Results 21 to 30 of about 925 (172)

Computational analysis of a neutron trap in the center of the WWR-K reactor core for irradiation tests of large-sized objects

open access: yesEurasian Journal of Physics and Functional Materials, 2022
Nowadays, the WWR-K research reactor is operated with low-enriched uranium fuel and a beryllium neutron reflector. Irradiation positions located in the core make it possible to irradiate objects no larger than 50 mm in size.
A. A. Shaimerdenov   +7 more
doaj   +1 more source

Numerical Study of the Effect of Thermal Insulation and Window-to-wall Ratio on Reducing the Thermal Loads of the Residential Sector in Iraq [PDF]

open access: yesEngineering and Technology Journal
The climate change that the world is witnessing has cast a greater shadow on the Middle East. Iraq, one of the region's countries, is experiencing harsh thermal conditions.
Abd Hussein, Ahmed saleh, Hamdi Ahmed
doaj   +1 more source

A Fundamental Study on the Development of New Energy Performance Index in Office Buildings

open access: yesEnergies, 2021
Recently, there have been significant concerns regarding excessive energy use in office buildings with a large window-to-wall ratio (WWR) because of the curtain wall structure.
Jin-Hee Kim   +5 more
doaj   +1 more source

Reactivity margin evaluation software for WWR-c reactor [PDF]

open access: yesNuclear Energy and Technology, 2018
The WWR-c reactor reactivity margin can be calculated using a precision reactor model. The precision model based on the Monte Carlo method (Kolesov et al. 2011) is not well suited for operational calculations. The article describes the work on creating a software package for preliminary evaluations of the WWR-c reactor reactivity margin.
Belyavtsev,Ivan, Starkov,Sergey
openaire   +2 more sources

Preliminary safety analysis at the decommissioning of the WWR-M research reactor

open access: yesNuclear Physics and Atomic Energy, 2022
Following the demands established by the current Ukrainian legislation, the Decommissioning Concept for the WWR-M research reactor was recently approved. The Concept envisages a strategy of immediate dismantling; it identifies and justifies the main technical and organizational measures for the preparation and implementation of decommissioning, the ...
Yu. M. Lobach   +2 more
openaire   +1 more source

Wildlife Warning Reflectors' Potential to Mitigate Wildlife-Vehicle Collisions—A Review on the Evaluation Methods

open access: yesFrontiers in Ecology and Evolution, 2018
Wildlife-vehicle collisions (WVC) produce considerable costs in road traffic due to human fatalities as well as ecological and economic losses. Multiple mitigation measures have been developed over the past decades to separate traffic and wildlife, to ...
Anke Benten   +2 more
doaj   +1 more source

نقش طراحی و موقعیت قرارگیری ساختمان در بهینه سازی مصرف انرژی (نمونه موردی : ساختمانهای مهندسی ساز شهر تهران) [PDF]

open access: yesهنر اسلامی, 2023
ساختمان‌ها یکی از ارکان اصلی توسعۀ اجتماعی و اقتصادی کشورها می‌باشند که بخش زیادی از انرژی و منابع طبیعی را مصرف می‌کنند. سهم این بخش از مصرف انرژی، به‌طور میانگین، 30-50% می‌باشد. در ایران بر پایۀ ترازنامه انرژی سال‌های اخیر، حدود 33% از انرژی تولید شده
میثم ذکاوت   +2 more
doaj   +1 more source

Impact of Window-to-Wall Ratio on Heating Demand and Thermal Comfort When Considering a Variety of Occupant Behavior Profiles

open access: yesFrontiers in Sustainable Cities, 2021
Energy consumption and thermal comfort in residential buildings are highly influenced by occupant behavior, which exhibits a high level of day-to-day and dwelling-to-dwelling variance.
Debby Veillette   +2 more
doaj   +1 more source

Status of UCN Source at WWR-M Reactor

open access: yesKnE Energy, 2018
The WWR-M reactor at PNPI is going to be equipped with an ultacold neutron source of high density. Method of UCN production is based on their accumulation in the super fluid helium due to particular qualities of that quantum liquid. The possibility of maintaining the temperature T = 1.371K with a thermal load of P = 60W was shown experimentally, while ...
A P Serebrov   +8 more
openaire   +2 more sources

Rescued back from extinction in the wild: past, present and future of the genetics of the Arabian oryx in Oman

open access: yesRoyal Society Open Science, 2022
The Arabian oryx was the first species to be rescued from extinction in the wild by the concerted efforts of captive programmes in zoos and private collections around the world.
Qais Al Rawahi   +8 more
doaj   +1 more source

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