Results 71 to 80 of about 569,497 (166)

As produções cerâmicas de imitação na Hispânia. [PDF]

open access: yes, 2014
Cerâmicas romanas da Torre Velha (Castro de Avelãs, Bragança).
André, Clara   +4 more
core  

Use of the same polymer for synthesis and purification of peptides [PDF]

open access: yes, 2005
This work reveals an uncommon but valuable biotechnological approach regarding the use of a same polymer (benzhydrylamine-resin, BHAR) for synthesis and anion exchange purification of peptides. Initially, the octapeptide DRVYIHPF-NH2 was synthesized in 1%
Carvalho, Regina S. H.   +5 more
core   +3 more sources

Bifunctional MOF‐on‐MOF‐Derived CuCo2O4 for Oxygen Evolution Reaction Electrocatalysis and Supercapacitor Electrodes

open access: yesChemistryOpen, Volume 14, Issue 12, December 2025.
A bifunctional copper cobalt oxide derived from metal‐organic frameworks was synthesized with a spinel structure and coral reef‐like morphology. It showed excellent activity for the oxygen evolution reaction, with overpotential of 317 mV at 10 mA cm−2 and Tafel slope of 49 mV dec−1.
Johnnys da Silva Hortêncio   +6 more
wiley   +1 more source

Use of chitin as a template for the preparation of mesostructured ZSM-5

open access: yesCerâmica
In this work, mesostructured ZSM-5 zeolite was prepared using chitin as a new template to produce mesoporosity. Different amounts of chitin were used for the synthesis of ZSM-5 in order to verify its influence on the formation of mesopores.
F. C. Drumm   +7 more
doaj   +1 more source

Avaliação do desempenho econômico-financeiro da produção de soja nos estados do Rio Grande do Sul e de Santa Catarina, para a safra 2011/12. [PDF]

open access: yes, 2016
Procedimentos e cálculos associados às receitas e aos custos da produção de soja. Procedimentos e cálculos associados aos indicadores de viabilidade econômico-financeira da produção de soja. Resultados. Fig 1.
HIRAKURI, M. H.
core  

Mammals with large home ranges, low reproductive rates and small body sizes are most vulnerable to roads: A meta‐analysis

open access: yesJournal of Applied Ecology, Volume 62, Issue 12, Page 3227-3239, December 2025.
Road mitigation for mammals should ideally be informed by site‐level knowledge and generally involve prioritizing species with the combination of larger home ranges, lower reproductive rates and smaller body sizes. To protect these vulnerable mammals from roads, we should maintain low road densities and instal small‐mesh mitigation fencing along roads.
Sean Patterson   +6 more
wiley   +1 more source

Strategies for the synthesis and molecular modeling aiming to discover biorational agricultural insecticides

open access: yesOrbital: The Electronic Journal of Chemistry, 2012
This work presents two proposals for the synthesis of halogenated aryl thiosulfonates which are of biologically interesting compounds. Inhibitors    of proteases and juvenile hormone mimetizing are already successfully employed for managing pest-insects ...
Rejane G. D. Khodyuk   +5 more
doaj   +1 more source

Climate Change‐Induced Distribution Shifts of Keratin‐Feeding Beetle Omorgus (Omorgus) suberosus: Implications for Olive Ridley Sea Turtle Lepidochelys olivacea Conservation

open access: yesAnimal Conservation, Volume 28, Issue 6, Page 803-816, December 2025.
Our study projects significant climate change‐induced distribution shifts of a keratin‐feeding beetle Omorgus suberosus, with expansions into higher latitudes in Europe and North America and notable habitat losses in tropical regions by 2100. Ecological niche models predict a global habitat reduction of 9.5% under SSP2–4.5 and 20.8% under SSP5–8.5 ...
Janderson Batista Rodrigues Alencar   +4 more
wiley   +1 more source

SÍNTESE E AVALIAÇÃO DA ATIVIDADE ANTIMALÁRICA DE NOVOS OZONÍDEOS

open access: yesEclética Química, 2018
A reação de cicloadição [3+4] entre diferentes dienos (ciclopentadieno, 2-metilfurano e furano) e halocetonas levou aos cicloadutos correspondentes, cuja reação de ozonólise forneceu os ozonídeos 3a,5a-Dimetil-8,9,10-trioxatriciclo[5.2.1.12,6]undecan-4 ...
Luiz Cláudio de Almeida BARBOSA   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy