Results 31 to 40 of about 3,617,486 (301)

Elemental and isotopic analysis of leaves predicts nitrogen-fixing phenotypes

open access: yesScientific Reports
Nitrogen (N)-fixing symbiosis is critical to terrestrial ecosystems, yet possession of this trait is known for few plant species. Broader presence of the symbiosis is often indirectly determined by phylogenetic relatedness to taxa investigated via ...
Joshua R. Doby   +6 more
doaj   +1 more source

Bivalvia biostratigraphy of Aksütlü region (Hekimhan, NW Malatya, Türkiye) and paleoclimatological interpretations

open access: yesBulletin of the Mineral Research and Exploration
In this study, Early Miocene bivalve fauna obtained from Hekimhan Aksütlü locality is presented. Abundant and well-preserved ostreid samples are interesting in the area where molluscs have notbeen studied before.
Müjde Gürsoy
doaj   +1 more source

Biographical Sketch of Spencer Fullerton Baird [PDF]

open access: yes, 1996
Spencer Fullerton Baird was born in Reading, Pennsylvania, February 3, 1823. In 1834 he was sent to a Quaker boarding-school kept by Dr. McGraw, at Port Deposit, Maryland, and the year following to the Reading Grammar School. In 1836 he entered Dickinson
Goode, George Brown
core  

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Approaches to estimating the universe of natural history collections data [PDF]

open access: yes, 2010
This contribution explores the problem of recognizing and measuring the universe of specimen-level data existing in Natural History Collections around the world, in absence of a complete, world-wide census or register. Estimates of size seem necessary to
Ariño, Arturo H.
core   +4 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Earth History and the Evolution of Caribbean Bats [PDF]

open access: yes, 2009
Although the natural history of the Caribbean is better understood now than ever before, a general biogeographic explanation for the peculiar faunal composition of the islands remains elusive.
Liliana Dá
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Natural History: the sense of wonder, creativity and progress in ecology

open access: yesScientia Marina, 2001
This essay addresses the question of blending natural history and ecological wisdom into the genuine creativity exemplified by Prof. Ramon Margalef. Many have observed that modern biology is a triumph of precision over accuracy, and that ecology has ...
Paul K. Dayton, Enric Sala
doaj   +1 more source

Natural History of Congenital Generalized Lipodystrophy: A Nationwide Study From Turkey

open access: yesThe Journal of Clinical Endocrinology & Metabolism, 2016
Context: Congenital generalized lipodystrophy (CGL) is a rare autosomal recessive disorder characterized by near-total lack of body fat. Objective: We aimed to study natural history and disease burden of various subtypes of CGL.
TUYSUZ, B   +26 more
openaire   +6 more sources

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