the Sea of Marmara (Eastern Mediterranean, Turkey). Length-weight relationships, growth parameters, reproductive time, and first sexual maturity length of the species were determined. A total of 236 individuals were analyzed, total length and weight varied from 7.5 to 26.5 cm TL (17.11±3.62 cm) and 2.67 to 180.81 g (44.07±1.84 g), respectively. The length-weight relationship was calculated as W=0.0047*TL3.17 in total. The growth type was positive allometry for both sexes. Total individuals were ranged in age between 1 and 4. According to sexes, von Bertalanffy growth parameters were calculated as L∞=23.44 cm, K=0.74 per year, and t0=-0.09 year for females and L∞=20.75 cm, K=0.56 per year, and t0=-1.14 year for males. The size at first maturity was 17.6 cm TL for males, and 16.7 cm TL for females. When sexual maturity, K, and GSI values were evaluated together, the reproduction period of C. linguatula was determined between September and December.
Köyceğiz Lagünü’nden Avlanan Altınbaş (Chelon auratus) ve Mavri (Chelon labrosus) Kefallerinin Besin Kompozisyonu ve Yağ Asidi Profilinin Mevsimsel Değişimi
Authors: Metin Cansu , Alparslan Yunus , Baygar Taçnur
Published: May 2021

Bu çalışmada, ülkemizde ekolojik ve ekonomik öneme sahip birkaç dalyandan biri olan Köyceğiz Dalyanı’ndaki Altınbaş (Chelon auratus) ve Mavri (Chelon labrosus) kefal türlerinin besinsel içerikleri aylık olarak incelenmiştir. Köyceğiz Dalyanı’na giren bu kefal türlerinin 12 ay boyunca protein, yağ, nem, kül ve yağ asidi olmak üzere besin kompozisyonu analizleri yapılmıştır. Bu sayede dalyandan kefal avlayarak satışa sunan DALKO kooperatifi için bu türlerin besin içeriği etiket bilgileri oluşturulmuştur.Çalışma sonucunda Altınbaş kefal; Ocak, Şubat, Mart, Haziran, Temmuz, Eylül, Kasım ve Aralık aylarında ve Mavri kefal; Ocak, Mart, Mayıs, Haziran, Temmuz, Ağustos ve Eylül aylarında temin edilmiştir. En yüksek protein miktarı Altınbaş kefal ve Mavri kefal için sırasıyla Eylül (%22,50) ve Ocak aylarında (%23,24); en yüksek yağ değerleri ise %4,46 ve %3,01 olmak üzere Temmuz ayında bulunmuştur. Yağ asidi kompozisyonu açısından her iki kefal türünde de doymuş yağ asitlerinden Miristik asit, Palmitik asit, Stearik asit; tekli doymamış yağ asitlerinden Palmitoleik asit, Oleik asit ve çoklu doymamış yağ asitlerinden Linoleik asit, Eikosatrienoik asit, Eikosapentaenoik asit (EPA) ve Dokosaheksaenoik asit (DHA) major yağ asitleri olarak tespit edilmiştir.
Evaluation of the Toxicity Activity of Bioactive Compounds of Some Geophytes against Brine Shrimp (Artemia salina L.)
Authors: Turan Murat , Mammadov Ramazan
Published: May 2021

Artemia salina L.is an important model organism for the world ecosystem, which is very sensitive, easily available, allows to work in the laboratory environment, is used in toxic effect studies, and gives safe results. This study was designed to evaluate the toxic effect of water extract of fresh and underground parts of some species of five geophyte genera (Arum rupicola var. virescens (Stapf) P.C. Boyce, Cyclamen cilicium Boiss. & Heldr, Gagea bohemica (Zauschn.) Schult. & Schult. f., Narcissus tazetta subsp. tazetta L., Paeonia kesrouanensis J. Thiébaut) against A. salina. All taxa were found to be more toxic in the fresh part than in the underground part. The fresh part of P. kesrouanensis was shown the highest toxic effect with 44.44 ± 2.78% (1.56 ± 0.13 mg/mL, LC50) and the underground part of N. tazetta subsp. tazetta was shown the lowest toxic effect with 8.33 ± 0.00% (294.68 ± 1.54 mg/mL, LC50). The underground part of N. tazetta subsp. tazetta and Gagea bohemica were not found toxic with > 1000 mg/ml, LC90. Based on the studies showing that A. salina toxic effect studies are related to insecticide and anticancer studies, it is seen that especially the fresh part of P. kesrouanensis has potential insecticide and anticancer properties, but more studies are needed.
Aeromonas hydrophila Suşlarının Antibiyotik Direnç Profilleri
Authors: Filik Nurdan , Önem Ebru , Kubilay Ayşegül
Published: May 2021

Aeromonas hydrophila virülens özellikleri açısından önemli bir patojen olup balıklarda ölümcül bir hastalık olan Motile Aeromonas Septisemisine (MAS) neden olur. Bu çalışmada hasta balıklardan izole edilen 20 A. hydrophila suşunun ve A. hydrophila ATCC 7966 suşunun 28 farklı antibiyotiğe karşı duyarlılığı araştırılmıştır. Araştırmada A. hydrophila suşlarında antibiyotik duyarlılık profilleri Kirby-Bauer disk difüzyon yöntemiyle saptanmış ve heri bir suşa ait Çoklu Antibiyotik Dirençliliği (ÇAD) indeksi hesaplanmıştır. Elde edilen sonuçlara göre suşların 12 antibiyotiğe dirençli, 14 antibiyotiğe duyarlı, 2 antibiyotiğe orta dercede duyarlı olduğu belirlenmiştir. ÇAD indeksi sonuçlarına göre suşların toplam 14 antibiyotiğe karşı çoklu antibiyotik direnci gösterdiği tespit edilmiştir. Suşların ÇAD indeks değerleri 0,21-0,75 aralığında tespit edilmiştir. Son yıllarda yapılan çalışmaların ortaya koyduğu bir bulgu A. hydrophila’nın oksitetrasikline karşı geliştirdiği dirençtir. Bu açıdan araştırma bulgularında en dikkat çeken oksitetrasiklin direnci olmuştur. A. hydrophila suşlarının araştırmada kullanılan antibiyotiklerin büyük bir kısmına ve yapılan bazı çalışmalarla tedavide en etkili antibiyotik olduğu bildirilen oksitetrasikline karşı direnç geliştirdiğinin tespit edilmesi suşların direnç profilinin yüksek olduğunu göstermektedir.Sonuç olarak, balık patojenlerinin oluşturduğu hastalıkların tedavisinde yanlış antibiyotik kullanımı sonucu patojenin direnç kazandığı, bu durumunda balık hastalıkları ile mücadelede ciddi bir sorun oluşturduğu görülmektedir.
Bafa Gölünde Küçük Ölçekli Balıkçılıkta Kullanılan Av Araçlarının Yapısal Özellikleri
Authors: Kaykaç Hakan , Tosunoğlu Zafer , Sarı Hasan Musa
Published: May 2021

Bu çalışmada, Bafa Gölü balıkçılığının karakteristik özelliği olan küçük ölçekli av araçlarının teknik ve yapısal özellikleri incelenmiştir. Av araçlarının donamsal ve operasyonel özellikleri 2018-2019 yılları arasında yerinde ve balıkçılar ile yüz yüze yapılan görüşmeler ile elde edilmiştir. Av araçlarının teknik ve detay planları FAO kataloglarına uygun standartlarda, MS-Visio Programı kullanılarak çizilmiştir. Gölde 200-250 tekne olmasına rağmen bu teknelerin sadece %10-15’i düzenli balıkçılık faaliyetinde bulunmaktadır. Küçük ölçekli av araçlarından galsama ve fanyalı uzatma ağları ile birlikte yoğun bir şekilde pinterlerin kullanıldığı tespit edilmiştir. Bu av araçları ile levrek, çipura, kefaller, gümüş balığı (camgöz) ve yılan balıkları yakalanmaktadır. Bu türler içerisinde en fazla kefal türleri yakalansa da en yüksek kazancı yılan balıkları sağlamaktadır. Bafa Gölü balıkçılığın sürdürülebilirliği, göl ekosistemi ile doğrudan ilişkilidir ve bağlantılı Büyük Menderes Nehri suları göl için hayati bir önem taşımaktadır. Bu nedenle, Bafa Gölü ve balıkçılığının sürdürülebilirliği için en kısa sürede Ekosistem Temelli Balıkçılık yönetimine geçilmelidir.
Evidence on Otolith Structure and some Ecological Features of Three Small Foraging Species along the Southern Black Sea Coast
Authors: Gümüş Aysun , Van Ayşe , Zengin Mustafa , Süer Serdar
Published: May 2021

In this study, we aimed to describe otoliths to provide information about the stomach contents of three small foraging species and to contribute to the currently limited biological and ecological evidence about the species. Seasonal experimental bottom trawl surveys were conducted along the shelf areas of the Kızılırmak-Yeşilırmak and Melet Rivers to collect investigation materials which were abundant in the bycatch composition of the target catch. The information about body size measurements, abundance values, depth, season, and locality of samplings was recorded for further evaluations. Otolith shapes were defined as discoidal to ovate for the Aphia minuta, discoidal for the Pomatoschistus marmoratus, and square for the Arnoglossus kessleri. The mean length and weight values of the Aphia minuta, which was abundant along shallow coastal waters (0-30 m), were significantly different between localities and sampling season, but no difference was found between depth ranges. Pomatoschistus marmoratus, whose distribution varied significantly between depths and seasons had dense distributions along with the depth range of 30-60 m. Arnoglossus kessleri was most abundant along with the depth range of 0-30 m and had no samples in depths of over 60 m. It was found that the mean values of length and weight of this species were only significantly different among seasons but similar over the depth ranges and localities.
Aksaray İli (Türkiye) İhtiyofaunası
Authors: Kelleci Muhammed , Seçer Burak , Çiçek Erdogan , Sungur Sevil
Published: May 2021

Aksaray ili ihtiyofaunasını belirlemek amacıyla Eylül 2015-Ağustos 2018 tarihleri arasında yapılan arazi çalışmaları sonucunda Aksaray ilinde 11 familyaya ait 19 tür tespit edilmiştir. Bunlar; Anatolichthys anatoliae, Atherina boyeri, Capoeta mauricii, C. tinca, Cobitis turcica, Cyprinus carpio, Gambusia holbrooki, Gobio gymnostethus, Oxynoemacheilus eregliensis, O. angorae, Oncorhynchus mykiss, Paraphanius similis, Pseudophoxinus crassus, Sander lucioperca, Seminemacheilius ekmekciae, Silurus glanis, Squalius cappadocicus, S. pursakensis ve Tinca tinca. Bu türlerden A. anatoliae, P. similis, C. mauricii, C. tinca, C. turcica, G. gymnostethus, O. eregliensis, O. angorae, P. crassus, S. cappadocicus, S. pursakensis ve S. ekmekciae endemik türlerdir. Squalius pursakensis, C. tinca, O. mykiss, O. angorae ve G. holbrooki ise il için yeni kayıt niteliği taşımaktadır.
Antibiotic and Heavy Metal Resistance of Escherichia coli Strains Isolated from the Seve Dam, and Konak Pond, Kilis, Turkey
Authors: Mercimek Takcı Hatice Aysun , Toplar Sevil , Sumengen Özdenefe Melis
Published: May 2021

Pollution of surface waters with coliform bacteria having antibiotic and heavy metal resistance has become an increasing public health risk. For this reason, antibiotic and heavy metal resistance profiles of fecal microorganisms in surface water samples collected from two different points (Seve Dam and Konak Pond, Kilis, Turkey) were analyzed in this study. The various physicochemical parameters such as pH, Temperature, Total Dissolved Solids (TDS), Electrical Conductivity (EC) of samples were also examined. The total coliform load in each sample was ˃1100 (MPN)/100 mL. As fecal indicator microorganisms, 21 Escherichia coli strains were isolated from sampling points. Despite the high coliform contamination, the multiple antibiotic resistance (MAR) index of E. coli was recorded as 0.187. The multiple heavy metal resistance (MHMR) index (0.202) was remarkably higher than the MAR value. Most isolates showed minimal inhibition concentrations (MIC) in the range of 25-1.600 μg/mL based on concentrations of heavy metals. These results indicate that surface waters may be discharge points of industrial and domestic wastewaters
Caracterización fisicoquímica e isotópica (18O y 2H) de la región norte del aquífero Tempisque, Costa Rica
Authors: Ordóñez-Olivares Ariana , Beita-Sandí Wilson
Published: May 2021

Introducción: El 70% del agua potable en Costa Rica se obtiene de fuentes subterráneas, que están en peligro de contaminación y de sobreexplotación debido a la falta de una adecuada gestión. Se ha dado un aumento en la cantidad de pozos registrados en la zona de Guanacaste, particularmente en el acuífero Tempisque. Objetivo: Investigar y generar nueva información fisicoquímica e isotópica (18O y 2H) para caracterizar el recurso hídrico de la región norte del acuífero Tempisque que se espera sirva como base para determinar el origen de la recarga del acuífero Tempisque. Metodología: Realizamos cuatro muestreos de agua subterránea, en 12 estaciones entre el 11 de mayo y el 12 de noviembre del 2010. Las muestras de agua se analizaron para determinar el contenido de isótopos estables mediante espectroscopia de cámara integrada con salida fuera de eje y además para caracterizarlas fisicoquímicamente. Resultados: Clasificamos las aguas subterráneas como aguas duras y muy duras. El ámbito de valores de pH medidos fue 6.57–7.91. La conductividad promedio en la zona de estudio fue 437μS/cm. El ámbito de concentraciones de bicarbonato fue de 129 –342mg/L HCO3–. Las aguas subterráneas de la región norte del acuífero Tempisque son del tipo bicarbonatadas cálcicas caracterizadas por una temperatura promedio de 28.0°C. Conclusiones: Hace una decada no determinamos contaminación en el agua subterránea por metales y además no encontramos evidencia de instrusión salina. Las zonas de recarga del acuífero están a las mismas alturas y algunos pozos se caracterizan por recargas meteóricas
Impacto de la taltuza, Heterogeomys underwoodi (Rodentia: Geomyidae) en la producción agrícola de Puriscal, Costa Rica
Authors: Chavarria-Chang Allan , Monge Javier
Published: May 2021

Introducción: La taltuza (Heterogeomys underwoodi) se considera una especie dañina para la producción agrícola pero hay muy poca información sobre su efecto. Objetivo: Conocer acerca del impacto de la taltuza Heterogeomys underwoodi a los cultivos agrícolas, características de los montículos, así como de las técnicas para su combate. Métodos: Realizamos una encuesta a 33 productores para determinar el daño y caracterizamos los montículos que construye esta especie. Resultados: Un total de 34 cultivos sufren daños que van del 25% al 50% de pérdida. El daño ocurre en estaciones secas y lluviosas, y en diferentes etapas fenológicas (tiempo de cosecha) dependiendo del cultivo. Las técnicas de combate más utilizadas son los productos tóxicos, seguidos de trampas, así como la introducción de plantas o animales en los sistemas de túneles. Conclusión: Estos animales afectan al menos a 34 cultivos y los productores utilizan una variedad de técnicas de control.
EFEKTIVITAS APLIKASI ZOOM MEETING TERHADAP KUALITAS PEMBELAJARAN JARAK JAUH MAHASISWA PENDIDIKAN MASYARAKAT IKIP SILIWANGI ANGKATAN 2018
Authors: Kuswandi Wandi
Published: May 2021

Penelitian ini dilatar belakangi adanya penerapan social distancing yang mengharuskan mahasiswa melaksanakan kegiatan pembelajaran secara online dalam rangka mencegah penularan COVID-19. Tujuan penelitian ini yaitu mengetahui efektivitas aplikasi Zoom Meeting yang digunakan mahasiswa dalam pembelajaran jarak jauh pada masa pandemi COVID-19. Teori yang digunakan dalam penelitian ini diantaranya: (1). Teori efektivitas, (2). Teori pembelajaran jarak jauh, dan (3). Konsep Pemanfaatan Aplikasi Zoom Meeting. Metode yang digunakan adalah metode deskriptif dengan pendekatan kualitatif. Data yang diperoleh melalui wawancara, observasi dan dokumentasi. Adapun yang menjadi subjek penelitian adalah Dua Dosen dan 12 Mahasiswa pendidikan masyarakat angkatan 2018 dari jumlah keseluruhan 20 orang. Hasil dari penelitian ini bahwa penggunaan aplikasi Zoom Meeting sangat efektif untuk pembelajaran daring atau jarak jauh, khususnya bagi program studi Pendidikan Masyarakat, IKIP Siliwangi, dimana proses pembelajaran bisa dilakukan dimana saja. Selain itu ada beberapa kendala yang dihadapi mahasiswa saat menggunakan aplikasi Zoom Meeting pada pembelajaran jarak jauh yaitu tidak stabilnya jaringan yang ada.
Body Hegemonies 2017: An Experimental Transfer
Authors: Monica Clare van der Haagen-Wulff  , Michael Lazar  , Fabian Chyle
Published: May 2021

Body Hegemonies is an artistic project aimed at exploring and making transparent some of the themes of epistemic violence and hegemonic orders resulting from the legacy of colonialism and slavery, as the hidden flip-side of modernity and enlightenment. Our aim was to examine the Eurocentric logic of dehumanization and processes of exclusion from the perspective of bodies and their embeddedness within these hegemonic structures. The goal was to use artistic methods as tools to research topics commonly examined within an academic framework. The project focused on aspects of bodies that have been/are being excluded or made invisible within contemporary and historical discourses. “Body Hegemonies” worked on the trans-disciplinary interface (entanglement) of theorists, performers and everyday practitioners (experts), in an attempt to make possible other forms of knowing and knowledge production. Specifically, we tried to performatively re-inscribe the historically erased body within the production of knowledge. To engage with and explore these questions, a one-week laboratory was held in which six artists/(social)scientists gathered in a secluded location near Cologne Germany to hold video conversations with international experts over three days on the topics mentioned above. Resulting from these conversations, the Cologne participants presented individual performative responses to the group, which in turn were worked into a “performative score” presented to the public on the last day of the laboratory. This was flanked by a mini-symposium with two international scholars on the topic of body-hegemonies to expand the discursive field within which to locate and understand the artistic explorations.
Composing Technique, Performing Technique
Authors: Scott McLaughlin  , Zubin Kanga  , Mira Benjamin
Published: May 2021

Technique as the entanglement of composition and performance as an epistemic object (Knorr Cetina) emergent from contingent materiality. Two pieces by Scott McLaughlin—respectively for Zubin Kanga (piano) and Mira Benjamin (violin)—are discussed as case studies of strategies for entwining the specific embodied techniques of instrumental performance with the material agency (Pickering) of the instrument as a 'material indeterminacy' in which knowledge inheres through practice (Spatz). This exposition situates the artistic research as a novel conceptualisation of 'technique' that treats composition and performance not as separate domains but as an Ingoldian 'meshwork' where virtual structures in the performance technique are amplified through processes of listening and through compositional structures into open-ended local feedback loops.
Evaluation of a predictive thrombotic risk and thromboprophylaxis score in cancer patients in a third level hospital.
Authors: Bermejo Lara Fernández , Esteban José Javier Jareño , Díez Javier de Miguel , Zabaleta Irene Milagros Domínguez , Hernández Carmen González , Rivas María Pilar Ochoa , Ortega Carlos Gutiérrez
Published: May 2021

Introduction: We aimed to analyse the application of Khorana score in
cancer patients. We also tried to evaluate the prescription of primary
thromboprophylaxis in cancer patients at risk of venous thromboembolic
disease (VTE). Methods: A retrospective observational study on survival
of hospitalized patients diagnosed with pulmonary embolism (PE) at the
Hospital Central de la Defensa from January 2009 to March 2018. They
were stratified into tumour PE (TPE) and non-tumour PE (nTPE). A
case-control study was also carried out with TPE patients and non PE
cancer patients (nPEC). Results: 108 patients were diagnosed with TPE,
260 nTPE and 324 nPEC. Gynaecological tumours were the most frequent
(23.1%), followed by lung, digestive and urological cancer (20.4%
each) in TPE group. Death risk was 1,9 times higher in cancer patients
(95%CI: 1.23-2.8) (p <0.001). Khorana score was ≥3 points in
9.7% of TPE and 3.1% of nPEC compared to 26.2% of TPE and 9.9% of
nPEC with Khorana score ≥2 points (p<0.001). 7.4% of TPE
patients received thromboprophylaxis. Khorana score in TPE patients
without thromboprophylaxis was ≥3 points in the 9% and ≥2 points in the
24%. Conclusions: There is a trend towards underuse of
thromboprophylaxis in our cancer patients and mainly in those with high
risk of VTE, as well as poor adherence to the Khorana score. More
studies are needed to validate these findings and to optimize predictive
strategies in the management of these patients.
Title: REAL CLINICAL IMPACT OF DRUG-DRUG INTERACTIONS OF IM-MUNOSUPPRESSANTS IN TRANSPLANT PATIENTS
Authors: GAGO ANA ISABEL , FONT PILAR , CÁRDENAS MANUEL , Aumente Dolores , PRADO JOSE RAMÓN DEL , Hernández Miguel Ángel Calleja
Published: May 2021

Aim: The main objective of this study was to determine the prevalence of
real DDIs between immunosuppressants and other drugs in transplant
patients. Methods: We conducted a prospective, observational 1-year
study at a tertiary hospital, including all transplanted patients. We
evaluated data from monitoring blood concentrations of immunosuppressive
drugs and adverse drug events (ADEs) caused by DDIs. The DDIs were
classified as C, D, or X according to their Lexi-Interact rating (C =
monitor therapy, D = consider therapy modification, X = avoid
combination). The clinical importance of real DDIs was expressed in
terms of patient outcomes. The data were analyzed using Statistical
Package for Social Sciences (SPSS) package v. 25.0 (IBM Corp., Armonk,
NY, USA). Results: A total of 309 transplant patients were included.
Their mean age was 52.0 ± 14.7 years (18–79) and 69.9% were male. The
prevalence of real DDIs was 21.7%. Immunosuppressive drugs administered
with anti-fungal azoles and tacrolimus (TAC) with nifedipine have a
great clinical impact. Real DDIs caused ADEs in 22 patients. The most
common clinical outcome was nephrotoxicity (1.6%; n=5), followed by
hypertension (1.3%; n=4). Suggestions for avoiding category D and X
DDIs included: changing the immunosuppressant dosage, using paracetamol
instead of non-steroidal anti-inflammatory drugs, and interrupting
atorvastatin. The number of drugs prescribed and having been prescribed
TAC was associated with an increased risk of real DDIs. Conclusion:
There are many potential DDIs described in the literature but only a
small percentage proved to be real DDIs, based on the patients´
outcomes.
The approximate analytical solution of the point source problem in 2D heterogeneous media
Authors: Liu Zhifeng , Zhang Shengsheng , Noetinger Benoît , Wang Xiaohong
Published: May 2021

The approximate analytical solution of the point source problem in 2D
heterogeneous media is provided in this article. It is based on the
analytical solution of 2D quasi-Laplace equation, which can be expressed
as a combination of piecewise power series. Each power series is
expanded at a singular point with a group of intrinsic non-integer power
exponents, and then they are sewn together to obtain the solution for
the whole region. To permit the power series to be used in the region
containing point sources, the point source is approximately treated as a
closed inner boundary, on which Neumann boundary condition is imposed.
By this means, the approximate analytical solution of the point source
problem, which is actually the Green’s function for 2D Poisson equation,
is obtained.
Riemann-Liouville Fractional Operators of Bicomplex Order and Its Properties.
Authors: Goswami Mahesh , Kumar Raj
Published: May 2021

In this paper, we construct the Riemann-Liouville fractional integral
and differential operator of bicomplex order and illustrate some
examples to calculate the fractional integration and differentiation of
bicomplex order of some elementary functions. Also, we discuss some
properties of these operators by proving analogues of the Leibniz and
chain rules for these operators.
ACCURACY OF PECARN DECISION RULE IN MINOR BLUNT HEAD TRAUMA IN PEDIATRIC EMERGENCY DEPARTMENT: A META-ANALYSIS
Authors: Yang Ke , Zhao Meng , Sun Jing , Nie Xiuli
Published: May 2021

Background: Pediatric Emergency Care Applied Research Network (PECARN)
is a useful Clinical Decision Support Tool (CDST) to identify traumatic
brain injuries and reduce the use of head CT scans among pediatric
patients. The present Meta-analysis aims to evaluate the diagnostic
accuracy of the PECARN rule from 2009 to 2020 in children with a very
low risk of blunt head trauma. Methods: A detailed search was conducted
from the databases of Medline (via PubMed), Cinahl (via Ebsco), Scopus,
Web of Sciences, from 2009 till the end of December 2020 using the
keywords like decrease use of CT scan, blunt head trauma (BHT) combined
with accuracy, Pediatric Emergency Care Applied Research Network
(PECARN) OR Clinical Decision Support Tool (CDST). Studies showing the
diagnostic accuracy of the PECARN rule in children younger than 18 years
of age with minor BHT were included. Results: 13 studies were included
in the present analysis. Pooled sensitivity of 0.08, (95% confidence
interval of 0.074 - 0.087), pooled specificity of 0.20 ( 95% CI of
0.196 - 0.213) and diagnostic odds ratio of 0.004 (95% CI of
0.000-0.1666) was in <2 years of age. The overall sensitivity
of 0.07, specificity of 0.66, and diagnostic odds ratio of 0.54 (95% CI
of 0.10 -2.78) was seen in ≥2 years of age. Overall sensitivity of 0.13
(95% CI 0.12-0.14), specificity of 0.81 (95% CI 0.80-0.82) and
diagnostic odds ratio of 0.79 (95% CI of 0.08 -7.71) was in 0-18 years
of age. Conclusion: The present analysis indicates the PECARN decision
tool as an accurate CDST in low-risk minor blunt head trauma cases in
children below two years of age and can become a useful tool in reducing
Head CT’s scan overuse in pediatric emergency departments.
Abdominal Ultrasound and its diagnostic accuracy in diagnosing Acute Appendicitis: A Meta-Analysis
Authors: Fu Jian , Zhou Xu , Chen Liang , Lu Sheng
Published: May 2021

Background: Acute appendicitis (AA) is a common cause for abdominal pain
encountering unnecessary surgeries in emergency departments. The present
meta-analysis aims to assess the accuracy of abdominal ultrasound in
suspected acute appendicitis cases in terms of sensitivity, specificity,
and post-test odds for positive and negative results. Materials and
Methods: An extensive and systematic search was conducted in Medline
(via PubMed), Cinahl (via Ebsco), Scopus, and Web of Sciences from 2010
till the end of March 2021. Two authors analyzed studies for inclusion,
collected results, and conducted analyses separately. The
histopathological study on tissue collected during appendectomy served
as the gold standard for determining the final diagnosis. The accuracy
was determined by evaluating sensitivity, specificity, positive
predictive value (PPV), negative predictive value (NPV), diagnostic odds
ratio. Results: Out of 3193 references, a total of 18 studies were
selected. Overall sensitivity of 77.2% (95 % CI – 75.4 – 78.9%) and
specificity of 60% (95 % CI – 58% – 62%) were observed. The
diagnostic odds ratio of 6.88(95 % CI 1.99 – 23.82) was obtained.
Conclusion: Abdominal ultrasound shows significant accuracy of diagnosis
in patients with suspected acute appendicitis.
Complete surgical revascularization: different definitions, same impact?
Authors: Oliveira Paulo , Madeira Márcio , Ranchordas Sara , Marques Marta , Almeida Manuel , Sousa-Uva Miguel , Abecasis Miguel , Neves José
Published: May 2021

Abstract Objectives: There are several different definitions of complete
revascularization on coronary surgery across the literature. Despite the
importance of this definition there is no agreement on which one has the
most impact. The aim of this study was to evaluate which definition of
complete surgical revascularization correlates with early and late
outcomes. Methods: All consecutive patients submitted to isolated CABG
from 2012 to 2016 with previous myocardial scintigraphy were evaluated.
Exclusion criteria: emergent procedures and previous cardiac surgery
procedures. Population of 162 patients, follow-up complete in 100%
patients; median 5,5 IQR 4,4-6,9 years. Each and all of the 162 patients
were classified as complying or not with the four different definitions:
Numerical, Functional, Anatomical Conditional and Anatomical
unconditional. Univariable and multivariable analyses were developed to
detect if any definition was a predictor of perioperative and long-term
outcomes. Results: Complete functional revascularization was a predictor
of increased survival (HR 0.47 CI95: 0,226-0,969; p=0.041). No other
definitions showed effect on follow-up mortality. Age and cardiac
dysfunction increased long-term mortality. The definition of complete
revascularization did not have an impact on MACCE or need for
revascularization Conclusions: An uniformly accepted definition of
complete coronary revascularization is lacking. This research raises
awareness about the importance of viability guidance for CABG.
Spatial pattern formation and delay induced destabilization in predator-prey model with fear effect
Authors: Mishra Swati , UPADHYY RANJIT
Published: May 2021

Recent field experiments showed that predators influence the prey
population not only by direct consumption but also by stimulating
various defensive strategies. The cost of these defensive strategies can
include energetic investment in defensive structures, reduced energy
income, lower mating success, and emigration which ultimately reduces
the reproduction of prey. To explore the effect of these defensive
strategies (anti-predator behaviors), a modified Leslie-Gower
predator-prey model with the cost of fear has been considered. Gestation
delay is also incorporated in the system for a more realistic
formulation. Boundedness, equilibria and stability analysis of the
temporal model are studied. By considering gestation delay as a
bifurcation parameter, the existence of Hopf-bifurcation around the
interior equilibrium point is discussed together with the direction,
stability and period of bifurcating solutions arising through
Hopf-bifurcation. The spatial extension of the proposed model
incorporating density-dependent cross-diffusion is also investigated and
the conditions for diffusion-driven instability are obtained. To
illustrate the analytical findings, detailed numerical simulations are
performed. Biologically realistic Turing patterns as hexagonal spots,
spots and stripes mixture, and labyrinthine type patterns are
identified. It is found that the fear level has a stabilizing impact on
delay induced destabilization and both stabilizing and destabilizing
effects on Turing instability.
From COVID-19 or because COVID-19?
Authors: Dato Guglielmo Actis
Published: May 2021

Infections and pandemics will condition us in an increasingly
predominant way regarding diagnostic, medical and surgical activities in
all specialist areas; and this particularly in cardiovascular one.
Nevertheless in the future the need to cohabit with pandemic events and
to be able to continue an elective and not only emergency cardiac
surgery program represents an imperative.
The Meaning of Constructivist Approach in Mediation and the Role of the Mediator
Authors:   Latvia University of Life Sciences and Technologies, Portere Viktorija , Briede Baiba ,   Latvia University of Life Sciences and Technologies
Published: May 2021

The process of overcoming a conflict in mediation using constructivist ideas is revealed in the study. A mediator’s roles in the frame of the constructivist approach represent the topicality of the study. The mediator’s role is analysed and the emphasis is on the constructivist frame. The mediator’s pedagogical role is in the centre of the study. In the process of the study, the aim was to find out theoretical explanations of the meaning of the constructivist approach in mediation, how it occurs and what is the role of mediator in the mediation process based on dialogue? The methodology of the study comprises a theoretical assessment of the role of the mediator based on a constructivist approach with a purposeful emphasis on a dialogue between parties. The mediator facilitates a dialogical mediation process being also a pedagogue who helps the parties to learn how to keep a dialogue. Analysis of the mediator’s role and the usage of D.A. Kolb’s learning types in the stages of mediation are the main results of the study. The significance of the study implies a substantiation of various roles of the mediator, constructivist approach with the emphasis on the dialogue and implementation of D.A. Kolb’s learning types in the stages of mediation.
Identification of Transferable Competencies and their Impact on the Paradigm Change in Higher Education in the 21st Century
Authors:   Czech University of Life Sciences Prague, Smékalová Lucie , Sněhotová Jiřina ,   Czech University of Life Sciences Prague, Jordánová Barbora ,   Czech University of Life Sciences Prague, Institute of Education and Communication
Published: May 2021

The article presents the results of a qualitative research of an Erasmus+ KA201 project “CATCH 21st Skills – Changing the Approach to Teaching in Higher Education”. The main method used in the research was a semi-structured interview led with six human resources (HR) managers of six Czech private companies. The aim of the qualitative research was to find answers to the question: Which transferable competencies are the most important for the graduate's successfulness in the labour market? After completing the interviews, the research team was able to link the concrete 21st century skills with four competence areas (sub-themes), to identify the two most important clusters of competencies (communication and collaboration) which are the most important for the employers. Secondly, the research team members found out what changes in educational paradigm would bring benefits for actual demands of job market. The conclusion of the paper offers ways and tools for development competencies among university students and it brings the description of the thesis for transforming the educational paradigm.
A Word of Caution to Students: Public Accountant Perceptions of Alternative Work Arrangements
Authors: Knight Margaret E. , Taylor Regina M.
Published: May 2021

This study provides updated insights regarding attitudes and beliefs about alternative work arrangements (AWAs) in public accounting so that educators are equipped with current empirical analysis to advise students on how to successfully navigate work-life balance in public accounting. We examine current attitudes and beliefs about AWAs by surveying public accountants from firms of various sizes on different dimensions of AWA support and asking firm partners to provide advice for students. Respondents indicated more agreement with the benefits of AWAs than they did with the perceived costs to the organization and to the participants' future career. Collectively, results suggest attitudes regarding AWAs may be more positive than in the past. Results identify significant differences in the perceptions about AWAs between females and males, as well as AWA participants and nonparticipants. Qualitative results are consistent with general support for AWAs but also provide cautionary advice to students.
Creating a Modified Monopoly Game for Promoting Students' Higher-Order Thinking Skills and Knowledge Retention
Authors: Kuang Tan Ming , Adler Ralph W. , Pandey Rakesh
Published: May 2021

This study modifies a popular business simulation game, Monopoly, to assess its effectiveness as a learning and teaching tool for helping high school accounting students acquire and apply foundational accounting concepts. The study compares an accounting-focused, Modified Monopoly simulation game with two other instructional methods. Using a quasi-experimental approach that involves three learning groups with random assignment of treatments based on school/class, a sample of 144 accounting students was obtained. This study found students using Modified Monopoly showed significantly greater improvement between their pre- and post-test scores than students in Computer-assisted instruction (CAI), but significantly less improvement than a paper-based extended accounting problem (EAP). However, students using Modified Monopoly, similar to CAI students, did not suffer the same significant decay in knowledge as students in EAP. These results offer evidence for the significant and more enduring learning benefits that Modified Monopoly can produce in students' higher-order thinking skills.

Data Availability: Data are available upon request.
Analisa Pemanfaatan dan Peran Software Open-source bagi Mahasiswa Universitas Abdurrab
Authors: Salamun Salamun , Sukri Sukri
Published: May 2021

Abstract. Analysis of Software Utilization and the Role of Open-source for Abdurrab University Students. Open-source software can be acquired by downloading it for free from the internet, where the software code is published to the public or internet users. Generally, people will fix the software weaknesses and modify its display or language. Then, the repaired software is uploaded and published back to the internet. At the same time, other people will also download this open-source software application and fix other flaws. The purpose of this study was to determine the benefits and roles of open-source software for Abdurrab University students. The results of this study indicate an increase in student interest in using open-source applications and the influence, utilization, and role of open-source software for Abdurrab University students. The conclusion in this study is that open-source software still plays an important role for students because it is very helpful in various aspects to support learning.Keywords: Internet, Software, University of Abdurrab, open-source Abstrak. Open-source software dapat dimiliki dengan cara mengunduh secara gratis dari internet, yang mana kode software dipublikasikan ke publik atau pengguna internet. Umumnya, orang akan memperbaiki kelemahan-kelemahan software tersebut dan memodifikasi tampilan atau bahasanya. Lalu, software yang diperbaiki tersebut diunggah dan dipublikasikan kembali ke internet. Pada saat yang sama, orang lain juga akan mengunduh aplikasi software open-source ini dan memperbaiki kelemahan-kelemahan lain. Tujuan dari penelitian ini adalah mengetahui manfaat dan peran open-source software bagi mahasiswa Universitas Abdurrab. Hasil penelitian ini memperlihatkan adanya peningkatan minat mahasiswa dalam menggunakan aplikasi open-source dan pengaruh, pemanfaatan, serta peran software open-source bagi mahasiswa Universitas Abdurrab. Kesimpulan pada penelitian ini ialah open-source software masih berperan penting bagi mahasiswa karena sangat membantu dalam berbagai aspek untuk mendukung pembelajaran.Kata Kunci: Internet, Software, Universitas Abdurrab, open-source