Results 1 to 10 of about 307,545 (230)

LoRa network performance analysis for IoT systems [PDF]

open access: yesITM Web of Conferences, 2023
Low power wide area networks (LPWANs) are a new generation of wireless communication technology designed for the Internet of Things to provide low energy and long range connectivity. LoRa is one of the promising technology. In this paper, we examine LoRa
Charif Oumaima, Aknin Noura
doaj   +1 more source

Crop producers’ technical efficiency and its determinants in Gurage zone, Ethiopia: A comparative analysis using rural-urban migration as a parameter

open access: yesCogent Social Sciences, 2021
In this study the technical efficiency of crop-producing households and the factors that influence it are explored, and comparisons are made using rural–urban migration as a comparative measure, in Gurage Zone, Ethiopia.
Mesfin Agza   +2 more
doaj   +1 more source

Large inferior vena cava tumor with cardiac extension revealed by venous thrombembolism in a patient with complete situs inversus: what are the odds? [PDF]

open access: yesRomanian Journal of Cardiology, 2021
Venous thromboembolism (VTE) can be the first symptom of an occult malignancy in apparently healthy individual. Inferior vena cava (IVC) tumors are rare conditions but with negative prognosis.
Diana-Andreea Roscaneanu   +5 more
doaj   +1 more source

Preparation and Characterization of Silk Fibroin Nanoparticles as a Potential Drug Delivery System for 5-Fluorouracil [PDF]

open access: yesAdvanced Pharmaceutical Bulletin, 2019
Purpose: The aim of this study is to prepare 5-fluorouracil (5-FU) loaded silk fibroin nanoparticles (SFNPs) and to achieve a controlled release delivery system with the high loading capacity. Methods: SFNPs with 1:1, 1:3, and 1:10 ratios of 5-FU to silk
Hamid Rahmani   +4 more
doaj   +1 more source

Impact of waste materials (glass powder and silica fume) on features of high-strength concrete

open access: yesOpen Engineering, 2023
Pozzolanic materials, glass powder, and silica fume (SF) have all been used in concrete recently as a partial cement substitution to increase the strength of the concrete.
Saify Samir   +7 more
doaj   +1 more source

Experimental study on mechanical properties and microstructures of steel fiber-reinforced fly ash-metakaolin geopolymer-recycled concrete

open access: yesReviews on Advanced Materials Science, 2021
Geopolymer cementitious materials and recycled aggregate are typical representatives of material innovation research in the engineering field. In this study, we experimentally investigated a method to improve the performance of geopolymer-recycled ...
Xu Zhong   +7 more
doaj   +1 more source

Parametric Optimization of WEDM in Machining HSS (8X200) [PDF]

open access: yesEngineering and Technology Journal, 2018
Nontraditional machining processes are used for machining too hard, brittle and strong conductive materials. The aim of this research is to achieve an economic and efficient machining process in machining HSS by using wire cut machine.
Athraa Ahmed
doaj   +1 more source

Evaluation of LoRa nodes for long-range communication

open access: yesNonlinear Engineering, 2022
The Internet of Things concept can be implemented using Long-range wireless access network protocol. The work in this article is done to implement LoRa terrestrial network which will be connected to a satellite in future.
Gupta Gunjan   +2 more
doaj   +1 more source

Severe systemic scleroderma with multiple organ involvement in a 45-years-old patient [PDF]

open access: yesRomanian Journal of Rheumatology, 2021
Systemic scleroderma has inflammation and fibrosis playing a crucial role and eventually leading to severe functional failure and damage of multiple organs.
Violeta Diana Oprea   +4 more
doaj   +1 more source

CAPCANE DE DIAGNOSTIC ÎN PATOLOGIA CERVICALĂ A COPILULUI [PDF]

open access: yesRomanian Journal of Pediatrics, 2011
Patologia cervicală la copil implică numeroase boli cu exprimare clinică asemănătoare. Autorii prezintă două cazuri de afectare laterocervicală non-oncologică la copil (boala zgârieturii de pisică şi malformaţie vasculară venoasă în relaţie cu vena ...
Alina Murgu   +5 more
doaj   +1 more source

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