Results 51 to 60 of about 39,305 (203)

4H-yrittäjyys nuorten työelämätaitoja edistämässä: 4H-yrittäjien kokemukset Jyvässeudun 4H-yhdistyksen toiminnassa [PDF]

, 2019
Opinnäytetyössäni tutkin Jyvässeudun 4H-yhdityksen toimintaan kuuluvaa 4H-yrittäjyyttä. 4H-yrittäjyyden kohderyhmänä ovat 13-28-vuotiaat nuoret ja toimintaa toteuttavat 4H-yhdistykset eri puolilla Suomea.
Jokinen, Kaisa
core  

Characterisation of Sex Pheromone and Genetic Strain in Rachiplusia nu (Lepidoptera: Noctuidae) Populations Across Brazil

Journal of Applied Entomology, Volume 150, Issue 6, Page 791-802, July 2026.
ABSTRACT Rachiplusia nu, known as the sunflower looper (SFL) and belonging to the Plusiinae subfamily, is a major defoliator of soybeans, sunflowers and other horticultural crops across southern South America. This species has recently expanded to central and northern regions of Brazil, becoming a key soybean pest.
Leonardo Figueiredo, Diego B. Silva, Alan V. Saldanha, Alberto S. Corrêa, Aluska T. dos Santos, Paulo H. G. Zarbin   +5 more
wiley   +1 more source

Magnetic Graphitic Carbon Nitride-Catalyzed Highly Efficient Construction of Functionalized 4H-Pyrans

, 2018
A high-yielding, practical, efficient, and environmentally benign one-pot multicomponent synthesis of functionalized 2-amino-4H-pyrans from β-dicarbonyl compounds, malononitrile, and aldehydes is presented.
Najmedin Azizi, Tahereh Ahooie, Mohammad Hashemi, Issa Yavari   +3 more
core   +1 more source

Hybrid Cosensitization via Fluorescence Resonance Energy Transfer in Emerging Photovoltaic Technologies

Advanced Energy and Sustainability Research, Volume 7, Issue 6, June 2026.
Hybrid cosensitization improves solar cell performance by enhancing light absorption and charge transfer through the combination of various sensitizers. The application of molecular engineering to dyes, quantum dots, and perovskites increases efficiency and stability.
Pankaj Bhujbal, Sahil Saini, Shashikant P. Patole, Habib Pathan, Devnath Dhirhe   +4 more
wiley   +1 more source

Strategian kehittäminen paikalliseen nuorisojärjestöön. Hankasalmen 4H-yhdistyksen strategian kehittäminen [PDF]

, 2020
Paikallisiin 4H-yhdistyksiin ei ole Suomen 4H-liiton järjestöpäällikön tiedon mukaan tehty viimeisten vuosien aikana kuin kaksi strategiaa. 4H-yhdistyksessä työskennellessäni näin kuitenkin kuinka konkreettisen strategian olemassaolo helpottaisi ...
Nyyssönen, Sampsa
core  

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela, Raffael Silva Santos Almeida, Ivana Ferreira Simões, Aline Gonçalves Miranda, Magno Oliveira Ramos, Roberto Rodrigues Bandeira Tosta Maciel, Fernanda Warken Rosa, Aníbal de Freitas Santos Júnior   +7 more
wiley   +1 more source

Copper Joins the Monoelectronic Game: Leveraging the CuI Potential for SET‐, XAT‐, and HAT‐Driven Catalytic Organic Synthesis

ChemCatChem, Volume 18, Issue 11, 15 June 2026.
This review surveys the emerging role of copper(I) catalysis in sustainable synthesis, highlighting its exceptional capacity for monoelectronic processes. By examining the strategies based on electron, halogen, and hydrogen transfer processes (SET, XAT, and HAT, respectively), we outline key reactivity trends, design principles, and the synthetic ...
Antonio Torres‐Calis, Juventino J. García   +1 more
wiley   +1 more source

Organobase-catalyzed three-component reactions for the synthesis of 4H-2-aminopyrans, condensed pyrans and polysubstituted benzenes

Beilstein Journal of Organic Chemistry, 2014
Novel routes for the preparation of 2-amino-4H-pyran-3-carbonitrile 9, amino-arylbenzoic acid ester derivatives 13a,b, 2-aminotetrahydro-4H-chromene-3-carbonitrile 18, 3-amino-4-cyanotetrahydronaphthalene-2-carboxylic acid ester 26 and 4-amino-3,5 ...
Moustafa Sherief Moustafa, Saleh Mohammed Al-Mousawi, Maghraby Ali Selim, Ahmed Mohamed Mosallam, Mohamed Hilmy Elnagdi   +4 more
doaj   +1 more source

Phenolic Profiles, Antioxidant Properties and Predicted Glycaemic Index of Bread Sweetened With Date Syrup in Comparison With Granulated Sugar

Food Chemistry International, Volume 2, Issue 2, Page 236-245, June 2026.
Date syrup are used as sweetener in bread. Bread with date syrup had superior phenolic composition, better antioxidant properties and carbohydrate hydrolysing enzymes while bread with granulated sugar had higher predicted glyceamic index. The study concluded that date syrup could be the next though‐out ingredient for dual purpose in bread. ABSTRACT The
Akinsola Albert Famuwagun, Tijesuni Oloyede, Adebola Iyabode Akinjokun, Rachael Taiwo Babalola, Olamide Atinuke Idowu, Adedayo Adeboye, Oluseye Oladapo Abiona, Saka Olasunkanmi Gbadamosi   +7 more
wiley   +1 more source

Dual-site synergistic copper-polyoxoniobate: Ultralow-energy mechanochemical synthesis of bioactive 4H-pyrans

Nano Research
A copper-polyoxoniobate cluster (Cu-PONb) featuring Lewis acid/base dual sites was developed for the ultralow-energy mechanochemical synthesis of pharmacologically relevant 2-amino-3-cyano-4H-pyrans (ACPs).
Jiaqi Qin, Hongrui Tian, Weina Cai, Hui Chen, Zouguang Han, Yanfeng Bi, Baokuan Chen   +6 more
doaj   +1 more source