Results 101 to 110 of about 465,615 (309)

Исследование влияния токов утечки и блуждающих токов на здания и сооружения, расположенные возле электрифицированных железнодоржных путей [PDF]

open access: yes, 2009
Досліджений вплив струмів витоку і блукаючих струмів від рейок на конструкції будівель і споруд залізниць, електрифікованих постійним струмом – мости, водопропускні труби, станційні будівлі, пасажирські платформи і так далі Експериментально встановлені
Борзяк, О. С.   +5 more
core  

Atomically Revealing Bulk Point Defect Dynamics in Hydrogen‐Driven γ‐Fe2O3 → Fe3O4 → FeO Transformation

open access: yesAdvanced Functional Materials, EarlyView.
In situ TEM uncovers the atomic‐scale mechanisms underlying hydrogen‐driven γ‐Fe2O3→Fe3O4→FeO reduction. In γ‐Fe2O3, oxygen vacancies cluster around intrinsic Fe vacancies, leading to nanopore formation, whereas in Fe3O4, vacancy aggregation is suppressed, preserving a dense structure.
Yupeng Wu   +14 more
wiley   +1 more source

An overview of various methods of improving masonry buildings made with stone and lime [PDF]

open access: yesمهندسی و مدیریت ساخت
Masonry buildings constructed with stone and lime have historically served as vital components of architectural heritage across diverse cultures and regions.
Parvin Montazeri
doaj  

Features of waterproofing of agricultural buildings and structures

open access: yesНауковий вісник Львівського національного університету ветеринарної медицини та біотехнологій імені С.З. Гжицького. Серія: Сільськогосподарські науки, 2019
High groundwater levels, defects and imperfect drainage systems contribute to the active dampening of stone structures, resulting in their corrosion destruction and accelerated load loss. There are two main sources of capillary pull-up: groundwater level
R. M. Myniv
doaj   +1 more source

Building Stone Treasure Troves [PDF]

open access: yesEvolution: Education and Outreach, 2008
Cities large and small have a treasure trove of building stones both local as well as imported from various regions of the country as well as foreign sources. Many of them contain fossils which are easily available for teachers to utilize for class field trips. For some areas guidebooks exist which are listed in the attached appendix.
openaire   +1 more source

Bridge over Maritsa river [PDF]

open access: yes
Panorama photograph of a stone bridge with a board parapet with two men on it.

core   +1 more source

Working With Clay

open access: yes, 2014
Evidence from sites in the lower Ulua valley of north-central Honduras, occupied between a.d. 500 and 1000, provides new insight into the connections between households, craft production, and the role of objects in maintaining social relations within and
Hendon, Julia A.   +2 more
core   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel   +4 more
wiley   +1 more source

OCTOID: A Soft Robotic System Featuring Programmable Shape Morphing and Dynamic Structural Coloration

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by octopuses, actuating legs based on soft materials are fabricated with programmed chiroptical properties and mechanical behaviors to achieve dynamic color modulation and reversible shape morphing, and these legs are developed into a modular OCTOID system.
Seung Hui Han   +8 more
wiley   +1 more source

Bowing and expansion of natural stone panels: marble and limestone testing and assessment

open access: yesMateriales de Construccion, 2008
Natural stone has been used as a building material for centuries. In the past, load bearing members were made of entirely of stone, but in the last 50 years new processing techniques have made the production and use of thin facade cladding a profitable ...
Katarina Malaga   +2 more
doaj   +1 more source

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