Results 11 to 20 of about 182,030 (268)

The stress - energy operator [PDF]

open access: yesClassical and Quantum Gravity, 1996
Exposition improved. To appear in Letters to Classical and Quantum Gravity.
openaire   +3 more sources

Integrating Life Cycle Energy into the Design of Façade Refurbishment for a Post-War Residential Building in The Netherlands

open access: yesBuildings, 2015
The existing building stock has been in the focus of European Union policies for energy savings. Nevertheless, energy certification schemes refer mostly to operational energy and usually do not consider aspects related to the life cycle of the building ...
Paressa Loussos   +3 more
doaj   +1 more source

`Operational' energy conditions [PDF]

open access: yesClassical and Quantum Gravity, 1998
I show that a quantized Klein-Gordon field in Minkowski space obeys an `operational' weak energy condition: the energy of an isolated device constructed to measure or trap the energy in a region, plus the energy it measures or traps, cannot be negative.
openaire   +2 more sources

Optimal Operation of a Residential Energy Hub [PDF]

open access: yes2018 7th International Conference on Systems and Control (ICSC), 2018
Trabajo presentado en la 7th International Conference on Systems and Control (ICSC), celebrada en Valencia del 24 al 26 de octubre de ...
Rasouli Dogaheh, Zahra   +1 more
openaire   +2 more sources

Empirical Operational Energy Analysis of Downtown High-Rise vs. Suburban Low-Rise Lifestyles: A Chicago Case Study

open access: yesEnergies, 2016
It is widely accepted that the concentration of people living in high-density city centers offers greater operational energy efficiency and lower greenhouse gas emissions than lower-density expanded suburbs.
Peng Du, Antony Wood, Brent Stephens
doaj   +1 more source

Moringa oleifera-mediated iron oxide nanoparticles, characterization and their anti-proliferative potential on MDA-MB 231 human breast cancer cells

open access: yesPakistan Journal of Pharmaceutical Sciences, 2023
Iron oxide nanoparticles (Fe2O3 NPs) stabilized with Moringa oleifera (M.O.) were successfully synthesized. The study aimed to explore the cytotoxic, anti-proliferative and anti-microbial potential of Fe2O3 NPs through various assays, including trypan ...
Huzaifa Umar, Maryam Rabiu Aliyu
doaj   +1 more source

The universal ‘energy’ operator [PDF]

open access: yesClassical and Quantum Gravity, 2006
The "positive square" of any tensor is presented in a universal and unified manner, valid in Lorentzian manifolds of arbitrary dimension, and independently of any (anti)-symmetry properties of the tensor. For rank-m tensors, the positive square has rank 2m. Positive here means future, that is to say, satisfying the dominant property.
openaire   +2 more sources

Research and application of wet bulb globe temperature index in monitoring meteorological factors in high-temperature environment

open access: yes环境与职业医学, 2023
In recent years, global warming has led to frequent high temperature weather, and occupational groups who have been exposed to high-temperature environment for a long time are vulnerable to heat casualties due to the combined impact from multiple ...
Hua YANG, Cheng WANG, Chao NIU
doaj   +1 more source

Integrated LCA and Energy Simulation for Envelope Decisions: Climate-Dependent Results [PDF]

open access: yesE3S Web of Conferences
This paper presents a whole-building life cycle assessment of Francis Hall, an academic building at Texas A&M University, to compare embodied and operational impacts under different climates and envelope design choices.
Aghdam Mana Nemati, Dixit Manish
doaj   +1 more source

Prediction of cell migration potential on human breast cancer cells treated with Albizia lebbeck ethanolic extract using extreme machine learning

open access: yesScientific Reports, 2023
Cancer is one of the major causes of death in the modern world, and the incidence varies considerably based on race, ethnicity, and region. Novel cancer treatments, such as surgery and immunotherapy, are ineffective and expensive.
Huzaifa Umar   +5 more
doaj   +1 more source

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