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Push-Pull-Triacetylene und Push-Pull-Tetraacetylene
CHIMIA, 1984 The first synthesis of push-pull-triacetylenes of type 3 as well as of push-pull-tetraacetylenes of type 4 is described (Scheme 2). Perchlorobutenyne 5 is reacted with the lithium-ynamine 6a and the lithium-diynamine 7b respectively.
Urs Stämpfli, Markus Neuenschwander
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CHIMIA, 1981 The first synthesis of push-pull-diacetylenes of type 4 is described. Reaction of perchloro-butenine (13) with 2 equivalents of dialkylamine, followed by filtration and dechlorination by means of 2 equivalents of butyllithium gives lithium-dialkyl-amino-
Urs Stämpfli, Markus Neuenschwander
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A push-pull unsymmetrical subphthalocyanine dimer [PDF]
Chemical Science, 2015 Unsymmetrical subphthalocyanine fused dimers have been prepared from appropriate ortho-dinitrile SubPc precursors. In particular, either electron-donating or electron-accepting substituents have been introduced on each SubPc constituent unit, resulting ...
Claessens, Christian G. +6 more
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, 2006 Scientific innovation takes two distinct paths. Sometimes, companies ask researchers to develop a solution for a specific business problem. This is a demand-driven, “PULL” method. In other cases, scientists develop a technology with new valuablecapabilities, and then search for commercial applications. This is a supply-driven, “PUSH” method.
Kolodovski, A.
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Factors influencing customers’ switching intentions to new energy vehicles based on the push-pull mooring model using SEM-ANN approach in Shanxi, China [PDF]
Scientific ReportsThis study applied the Push-Pull Mooring (PPM) theoretical framework to investigate how push, pull, and mooring factors influence sustainable transportation choices.
Zhang Juanjuan, Ratneswary Rasiah
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Push–pull farming systems [PDF]
Current Opinion in Biotechnology, 2014 Farming systems for pest control, based on the stimulo-deterrent diversionary strategy or push-pull system, have become an important target for sustainable intensification of food production. A prominent example is push-pull developed in sub-Saharan Africa using a combination of companion plants delivering semiochemicals, as plant secondary metabolites,
Pickett, J. A. +3 more
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Frontiers in Built Environment, 2022 Push planning and pull planning are different approaches used for production planning and control. Push planning uses predetermined dates to control a project, whereas pull planning utilizes the system’s current state.
Malek Ghanem +4 more
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Farming System, 2023 Climate change and land degradation adversely affect food security in sub-Saharan Africa (SSA). Smallholder farmers are the most affected. Therefore, it is imperative to identify technologies that boost resilience to climate change, and restore lands ...
Pierre Celestin Ndayisaba +4 more
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Push–Pull With Device Sampling
IEEE Transactions on Automatic Control, 2023 We consider decentralized optimization problems in which a number of agents collaborate to minimize the average of their local functions by exchanging over an underlying communication graph. Specifically, we place ourselves in an asynchronous model where only a random portion of nodes perform computation at each iteration, while the information ...
Yu-Guan Hsieh +3 more
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Push-pull technology improves carbon stocks in rainfed smallholder agriculture in Western Kenya
Carbon Management, 2022 Push-pull technology improves agricultural productivity. However, its long-term effect on biomass carbon and soil organic carbon (SOC) is not yet known.
Pierre Celestin Ndayisaba +4 more
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