Results 71 to 80 of about 373,922 (225)

El uso del Internet y su relación con el crecimiento económico: Análisis para Nicaragua

Revista Científica Profundidad Construyendo Futuro, 2023
En los últimos años el Internet ha jugado un rol importante en la dinámica de la economía de los países, por tal motivo, el presente trabajo denominado “El uso del Internet y su relación con el crecimiento económico: Análisis para Nicaragua” tuvo como ...
Humberto Antonio Brenes - González
doaj   +1 more source

When Does Alzheimer's Disease Start? Plasma Aβ42/40 Assays Show Steep Changes at Aβ‐PET Centiloid 15, Mean Age of 66 Years

Annals of Neurology, EarlyView.
Objective Sporadic late‐onset Alzheimer's disease (AD) is characterized by a long pre‐clinical phase where amyloid‐beta (Aβ) and tau begin to accumulate in the brain. The primary objective was to determine the age at which AD starts by finding the average population age when both positron emission tomography (PET) Aβ (Aβ‐PET) and plasma Aβ42/40 become ...
Rodrigo Cánovas, Timothy Cox, Vincent Doré, Pierrick Bourgeat, Jurgen Fripp, Azadeh Feizpour, Rosita Shishegar, Christopher J. Fowler, Simon M. Laws, Tenielle Porter, Stephanie Rainey‐Smith, Leslie M. Shaw, Randall J. Bateman, Yan Li, Ovod Vitaliy, Michael W. Weiner, John C. Morris, Tammie L.S. Benzinger, Suzanne E. Schindler, Akinori Nakamura, Takeshi Iwatsubo, Takeshi Ikeuchi, Takashi Kato, Paul Maruff, Hamid R. Sohrabi, Christopher C. Rowe, Ralph N. Martins, Colin L. Masters, James D. Doecke, for the Alzheimer's Disease Neuroimaging Initiative   +29 more
wiley   +1 more source

Temporal Modeling of Amyloid and Tau Trajectories in Alzheimer's Disease Using PET and Plasma Biomarkers

Annals of Neurology, EarlyView.
Objective This study aimed to compare positron emission tomography (PET) and plasma‐based temporal modeling of amyloid and tau biomarkers in Alzheimer's disease. Methods Longitudinal amyloid PET (n = 1,097, mean age ± SD = 72.5 ± 7.38 year, 51.4% male), 18F‐flortaucipir tau‐PET (n = 230, 74.3 ± 7.18 year, 52.2% female), and Fujirebio Lumipulse plasma p‐
Christopher A. Brown, Katheryn A.Q. Cousins, Magdalena Korecka, Emily McGrew, Alice Chen‐Plotkin, John A. Detre, Corey T. McMillan, Edward B. Lee, Sandhitsu R. Das, Dawn Mechanic‐Hamilton, Paul A. Yushkevich, Ilya M. Nasrallah, Leslie M. Shaw, for the Alzheimer's Disease Neuroimaging Initiative, David A. Wolk   +14 more
wiley   +1 more source

Desastres naturales y crecimiento económico: una síntesis de la evidencia empírica

Nóesis, 2022
Los desastres naturales representan una grave amenaza a nivel mundial y, a futuro, se espera que su frecuencia y severidad aumenten debido al cambio climático.
Fernando Antonio Ignacio Gonza\u0301lez
doaj   +1 more source

Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters

, 1993
We have performed the most comprehensive predictions of the temperature fluctuations \dtt in the primeval isocurvature baryon models to see whether or not the models are consistent with the recent data on the cosmic microwave background anisotropies ...
Chiba, Takashi, Sugiyama, Naoshi, Suto, Yasushi   +2 more
core   +1 more source

DIRECTIONS OF CHANGES OF GRAINS PRODUCTION IN POLAND [PDF]

Annals of the Polish Association of Agricultural and Agribusiness Economists, 2017
The aim of this study was to present changes in the tendency of the cereals production in Poland. Asa source material for this analysis, statistical data from GUS (1950-2015) were used. In the analyzedperiod, the expansion of the cultivation of wheat and
Bogusława Jaśkiewicz, Alicja Sułek
doaj   +1 more source

Analysis of behaviour in the emissions of carbon dioxide of Brazil and other countries based on the Kaya Identity and the Emission Profile

Desenvolvimento e Meio Ambiente, 2018
This study analyzes the behavior of carbon dioxide emissions with regard to the economic and population growth of Brazil and other selected countries over the last two decades.
Gustavo dos Reis Feijó, João Jose de Assis Rangel   +1 more
doaj   +1 more source

Analyse de l’impact du budget programme sur l’économie camerounaise

Revue des Etudes Multidisciplinaires en Sciences Economiques et Sociales, 2020
L’objectif de cet article est d’examiner l’impact du budget programme sur l’économie camerounaise. À partir d’un échantillon de 05 programmes dans les secteurs de l’agriculture, de l’énergie et des infrastructures routières, nous avons évalué les effets ...
Simon ONANA
doaj   +1 more source

Twenty‐Minute Microwave‐Enabled Dual‐Anion Nickel Sulfoselenide Anodes for High‐Capacity Sodium/Potassium‐Ion Batteries and Durable Pouch Cells

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A dual‐anion‐assisted strategy is proposed for designing bi‐functional high‐performance anodes. The preparation of NiSSe/N‐C within 20 min demonstrates rapid Na+/K+ reaction kinetics, exceptional rate capability, and remarkable cycling stability. Nickel‐based materials are promising anode candidates for sodium‐ion batteries and potassium‐ion batteries ...
Yayun Zheng, Qiu He, Jitao Shang, Shasha Wei, Haoqing Jiang, Zhaohuai Li, Yan Zhao   +6 more
wiley   +1 more source

Produto Interno Bruto municipal: conceituação, metodologia e análise para a cidade do Rio de Janeiro

Coleção Estudos Cariocas, 2008
Este texto foi produzido em virtude da demanda do Instituto Municipal de Urbanismo Pereira Passos (IPP), e é voltado aos leitores sem ou com pouca familiaridade no assunto.
Gilda Santiago
doaj   +1 more source