bluuebunny/crossref_metadata_2025 huggingface dataset:
Diferencias en los estilos de negociación sexual y autoeficacia en el uso del condón en hombres y mujeres universitarios de Querétaro, México, 2018
Authors: Palacios-Delgado Jorge Raúl , Ortego-García Nuria
Published: March 2020

Objetivo: comparar los niveles de negociación sexual y autoeficacia en el uso del condón masculino en hombres y mujeres. Materiales y métodos: estudio transversal de tipo comparativo en el que se incluyeron estudiantes de licenciatura de una universidad privada de la ciudad de Querétaro, México, durante el año 2018. Muestreo no probabilístico. Se midieron: características sociodemográficas, conductas sexuales de riesgo, habilidades de negociación y autoeficacia sexual para uso de condón. Se compararon los grupos mediante la prueba U de Mann Whitney y el análisis de varianza no paramétrico (Kruskal-Wallis). Resultados: ingresaron 270 estudiantes, el 89,6 % de los universitarios tiene vida sexual activa, la edad promedio de inicio de vida sexual es a los 15,41 años; el promedio de parejas sexuales reportado es de 4,2. El 27,8 % ha usado condón en cada relación sexual. Se encontraron diferencias entre hombres y mujeres en los estilos de negociación sexual en los dominios de evitación (p = 0,04) y acomodación (p < 0,00), con puntajes más altos para los hombres en comparación con las mujeres. Respecto a la autoeficacia en el uso del condón, las mujeres son quienes puntúan más alto (p < 0,001). Conclusiones: los jóvenes universitarios entrevistados tienen conductas sexuales de riesgo. Se requiere fortalecer las políticas públicas que faciliten la prevención de la conducta sexual de riesgo dirigidas a la población estudiantil. Es necesario realizar más estudios sobre intervenciones que fortalezcan las habilidades de negociación y la autoeficacia sexual en adolescentes.
Evaluación de la eficacia y seguridad de la monoterapia con cloroquina para tratar malaria gestacional aguda no complicada debida P. vivax, Córdoba, Colombia, 2015-2017
Authors: Castro-Cavadía Carlos J. , Carmona-Fonseca Jaime
Published: March 2020

Objetivo: determinar la eficacia y seguridad de la monoterapia con cloroquina en gestantes colombianas con ataque agudo no complicado de malaria vivax (MGV). Materiales y métodos: estudio de cohorte prospectiva en pacientes gestantes que consultaron de manera espontánea entre 1 febrero de 2015 y 31 diciembre de 2017 a los puestos de malaria o de control prenatal en dos poblaciones de Colombia, en quienes se confirmó el diagnóstico de Plasmodium vivax mediante gota gruesa y qPCR (quantitative polymerase chain reaction). Se midieron variables sociodemográficas, falla terapéutica (FT) y eventos adversos serios a los 28 días y la frecuencia de recurrencia-recaída (RR) con seguimiento de 120 días. Se aplicó el protocolo de la OMS para evaluar la eficacia de monoterapia con cloroquina (m-CQ). Resultados: se captaron 47 gestantes; en el seguimiento de 28 días no hubo pérdidas y hubo 4,2 % (2/47) de FT. En el seguimiento de 45 mujeres entre los días 29 y 120 hubo 11 pérdidas (24,4 % = 11/45) y 13 RR con frecuencia que varió entre 29 y 53 % según el tipo de análisis. Conclusiones: la cloroquina conserva muy alta eficacia para curar el ataque agudo de malaria vivax en malaria gestacional (MG) en Colombia, y continúa siendo una buena opción para el tratamiento de la fase aguda. La frecuencia de RR es alta. Se requieren estudios que evalúen alternativas terapéuticas en la MG. Hay urgente necesidad de disponer de medicamentos o procedimientos que reduzcan ese altísimo riesgo.
Sağlıkta Dönüşüm ve Direnme Pratikleri: Tuzluçayır Halk Sağlığı Günleri
Authors: AKGÜN Ceylan Nur
Published: March 2020

Mamak, Tuzluçayır bölgesinde gerçekleştirilen bu etnografik çalışmada, sağlık sisteminde

yaşanan neoliberal dönüşümün yerel ve mikro ölçekteki tezahürleri araştırılmıştır. Halkevlerine

gelen ve bu mekanla ilişkilenen kadın ve erkeklerin deneyimleri üzerinden neoliberal sağlık

söyleminin yansımaları izlenmiştir. Halkevleri çevresinde örgütlenen ücretsiz sağlık hizmeti

çalışmaları, iktidarın biyopolitik rejimine alternatif olarak üretilen yeni çözüm taktikleri, direnme

ve dayanışma deneyimleri olarak değerlendirilmiştir. Sağlık hizmetlerinin giderek piyasaya tabi

olması ve büyüyen “sağlıklı olma söylemi”ne karşın, yerel örgütlerin hekimler ve sağlık

personeliyle işbirliğine girerek ücretsiz halk sağlığı eğitimleri yaptığı uygulamalar başlıbaşına

iktidarın sağlık alanındaki stratejilerine karşı bir tür taktik ya da mikrodireniş olarak

düşünülmüştür. Çalışma, etnografik yöntemlere yaslanarak halkevleri ile ilişkilenen Tuzluçayır

sakinlerinin sağlık sistemini nasıl ele aldıklarını ve onunla nasıl ilişkilendikleri anlamak üzere

geliştirilmiştir. Ergenlik dönemi psikolojisi, cinsiyetler arası rol paylaşımı, ebeveynlik

tutumlarıyla ilgili yapılan psikoeğitimler sırasında iktidar ile kolektif kimlikler ilişkisinde her an

müzakere edilen, direnme ve teslim olma arasında gidip gelen ilişkinin yansımaları izlenmiştir.

Biyopolitik söylemin izlerini sürmek amacıyla başlayan bu saha deneyimi, her yerde olan ve

herkesi denetleyebilen iktidara rağmen, düşünen, eyleyen ve direnen öznelerin özgürleşme

kapasitesini de gösterir. Tuzluçayır Halkevi, sistem içinde çözüm arayıp eli boş dönenlerin

sorunlarını çözmeye çalışan yerel ve mikro ölçekte kurulan bir oluşum olarak hem bir

dayanışma hem de direniş, mücadele hattı olarak değerlendirilebilir
“Çerçeve”nin Ötesi: Mültecinin Görsel İmgesinde Kaybın Yokluğu
Authors: TOKSOY N. Gamze , ZEYBEK Deniz , AKDOĞAN Berna
Published: March 2020

İnsanların savaşlar, siyasal, ekonomik, sosyal vb. nedenlerle zorunlu yer değiştirmeleri veya göçü günümüzde kitleleri etkileyen bir soruna dönüşmüştür. Hem niceliği hem de etkilediği coğrafi alanın büyüklüğüne işaret edilerek çoğu zaman “mülteci krizi” olarak adlandırılan insan hareketliliği, beden politikalarını ve ayrımcı pratikleri yeniden tartışmaya açmayı gerekli kılmaktadır. Zira, yaşam alanlarını terk ederek tehlikeli yollardan daha güvenli algılanan ülkelere doğru hareket eden topluluklar, ağır insan hakları ihlallerine maruz bırakılmaktadırlar. Göç yolunda hayatta kalma mücadelesini başarsalar bile sonrasında, mülteci kimliğinin getirdiği zorluklarla karşı karşıya kalmaktadırlar. Mültecilerin çeşitli şekillerde maruz kaldıkları ötekileştirici tutum ve davranışların beslendiği ortamın yaratılmasında görsel imgelerin rolü vardır. Bu metinde ilkin, mültecinin bedeninin medyada yaygın dolaşıma giren görsel imgeleri ile beden politikaları arasındaki bağlar tartışmaya açılmaktadır. Belli bir çerçeve içinde tekrarlanan ve mültecileri toplumsal soruna indirgeyen algıyı kuvvetlendiren görsel imgeler, biopolitikaya dair kavramlar aracılığıyla sorgulanmaktadır. Böylece, görsel imgelerdeki ortaklıkların bedenlere yönelik politikalarla ilişkisi makro perspektifle ve kavramsal olarak ele alınmaktadır. Ardından metinde, göç edenlerin yaşadıkları şiddetin, kaybın görsel temsiline dair alternatif yaklaşımlar geliştirmenin önemine işaret edilmektedir. Günümüz medyasının aynılaşan temsil biçimleri eleştirilirken, karşı temsilin mümkünlüğü sorgulanmakta ve mevcut görsel rejimin belirlediği çerçevenin ötesinde düşünmenin, tartışmanın imkanları araştırılmaktadır. İzleyiciye sunulan acılı yaşamlar olmanın ötesinde, kaybı yaşayanların kendi hikâyelerini aktarmanın yollarından birini açan Arpillera örneği bu bağlamda ele alınmakta ve görsel rejimin mutabakat alanının dönüştürülmesinin nasıl mümkün olabileceğine dair soruların uyarıcı örneği olarak değerlendirilmektedir.
Hastalığını Anlatmak, Dünyaya Doğru Açılmak, Dayanışmak ve Güçlenmek Üzerine: Kadınların Sözlerine Uğrayan Sağaltıcı Diyaloglar
Authors: BOZOK Nihan
Published: March 2020

Yaşamdaki diğer olaylar gibi hastalığın anlamı da hastalıkla birlikte gelmez. Anlamı, o hastalığa içkin değildir. Hastalık deneyimleri, sınıf ilişkileri, toplumsal ilişkiler ve tarihsel bağlamın etkisi altında oluşur. Hastalığın nasıl deneyimlendiği, diğer insanlarla yaşanan etkileşimlerde inşa edilir. Bu makale, kadınların hastalıklar etrafında kurduğu iletişim üzerinedir. Bu iletişimin izini, kadınların hastalık anlatıları ve hastalıklar üzerine düşüncelerini içeren, farklı tarihsel dönemlere özgü mektuplar, efsaneler, edebi metinler, hastalık günlükleri gibi kaynaklar aracılığıyla sürmektedir. Makale, kadınların hastalıklar etrafında ördükleri iletişimi, günümüz tıbbının hastayla diyalog kurmakta daha becerikli olabilmesi için değerli bir başvuru kaynağı olarak ele almaktadır. Hastalıklarını, bedenlerinin durumlarını, bunların esinlendiği duyguları anlatmak, kadınlar arası iletişimin ve kadınların kendi bedenleriyle ve dünyayla kurdukları ilişkinin her zaman önemli bir parçası olmuştur. Kadınlar mektuplarında, günlüklerinde ve ayak üstü sohbetlerinde sağlıklarından ve bedenlerinden bahsederler. Hastalıkla değişen gündelik hayatlarını anlatarak, yaşam tavsiyeleri paylaşarak, yüreklendirici yorumlarda bulunarak, birbirleri için hastalıkla biçimlenen yaşamı yeniden yorumlama imkânı yaratırlar. Hastalıklarını konuşarak, acılarını dünyaya doğru açmaktadırlar. Hastalıklar odağında kurulan bu diyaloglar, kadınlar arasında bir dayanışma zemini oluşturur. Bu makale, kadınlar arası iletişimin önde gelen konularından biri olan hastalıklarını anlatmak meselesinin, kadınları nasıl güçlendirdiğini tartışmaktadır. Makale, kadınlar arasında, farklı tarihsel dönemlere, farklı coğrafyalara ve sınıfsallıklara özgü olarak biçimlenen sağaltıcı diyalog kurma alışkanlığının, kadınların sözünü değersiz görme ve onları sessizleştirme eğiliminde olan modern tıp pratiği karşısındaki dönüştürücü gücünü göstermektedir.
Análisis de mixturas gaussianas de parámetros meteorológicos básicos: Temperatura y humedad relativa
Authors: Abdalah-Hernández Mariela , Rodríguez-Yáñez Javier , Alvarado-González Daniel
Published: March 2020

Se aplicó el modelado por mixturas gaussianas para describir la distribución anual de dos variables meteorológicas importantes, temperatura y humedad relativa, dentro del Valle Central de Costa Rica desde el 2010 hasta el 2017. Se utilizó un número fijo de componentes gaussianas para ajustar los datos a una curva de mixtura general que representara el comportamiento durante todo el año, esto se realizó a través de funciones específicas de las bibliotecas Scikit-learn y SciPy del lenguaje Python. Al modelar los datos de temperatura se obtuvieron valores bajos del error de aproximación y se observó una relación entre su distribución y la variabilidad horaria, estableciendo altas temperaturas alrededor del mediodía. Para la humedad relativa, el modelo de mixturas gaussianas presentó problemas en el ajuste de valores mayores al 90 %, como resultado del límite de saturación de esta variable en el 100 %. La relación respecto al tiempo no fue claramente determinada debido a la cantidad de componentes de la mixtura usadas para modelar la humedad relativa, pero se apreció una tendencia de valores bajos entre el final de la mañana e inicios de la tarde. La minimización iterativa del error fue considerada como una aproximación futura para alcanzar un mejor ajuste con mixturas gaussianas para estas y otras variables meteorológicas.
Propuesta para la comparación de flujos metabólicos
Authors: Arias-Méndez Esteban , Montero-Marín Alonso , Torres-Rojas Francisco J.
Published: March 2020

El análisis de flujos metabólicos puede proporcionar información importante para una mejor comprensión de la vida y todos sus procesos, beneficiando directamente a áreas como la medicina, la agronomía, la farmacia y otras. Algunas de las principales herramientas utilizadas para estudiar y analizar las rutas metabólicas se han basado en la idea de la comparación de rutas metabólicas, utilizando estructuras de datos como grafos. Algunas de esas tareas se consideran problemas computacionales difíciles. Por otro lado, esas comparaciones aún no han tenido en cuenta el flujo metabólico como parte de la vía o proceso metabólico. Es decir, considerar cuánta cantidad de un metabolito pasa a través de un sistema de reacción con el tiempo. Proponemos aquí una forma simple de comparar rutas metabólicas utilizando su información de flujo relacionada mediante un método simple de comparación de rutas metabólicas introducido en 2017 y ajustándolo a grafos ponderados. Los algoritmos analizan los grafos ponderados asociados de las rutas de flujo metabólico y proporcionan una puntuación rápida de sus similitudes de flujo en primer lugar y una lista de similitudes y diferencias entre las rutas de flujo dadas, enumeradas como rutas. Proporcionamos algunas ideas sobre el análisis a continuación para obtener un buen sistema de puntuación al comparar grafos ponderados relacionados con las rutas metabólicas en un cálculo de bajo costo.
Motus: Marco de trabajo para la clasificación de Captura de Movimiento humano en ambientes no controlados
Authors: Rodríguez-González Joselyn , Hernández-López María , Siles-Canales Francisco
Published: March 2020

Este trabajo presenta la propuesta para un marco de trabajo (Motus) basado en varios algoritmos, procesos y métodos para la clasificación de archivos de captura de movimiento. El objetivo es proveer un modelo generalizado para la clasificación de movimiento, el enfoque es defino bajo los siguientes pasos: recolección y limpieza de datos, pre-procesamiento de la información, selección de características, segmentación y la selección del modelo y la validación. Para casa uno de los pasos, se selección y evaluó algoritmos que han demostrado un buen rendimiento, en ambientes controlados, en estudios previos, todos ellos han sido probados en archivos BVH, pero no en ambientes no controlados.
Abordaje inicial en la clasificación de escenas de partidos de fútbol a partir de la distribución espacial de los jugadores sobre la cancha
Authors: Núñez-Meoño Lennon , Villalta Marco , Siles-Canales Francisco
Published: March 2020

El rastreo de jugadores de fútbol se inclina al uso de algoritmos de alto costo computacional, sin embargo, estos suelen ser implementados de manera pareja al video de interés sin consideración de los tipos de escena evaluada. El trabajo presente propone clasificar las escenas con respecto a la distribución espacial de los jugadores sobre el campo por medio de una métrica del nivel de dispersión de los jugadores, con la cual implementar métodos de rastreo flexibles en cuanto a la selección de algoritmos livianos para escenas de ‘buen carácter’, y algoritmos pesados y robustos para escenas de ‘mal carácter’. En investigaciones a venir, se pretende evaluar distintas métricas, como el uso de diagramas de Voronoi para el análisis del área superficial del espacio entre jugadores.
Generación de Datos de Validación para Rastreo Celular en Microscopía de Campo Claro usando Muestras Fluorescentes
Authors: Quinde-Cobos Patricia , Quirós Steve , Siles-Canales Francisco
Published: March 2020

Este trabajo usa imágenes de fluorescencia de células cancerígenas como para validación de resultados obtenidos por segmentación de imágenes de campo claro de células cancerígenas, ya que actualmente la validación consiste en la anotación manual de las imágenes originales.  Se usó reconocimiento de patrones y se inició con preprocesamiento de muestras fluorescentes para asegurar la detección de células, considerando área y valores de intensidad. Al segmentar las imágenes de fluorescencia el núcleo de cada célula es detectado, con su forma original. Al calcular la densidad de cada imagen, estas pueden ser agrupadas de acuerdo a su valor de densidad y usadas para la detección de células en muestras de campo claro.
Procrastination And Its Relationship With Business Students’ Cheating Perceptions
Authors: Elias Rafik Z.
Published: March 2020

The epidemic of college cheating is evolving to include more sophisticated schemes that are more difficult to detect. Business students’ cheating is even more concerning because such behavior in college predicts workplace cheating (Nonis & Swift, 2001). The current study examines procrastination as a personality variable that affects business students’ perceptions of cheating ethics. A survey of 370 undergraduate and graduate business students was conducted. The results showed that low procrastinators were more likely to view cheating actions as more unethical compared to high procrastinators. Low procrastinators also had higher academic performance.
El proceso de compostaje
Authors: Bohórquez Santana Wilson
Published: March 2020

El deterioro de las propiedades del suelo agrícola junto con el impacto ambiental motivaron la edición de este texto que aborda los factores físicos, químicos y biológicos indispensables para la transformación de la materia orgánica y por consiguiente la elaboración del compost
Kognitivno-vedenjska obravnava debelosti pri otrocih in mladostnikih
Authors: Klemenčič Simona
Published: March 2020

Debelost in čezmerna telesna teža pri otrocih in mladostnikih sta povezani s številnimi bolezenskimi stanji, nižjo kakovostjo življenja, čustvenimi težavami in težavami v vrstniških odnosih. Pri razvoju debelosti ima poleg genetskega materiala in osebnostnih značilnosti posameznikov ključno vlogo tudi širše družbeno okolje, otrokova družina in starševski vzgojni slog. Zato so terapevtski ukrepi pri obravnavi debelosti pri otrocih navadno vezani na celotno družino in skoraj vedno je pri tem potrebno sodelovanje z drugimi strokovnjaki, kot sta zdravnik in prehranski strokovnjak. V prispevku so predstavljena glavna načela kognitivno-vedenjske obravnave otrok z debelostjo ter najpogosteje uporabljene tehnike. Opisane tehnike naj bi bile del celostne individualne ali skupinske kognitivno-vedenjske terapije otroka s čezmerno telesno težo oz. debelostjo in njegove družine, nekatere pa so uporabne tudi posamezno in lahko veliko prispevajo h klasičnim oz. konservativnim programom za obravnavo debelosti. Pri mlajših otrocih se osredinimo predvsem na delo s starši in na vedenjske tehnike, medtem ko lahko pri mladostnikih že uporabljamo kognitivne tehnike, ki so bile razvite pretežno za odraslo populacijo.
Identification of Protease-Producing Halophilic Bacteria Isolated from Salt-Pond Soil
Authors: Prihanto Asep Awaludin , Nurdiani Rahmi , Muyasharoh Hidayatun , Afifah Jauharotul
Published: March 2020

HighlightsThe halophilic bacteria were isolated from salt-pond soil.Isolate C2 was identified as the best protease producer.Isolate C2 was identified as B. amyloliquefaciens strain UBCAbstractProtease is an important enzyme for various industries, such as pharmaceuticals, leather production, meat processing, protein hydrolyzate, food products, and waste processing industries. This study aimed to isolate and identify protease-producing bacteria isolated from salt-pond soil at the Tuban Regency, East Java, Indonesia. Bacterial communities in the soil samples were firstly isolated from the soil samples by culture-dependent technique on Luria Bertani agar enriched with 5% NaCl. Thereafter, bacterial colonies that grew on the media were purified and screened for their protease production using a skim-milk agar. The bacterial colony which produced protease was further identified using phenotypic (gram staining) and genotypic assays (the 16S rDNA sequence). The result showed that one isolate out of six (isolate C2) obtained from the soil sample was observed to produce a protease enzyme. Based on its 16S rDNA sequence, the isolate was identified as Bacillus amyloliquefaciens strain UBC. These results suggest that B. Amyloliquefaciens strain UBC is a salt-tolerant bacterium (halophilic bacteria) which has the potential to be further developed for protease-producing biological agents.
Numerical Modeling of Tidal Current Patterns Using 3-Dimensional MOHID in Balikpapan Bay, Indonesia
Authors: Hermansyah Hadi , Sari Ningsih Nining , Nabil Nabil , Tarya Ayi , Syahruddin Syahruddin
Published: March 2020

HighlightsThe results of the model and observation showed the similarity of the amplitude and phase formedAt the highest tide was in the position above the Sea Mean level and the current velocity was lower than when heading to the tideThere was a difference in the direction of the current when heading towards high tideStratification of the water column in both seasons tended to be classified in well-mixed watersAbstractBalikpapan Bay is significant as a link between the cities within and outside of East Kalimantan by becoming the primary path used for local transportation and distribution of produced goods. The various anthropogenic activities increased liquid wastes and debris, which flowed through channels and rivers along the bay. This study aimed to determine tidal current patterns in Balikpapan Bay and its influence on salinity and temperature distributions. This study applied a baroclinic three-dimensional (3D) hydrodynamic model, employing wind, tides, and density variations, resulting from the differences of temperature and salinity, as the model input. To simulate the tidal current flow, we applied MOHID Water Modeling System, which the tidal current patterns depicted current directions and speeds at the different tidal conditions. During the displacement toward the high tidal condition, the water mass moves northwestward entering the river body, while at the displacement toward the low tidal condition, the water mass moves southeastward, which flows toward the coast and without the bay. The current speed varies at certain tidal conditions. At the highest tidal condition, the surface elevation ranged 1.3 - 1.5 m above mean sea level; the current rate is lower compared to the displacement toward high tidal condition, which ranged from 0.01 - 0.15 m/s. At the lowest tidal condition, the surface elevation reached 1 - 1.2 m below mean sea level, and the weaker flow velocity took place (less than 0.15 m/s). The results also showed that the water mass temperature tends to be higher in the inner part of Balikpapan Bay, the Balikpapan Bay waters profile that is increasingly shallow towards the bay head also causes this area to tend to have a higher temperature. Also, areas located on the inside of the bay tend to get more freshwater input from rivers, so this area has lower salinity while the area located at the mouth of the bay tends to be of higher salinity because it gets a lot of mass input of seawater from the Makassar Strait.
Development of Primary Cell Lines from Gill, Kidney, Spleen and Caudal Fin of Common Carp (Cyprinus carpio)
Authors: Insariani Insariani , Trisniaty Trisniaty , Riatmono Freddy , Ghani Abdul
Published: March 2020

HighlihgtDevelop primary cultures derived From  tissue tails fins, gills, kidney and spleen from local Indonesian carp (Cyprinus carpio).Primary culture cell with L15  Mediacell cultures  consist of two type Fibroblast-like and epithelial –like cell AbstractThe fish cell lines technology have been developed for the interests of the fisheries world. This study aimed at developing a primary cell line from gill, kidney, spleen, and caudal fin of a common carp (Cyprinus carpio). A healthy common carp weighing 20 g (~1 month) was collected from the Cijeruk Fish Seed Center, Bogor. The development of primary cell lines from the gill, fin, tail, kidney and spleen tissue was performed in cell culture medium Leibovitz’s L-15 supplemented with 20% serum fetal bovine, 250 IU Penicillin, 250 µg / ml kanamycin sulfate and 2Mm L-Glutamine, and incubated at 28°C. Primary cell lines of caudal fin and gill began to form a monolayer on day 17 after culture. While the development of cell lines from kidney and spleen, although the initiation of cells and cells spread on the surface into a monolayer, was not perfect; therefore, the passage was unable to be done. Microscopic observations and Giemsa staining showed primary cell lines of caudal fin and gill based on cell morphology consisted of two cell types, fibroblast-like cells and epithelial-like cells. The first passage was done on day 17 when the confluence was more than 50%. The next passage was carried out every 3 weeks when confluence reached 70% -80%. The primary cell culture of gill was successfully passaged as much as 72 and the caudal fin was successfully passed as much as 89 times over 7 years. These new cell lines can be further used to propagate fish viruses and other biotechnology assays.
Effect of Coconut Leaves, Coconut Palm (Cocos nucifera) as Artificial Bait on the Catch of Fish Traps at Telaga Batin Water, Terengganu
Authors: Azahari Muhammad Azfar , Hasan Marina , Hajisame Sukree , Nik Ali Nik Aziz , Abd Aziz Mohd Fazrul Hisam
Published: March 2020

Highlight1.     Coconut leaves, as artificial bait on the catch of fish traps2.     Coconut palm as artificial bait on the catch of fish traps3.     Fish species and bycatch species in traps with different baitsAbstractFish trap is one of the most frequently used fishing devices by people around the world. The purposes of this study are to determine fish species and bycatch species in traps with different baits such as coconut leaves, regular fish bait, and without bait at Telaga Batin waters. Coconut leaves from coconut palm, (Cocos nucifera) were used as artificial fish bait, replacing normal live bait. Nine traps with the size of 4 m x 2 m x 6 m of steel structure framed with galvanized wire mesh of 1.5 inches were immersed for 48 hours at different depth (15m, 20m and 25m). The whole procedure was repeated four times with a total of 20 types of species and 132 individuals in total were caught. One-way ANOVA was chosen to analyze data collected. The value calculated was not significant for fish traps with coconut leaves (P >0.168) compared to fish traps with normal live bait (P <0.022), the devices with artificial bait were able to catch several cuttlefishes. Individually, traps with normal bait were able to get more species, but in terms of species value, traps with coconut leaves have the advantage as cuttlefish being more valuable in the market compared to certain demersal fishes.
Experimental Investigation of Thermal and Hydraulic Characteristics of Finned Flat Tubes of the Oil Air Cooling Device
Authors: Tiunov S. V. , Skrypnik A. N. , Marshalova G. S. , Gureev V. M. , Popov I. A. , Kadyrov R. G. , Chorny A. D. , Zhukova Y. V.
Published: March 2020

Air cooling devices are heat exchange units that are widely used in practice. However, they have a number of disadvantages due to the low value of the heat transfer coefficient from the air and the high resistance of finned tube bundles, which leads to large dimensions and the metal content of the device itself, to the need to develop a high power ventilator drive, but also to the need to demonstrate reduced energy efficiency. The objective of the present work is to determine optimal geometric sizes of finned flat heat exchange tubes manufactured by the techniques of extrusion and deforming cutting that reduce the weight and size characteristics of the heat exchange section of air cooling devices. The experimental studies of seven various samples of heat exchange sections, being different in fin pitch and height, tube section width, flat tube height and a number of inner channels, have determined the performance of each section with the use of the following criteria: thermal power, thermal efficiency, specific thermal heat transfer resistance, M. V. Kirpichev and V. M. Antuf’ev’s criteria. The obtained experimental data and the analysis of the passive method of enhancement in the near-wall area of the heat transfer surface finned by deforming cutting has shown that sample No 5 has maximum value of the performance criteria when the maximum height of a fin is 0.008 m and the minimum pitch of a fin is 0.0025 m over the investigated sample range. Thus, when the sizes of an oil air cooling device are maintained by using the amended heat transfer section of sample No 5, the amount of removed heat can be increased or the mass and dimensions of the device can be decreased while maintaining thermal power and, as a result, the power consumption for pumping can be decreased and the thermal-hydraulic performance of the device as a whole can be increased.
Study of the influence of paper parameters on quality rizographic printing
Authors: Yudenkov V. S. , Sulim P. Y.
Published: March 2020

Creation of new digital technologies let automate the reproduction of text and graphic information, led to the creation and development of the digital printing. Digital printing is a technology for producing prints in the printer based on the original layout, created as corresponding codes with a computer. One of the technologies of digital printing is a computer-to-press and one of the devices in this direction is risograph. The risograph printing quality is worse than offset printing. The text is printing with medium sharpness and images remind photos in old newspapers and require special preparation. But risograph is the most profitable solution for small and medium circulations from 50 up to 1000 sheets. Wide usage of risograph printing in typographies demands increase performance of the equipment with the high print quality of digital images. To improve the quality of risographic printing, the creation of methods is required to form the initial indicators of the original layout (clarity, correct transmission of halftones, contrast). At the same time, the result of obtaining high-quality images obtained by printing on a risograph is affected by surface microgeometry and the physical and mechanical properties of paper. So, the optical density of the ink layer on the print is largely determined by the structure of the sections of paper, in particular, absorbency and porosity. To obtain high-quality images on prints, it is necessary not only to customize the original layout, but also to select paper with such characteristics that would allow you to get the best result when printing on a risograph. Since the risograph occupies an intermediate place in quality between copying equipment and laser printing, a laser print is taken as the standard for print quality. And one of the tasks of the quality of risographic prints is to increase it to the quality of laser printing.
Features of construction of evaluation algorithms multidimensional random processes
Authors: Lobaty A. A. , Bumai A. Y.
Published: March 2020

The problem of evaluating the information which is present in random signals from various sources-meters is considered. It is assumed that the random process which is evaluated and the meter output according mathematical description of the problem are vector random processes. In this case, the dimension of the vector of the measurement can be larger than the dimension of the vector of the process being evaluated. The analysis of analytical methods and algorithms of the estimation that based on the determination of the main probabilistic characteristics of a random process by both the a priori and the a posteriori methods with various optimality criteria is carried out. Based on the analysis, the problem of complexing of the meters of the random process is considered according the proposed criterion for the maximum of posterior verisimilitude, combining the criterion of maximum verisimilitude and the criterion of maximum the a posteriori probability, general methodology complexing is developed. Proposed example of the complexing shows the efficiency of the proposed method. This approach to the construction of the algorithms of the evaluation for multidimensional random processes allows to increase the accuracy of estimation, since it takes into account additional information and its complex processing.
Interdisciplinary structury analysis systems in the field of artificial intelligence technologies
Authors: Loiko A. I.
Published: March 2020

The article discusses the methodological strategies of integrated computer logistics in the field of artificial intelligence, focused on the tasks of the cognitive economy. The mechanism of the methodological synthesis of disciplinary structures into the system of cognitive sciences and the advantages research programs arising from this mechanism are shown.
Adaptive mobile application for the CATS learning system
Authors: Popova Y. V. , Lehchylin I. V.
Published: March 2020

Using mobile devices around the world has already become commonplace. There are a huge number of applications that greatly simplify everyday life: from simple planning of actions and events to paying for goods by simply touching the terminal with a mobile device. That is why the problem of introducing a mobile training application into the educational process is quite relevant. The purpose of this study is to increase the efficiency of the learning process through the use of the adaptive mobile application CATS. The proposed adaptability algorithm will allow you to create a unique training program that will build on existing knowledge and the level of perception of learning material for students. It is proposed to use the analysis of expert systems as mathematical methods. By formalizing the intellectual processes that are carried out by both the teacher and the student, it is possible to automate a certain part of the teacher’s functions, reduce manual labor costs, which will make it

easier to control the educational process, as well as make the learning process more effective. The software of the mobile application was created in the environment of Microsoft Visual Studio Community (Mac) in C# programming language and Xamarin framework. The proposed development is implemented in the educational process of the Belarusian National Technical University, covers all the main components of the learning process, including working with electronic educational and methodical complexes, passing tests, downloading the required information. The mobile application allows you to adapt to various sizes of devices, implemented using modern technologies with adaptation for Android and iOS operating systems.
ANALYSIS ON THE EFFECTIVENESS OF “UNBUNDLING” AND “OPEN ACCESS” IN INDONESIAN GAS BUSINESS SECTOR
Authors: Aritonang Parulian Paidi
Published: March 2020

Natural gas is a very important non-renewable natural resource that controls the lives of many people. Therefore, the exploitation and utilization of natural gas must be carried out wisely and for the greatest prosperity of the people. This is mandated in Article 33 Paragraph (3) of the 1945 Constitution of the Republic of Indonesia that "Earth, water and the natural resources contained therein are controlled by country and used for the greatest prosperity of the people". With the promulgation of Law Number 22 the Year 2001 concerning Oil and Gas, there has been restructuring in the implementation of natural gas exploitation through pipelines in Indonesia. The law provides more space for private entities to engage in gas exploitation with the purpose to create healthy competition, transparency, improving national development, efficiency in exploiting natural gas and to develop competitive price so that the end consumer can enjoy the benefits. By its implementing regulations, namely, the Regulation of the Minister of Energy and Mineral Resources Number 19 of 2009, natural gas exploitation through pipelines is carried out through an “unbundling” and “open access” mechanism.
Prevención y control de la infección por coronavirus SARS-CoV-2 (Covid-19) en unidades de hemodiálisis
Authors: Vega-Vega Olynka , Arvizu-Hernández Mauricio , Domínguez-Cherit José Guillermo , Sierra-Madero Juan , Correa-Rotter Ricardo
Published: March 2020

La pandemia del SARS-CoV-2 representa un riesgo especial para los pacientes en hemodiálisis crónica por su estado de inmunosupresión, edad avanzada y coexistencia de comorbilidades importantes, en particular patología cardiovascular, diabetes mellitus y otras. Adicionalmente, esta población constituye un conglomerado cerrado ya que los pacientes acuden a tratamiento con regularidad y permanecen horas en los lugares de tratamiento, expuestos a una posible adquisición de la infección. El hecho de acudir necesaria y regularmente a su tratamiento impide que permanezcan en aislamiento domiciliario y con exposición potencial en el traslado. Las presentes recomendaciones resumen las intervenciones propuestas por tres organizaciones internacionales, a las que se agregan algunas sugeridas por expertos nacionales, con el objetivo de identificar precozmente a los pacientes y personal de la salud en riesgo para disminuir el riesgo de infección.
Sarcopenic obesity and associations with mortality in older women and men – a prospective observational study
Authors: von Berens Åsa , Obling Sine R , Nydahl Margaretha , Koochek Afsaneh , Lissner Lauren , Skoog Ingmar , Frändin Kerstin , Skoglund Elisabeth , Rothenberg Elisabet , Cederholm Tommy
Published: March 2020

Background: The combined effect of sarcopenia and obesity, i.e., sarcopenic obesity, has been associated with disability and worse outcomes in older adults, but results are conflicting. The objectives of this study were to describe the prevalence of sarcopenic obesity (SO) in older adults, and to examine how the risk of mortality is associated with SO and its various components. Methods: Data were obtained from two Swedish population studies, the Gothenburg H70 Birth Cohort Studies of 521 women and men at the age of 75, and the Uppsala Longitudinal Study of Adult Men (ULSAM), which included 288 men aged 87 years. Sarcopenia was defined using the recently updated EWGSOP2 definition. Obesity was defined by any of three established definitions: body mass index ≥30 kg/m2, fat mass >30%/ >42% or waist circumference ≥88 cm/≥102 cm for women and men, respectively. The Kaplan-Meier survival curve and the Cox proportional hazard model were used for 10-year and 4-year survival analyses in the H70 and ULSAM cohorts, respectively. Results: SO was observed in 4% of the women and 11% of the men in the H70 cohort, and in 10% of the ULSAM male cohort. The 75-year-old women with SO had a higher risk (HR 3.25, 95% confidence interval (1.2-8.9)) of dying within ten years compared to those with a “normal” phenotype. A potential similar association with mortality among the 75-year-old men was not statistically significant. In the older men aged 87 years, obesity was associated with increased survival. Conclusions: SO was observed in 4-11% of community-dwelling older adults. In 75-year-old women SO appeared to associate with an increased risk of dying within ten years. In 87-year-old men, the results indicated that obesity without sarcopenia was related to a survival benefit over a four-year period.
High expression of CD52 mRNA predicts poor prognosis for cytogenetic normal acute myeloid Leukemia patients
Authors: Cai Ping , Cai Wenzhi , Xu Xiaoyu , Yang Xiaofei , Wang Yemin , Wu Depei , Chen Suning
Published: March 2020

Background: The prognosis of cytogenetic normal acute myeloid leukemia (CN-AML) varies. Finding new biomarkers affecting the prognosis of these patients may bring a new strategy for precise classification and treatment. CD52 plays a significant role in chronic lymphocytic leukemia (CLL). However, the potential role of CD52 in CN-AML remains largely elusive. Methods: We analyzed the prognostic role of different expression levels of CD52 in 58 CN-AML from The Cancer Genome Atlas (TCGA) dataset and validated these results with 345 CN-AML patients from Gene Expression Omnibus (GEO) dataset. Results: CN-AML patients with high CD52 mRNA expression had a poorer prognosis compared to low CD52 expression ( event-free survival [EFS], P =0.056; overall survival [OS], P=0.043; log-rank test) and the results was verified by GSE12417 (OS, P=0.020; log-rank test) and GSE71014 (OS, P=0.020; log-rank test). Hematopoietic stem cell transplantation (HSCT) may improve prognosis of patients with CD52 high . Regression analysis shows that the expression level of CD52 (HR=1.503; 95%CI:1.158-1.949 ; P=0.002) is a prognostic factor independent of age (HR=3.045; 95%CI:1.524-6.086; P=0.002) and FLT3 mutation status (HR=2.219; 95%CI:1.123-4.382; P=0.022). CD52 gene expression shows a predictive effect on EFS (1-year survival- area under the curve [AUC]:0.685, 2-year survival-AUC:0.752) and OS (1-year survival-AUC: 0.717, 2-year survival-AUC:0.770). Besides, we also found that there is a significant negative correlation between CD52 mRNA expression and DNA methylation . Accordingly, we speculated that CD52 DNA hypomethylation may responsible for the high level of CD52 mRNA. Functional enrichment analysis of differentially expressed genes in CD52 high and CD52 low suggests that adhesion molecule deregulation maybe also the potential pathological mechanism of CD52. Conclusions: CD52 gene mRNA overexpression is an independent adverse prognostic factor for CN-AML. CD52 DNA hypomethylation may responsible for the high level of CD52 mRNA. Adhesion molecule deregulation maybe potential pathological mechanism of CD52. Whether CD52 monoclonal antibodies play a role in high risk patients need further research.
CD73 blockade enhances the local and abscopal effects of radiotherapy in a murine rectal cancer model
Authors: Tsukui Hidenori , Horie Hisanaga , Koinuma Koji , Ohzawa Hideyuki , Sakuma Yasunaru , Hosoya Yoshinori , Yamaguchi Hironori , Yoshimura Kotaro , Lefor Alan Kawarai , Sata Naohiro , KITAYAMA JOJI
Published: March 2020

Background

Anti-tumor effects of radiation therapy (RT) largely depend on host immune function. Adenosine with its strong immunosuppressive properties is an important immune checkpoint molecule.

Method

We examined how intra-tumoral adenosine levels modify anti-tumor effects of RT in a murine model using an anti-CD73 antibody which blocks the rate-limiting enzyme to produce extracellular adenosine. We also evaluated CD73 expression in irradiated human rectal cancer tissue.

Results

LuM-1, a highly metastatic murine colon cancer, expresses CD73 with significantly enhanced expression after RT. After subcutaneous (sc) transfer of LuM-1, mice developed macroscopic sc tumors and microscopic pulmonary metastases within 2 weeks. Adenosine levels in the sc tumor were increased after RT. Selective RT (12Gy in 3fractions) suppressed the growth of the irradiated sc tumor, but did not affect the growth of lung metastases which were shielded from RT. Intraperitoneal administration of anti-CD73 antibody (200 μg x 6) alone did not produce antitumor effects. However, when combined with RT in the same protocol, anti-CD73 antibody further delayed the growth of sc tumors and suppressed the development of lung metastases presumably through abscopal effects. Splenocytes derived from RT+ CD73 antibody treated mice showed enhanced IFN-γ production and cytotoxicity against LuM-1 compared to controls. Immunohistochemical studies of irradiated human rectal cancer showed that high expression of CD73 in remnant tumor cells and/or stroma is significantly associated with worse outcome.

Conclusion

These results suggest that adenosine plays an important role in the anti-tumor effects mediated by RT and that CD73/adenosine axis blockade may enhance the anti-tumor effect of RT, and improve the outcomes of patients with locally advanced rectal cancer.
Social Cognition in 22q11.2 Deletion Syndrome and Idiopathic Developmental Neuropsychiatric Disorders
Authors: Jalal Rhideeta , Nair Aarti , Lin Amy , Eckfeld Ariel , Kushan Leila , Zinberg Jamie , Karlsgodt Katherine H. , Cannon Tyrone D. , Bearden Carrie E.
Published: March 2020

Background

22q11.2 deletion syndrome (22q11DS) is a common recurrent neurogenetic condition associated with elevated risk for developmental neuropsychiatric disorders and intellectual disability. Children and adults with 22q11DS often exhibit marked social impairment as well as neurocognitive deficits, and have elevated rates of both autism spectrum disorder (ASD) and psychosis. However, the relationship between the basic processes of social cognition and cognitive ability has not been well studied in 22q11DS. Here, we examined differences in social cognition in 22q11DS, relative to multiple groups of idiopathic neuropsychiatric disorders, and typically developing healthy controls (HC). Additionally, we examined differences in intellectual functioning and its relationship to social cognitive abilities. Finally, we examined the relationship between social cognitive abilities and real-world social behavior.

Methods

We examined social cognition and intellectual functioning in 306 participants (mean age = 16.63+/-4.59; % female = 44.8%): sixty-eight with 22q11DS, 49 youth with first episode psychosis (FEP), 48 at clinical high-risk (CHR) for psychosis, 24 participants with ASD, and 117 HC. Social cognition was assessed using The Awareness of Social Inference Test (TASIT), while reciprocal social behavior was assessed via parent/caregiver ratings on the Social Responsiveness Scale (SRS). Participants were also administered the Wechsler Abbreviated Scale of Intelligence, 2 nd edition (WASI-II) to assess intellectual functioning.

Results

The 22q11DS group exhibited significantly lower social cognitive abilities compared to all other groups, even after controlling for intellectual functioning. Significant positive correlations were found between social cognition, as measured by the TASIT, and IQ across groups. In contrast, no significant relationships were found between TASIT and real-world social behavior (SRS) for any group.

Conclusions

Our findings indicate social cognitive deficits are more prominent in 22q11DS than idiopathic neuropsychiatric conditions across the age range, even after adjusting for global intellectual function. These results contribute to our understanding of the intellectual and social vulnerabilities of 22q11DS in comparison to idiopathic neuropsychiatric disorders. Our findings of robust associations between intellectual ability and social cognition emphasizes the importance of accounting for neurocognitive deficits in social skills interventions and tailoring these existing treatment models for 22q11DS and other populations with intellectual impairment.
Impact of retrieved lymph nodes count on short-term complications in patients with gastric cancer: a retrospective study
Authors: Sun Feng , Liu Song , Song Peng , Zhang Chen , Liu Zhijian , Guan Wenxian , Wang Meng
Published: March 2020

Background: It is well established that retrieved lymph nodes (RLNs) count were positively correlated with better overall survival in gastric cancer (GC). But little is known about the relationship between RLNs count and short-term complications after radical surgery. Methods: A total of 1487 consecutive GC patients between January 2016 and December 2018 at Nanjing Drum Tower Hospital were retrospectively analyzed. Univariate analyses were performed to elucidate the association between RLNs count and postoperative complications. We further identified clinical factors that might affect the RLNs count.Results: Among all of the patients, postoperative complications occurred in 435 (29.3%) patients. The mean RLNs count was 25.1 and 864 (58.1%) patients were diagnosed with lymph node metastasis. Univariate analyses showed no significant difference between RLNs count and postoperative complications (both overall and stratified by CDC grade). We further explored that preoperative serum albumin, type of resection, operation time, tumor invasion, lymph node metastasis, and pTNM stage were associated with RLNs count. Conclusions: The current study demonstrated that RLNs count was not associated with postoperative short-term complications following gastrectomy of GC, which provided a rationale for the determination of a proper RLNs count of curative gastrectomy.