Results 111 to 120 of about 894,865 (310)

Selection and Firm Survival: Evidence from the Shipbuilding Industry, 1825-1914 [PDF]

open access: yes
Several theories of firm performance can explain the well-known observation that survival is positively related to age. However, a more mundane explanation – selection bias driven by variations in firm quality – may also underlie the phenomenon.
Peter Thompson
core  

Early Iron Age metal circulation in the Arabian Peninsula: the oasis of Tayma as part of a dynamic network [PDF]

open access: yes, 2016
The oasis of TaymāΜ, located in north-western Arabia, between the Дijāz mountains and the great Nafūd desert, was strategically situated on one of the branches of the main trade routes that connected southern Arabia and the Mediterranean Sea during the ...
Hausleiter, A   +3 more
core  

Evaluation of the Dual Impact of Nanotechnologies on Health and Environment Through Alternative Bridging Models

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores how alternative invertebrate and small‐vertebrate models advance the evaluation of nanomaterials across medicine and environmental science. By bridging cellular and organismal levels, these models enable integrated assessment of toxicity, biodistribution, and therapeutic performance.
Marie Celine Lefevre   +3 more
wiley   +1 more source

Traces of Late Bronze and Early Iron Age Mongolian Horse Mitochondrial Lineages in Modern Populations. [PDF]

open access: yesGenes (Basel), 2021
Kusliy MA   +7 more
europepmc   +1 more source

Effect of food and micronutrient supplementation during pregnancy on subsequent development of infants in Bangladesh: a randomized trial [PDF]

open access: yes, 2006
Background: The prevalence of low birth weight (LBW) is high in developing countries and is estimated to be 30% (UNICEF, 2001) in Bangladesh. Maternal under nutrition is an important cause of LBW is also highly prevalent in Bangladesh 50 % (March of ...
Tofail, F
core  

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

Comments on dating and the periodization of the use of the burial ground in Domasław-Chrzanów, Wrocław district

open access: yesPrzegląd Archeologiczny, 2019
The paper contains the comments of an archaeologist on the results of dating the Bronze and early Iron Age burial ground in Domasław, Wrocław district by the 14C method. Most of the dates obtained correlate well with previous archaeological dating to the
Bogusław Gediga
doaj  

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

open access: yesAdvanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa   +3 more
wiley   +1 more source

A Late Bronze Age ring-forst at Bayvil Farm, Pembrokeshire [PDF]

open access: yes, 2018
A 70m-diameter circular ditched enclosure identified as a cropmark in 1996 at Bayvil Farm, Eglwyswrw, north Pembrokeshire, was initially thought to be a segmented-ditched enclosure, an early type of Neolithic henge.
Casswell, C.   +2 more
core  

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