[1] We present a tree-ring based reconstruction of the Atlantic Multidecadal Oscillation (AMO) which demonstrates that strong, low-frequency (60–100 yr) variability in basin-wide (0–70 N) sea surface temperatures (SSTs) has been a consistent feature of North Atlantic climate for the past five centuries. Intervention analysis of reconstructed AMO indicates that 20th century modes were similar to...

The species-specific chemical messenger, antheridiogen A(Ce), mediates the differentiation of male gametophytes in the fern Ceratopteris. In order to investigate the biochemical origin of antheridiogen, the effect of the inhibitors, 2'-isopropyl-4'-(trimethylammoniumchloride)-5' -methylphenylpiperidine-1-carboxylate (AMO-1618), 2-chloroethyl trimethylammonium chloride (CCC), and alpha-cycloprop...

Résumé. Dans cet article nous proposons une approche de la gestion des droits d’accès pour les systèmes de gestion de contenu qui reposent sur les modèles et techniques du web sémantique. Nous présentons l’ontologie AMO qui consiste (1) en un ensemble de classes et propriétés permettant d’annoter les ressources dont il s’agit de contrôler l’accès et (2) en une base de règles d’inférence modélis...

Nitrifying bacteria such as Nitrosomonas europaea and Nitrosospira sp. NpAV use ammonia monooxygenase (AMO) for oxidation of their primary growth substrate, ammonia. Two polypeptides of AMO are coded for by contiguous genes, amoA and amoB, which are preceded by a third gene, amoC. The amoCAB clusters are present in multiple copies in nitrifying bacteria of the beta subdivision. These bacteria a...

Decadal variations in summer drought events during 1956–2005 are examined over Eastern China to identify their leading variability modes and their linkages to the Pacific Decadal Oscillation (PDO), Atlantic Multi-decadal Oscillation (AMO), and global warming. The PDO influence is found to dominate China drought frequency from the 1960s to early 1990s via modulating the Western Pacific Subtropic...

More than half (52%) of the spatial and temporal variance in multidecadal drought frequency over the conterminous United States is attributable to the Pacific Decadal Oscillation (PDO) and the Atlantic Multidecadal Oscillation (AMO). An additional 22% of the variance in drought frequency is related to a complex spatial pattern of positive and negative trends in drought occurrence possibly relat...

In (B), the N. europaea amo subunits were mislabeled and misplaced. Their orientation should be reversed such that the amoC subunit appears in opposite orientation to the far left, followed by the A subunit and then the B subunit. This results in the inversion of the shaded boxes connecting the N. europaea and C. symbiosum amo subunits with respect to the original image. The color coding of the...

Several studies examine cycle periods and the interactions between three major climate modes over North Atlantic, namely Atlantic meridional overturning circulation (AMOC), multidecadal oscillation (AMO), (NAO). Here, we use a relatively novel high-resolution Lead–lag (LL) method to identify short time windows with persistent LL relations in series during period from 1947 2020. We find that the...

MiR-21 is an oncogenic miR frequently elevated in gastric cancer. Overexpression of miR-21 decreases the sensitivity of gastric cancer cells to trastuzumab, which is a humanized monoclonal antibody targeting human epidermal growth factor receptor 2. However, optimization of miRNA or its anti-miRNA oligonucleotides (AMOs) for delivery is a challenge. Receptor-mediated endocytosis plays a crucial...

[1] Climate variability is now known to play a key role in the abundance of marine fisheries, and must be accounted for to implement sustainable management strategies. We show that North American Atlantic salmon abundance has fluctuated in parallel with the Atlantic Multidecadal Oscillation (AMO); a basin-wide, low frequency climate mode producing cold-warm-cold sea surface temperatures over th...