Miracle-dz/UniFAR-FTUs huggingface dataset:
Low temperature deposition of carbon nanotubes

We introduce a novel method for low substrate temperature carbon nanotube (CNT) deposition utilizing photo-chemical vapor deposition (PCVD). Aluminum and nickel catalyst layers are deposited on thermally oxidized silicon substrates for CNT growth. The catalyst layers of varying thicknesses are deposited by electron beam evaporation. Different catalyst annealing temperatures and pressures are investigated. The CNT deposition is carried out immediately following the annealing process. The presence of light source during CNT deposition assists in fragmentation of the CCl4 precursor molecules used, thereby permitting a lower substrate temperature during growth. We have successfully deposited CNTs at substrate temperatures as low as 400 °C by this technique.
A data-driven approach to the automated mapping of functional brain topographies across species

Behavioral neuroscience has made great strides in developing animal models of human behavior and psychiatric disorders. Animal models allow for the formulation of hypotheses regarding the mechanisms underlying psychiatric disorders, and the opportunity to test these hypotheses using procedures that are too invasive for human participants. However, recent scientific reviews have highlighted the low success rate of translating results from animal models into clinical interventions in humans. A potential roadblock is that bidirectional functional mappings between the human and rodent brain are incomplete. To narrow this gap, we created a framework, Neurobabel, for performing large-scale automated synthesis of human neuroimaging data and behavioral neuroscience data. By leveraging the semantics of how researchers within each field describe their studies, this framework enables region to region mapping of brain regions across species, as well as cross-species mapping of psychological functions. As a proof of concept, we utilize the framework to create a functional cross-species mapping between the amygdala and hippocampus for fear-related and spatial memories, respectively. We then proceed to address two open questions in the field: (1) Do rodents have a dorsolateral prefrontal cortex? (2) Which human brain region corresponds to the rodent prelimbic cortex? Current understanding of the neurobiological processes underlying brain disorders is strongly informed by research in non-human animals, where 1 . CC-BY-NC-ND 4.0 International license under a not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available The copyright holder for this preprint (which was this version posted November 4, 2019. ; https://doi.org/10.1101/412114 doi: bioRxiv preprint
Navigating Context, Pathways and Relationships in Museum Collections using Formal Concept Analysis

The digital medium allows visitors, curators and art historians to gain new insights into their collections through data analysis and rich, interactive visualizations. Motivated by the rise of large-scale cultural heritage collections that have emerged on the Web, we argue that Formal Concept Analysis can be used to highlight the relationships between objects and their features within digital art collections and provide a means for visitors to explore these collections via interactive, narrated pathways. Our work presents four research projects that span 10 years from 2005 - 2015 – ImageSleuth, The Virtual Museum of the Pacific, A Place for Art and a scalability study of Formal Concept Analysis as applied to a data-set from the Brooklyn Museum. Our approach is based on the idea that much of the meaning that can be interpreted from museum collections lies – at least in part – in the way that objects are related to one another. Our work examines how Formal Concept Analysis can drive explorative, narrative-based visitor experiences and reveal new insights into cultural heritage collections.
Alpha oscillations for processing saliency are generated by common cortical networks in visual attention tasks spanning wide spatial and spatio-temporal scales

Reorientation of attention towards unexpected salient changes around us is critical for survival. Current understanding from fMRI studies point towards a network comprising of pre-frontal cortical areas (PFC), temporo-parietal junction (TPJ) and insula being responsible for processing and reorienting attention in a myriad of tasks. However, little is known about the temporal structure of the dynamical changes that govern neural systems while reorienting attentional focus to visual stimuli operating at very fast and very slow time scales. Using a custom-designed behavioral experiment and simultaneous EEG recordings, we investigated the effect of saliency across different task conditions to see if the underlying neural signatures involved in such rapid attentional shifts change with the task conditions. Interestingly, the EEG signal power at alpha band showed near identical rise in amplitude during salient conditions for a visual search and a dynamic motion tracking task. Source reconstruction underlying the enhanced alpha activity across task conditions revealed the involvement of lateral PFC, right insula and right TPJ which are regions of the Ventral Attention Network responsible for the deployment of bottom-up attention in response to salient stimuli. The results suggested a more general role of alpha oscillations which is dependent on the task context (saliency) but not on the task complexity or goals. Employing source-level effective connectivity analysis, we observed that the posterior right TPJ receives causal influences from the anterior right TPJ. Thus, we characterized the specific roles of both these regions in salient distractor processing for the first time through an EEG study. SIGNIFICANCE STATEMENT Regardless of a vast body of extant literature that has linked alpha oscillations to distractor suppression, the neural implementation of this mechanism of inhibition at the level of attentional networks lacks clarity. The importance of context specificity while processing saliency and the extent to which it reflects in the alpha modulation has garnered recent interest. Through an EEG study, we see the effect of salient distractors on two visual attention tasks: 1) involving spatial complexity and 2) involving spatio-temporal complexity. The results bring forth an interesting revelation where the neural patterns of alpha enhancement vis-à-vis saliency and the underlying neural networks are completely agnostic to the task conditions, thus elucidating the specific role of alpha oscillations in perceptual processing.
DDoS Attack in Software Defined Networks: A Survey DDoS Attack in Software Defined Networks: A Survey

Distributed Denial of Service (DDoS) attacks have been one of the most destructive threats to Internet security. By decoupling the network control and data plane, software defined networking (SDN) offers a flexible network management paradigm to solve DDoS attack in traditional networks. However, the centralized nature of SDN is also a potential vulnerability for DDoS attack. In this pa⁃ per, we first provide some SDN⁃supported mechanisms against DDoS attack in traditional networks. A systematic review of various SDN⁃self DDoS threats are then presented as well as the existing literatures on quickly DDoS detection and defense in SDN. Fi⁃ nally, some promising research directions in this field are introduced.
Solvent-free conversion of glycerol to solketal catalysed by activated carbons functionalised with acid groups

Activated carbons prepared from agricultural waste were modified to introduce surface acid sites by treatment with HNO3 or H2SO4. These acid-functionalised materials were studied as heterogeneous catalysts for the solvent-free acetalisation of acetone with glycerol to produce 2,2-dimethyl-1,3-dioxolane-4-methanol (solketal). The best catalyst was prepared by treatment with concentrated sulphuric acid and achieved 97% conversion of glycerol with high selectivity towards solketal by reaction with acetone at room temperature. The catalytic behaviour of the activated carbons was correlated with their physicochemical properties through characterization by N2-physisorption, XPS, elemental analysis, TGA and Boehm titration of the acid sites.
Esquema de Seguridad de Datos Entre los Nodos y el Gateway en una Red LoRaWan

Este documento muestra las vulnerabilidades presentes en una red de sensores inalambricos implementada en una red de area amplia de largo alcance LoRaWAN e identifica posibles ataques. Los ataques a la red se realizaron mediante la implementacion de un analizador de protocolos (Sniffer) para capturar paquetes. El Sniffer se implemento utilizando el hardware RTL2832U y se visualizo en Wireshark a traves de GNU-Radio y un arduinio y modulo RF lora-01. Las pruebas mostraron que la disponibilidad y la confidencialidad de los datos podrian verse amenazadas por los ataques de interferencia y la no encriptacion de los datos MAC.
Assessing pre-injury health status of older adults who have sustained a traumatic brain injury compared to matched controls

Traumatic brain injuries (TBI) are a major public health burden with approximately 2 million individuals receiving hospital treatment annually. Large heterogeneity exists among individuals who sustain a TBI concerning the clinical representation and post-TBI disease progression. Additionally, older adults tend to have worse post-injury outcomes compared to younger cohorts and research surrounding this difference in clinical prognoses is limited. It remains unknown whether the decline seen post-TBI in older adults can be attributed to a continuation of a pre-existing disease process or whether the TBI was the causal trigger for the cognitive and physical decline. We performed conditional logistic regression analyses that examined pre-index injury physical and behavioral risk factors in inpatient TBI cases from the TBI Health Study compared to matched, non-TBI controls from MIDUS Study populations. We found the odds of having prior year, pre-index injury depression was 3.98 times higher in TBI cases compared to matched controls (OR=3.98, 95% CI=1.71-9.27, p-value=0.001). Subgroup analyses found the odds of having prior year exposure of depression was significant in male TBI cases versus male controls (OR=6.92, 95% CI=2.19-21.90, p-value= =65 years TBI cases versus >=65 years controls (OR=6.54, 95% CI=1.72-24.84, p-value=0.006). While most prior year risk factors reported insignificant differences between TBI cases and controls, the null findings suggest that post-TBI disease progression may not be a continuation of prior health conditions. In fact, traumatic brain injuries may be the causal agent for the cognitive and physical health decline experienced after injury. The public health significance is that these results will lead to better categorization of post-TBI disease progression, thus helping improve TBI prevention methods and traumatic brain injury clinical care.
Determining Bitumen Viscosity Through Drop Shape Recovery

In determining the viscosity of bitumen using conventional methods, the measurements must be conducted at extremely slow shear rates to avoid dissipative heating. In this study, bitumen viscosity is measured at room temperature using a drop shape recovery technique which, as will be shown, is immune to any problem of dissipative heating. The method involves stretching a small droplet of bitumen (and in general, of any viscous liquid) with micropipettes and allowing it to recover to its original spherical shape; the dimensions of the droplet can be as small as several micrometres. The shape recovery process is driven by capillary forces and rate-limited by the droplet viscosity. As such, knowing the interfacial tension, the droplet viscosity can be determined accurately from the relaxation dynamics. With conventional viscometers, the problem of dissipative heating often increases linearly with the viscosity and quadratically with the shear rate. This is in contrast with shape recovery experiments, where dissipative heating is independent of shear rate and varies inversely with the viscosity.
Efecto de la consanguinidad en los parámetros reproductivos de vacas Holstein friesian, en la provincia de Cotopaxi. Ecuador.

El presente estudio tuvo como objetivos determinar el nivel medio de consanguinidad en vacas Holstein friesian, en la provincia de Cotopaxi y evaluar el efecto de la consanguinidad en parametros reproductivos como son: edad al primer parto, numero de servicios por concepcion y dias abiertos. La consanguinidad es resultado del cruzamiento entre individuos emparentados por ascendencia. Disminuye la heterocigosidad y aumenta la frecuencia de genes recesivos, casi siempre, indeseables provocando en los caracteres fenotipicos reduccion en el rendimiento y, la variabilidad. En la provincia de Cotopaxi no existen trabajos relacionados a consanguinidad. La poblacion de estudio estuvo conformada por 373 animales de raza Holstein friesian. Se analizaron las distribuciones de los rasgos, por PROC INSIGHT del SAS vw.9.4. Se constato la no normalidad de las mismas, por las pruebas de bondad de ajuste, para la distribucion normal (Shapiro-Wilk). Se conocio el tipo de distribucion mas ajustada a la variable, por el PROC SEVERETY. Se calcularon los estadigrafos descriptivos media, moda, mediana, coeficiente de variacion, desviacion estandar, error estandar y asimetria de las variables utilizando el PROC MEANS del SAS vw.9.4. En el calculo de los valores individuales de consanguinidad se utilizaron los softwares Pedigree Viewer y Proc INBREED del SAS v.w. 9.4 en donde se utilizaron la estimacion de maxima verosimilitud restringida – REML de componentes de varianza y covarianza. El valor medio de la consanguinidad fue igual a 0,1344 para los animales estudiados. Se verifico que el indice de consanguinidad no influye sobre: la edad al primer parto (P= 0,1809), numero de servicios por concepcion (P= 0.5915) y dias abiertos (P= 07113). Sin embargo, se recomienda mantener el indice de consanguinidad por debajo de los valores establecidos en la presente investigacion.
Thermodynamic stability and crystal structure of lanthanide complexes with di-2-pyridyl ketone

The di-2-pyridylketone ligand (dpk) exhibits several coordination modes and is a good candidate for preparation of a variety of metal complexes. In this work we present a potentiometric study (in water and in ethanol : water mixtures) of Ln-dpk and Cu(II)-dpk complexes. The thermodynamic stability of the species with La, Sm and Yb is compared to that of Cu(II). In addition, [Ln(NCS)3{(py)2C(OEt)(OH)}3] (Ln = Pr, Sm, Gd) and [Cu(SCN)2{(py)2C(OEt)(OH)}]2 · 2EtOH have been prepared and characterized by X-ray diffraction. ∥Dedicated to Professor Alfredo Mederos on the occasion of his retirement as Professor of Inorganic Chemistry of Universidad de La Laguna, Tenerife, Spain.
Resistência mecânica e térmica de compósitos reticulados de PVA/óxido de grafeno

Filmes compositos de PVA com acido citrico e oxido de grafeno foram sintetizados via drop casting, e reticulados por meio de tratamento termico a 140 °C por duas horas. A influencia das cargas nas propriedades mecânicas, termicas e opticas foram caracterizadas por meio de ensaios de tracao, termogravimetria. e espectroscopia UV/VIS. O uso combinado do acido citrico e do oxido de grafeno se mostrou bastante eficaz ao promover um aumento na resistencia mecânica de 11,3±1,4 MPa (PVA puro) para 37,1±2,1 MPa (amostra com tratamento termico e 5% de acido citrico e 0,5% de oxido de grafeno). Ocorreu, porem, uma reducao na deformacao maxima de 333,0±80,8% (PVA puro) para 84±14% (amostra com tratamento termico e 5% de acido citrico e 0,5% de oxido de grafeno). Os maiores valores obtidos representam um aumento de 228% na resistencia mecânica e uma reducao de 56% na deformacao maxima. A estabilidade termica dos filmes foi analisada por termogravimetria; constatou-se que a adicao das cargas, juntamente com o tratamento termico, provoca um aumento na temperatura de degradacao, que passou de 269 °C (PVA puro) para 325 °C para a amostra com 5% de acido citrico e 0,5% de oxido de grafeno. As propriedades opticas foram investigadas por meio de espectroscopia UV/VIS onde foi observado o amarelamento decorrente do tratamento termico representado por uma reducao na transmitância dos 300-450 nm.
Formation of β-Hydroxycarbonyls from the OH Radical-Initiated Reactions of Selected Alkenes

β-Hydroxycarbonyls can be formed from the gas-phase reactions of alkenes with the OH radical, both in the presence and in the absence of NO. To date, because of analytical difficulties, few data have been reported for the formation of this class of compound from the reactions of the OH radical with alkenes. We have determined that β-hydroxyketones can be readily analyzed by gas chromatography, and in this work we have shown that in 1 atm of air the β-hydroxyalkoxy radicals formed in the reactions of the OH radical with trans-2-butene, trans-3-hexene, 1-butene, and α-pinene in the presence of NO primarily decompose rather than react with O2. Rate constant ratios kd/kO2 (or lower limits thereof), where kd and kO2 are respectively the rate constants for the decomposition and the reaction with O2 of the intermediate β-hydroxyalkoxy radicals, have been obtained for the reactions of the CH3CH(Ȯ)CH(OH)CH3, CH3CH2CH(Ȯ)CH2OH, and CH3CH2CH(Ȯ)CH(OH)CH2CH3 radicals at 296 ± 2 K and atmospheric pressure. Using the O3 .
Evaluación fisicoquímica del guandul (Cajanus cajan (L) Millsp.) cultivado en Sibarco, Baranoa, Colombia

Resumen: El objetivo de la investigación fue comparar tres denominaciones culturales de guandul (Cajanus cajan (L) Millsp. ), denominadas cuarentano, siete granos y mojarrita, cultivado Sibarco, Baranoa, departamento del Atlántico, Colombia. Se evaluaron las características gastronómicas a temperaturas y tiempos de cocción entre 95 oC y 105 oC, y 0 – 15 minutos, 15 – 30 minutos y 30 37 minutos, respectivamente. Las tres denominaciones culturales del guandul no presentaron diferencias. En el análisis fisicoquímico se evaluaron lo parámetros humedad, ceniza, contenido graso, fibra cruda y proteína. Se realizó un análisis de varianza de una vía “ANOVA” al 95% de confianza entre pares de medias de las tres denominaciones en cada uno de los parámetros. El análisis estadístico mostró que el único parámetro que no presentó diferencia significativa fue la fibra cruda. Los parámetros contenido graso, humedad, proteína, cenizas presentaron diferencias estadísticamente significativas. Se aplicó la prueba de rango múltiple, para observar el comportamiento de los pares de medias que difieren entre sí, y analizar el conjunto de medias en total de las denominaciones frente a cada parámetro. Los hallazgos permitieron identificar, que existen medias que difieren en estos parámetros, y que el análisis de las medias en conjunto no arrojó diferencia significativa al 95% de confianza.
Desain Alat Penggoreng Kacang dengan Drum

Desainer produk membuat konsep dan mengevaluasi ide-ide, membuat ide menjadi nyata melalui produk dalam pendekatan yang lebih sistematis. Desain produk yaitu generasi ide, pengembangan konsep, pengujian dan pelaksanaan manufaktur(objek fisik) atau jasa. Tujuan dari penelitian ini adalah untuk membuat desain yang lebih inovatif dari produk yang sudah ada sebelumnya mengenai alat pengusir hama burung untuk kalangan petani agar memudahkan dalam penggorengan kacang. Atribut alat didapatkan dari hasil brainstorming yang dilakukan oleh para perancang alat. Data ukuran desain diperoleh dari pengamatan secara langsung dan survey pasar pada produk alat penggoreng kacang dengan drum yang sudah ada di pasaran. Alat penggoreng kacang dengan drum ini diciptakan untuk mengurangi keluhan-keluhan yang dirasakan petani dalam menggunakan alat penggoreng kacang tradisional. Data yang didapat untuk spesifikasi alat merupakan data dari hasil jawaban pada kuisioner yang disebarkan langsung pada petani di kecamatan Aek Natas, Labuhanbatu Utara, Aek Kanopan. Brainstorming merupakan sebuah metode yang digunakan untuk membangkitkan sejumlah besar ide-ide yang kebanyakan ide-ide tersbeut akan dibuang. Dengan metode QFD, dibandingkan alat Penggoreng kacang dengan drum dengan 3 pesaing lainnya dengan atribut yang sama.Sub solusi dihasilkan dari penyelesaian setiap masalah yang muncul, termasuk dalam memilih atribut untuk alat penggoreng kacang dengan drum dengan menggunakan langkah-langkah Nigel Cross untuk mempertahankan keunggulan dan meningkatkan kualitas produk. Mengevaluasi alternatif dengan menggunakan Pairwise Comparison dan skala AHP untuk menghitung pembobotan dari setiap atribut dan menentukan ranking dari setiap alternatif. Rekayasa nilai adalah langkah terakhir dalam proses perancangan dengan tujuan untuk meningkatkan nilai produk untuk konsumen dan menurunkan biaya yang harus dikeluarkan oleh produsen atau penghasil produk tersebut.
Limitaciones en el manejo de Mieloma Múltiple en Ecuador

El mieloma múltiple (MM) es una neoplasia hematológica clasificada por la Organización Mundial de la Salud (OMS) dentro de las enfermedades linfoproliferativas de células B y se caracteriza por la proliferación de células plasmáticas monoclonales, junto a la producción excesiva de inmunoglobulinas no funcionales o cadenas ligeras de inmunoglobulina [1].
Promoting Effect of CeO2 in Combustion Synthesized Pt/CeO2 Catalyst for CO Oxidation

A 1% Pt/CeO2 catalyst prepared by the solution combustion method shows a higher catalytic activity for CO oxidation by O2 compared to Pt metal particles. At least six hydrogen atoms are taken up per Pt at −25 °C. The structure of 1% Pt/CeO2 catalyst has been investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy. Rietveld refinement shows that Pt ions are incorporated into the CeO2 matrix in the form of Ce1-xPtxO2-δ solid solution. A decrease in oxygen content in 1% Pt/CeO2 is seen in relation to pure CeO2. TEM studies show that Pt is dispersed as atoms or ions and only a small amount as Pt metal particles. The Pt(4f) core level region in XPS shows that Pt is present mostly in the Pt2+ ionic state on CeO2 surface. FTIR of 1% Pt/CeO2 shows a strongly adsorbed CO peak at 2082 cm-1 corresponding to oxidized Pt. These structural studies show that Pt ions in the catalyst are substituted for Ce4+.
A small-angle X-ray scattering study of high-density polyethylene and ultrahigh molecular weight polyethylene

Small-angle X-ray scattering was used to compare the morphology of extruded ultrahigh molecular weight polyethylene (UHMWPE) and melt-crystallized high-density polyethylene (HDPE). The crystalline morphology of UHMWPE has a low degree of order, rendering direct methods of analysis of the scattering curves unsuitable. We have demonstrated that the indirect transformation method, requiring no extrapolation of the scattering curve, can be used to obtain the one-dimensional correlation functions for these dense lamellar systems. The lamellar morphology of UHMWPE contained a large distribution of lamellar thicknesses, diffuse interfaces, and a large variation of interlamellar spacing as compared to those features in HDPE. The interlamellar spacing of extruded UHMWPE determined from the one-dimensional correlation function was 50 nm and that of melt-crystallized HDPE was 26 nm. The amorphous zone thickness of HDPE was 8 nm.