Results 31 to 40 of about 5,947,585 (288)
A new method for hardness determination from depth sensing indentation tests [PDF]
, 1996 A new semiempirical formula is developed for the hardness determination of the materials from depth sensing indentation tests. The indentation works measured both during loading and unloading periods are used in the evaluation.
Juhász, A. +2 more
core +1 more source
Reactivity and Stability of Metalloporphyrin Complex Formation: DFT and Experimental Study
Molecules, 2020 The interaction of three cationic porphyrins—meso-tetrakis (N-methylpyridinium-4-yl) porphyrin (TMPyP), meso-tetrakis (1,3-dimethylimidazolium-2-yl) porphyrin (TDMImP), and meso-tetrakis (1,2-dimethylpyrazolium-4-yl) porphyrin (TDMPzP)—with five heavy ...
Rimadani Pratiwi +2 more
doaj +1 more source
Química Nova, 2002 The chemical durability of the Li2O-ZrO2-BaO-SiO2 system was examined by determination of the Vickers hardness. The dependence of hardness and of the chemical resistance with BaO addition was investigated.
Silvia Denofre de Campos +3 more
doaj +1 more source
Chemical potential of a test hard sphere of variable size in a hard-sphere fluid [PDF]
The Journal of Chemical Physics, 2016 The Labík and Smith Monte Carlo simulation technique to implement the Widom particle insertion method is applied using Molecular Dynamics (MD) instead to calculate numerically the insertion probability, P0(η,σ0), of tracer hard-sphere (HS) particles of different diameters, σ0, in a host HS fluid of diameter σ and packing fraction, η, up to 0.5.
David M. Heyes, Andrés Santos
openaire +3 more sources
Relations between potential energy, electronic chemical potential, and hardness profiles [PDF]
, 1997 In recent papers we defined a theoretical frame aimed at characterizing the hardness and potential energy profiles along a reduced reaction coordinate (omega) varying from 0 to 1.
Melin, Junia +8 more
core +1 more source
Failure Analysis of Brake Panel on Automotive Braking System [PDF]
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering), 2019 This paper presents the results of a failure analysis investigation conducted in the braking component of motorcycle. One of the components is the brake panel. This component has been replaced in the non-authorized dealer. After used within 3 months, the
Munaji, Yoyok Winardi
doaj +1 more source
Computer quantum-chemical simulation of the interaction of calcium carbonate with biopolymers
Современная наука и инновацииAs part of this work, computer quantum chemical modeling of the interaction of calcium carbonate with biopolymers (chitosan, hydroxyethylcellulose, hyaluronic acid) was carried out.
M. A. Pirogov +6 more
doaj +1 more source
Tetris with Few Piece Types [PDF]
We prove NP-hardness and #P-hardness of Tetris clearing (clearing an initial board using a given sequence of pieces) with the Super Rotation System (SRS), even when the pieces are limited to any two of the seven Tetris piece types.
Li, Jeffery +3 more
core +1 more source
Liver organoids: modelling complexity in homeostasis and disease
FEBS Letters, EarlyView.Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley +1 more source
DNA ligase LigE increases bacterial transformation with damaged extracellular DNA
FEBS Letters, EarlyView.The DNA ligase LigE from the naturally competent Gram‐negative bacterium Neisseria gonorrhoaea increases transformation with cut extracellular DNA. This process is ATP‐dependent and relies on the catalytic activity of LigE; it also requires that LigE contains an intact periplasmic localisation sequence, indicating that ligE functions in the periplasm ...
Jolyn Pan +4 more
wiley +1 more source