Results 1 to 10 of about 293,760 (207)
Evaluation of 25-year-old afforestation's of loblolly pine, black alder, velvet maple and chestnut leaved oak in Radar Poshteh area of Guilan province [PDF]
Afforestation is one of the most important tools in creating green cover and providing wood supply. The aim of current study was to investigate the growth and performance of 25-year-old afforestation's in the Radar-Poshteh region of Guilan province. In
A. Ebrahimi Ashbella +3 more
doaj +1 more source
An on‐surface Diels–Alder reaction [PDF]
AbstractThe Diels–Alder reaction is one of the most popular reactions in organic chemistry. However, its use in the field of on‐surface synthesis is hampered by the spatial restrictions of this cycloaddition reaction. Herein we selected a cyclic strained triyne to demonstrate an on‐surface hexadehydro‐Diels–Alder reaction in a single molecule.
Jesús Castro‐Esteban +5 more
openaire +4 more sources
Objective: The COVID-19 pandemic has led to significant service loss across the NHS, and ophthalmology is one of the greatest affected specialties. We attempt to quantify the impact of the first peak of the COVID-19 pandemic on a paediatric ophthalmology
Megan Wood +4 more
doaj +1 more source
Background Paediatric early warning systems (PEWS) alert health professionals to signs of a child’s deterioration with the intention of triggering an urgent review and escalating care. They can reduce unplanned critical care transfer, cardiac arrest, and
Bernie Carter +15 more
doaj +1 more source
Best management practices are often written by researchers to guide land managers and landowners in the creation of habitat for wildlife species of interest.
Anna Buckardt Thomas +4 more
doaj +1 more source
ANTIMICROBIAL ACTIVITY OF THE SUBSTANCES RECEIVED FROM RAW MATERIALS OF BIRCH FAMILY PLANTS [PDF]
Introduction. In accordance with the last events in Ukraine (considering military operations in anti-terrorist operation in the Luhansk and Donetsk regions) the domestic medicine is in great need in preparations with antimicrobial activity. Our attention
Fedchenkova Yu.A, Savinova EM
doaj +1 more source
Implications for pathology practice In recent years, the general public's confidence in the medical profession has been damaged by several serious incidents and the media fuelled storms that have followed. Notable among these are the murders committed by the general practitioner Harold Shipman, the inquiry into cervical screening at Kent and ...
J L, Burton, M, Wells
openaire +2 more sources
Unusual structure-energy correlations in intramolecular Diels–Alder reaction transition states [PDF]
Detailed analysis of calculated data from an experimental/computational study of intramolecular furan Diels–Alder reactions has led to the unusual discovery that the mean contraction of the newly forming C-C σ-bonds from the transition state to the ...
Bebbington, Magnus +3 more
core +2 more sources
The [4+2]‐Cycloaddition of α‐Nitrosoalkenes with Thiochalcones as a Prototype of Periselective Hetero‐Diels–Alder Reactions—Experimental and Computational Studies [PDF]
The [4+2]‐cycloadditions of α‐nitrosoalkenes with thiochalcones occur with high selectivity at the thioketone moiety of the dienophile providing styryl‐substituted 4H‐1,5,2‐oxathiazines in moderate to good yields.
Boger D. L. +8 more
core +1 more source
Den tredje alder
I dag regnes uttrykket «den tredje alder» gjerne som ensbetydende med pensjonisttilværelsen, selv om forestillingen om at menneskelivet kan deles inn i tre aldre er svært mye eldre enn pensjonsinstituttet.
Jon Schackt
doaj +1 more source

