Results 121 to 130 of about 4,908,628 (384)

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Stabilizing Cationic Palladium Single‐Atom Sites on Heteroatom‐Doped Carbon for Selective Hydrogen Peroxide Electrosynthesis

open access: yesAdvanced Functional Materials, EarlyView.
In this research, it is demonstrated that dual nitrogen and sulfur doping in hollow carbon spheres creates a tunable coordination environment that stabilizes cationic Pd single atoms as robust organometallic complexes, enabling high selectivity and stability for electrochemical hydrogen peroxide production under harsh acidic and peroxide‐rich ...
Guilherme V. Fortunato   +16 more
wiley   +1 more source

A Conversation with Fay Probert

open access: yesACS Central Science, 2023
Rachel Brazil
doaj   +1 more source

Preparation of sand fly (Diptera: Psychodidae: Phlebotominae) specimens for histological studies

open access: yesMemorias do Instituto Oswaldo Cruz, 2003
Phlebotominae sand fly specimens were prepared for histological and physiological studies. Different fixatives were tested on sectioned and whole bodied adult females in order to obtain good fixation and provide satisfactory penetration of the embedding ...
Brazil Beatriz Gomes   +2 more
doaj  

Brazil [PDF]

open access: yesThe ANNALS of the American Academy of Political and Social Science, 1916
n ...
openaire   +1 more source

Regional Meeting on the Philanthropy Sector in Latin America and the Caribbean [PDF]

open access: yes, 2003
WINGS, in collaboration with GIFE (Brazil), co-sponsored a regional meeting on philanthropy in Brazil. The meeting, held in Sao Paulo 21-22 November 2002, focused on ways that the countries in the Latin America-Caribbean (LAC) region can enhance their ...

core  

A Comprehensive Review of Clinical Studies on Bacterial Cellulose: From the Earliest Uses to Contemporary Innovations

open access: yesAdvanced Healthcare Materials, EarlyView.
Bacterial cellulose has undergone a transformative journey from early applications to its role in advanced regenerative medicine. The review has a pedagogical ambition, offering clear pathways for future research and clinical adoption. Harmonizing regulatory standards and conducting larger, well‐designed clinical trials with standardized endpoints will
Thomas Meslier   +3 more
wiley   +1 more source

Migration, Remittances and Nutrition Outcomes of Left-Behind Children: A National-Level Quantitative Assessment of Guatemala.

open access: yesPLoS ONE, 2016
Historically, Guatemalans have suffered high rates of poverty and malnutrition while nearly ten percent of their population resides abroad. Many Guatemalan parents use economic migration, mainly international migration to the United States, as a means to
Jason Davis, Noli Brazil
doaj   +1 more source

Notes on Neotropical Veliidae (Hemiptera). IX: additional new species of Paravelia from South America

open access: yes, 1984
Four new species of Paravelia are described: P. dilatata from Surinam and Brazil; P. foveata, P. cupariana and P.
Polhemus , D., Polhemus, J.
core  

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