Results 141 to 150 of about 63,355 (311)

Sintesis Kopoli(Eugenol-DVB) Sulfonat dari Eugenol Komponen Utama Minyak Cengkeh (Syzygium aromaticum) [PDF]

open access: yes, 2004
Cationic co-polymerization between eugenol and divinilbenzene (DVB) (2%, 4%, 6%, 8%, 10% and 12%) with BF3O(C2H5)2 as a catalyst at room temperature without media under nitrogen atmosphere has been investigated.
Handayani, Desi Suci   +2 more
core  

Poor Upstream Passage for Endangered Atlantic Salmon (Salmo salar) at a Trap‐and‐Transport Fishway in the Wolastoq/Saint John River, New Brunswick

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Declines of Atlantic salmon (Salmo salar) in the Wolastoq/Saint John River have largely coincided with hydropower development, and there is an urgent need to understand the status of bidirectional passage at existing barriers. We evaluated upstream passage efficiency and duration at the lowermost hydroelectric dam (Mactaquac Generating Station)
C. Ryan Hill   +5 more
wiley   +1 more source

OPTIMASI PENINGKATAN KADAR EUGENOL DALAM MINYAK ATSIRI DAUN CENGKEH MENGGUNAKAN METODE SAPONIFIKASI-DISTILASI VAKUM DENGAN VARIASI REFLUK (Optimization of Increasing Eugenol Content in Essential Oil of Clove Leaves Using Saponification-Distillation Vacuum with Reflux Variations) [PDF]

open access: yes, 2017
Clove leaf essential oil (Syzygium aromaticum) is an essential oil with eugenol main component which is many used in pharmaceutical industry and perfume industry which including high commodity marked indonesia’s exports is 60% from all requirement of ...
SUGIANTI, MIFTA
core  

Recent progress of heterocycle ring‐opening (co)polymerization for the synthesis of sequence‐controlled block polyesters and polycarbonates

open access: yesSmart Molecules, EarlyView.
Block copolymers are fundamental for the development of smart molecules. Aliphatic polyesters and polycarbonates have received attention as heteroatom‐containing polymers that are biodegradable and biocompatible. Block polymers from polyesters and polycarbonates have the ability to form smart molecules. This review presents the heterocycle monomer ring‐
Hongyu Zhao   +3 more
wiley   +1 more source

Resolving taxa in a challenging orchid species complex using evidence from phylogenetics, morphometrics and floral scent chemistry

open access: yesTAXON, EarlyView.
Abstract Species can be difficult to circumscribe using morphology alone, and additional data can thus be useful for resolving challenging species complexes. Here we provide a case study of a South African orchid species complex which we resolved by analysing morphology, floral scent chemistry and molecular data.
Steven D. Johnson, Benny Bytebier
wiley   +1 more source

Effect of modified atmosphere on storage life of purple passionfruit and red tamarillo : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Horticultural Science at Massey University [PDF]

open access: yes, 2007
This study investigates methods to improve storage life of purple passionfruit (Passiflora edulis Sims) and tamarillo (Cyphomandra betacea (Cav.) Sendt).
Pongjaruvat, Wattana
core  

Effects of competition and predation risk from a life history intraguild predator on individual specialisation

open access: yesJournal of Animal Ecology, EarlyView.
Individual niche specialisation is widespread within animal populations and can have important ecological consequences. Predation and competition are known drivers of individual specialisation, but their combined effects are unstudied. This mesocosm experiment shows that competition and predation from a single antagonist can have variable effects on ...
Marine R. A. Richarson, Travis Ingram
wiley   +1 more source

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