Results 71 to 80 of about 7,343,448 (193)

Synchronized crystallization in tin-lead perovskite solar cells

open access: yesNature Communications
Tin-lead halide perovskites with a bandgap near 1.2 electron-volt hold great promise for thin-film photovoltaics. However, the film quality of solution-processed Sn-Pb perovskites is compromised by the asynchronous crystallization behavior between Sn and
Yao Zhang   +10 more
doaj   +1 more source

Abnormal grain growth in randomly-oriented fine grains in an Al–Mg–Sc–Zr alloy processed by laser-powder-bed-fusion

open access: yesMaterials Research Letters
In this work, we report a counter-intuitive activation of abnormal grain growth (AGG) in randomly-oriented fine grains (FGs) in an L-PBF Al–Mg–Sc–Zr alloy, which is unlikely from perspectives of curvature-driven grain growth, crystallographic texture or ...
Yanchi Chen   +10 more
doaj   +1 more source

Microstructure and nanoindentation behavior of Cu composites reinforced with graphene nanoplatelets by electroless co-deposition technique

open access: yesScientific Reports, 2017
A reduced graphene oxide/copper (RGO/Cu) composite was fabricated by a surfactant free, electroless co-deposition technique. The graphene oxide (GO) sheets were reduced and RGO homogeneous distributed into the copper matrix.
Qi Zhang   +6 more
doaj   +1 more source

Low-Temperature Soft-Cover-Assisted Hydrolysis Deposition of Large-Scale TiO2 Layer for Efficient Perovskite Solar Modules

open access: yesNano-Micro Letters, 2018
Perovskite solar cells with TiO2 electron transport layers exhibit power conversion efficiency (PCE) as high as 22.7% in single cells. However, the preparation process of the TiO2 layer is adopted by an unscalable method or requires high-temperature ...
Jinjin He   +6 more
doaj   +1 more source

Interactions between the discoidin domain receptor 1 and β1 integrin regulate attachment to collagen

open access: yesBiology Open, 2013
Summary Collagen degradation by phagocytosis is essential for physiological collagen turnover and connective tissue homeostasis. The rate limiting step of phagocytosis is the binding of specific adhesion receptors, which include the integrins and ...
Lisa A. Staudinger   +7 more
doaj   +1 more source

The impact of coaxial gas technology on the morphology of powder by gas atomisation and the additive manufactured mechanical performance

open access: yesVirtual and Physical Prototyping
Metal powders are essential for additive manufacturing (AM), with their morphology significantly impacting the performance of AM components. Gas atomisation (GA) is a common method for producing metal powders due to its efficiency and cost-effectiveness.
Sheng Luo   +9 more
doaj   +1 more source

The Lyapunov matrix equation. Matrix analysis from a computational perspective

open access: yes, 2015
Decay properties of the solution $X$ to the Lyapunov matrix equation $AX + X A^T = D$ are investigated. Their exploitation in the understanding of equation matrix properties, and in the development of new numerical solution strategies when $D$ is not low
Simoncini, Valeria
core  

Matrix code

open access: yesProceedings of the 14th symposium on Principles and practice of declarative programming, 2012
Matrix Code gives imperative programming a mathematical semantics and heuristic power comparable in quality to functional and logic programming. A program in Matrix Code is developed incrementally from a specification in pre/post-condition form. The computations of a code matrix are characterized by powers of the matrix when it is interpreted as a ...
openaire   +2 more sources

Damage-programmable design of metamaterials achieving crack-resisting mechanisms seen in nature

open access: yesNature Communications
The fracture behaviour of artificial metamaterials often leads to catastrophic failures with limited resistance to crack propagation. In contrast, natural materials such as bones and ceramics possess microstructures that give rise to spatially ...
Zhenyang Gao   +7 more
doaj   +1 more source

CLINICAL STUDY REPORT: AN OVERVIEW OF REGULATORY DOCUMENTS AND THE ORGANIZATIONAL AND PRACTICAL ASPECTS OF DEVELOPMENT

open access: yesРазработка и регистрация лекарственных средств, 2019
Clinical study report is one of the main documents during the drug development. The preparation of the clinical study report requires knowledge of Russian and foreign legislation, awareness of guidelines and recommendatioins issued by the professional ...
E. A. Radkova   +3 more
doaj  

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