Results 31 to 40 of about 262,927 (240)

Methane Activation by B5+ Toward a CB5H2+ Isomer Containing a Planar Tetracoordinate Carbon Atom

open access: yesAngewandte Chemie, EarlyView.
Methane activation by B5+ yields CB5H2+ through H2 elimination. Electronic‐structure calculations connect the nascent dehydrogenation product to a low‐lying isomer containing a planar tetracoordinate carbon atom. ABSTRACT Planar tetracoordinate carbon (ptC) motifs have been identified predominantly in the global‐minimum structures of gas‐phase clusters
Qin‐Wei Zhang   +11 more
wiley   +2 more sources

The May 1968 Archives: A Presentation of the Anti-Technocratic Struggle in May 1968

open access: yesPhaenEx, 2009
This essay argues that the events of May ’68 were not without substantial political content. Drawing on the May Events Archives at SFU, the author argues that the protests were not a vastly overblown student plank, but represented an important attempt to establish a politics of civilizational identity and to answer the questions: what kind of people ...
openaire   +2 more sources

Value of Information of Improved Traceability in Fresh Produce Markets

open access: yesAgribusiness, EarlyView.
ABSTRACT Traceability plays an important role in promoting a safe food supply by fostering transparent information exchange along the food supply chain. New technological innovations have the potential to improve traceability outcomes, as greater transparency along the food supply chain can aid in pinpointing precise origins of the contamination ...
Kelsey Vourazeris   +2 more
wiley   +1 more source

Borosulfates Hosting Se42+ Ions—Crystal Structures, Chemical Bonding, Optical Spectroscopy, and Magnetism

open access: yesAngewandte Chemie, EarlyView.
Apart from (transition) metal (oxo)halides only few hosts stabilize chalcogenide cations in purely oxoanionic coordination environment. Herein, we report on five borosulfates containing the Se42+ ion and characterize the compounds using X‐ray diffraction, diffuse reflectance spectroscopy, density functional theory (DFT) calculations along with magnetic
Erich Turgunbajew   +11 more
wiley   +2 more sources

MILITARY RECORD PRESERVATION IN SOUTH AFRICA, 1914-1992 A HISTORY OF DIRECTORATE DOCUMENTATION SERVICE

open access: yesScientia Militaria, 2012
Directorate Documentation Service has one of the largest archives depots in South Africa. The origins of the organisation can be traced back to the First World War, although legal status was only accorded twenty five years ago (14 May 1968).
Ian Van der Waag
doaj   +1 more source

How Crop Forecast Similarity, Government Policies, and Macroeconomic Conditions Affect WASDE Forecast Accuracy

open access: yesAgribusiness, EarlyView.
ABSTRACT The U.S. Department of Agriculture's (USDA) World Agricultural Supply and Demand Estimates (WASDE) play a central role in how agricultural commodity markets process information about supply, demand, and prices. This study examines how global and domestic shocks, as well as policy interventions, are reflected in the similarity of WASDE ...
Zhining Sun   +2 more
wiley   +1 more source

Heranças de 68: cinema e sexualidade Heritage from 68: cinema and sexuality

open access: yesTempo Social, 1998
Maio de 68 deixou marcas e referências nos mais insuspeitos campos de atividade e de conhecimento humano. Neste texto, buscamos explorar as relações que podem ser estabelecidas entre algumas de suas formulações - em especial as ligadas a um ideário de ...
Paulo Menezes
doaj   +1 more source

Attempt to save Friendship, or What the Liberator of Prague Did in Czechoslovakia in May 1968

open access: yesVestnik MGIMO-Universiteta, 2020
The article introduces the publication of the recently declassified archival documents of the Russian State Archive of Contemporary History (RGANI) and the Archive of Foreign Policy of the Russian Federation concerning the stay of a delegation of Soviet ...
I. A. Permyakov, S. G. Antonenko
doaj   +1 more source

Drought Exposure and Dynamic Input Adjustment in North Central U.S. Agriculture

open access: yesAgribusiness, EarlyView.
ABSTRACT This article examines whether realized extreme drought episodes affect the speed of adjustment of derived input demands and output supplies toward their long‐run equilibrium in U.S. agriculture, focusing on states in the North Central Region.
Victor H. Lana Pinto   +2 more
wiley   +1 more source

Claiming Democracy: The Paris 1968 May Revolts in the Mass Media and Their European Dimensions

open access: yesCuadernos de Historia Contemporánea, 2009
The paper explores the existence of a European public sphere drawing upon the example of the Paris 1968 May revolts. Its addresses questions as: How European was 1968 when it happened? And what does European refer to?
Hagen Schulz-forberg
doaj   +1 more source

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