scholarly journals No such thing as a free lunch: interaction costs and the structure and stability of mutualistic networks

Oikos ◽  
2020 ◽  
Vol 129 (4) ◽  
pp. 503-511 ◽  
Author(s):  
Guadalupe Peralta ◽  
Daniel B. Stouffer ◽  
Eduardo M. Bringa ◽  
Diego P. Vázquez
Keyword(s):  
Free Lunch ◽  
Structure And Stability ◽  
Mutualistic Networks ◽  
Interaction Costs

Beyond Free Lunch: Alternative Poverty Measures in Educational Research and Program Evaluation

2005 ◽  
Author(s):  
Anja Kurki ◽  
Andrea Boyle ◽  
Daniel K. Aladjem
Keyword(s):  
Program Evaluation ◽  
Educational Research ◽  
Free Lunch ◽  
Poverty Measures

Geldordnung: Schuldenkrise oder free lunch?

2013 ◽  
Vol 42 (4) ◽  
pp. 197-201
Author(s):  
Johann Walter
Keyword(s):  
Free Lunch

‘There’s No Such Thing as a Free Lunch’: Reciprocity in Mycenaean Political Economies

2016 ◽  
Vol 29 (1) ◽  
pp. 78-88
Author(s):  
Daniel J. Pullen
Keyword(s):  
Free Lunch ◽  
Political Economies

Polyplex: A Promising Gene Delivery System

2019 ◽  
Vol 12 (6) ◽  
pp. 4681-4686
Author(s):  
Rohan Aggarwal ◽  
Monika Targhotra ◽  
Bhumika Kumar ◽  
P.K Sahoo ◽  
Meenakshi K Chauhan
Keyword(s):  
Gene Transfer ◽  
Gene Delivery ◽  
Delivery System ◽  
Viral Vectors ◽  
Gene Delivery System ◽  
Cationic Polymers ◽  
Therapeutic Application ◽  
Promising Alternative ◽  
Structure And Stability ◽  
The Past

In the past few years gene delivery system has gained a huge attention owing to its proved efficacy in several diseases especially in those caused by genetic and/oroncological malfunctioning. The effective gene delivery mainly depends on the carrier molecules that can ensure the safe and specific delivery of the nucleic acidmolecules. Viral vectors have been used for a longer period as the gene transfer vehicle. However, these viral vectors have potential immunological disadvantages that made them less preferred. Recently, non-viral vectors such as polyplexes have emerged as a promising alternative for viral vectors. Polyplexes are formed by conjugating a polymer with DNA and in maximum cases the cationic polymers are preferred over others. The structure and stability of the polyplexes depends on various factors. The ability of the polymer to condense the DNA mainly dictates the efficiency of the polyplex mediated transfection. In this review we are going to provide a framework for the synthesis and design of the polyplexes along with the structure and stability of the complexes pertaining to mechanism of action, characterization and therapeutic application, including polyethyleneimine mediated cytotoxicity as well as newer strategies for the generation of better polyplexes.

Currency Hedging - A Free Lunch?

2009 ◽  
Author(s):  
MSCI Inc.
Keyword(s):  
Free Lunch ◽  
Currency Hedging
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