Results 31 to 40 of about 998,505 (83)

Macrozoobenthos With Chemical and Physics factor in the Babura rivers Deli Serdang

open access: yes, 2015
Research Title “Macrozoobenthos with physico-chemical factors on water and river Babura Deli Serdang”. The measured parameter is existence of macrozoobenthos That biotic factors and abiotic factors ie chemical and physical factors.
Masdiana Sinambela, M. Sipayung
semanticscholar   +1 more source

SENSITIVITY ANALYSES OF A MULTI-PHYSICS LONG-TERM CLOGGING MODEL FOR STEAM GENERATORS [PDF]

open access: yesInternational Journal for Uncertainty Quantification
Long-term operation of nuclear steam generators can result in the occurrence of clogging, a deposition phenomenon that may increase the risk of mechanical and vibration loadings on tube bundles and internal structures as well as potentially affecting ...
Edgar Jaber   +6 more
semanticscholar   +1 more source

Highlighting mathematical and physico-chemical concepts which can generate epistemological obstacles in biology courses: A case study of ecology

open access: yesSHS Web of Conferences
Many biology content areas require physics, mathematics and chemistry, for example ecology, genetics, biochemistry and many other biology subject areas need mathematical algorithms and statistics.
N. Zghida   +4 more
semanticscholar   +1 more source

Impossibility of a perpetuum mobile based on the nano-confinement effect on chemical equilibrium [PDF]

open access: yesarXiv, 2010
Impossibility of a perpetuum mobile based on the nano-confinement effect on chemical equilibrium is considered.
arxiv  

Phytoplankton Composition and Factors of Physics – Chemical Water Depth on Water Lake Tondano

open access: yes, 2016
Research on phytoplankton composition and physico-chemical factors of the Central part of Tondano waters was done by taking water samples from the depths of 5 M, 10 M and 20 M, respectively.
A. Wiyono   +2 more
semanticscholar   +1 more source

When a covalent bond is broken? [PDF]

open access: yesarXiv, 2011
The current contribution suggests the application of the effectively-unpaired-electron concept to describe stretching and breaking of chemical bonds quantitatively.
arxiv  

Characteristic time of crossing a long free energy barrier [PDF]

open access: yesarXiv, 2014
This short paper presents a simple approximate analytical estimate of the characteristic time of crossing a high, long and arbitrary bumpy free energy barrier in a course of chemical, biochemical or physical reaction.
arxiv  

Ionic Transport in Electrostatic Janus Membranes. An Explicit Solvent Molecular Dynamic Simulation. [PDF]

open access: yesACS Nano, 2022
Montes de Oca JM   +4 more
europepmc   +1 more source

Stacked Generalization Approach to Improve Prediction of Molecular Atomization Energies [PDF]

open access: yesarXiv, 2018
Machine learning holds the promise of learning the energy functional via examples, bypassing the need to solve complicated quantum-chemical equations and realizing efficient computing of molecular electronic properties.
arxiv  

Comments on Partition function of improved Tietz oscillators, C.S. Jia et all, Chemical Physics Letters 676, 2017, 150 [PDF]

open access: yesarXiv, 2019
The closed-form expression for the quantum partition function of the improved Tietz oscillator is obtained using the Voronoi summation formula.
arxiv  

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