Results 31 to 40 of about 350,636 (211)

Influence of EDTA Coverage Density on Optical Fiber Sensor for Heavy Metal Ion Detection

open access: yesNano Select, EarlyView.
This study investigates the influence of chelating agent coverage on the performance of optical fiber sensors for heavy metal ion detection. Ethylenediaminetetraacetic acid (EDTA) was employed to functionalize single‐mode 28 optical fibers (SMF‐28), and the influence of surface coverage uniformity on zinc ion sensing performance was investigated ...
Zhejun Xu   +5 more
wiley   +1 more source

Algumas reflexões sobre Descartes e Maquiavel

open access: yesTrans/Form/Ação, 1994
Neste artigo, duas cartas de Descartes sobre Maquiavel são analisadas. Primeiro, é apresentado, com base no que o próprio filósofo sugere nas cartas, um contraste entre os dois pensadores, do qual emerge uma distinção entre moral e política em Descartes.
Cícero Araujo
doaj   +1 more source

Structural stability of plant–pollinator interactions despite seasonal abundance of long‐tongued hawkmoths

open access: yesOikos, EarlyView.
Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz   +3 more
wiley   +1 more source

Fortuna vs estatus: la movilidad social en el México decimonónico

open access: yesHistoria Mexicana El Colegio de México, 2016
Al examinar la trayectoria de distintos profesionistas como militares, políticos y literatos, se busca identificar las circunstancias y los medios debidos a los cuales algunos hombres y mujeres del México decimonónico vieron modificada su condición ...
Anne Staples
doaj   +1 more source

Rynek wideo w Polsce [PDF]

open access: yes, 2013
The development of VHS market in Poland can be roughly divided into two main periods: first (1980-1988) is the one when that area of pop culture first came into existence and shaped, second (1988-1992) is the "video boom" era.
Fortuna, Grzegorz
core   +2 more sources

Floral resource diversity drives spatiotemporal variation in plant–pollinator network structure

open access: yesOikos, EarlyView.
Mechanisms underlying community assembly, including those related to species interactions, vary across space and time. Plant–pollinator networks exemplify these dynamics, where link rewiring and turnover mediate adaptations to environmental changes. Bees rely on diverse floral resources (e.g.
Caio S. Ballarin   +3 more
wiley   +1 more source

Using multilayer socioecological networks to assess ecosystem service flow in a subsistence farming community in Papua New Guinea

open access: yesPeople and Nature, EarlyView.
Abstract Ecosystem services are rapidly degrading under anthropogenic pressure. Therefore, it is increasingly important to understand how ecosystem services flow, particularly at local scales, where people directly rely on nature for their livelihoods and well‐being. Many ecosystem services are underpinned by ecological (e.g.
Anna Stanworth   +8 more
wiley   +1 more source

Razón y Fortuna (José M.ª González, La diosa Fortuna. Metamorfosis de una metáfora política)

open access: yesIsegoría, 2007
En diálogo con el último libro de José M. González, La diosa Fortuna. Metamorfosis de una metáfora política, galardonado con el último Premio Nacional de Ensayo 2007, en este trabajo se analizan las relaciones mantenidas por la Razón con quien ...
Yolanda Ruano de la Fuente
doaj   +1 more source

Penetapan Harga Pokok Produksi Dengan Metode Activity Based Costing Pada PT. Fortuna Inti Alam Dimanado Sulawesi Utara [PDF]

open access: yes, 2014
PT. Fortuna Inti Alam adalah Perusahaan manufaktur yang bergerak dibidang industri kopi yang memiliki 3 jenis produk kopi yaitu Fortuna-1, Formula-1, dan Fortorang.
Lepar, S. M. (Septyani)   +2 more
core  

In praise of other views: the world of cities and the social sciences [PDF]

open access: yes, 2012
Los profundos cambios en el ámbito urbano constituyen un desafío a las lecturas convencionales de las ciudades. Este trabajo aboga por una reformulación epistémica del conocimiento actual de la ciudad por la vía de (1) releer la ciudad de hoy a través de
Fortuna, Carlos
core   +1 more source

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