Results 51 to 60 of about 309,563 (194)

Quantum authentication with unitary coding sets [PDF]

open access: yes, 2002
A general class of authentication schemes for arbitrary quantum messages is proposed. The class is based on the use of sets of unitary quantum operations in both transmission and reception, and on appending a quantum tag to the quantum message used in ...
David J. Santos   +8 more
core   +2 more sources

Marketization in Public Purchasing as a Route to Business Corporations' Institutional Power: The Case of Outsourcing Social Services in Israel

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT What are the conditions under which business corporations expand their institutional power? This paper argues that institutional power is affected by the architecture of the “acquisition regime”—the set of formal (and informal) rules that govern how states purchase public services.
Reut Marciano, Shir Gal
wiley   +1 more source

“Umbilical mass”: a case of primary umbilical endometriosis and literature review

open access: yesClinical and Experimental Obstetrics & Gynecology, 2021
Background: To report on a case of primary Umbilical Endometriosis (PUE). Case: We report a new rare case of PUE in a 45-year-old woman arising in the umbilicus, presenting as three purple-blue firm masses with a smooth surface, and clear borders.
Jian-Zhong Pan   +5 more
doaj   +1 more source

Energy efficient hybrid satellite terrestrial 5G networks with software defined features [PDF]

open access: yes, 2017
In order to improve the manageability and adaptability of future 5G wireless networks, the software orchestration mechanism, named software defined networking (SDN) with Control and User plane (C/U-plane) decoupling, has become one of the most ...
Evans, Barry   +5 more
core   +1 more source

Enhancing camelina [Camelina sativa (L.) Crantz] productivity in acidic Ethiopian soils: Synergistic effects of coffee husk biochar and phosphorus

open access: yesAgrosystems, Geosciences &Environment, Volume 9, Issue 1, March 2026.
Abstract Acidic soils in Ethiopia's Hadiya Zone limit crop production through aluminum toxicity and phosphorus (P) fixation, which constrain camelina potential. Though drought tolerant, camelina needs sufficient P. Triple superphosphate (TSP) often becomes ineffective because P is rapidly fixed; coffee husk biochar may reduce fixation and improve P ...
Daniel Manore   +2 more
wiley   +1 more source

Wheat Yield Response to Organic Fertilisers Depends on Drought Timing in a Sandy Soil

open access: yesJournal of Sustainable Agriculture and Environment, Volume 5, Issue 1, March 2026.
ABSTRACT Organic fertilisers enhance crop drought resilience by improving nitrogen (N) and phosphorus (P) use efficiency and soil‐plant water relations. However, the underlying mechanisms governing their effects across different drought timings in wheat under sandy soils remain unclear.
Muhammad Kamran   +4 more
wiley   +1 more source

Los entramados de lo público: república, plebe, publicidad y población

open access: yesRevista Colombiana de Antropología, 2015
En este ensayo propongo abordar de mane - ra integral las múltiples experiencias de lo público que se manifiestan, en buena parte de nuestras sociedades contemporáneas, aisladas y fracturadas, como si no tuvieran relación una con otra. La premisa es,
Francisco A. Ortega
doaj  

Study on mechanical behaviors and failure mechanism of polyurethane matrix composites inspired by mussel chemistry and arthropod exoskeleton structures under dynamic impact

open access: yesJournal of Materials Research and Technology, 2023
Polyurethane elastomer (PUE), an elastic polymer material of lightweight and unexceptionable mechanical properties, is widely used into the military protective structural materials to resist dynamic impact and absorb energy.
Jun Gao   +6 more
doaj   +1 more source

La pêche palangrière des flottilles japonaise et coréenne dans la zone économique exclusive polynésienne au nord de 16° sud : des sources de données aux analyses de l'activité de pêche et des prises par unité d'effort du thon obèse (Thunnus obesus) [PDF]

open access: yes, 1995
La pêche thonière à la palangre monofilament constitue un secteur d'activité économique en plein développement en Polynésie Française. Ce travail a pour objectif d'améliorer les connaissances relatives à cette pêcherie dans la Zone Economique Exclusive ...
Thiriez, Gilbert
core  

Evaluation of diverse elite and landrace maize lines for testcross hybrid performance and combining ability under low and high phosphorus fertilization regimes

open access: yesCrop Science, Volume 66, Issue 1, January/February 2026.
Abstract In the context of over‐fertilization, especially of phosphorus (P), the debate about the usefulness of applying starter fertilization to maize (Zea mays L.) must be revisited. One solution is to breed crops with an enhanced phosphorus use efficiency, which require less fertilizer yet are high‐yielding.
Wanda M. Haller   +5 more
wiley   +1 more source

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