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Revista Macrohistoria
Los comerciantes extranjeros en el Callao y sus conexiones con los puertos del Pacífico norte 1819-18292023 •
A partir de la coyuntura del comercio neutral el intercambio entre España y América se vio entorpecido. La situación se precipitó a partir de 1814 hasta 1821, especialmente en el Pacífico Sur, debido a los acontecimientos bélicos. Fue a partir de 1818 con la Independencia de Chile que muchos comerciantes extranjeros aprovecharon para ingresar al circuito del comercio español americano instalándose principalmente en el puerto del Callao. Analizaremos los circuitos mercantiles en el área del Pacífico norte a partir del puerto del Callao hacia California, pasando por puertos centroamericanos (Sonsonate, Realejo), San Blas en México en el período de transición entre el imperio y los nuevos estados (1819-1829), para comparar lo ya investigado para el área sur (Callao- Valparaíso- Buenos Aires) durante el mismo tiempo. Partimos de datos referentes a embarcaciones, hombres y mercancías que se desplazaron por el Pacífico. ¿Cómo impactaron las coyunturas bélicas en el Pacífico norte? ¿Fueron los mismos comerciantes extranjeros y norteamericanos los que participaron en los circuitos norte al igual que en los del sur? ¿Cuáles fueron los productos de intercambio? Esta investigación nos permitiría visualizar los intercambios mercantiles a partir del puerto del Callao en el período de transición entre la etapa virreinal y republicana.
environmentalbiotechnology.pl
Quantification of triazine herbicides using chloroplasts in conjunction with thin-layer chromatographyWe present a video-densitometric quantification method for the triazine herbicides atraton, terbumeton, simazine, atrazine and terbutylazine. Triazine herbicides were separated on silica gel using methyl-t-butyl ether, cyclohexane (1+ 1, v/v) as mobile ...
Buffalo Bulletin
Multilocus sequence typing of P. multocida isolates of buffalo origin from Gujarat state of India2017 •
Haemorrhagic septicaemia in Indian buffaloes is mainly caused by Pasteurella multocida serotype B: 2. The present study was conducted to characterize the P. multocida serotype B: 2 isolates of buffalo origin by multilocus sequence typing (MLST) to identify the sequence types prevailing around Gujarat state in India. A total of seven field isolates collected from different regions across the state and a reference strain (P52) were used for this study. Seven housekeeping genes were specifically amplified by PCR; the gene sequences obtained were trimmed to specific length and allelic profiles were assigned to these seven loci. The assigned allelic profiles were 23, 37, 21, 17, 4, 2 and 17 for adk, est, pmi, zwf, mdh, gdh and pgi genes, respectively and all the isolates were grouped in one sequence type, sequence type 122 (ST122). eBURST analysis classified ST122 into group number 23 when group definition was 5 or more matches. But when group definition was 6 or more matches it was clas...
2020 •
A novel Artificial-Neural-Network architecture has been developed, for the first time, which predicts eight coexisting-phases present in high-entropy-alloys. The model considers composition and processing-route to compute physical and thermodynamic-parameters of the alloy. The Artificial-Neural-Network uses these parameters and predicts the phases in a given alloy. Validation reveals prediction accuracy of 87.083%. This modeling technique can find potential application in designing new high-entropy-alloys and choosing their processing-routes.
2001 •
En aquest treball s'estudia l'escolament i l'erosió a uns vessants del massís de les Gavarres, seleccionats tenint en compte del substrat litològic i dels usos del sòl. Els resultats obtinguts posen de manifest que l'escolament i l'erosió són poc importants, però que tot i els valors baixos es poden detectar diferències segons el substrat i els usos del sòl. Els
PETIR
Model Analisis Kasus Covid-19 Di Indonesia Menggunakan Algoritma Regresi Linier Dan Random Forest2021 •
Kenaikan kasus covid-19 di Indonesia tidak bisa diperkirakan perkembangannya, sehingga menyebabkan buruknya berbagai aspek kehidupan di Indonesia. Analisis data sangat penting untuk dilakukan, dengan menganalisis maka akan dihasilkan informasi baru yang bisa digunakan untuk menunjang penelitian lebih dalam terhadap permasalahan yang sama. Penelitian ini bertujuan untuk menganalisis data covid-19 di Indonesia dengan cara mengetahui nilai akurasi yang diperoleh dalam data. Dalam penelitian ini metode yang digunakan yaitu metode regresi linier dan random forest. Hasil penelitian dapat diketahui bahwa dalam penelitian ini cara analisis yang dilakukan yaitu menggunakan perhitungan manual dengan tools microsoft excel, pemrograman bahasa python menggunakan tools google colaboratory dan perangkat lunak pengolahan data menggunakan tools rapidminer. Nilai akurasi dalam setiap metode dapat berbeda sesuai dengan tools yang digunakan. Pada metode regresi linier nilai akurasi tertinggi adalah 99...
2019 •
This paper concerns several important topics of the Symmetry journal, namely, pattern recognition, computer-aided design, diversity and similarity. We also take advantage of the symmetric structure of a membership function. Searching for the (sub) optimal subset of features is an NP-hard problem. In this paper, a binary swallow swarm optimization (BSSO) algorithm for feature selection is proposed. To solve the classification problem, we use a fuzzy rule-based classifier. To evaluate the feature selection performance of our method, BSSO is compared to induction without feature selection and some similar algorithms on well-known benchmark datasets. Experimental results show the promising behavior of the proposed method in the optimal selection of features.
Algunos elementos fundamentales a considerar en la implementación de las TIC dentro de las instituciones educativas es el acceso a la información, favoreciendo con ello la búsqueda y selección crítica de datos.
American Journal of Physical Medicine & Rehabilitation
Zolpidem and Restoration of Consciousness2014 •
Espacio Tiempo y Forma. Serie I, Prehistoria y Arqueología
Las Puntas Solutrenses: De La Tipología a Los Estudios Funcionales2013 •
Plant and Soil
Fields with no recent legume cultivation have sufficient nitrogen-fixing rhizobia for crops of faba bean (Vicia faba L.)2022 •
Cuadernos Latinoamericanos de Administración
El consumo socialmente responsable en el mercado colombiano2018 •
World journal of emergency surgery : WJES
The role of open abdomen in non-trauma patient: WSES Consensus Paper2017 •
Lecture Notes in Computer Science
Foundations of Information and Knowledge Systems2012 •
European Journal of Organic Chemistry
Butterfly Mesogens Based on Carbazole, Fluorene or Fluorenone: Mesomorphous, Gelling, Photophysical, and Photoconductive Properties2021 •
Environment International
Acidification of the HUMEX Lake; Effects on epilimnetic pools and fluxes of carbon1992 •