Results 21 to 30 of about 291,171 (245)

Criptografía y seguridad en M-COMMERCE

open access: yesRevista Científica Ciencia y Tecnología, 2017
El presente trabajo analiza los parámetros de seguridad más utilizados en el comercio electrónico realizado a través de dispositivos móviles (m-commerce), dentro de este se hace referencia a los tipos de cifrados que se usan con el fin de precautelar la ...
Cristhian Romero Romero   +2 more
doaj   +1 more source

Smart Control and Energy Efficiency in Irrigation Systems Using LoRaWAN

open access: yesSensors, 2021
Irrigation installations in cities or agricultural operations use large amounts of water and electrical energy in their activity. Therefore, optimising these resources is essential nowadays.
Francisco Sánchez-Sutil   +1 more
doaj   +1 more source

Genital Chlamydia trachomatis Seroprevalence and Uterine Fibroid Development: Cohort Study of Young African-American Women

open access: yesMicroorganisms, 2021
Few studies have investigated the 1930s hypothesis that reproductive tract infections are risk factors for fibroid development. In our 2017 cross-sectional analysis from the Study of Environment, Lifestyle, and Fibroids (2010–2018), a large Detroit ...
Kristen Moore, Donna Baird
doaj   +1 more source

Analysis of Alphalactalbumin and Betalactoglobulin from the Rehydration of Bovine Colostrum Powder Using Cloud Point Extraction and Mass Spectrometry

open access: yesJournal of Analytical Methods in Chemistry, 2012
Alphalactalbumin (α-La) and betalactoglobulin (β-Lg) in the rehydration of bovine colostrum powder were successfully separated by cloud point extraction using a nonionic surfactant Triton X-114.
Fan Zhang   +3 more
doaj   +1 more source

Correlation between Irradiation Treatment and Metabolite Changes in Bactrocera dorsalis (Diptera: Tephritidae) Larvae Using Solid-Phase Microextraction (SPME) Coupled with Gas Chromatography-Mass Spectrometry (GC-MS)

open access: yesMolecules, 2022
The metabolites produced by the larvae of Bactrocera dorsalis (Diptera: Tephritidae) exposed to different doses of irradiation were analyzed using solid phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS), and a metabonomic ...
Changyao Shan   +5 more
doaj   +1 more source

A3-A3 Bypass Surgery for Aneurysm: Technical Nuances

open access: yesOperative Neurosurgery, 2018
Abstract BACKGROUND Cerebral bypass remains important for the treatment of complex cerebral aneurysms including dissecting, giant, and fusiform aneurysms not amenable to endovascular treatment or simple clip ligation.
Florina-Nicoleta, Grigore   +1 more
openaire   +2 more sources

Diagnosis and Management of Ureterovaginal Fistula in a Resource-Constrained Setting: Experience at a District Hospital in Northern Nigeria [PDF]

open access: yesLibyan Journal of Medicine, 2009
During 2007 we were invited at different times to review and manage four women with ureterovaginalfistula following caesarean section performed in different rural hospitals.
Randawa AJ1, Khalid L2, Abbas A3   +2 more
doaj  

Relieving dormancy and improving germination of Piquín chili pepper (Capsicum annuum var. glabriusculum) by priming techniques

open access: yesCogent Food & Agriculture, 2018
The effects of different priming techniques were evaluated to improve the dormancy and germination of wild seeds of “Piquín” chili pepper (Capsicum annuum var. glabriusculum).
Maria Fernanda Quintero C   +6 more
doaj   +1 more source

Optimal Design of PV Systems in Electrical Distribution Networks by Minimizing the Annual Equivalent Operative Costs through the Discrete-Continuous Vortex Search Algorithm

open access: yesSensors, 2022
This paper discusses the minimization of the total annual operative cost for a planning period of 20 years composed by the annualized costs of the energy purchasing at the substation bus summed with the annualized investment costs in photovoltaic (PV ...
Brandon Cortés-Caicedo   +4 more
doaj   +1 more source

Molecular dynamics simulation of the interaction between polybutylene terephthalate and A3 during thermal-oxidative aging

open access: yese-Polymers
Polybutylene terephthalate (PBT) elastomers generated via the copolymerization of 3,3-bis(azidomethyl) oxetane and tetrahydrofuran have been widely used as a matrix for solid engines in rockets, missiles, and spacecraft because of their positive standard
Kong Lingze   +9 more
doaj   +1 more source

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