Results 1 to 10 of about 513,872 (297)

Design of a GSM 900 Energy Harvesting Model for a Remote-Control Device [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2022
This paper deals with designing and simulation of an efficient RF-DC energy harvesting system for a remote control device. GSM down-link frequency of 935MHz to 960MHz and uplink frequency of 890MHz to 915MHz is taken as the RF source with centre ...
Deepak Kumar Nayak, Arjuna Muduli
doaj   +1 more source

Venezia ’900: il secolo delle mostre

open access: yesLaboratoire Italien, 2014
For Venice, the 20th century was a century of exhibitions, since the “invention” of the Biennale in 1895. With the development of cultural tourism, art exhibitions have flourished.
Nico Stringa
doaj   +1 more source

DEN NYE HISTORIESKRIVNING I 900-TALLET

open access: yesKulturstudier, 2019
Med Liudprand af Cremonas værk Antapodosis blomstrede historieskrivningen op efter en 50-årig stilstandsperiode i det østfrankiske rige. Samtidig skete et skift i den foretrukne historiske genre.
Sigga Engsbro
doaj   +1 more source

Bryozoan statoblasts from lake sediments in Madagascar, including two new species

open access: yesEuropean Journal of Taxonomy, 2023
Madagascar is a freshwater biodiversity hotspot, yet the current understanding of freshwater bryozoan diversity is limited. Using a dissecting microscope, bryozoan statoblasts were collected during macrofossil analysis of a sediment core, which was ...
Timothy S. Wood   +2 more
doaj   +1 more source

Factors of improving fatigue strength in resistance spot welded high-strength steel sheets with tempering treatment

open access: yesNihon Kikai Gakkai ronbunshu, 2021
Fatigue strength of resistance spot welded high-strength steels does not improve with increasing base metal strength. Therefore, cold-working method and tempering treatment have been proposed as methods for improving fatigue strength.
Akira SATO   +5 more
doaj   +1 more source

Scale effect on mechanical properties of titanium aluminide alloy additively manufactured by electron beam melting

open access: yesNihon Kikai Gakkai ronbunshu, 2021
TiAl (titanium aluminide) has been applied to turbine blades in aerospace industry, because it is a promising lightweight material with high strengths at high temperatures. In recent years, the production method of TiAl by additive manufacturing has been
Kazuhiro GOKAN   +4 more
doaj   +1 more source

Dimensionless numerical analysis method for flexible body with large deformation, displacement and time-varying length

open access: yesNihon Kikai Gakkai ronbunshu, 2021
A tethered system, which is a multibody system in which multiple rigid bodies are connected via a flexible tether, is currently used for space and deep-sea exploration.
Riko OGAWARA, Yoshiaki TERUMICHI
doaj   +1 more source

Newly-Found Poems in 900 Anthology [PDF]

open access: yesمتن شناسی ادب فارسی, 2013
Nowadays, there is no doubt that any exploration into old Persian poetry will be incomplete without recourse to anthologies and collections of poem. Anthologies are of importance because they keep intact the name and traces of unknown poets and their ...
h Khatamipour, m Sharifi Sohi
doaj  

A study of the nerve root damage in whiplash injury occurrence mechanisms using human head-neck finite element model

open access: yesNihon Kikai Gakkai ronbunshu, 2021
The number of whiplash injuries in rear-end collisions is still high worldwide. Since the 1990s, many researchers have studied the mechanisms of injury occurrence in which were focused in the early stage of the rear impact. However, the current situation
Junji HASEGAWA   +2 more
doaj   +1 more source

Description of the male of Craugastor yucatanensis (Lynch, 1965) (Anura, Craugastoridae), its advertisement call, and additional data on females [PDF]

open access: yesZooKeys, 2019
The male of Craugastor yucatanensis (Lynch, 1965) is described for the first time, as the original description was based on four females. The advertisement call is described and additional morphological data on females are presented. Also, information is
Rubén Alonso Carbajal-Márquez   +5 more
doaj   +3 more sources

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