Results 111 to 120 of about 60,015 (288)

Archaeological Heritage in the Historic Centre of Riga: Status, Management, Development

open access: yesInternet Archaeology
The origins of the city of Riga can be traced back to a small area on the right bank of the River Daugava in the 11th–12th centuries. Over the ensuing centuries the city developed, and suburbs began to form outside its fortifications.
Sandra Zirne, Egita Lūsēna
doaj   +1 more source

Food fortification [PDF]

open access: yesProceedings of the Nutrition Society, 1990
openaire   +2 more sources

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

open access: yesDeep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu   +6 more
wiley   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang   +6 more
wiley   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Electronic Synergy in NiCo‐Embedded Nitrogen‐Doped Hollow Mesoporous Carbon Spheres for Bifunctional Oxygen Catalysis and Zinc–Air Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study employs a hard‐templating etching strategy to synthesize N‐doped hollow mesoporous carbon spheres embedded with NiCo nanoparticles (denoted as NiCo@N‐HMCS). The optimized catalyst exhibits exceptional bifunctional catalytic activity for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in alkaline media, achieving a ...
Pengyu Tan   +6 more
wiley   +1 more source

Prisión y muerte de Alfonso de Guzmán, señor de Lepe y Ayamonte: un crimen infame, una fortaleza marcada y un ciclo inédito de poesía tradicional

open access: yesE-Spania
Cet article analyse l'emprisonnement et la mort de Alfonso de Guzmán, seigneur de Lepe, Ayamonte et La Redondela (Huelva), aux mains de son neveu Juan de Guzmán, comte de Niebla et, plus tard, premier duc de Medina Sidonia.
Juan Luis Carriazo Rubio
doaj   +1 more source

Food fortification

open access: yesCeylon Medical Journal, 2011
C, Liyanage, M, Hettiarachchi
openaire   +3 more sources

Role of selenium in the pathophysiology of cardiorenal anaemia syndrome

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 770-780, April 2025.
Abstract Chronic kidney disease (CKD) and cardiovascular disease (CVD) have multiple bidirectional mechanisms, and anaemia is one of the critical factors that are associated with the progression of the two disorders [referred to as cardiorenal anaemia syndrome (CRAS)].
Shigeyuki Arai   +2 more
wiley   +1 more source

Beauty and lack thereof in seventeenth- and eighteenth-century travelogues [PDF]

open access: yes, 2013
In the seventeenth and eighteenth centuries, Malta attracted several travellers, eager to discover this small State in the Mediterranean. In spite of the harsh travelling conditions, the traveller did not lose heart and bravely undertook the discovery
Micallef, Patricia
core  

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