نتایج جستجو برای: biological routes
تعداد نتایج: 495262 فیلتر نتایج به سال:
For sessile marine invertebrates, processes contributing to larval release, dispersal, and settlement in favourable habitats are central to patterns of distribution and community structure. We quantified larval release patterns, phototactic behaviour, and settlement in response to environmental cues for the coral reef sponge Luffariella variabilis. Individual sponges released up to 830 larvae d...
An efficient synthesis of trialkyl (E)-3-(3-Oxo-2-3,4-dihydro-2-(1H)-quinoxalinylidene)-prop-1-ene-1,2,3-tricarboxylate derivatives via a simple three-component reaction between benzene-1,2-diamines with dialkyl acetylenedicarboxylates in the presence of K2CO3-PEG catalytic system at 100 oC was reported. The desired products were obtained in excellent yields (88-92%). Various benzene-1,2-diamin...
Lignin is a substantial component of lignocellulosic biomass but is under-utilized relative to the cellulose and hemicellulose components. Historically, lignin has been burned as a source of process heat, but this heat is usually in excess of the process energy demands. Current models indicate that development of an economically competitive biorefinery system requires adding value to lignin bey...
he U.S. dollar clearing and settlement system was little noticed during the recent financial crisis, mainly because it performed dependably, processing record volumes and values of trades made in stressed financial markets. Its successful operation was in part a result of the collaborative efforts undertaken by stakeholders over decades to improve risk management and operational resiliency. Und...
Initial and Subsequent Location Choices of Immigrants to the Netherlands The initial settlement behaviour and the subsequent mobility of immigrants who arrived in the Netherlands in 1999 are examined using rich administrative individual data. The study considers the settlement patterns of immigrants from various countries of origin who entered the country as labour, family or asylum migrants. T...
Beginning in the late 1980s, lobster (Homarus americanus) landings for the state of Maine and the Bay of Fundy increased to levels more than three times their previous 20-year means. Reduced predation may have permitted the expansion of lobsters into previously inhospitable territory, but we argue that in this region the spatial patterns of recruitment and the abundance of lobsters are substant...
Cytosporones, a class of octaketide resorcinolic lipids, have drawn the attention researchers for exhibiting number notable biological properties. Herein, we describe routes to synthesize bioactive synthetic lipids AMS35AA and AMS35BB with excellent overall yields using 3,5-dimethoxybenzoic acid as starting material. The methods proved remarkably efficient achieve target compounds comprise synt...
The cyclic depsipeptide largazole from a cyanobacterium of the genus Symploca is a marine natural product with a novel chemical scaffold and potently inhibits class I histone deacetylases (HDACs). Largazole possesses highly differential growth-inhibitory activity, preferentially targeting transformed over non-transformed cells. The intriguing structure and biological activity of largazole have ...
One-carbon substrates have generated increasing attention as long-term sustainable feedstocks for biobased production of fuels and chemicals. However, their physicochemical properties present significant biological and operational challenges for commercial bioprocesses including kinetically slower substrate activation, high energetic cost of assimilation, low mass transfer, substrate toxicity, ...
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