Results 101 to 110 of about 1,710,928 (297)

Liquidity constraints and investment in transition economies - the case of Bulgaria [PDF]

open access: yes
The authors use firm level data on Bulgaria to investigate the impact of liquidity constraints on firms'investment performance. Internal funds are a important determinant of investment in most industrial economies.
Budina, Nina   +2 more
core  

Synergistic Coupling of Host and Electrolyte Achieving 1270 Wh L−1 in Anode‐Free Lithium Metal Batteries

open access: yesAdvanced Materials, EarlyView.
A synergistic combination of a highly reversible host and a commercially viable carbonate‐rich electrolyte enables simultaneous stabilization of both anode and cathode interfaces in anode‐free lithium metal batteries. This integrated strategy delivers exceptional reversibility and a record volumetric energy density of 1270 Wh L−1 (including package) in
Dong‐Yeob Han   +9 more
wiley   +1 more source

Financial constraints: Are there differences between manufacturing and services? [PDF]

open access: yes
This paper is the first to explicitly explore the differences in firms' financial constraints between and within sectors of economic activity, by estimating the sensitivities of cash holdings to cash-flow upon an unique dataset of Portuguese firms.
Carlos Carreira, Filipe Silva
core  

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

open access: yesAdvanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena   +10 more
wiley   +1 more source

Elected Oligarchy and Economic Underdevelopment: The Case of Guyana [PDF]

open access: yes
This study proposes the idea that Guyana’s present government can be categorized as an elected oligarchy. It highlights the existence of several binding constraints (or structural bottlenecks) and demonstrates how these constraints are exacerbated by the
Hinova, Diana, Khemraj, Tarron
core   +1 more source

Performance Constraints of All‐Perovskite Tandem Solar Cells in Low‐Intensity, Low‐Temperature Environments

open access: yesAdvanced Materials, EarlyView.
All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen   +10 more
wiley   +1 more source

Entropy and the Limits to Growth

open access: yesEntropy
In its business-as-usual scenario, the 1972 Club-of-Rome report—The Limits to Growth—describes the collapse of the world economy around the year 2030, either because of the scarcity of natural resources or because of pollution. Mainstream economists, the
Reiner Kümmel
doaj   +1 more source

Financial Constraints: Routine Versus Cutting Edge R&D Investment [PDF]

open access: yes
We analyze financial constraints for R&D, where we account for heterogeneity among investments which has been neglected in previous literature. According to economic theory, investments should be distinguished by their degree of uncertainty, e.g. routine
Binz, Hanna L., Czarnitzki, Dirk
core  

Stochastic Frontiers and Asymmetric Information Models [PDF]

open access: yes, 1998
This article suggests that the global inefficiency which generally affects a production process is endogenous and depends on the incentives generated by the process environment.
Gagnepain, Philippe, Ivaldi, Marc
core   +1 more source

Perspective on Aqueous Batteries: Historical Milestones and Modern Revival

open access: yesAdvanced Materials, EarlyView.
This review retraces the development of aqueous batteries from classical Zn‐MnO2 chemistry to modern Zn and Ni systems, correlating voltage, capacity, and electrolyte formulation with practical performance. By mapping historical success and failure onto current and future research directions, it identifies guiding principles that steer the design of ...
Fangwang Ming   +5 more
wiley   +1 more source

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