نتایج جستجو برای: fen

تعداد نتایج: 2518  

2015
Katharina Palmer Marcus A. Horn

Peatlands cover more than 30% of the Finnish land area and impact N2O fluxes. Denitrifiers release N2O as an intermediate or end product. In situ N2O emissions of a near pH neutral pristine fen soil in Finnish Lapland were marginal during gas chamber measurements. However, nitrate and ammonium fertilization significantly stimulated in situ N2O emissions. Stimulation with nitrate was stronger th...

Journal: :Stroke 1998
R Ramasubbu A Flint G Brown G Awad S Kennedy

BACKGROUND AND PURPOSE The purpose of this study was to use hormonal responsiveness to d-fenfluramine (d-FEN) challenge as a measure of central serotonin (5-HT) function in a comparative evaluation of serotonergic abnormalities between stroke patients and healthy elderly normal subjects to test the hypothesis that stroke may be associated with diminished serotonergic functioning. METHODS Eigh...

Journal: :Nanoscale 2018
Raheel Akram Muhammad Aizaz Ud Din Sami Ullah Dar Anila Arshad Wei Liu Zhanpeng Wu Dezhen Wu

A hierarchical excavated iron-nitrogen codoped mesoporous carbon (Ex-FeN-MC) electrocatalyst has been successfully synthesized by pyrolysis of the unique ureidopyrimidinone containing organic precursor MAMIS by using silica as the mesoporous template and iron nitrate as the source of iron. The selected organic precursor has multifunctionalities with diverse distribution of nitrogen and oxygen s...

2017
R. M. Patel D. D. Garg V. R. Patel S. G. Vahora A. P. Raval M. Choubey

An experiment was conducted to assess the effect of dietary supplementation of garlic (Allium sativum) and fenugreek (Trigonella foenum-graecum L.) seed powder as herbal feed additives on growth performance, carcass characteristics and economics of feeding in broilers. A total of 320 day old broiler chicks of Cobb-400 strain were divided into four treatment groups with 4 replicates of 20 chicks...

Journal: :Environmental microbiology 2003
Pierre E Galand Hannu Fritze Kim Yrjälä

Wetlands, including peatlands, are the main source of natural methane emission. Well-defined fen microsites have different methane emissions rates, but it is not known whether the methane-producing Archaea communities vary at these sites. Possible horizontal variations of communities, in a natural oligotrophic fen, were analysed by characterizing the methanogens from two well-defined microsites...

Journal: :Nucleic acids research 1998
J L Alleva P W Doetsch

FEN-1 proteins are a family of nucleases essential for lagging strand DNA synthesis. A gene with sequence similarity to FEN-1 protein-encoding genes, rad2 +, has been identified in Schizosaccharomyces pombe . We report the overexpression, purification, and character-ization of the putative S.pombe FEN-1 homolog, Rad2p. A GST-Rad2p fusion protein was over-expressed in Saccharomyces cerevisiae an...

Journal: :FEMS microbiology ecology 2014
Zuzana Urbanová Jiří Bárta

It is not well understood how the ecological status and microbial community composition of spruce swamp forests (SSF) relate to those found in bogs and fens. To clarify this, we investigated biogeochemical parameters and microbial community composition in a bog, a fen and two SSF using high throughput barcoded sequencing of the small ribosomal subunit (SSU) variable region V4. The results demon...

2017
Fabrizio Bigotti

This paper presents some of Santorio's marginalia to his Commentaria in primam fen primi libri Canonis Avicennae (Venice, 1625), which I identified in the Sloane Collection of the British Library in 2016, as well as the evidence for their authorship. The name of the Venetian physician Santorio Santori (1561-1636) is linked with the introduction of quantification in medicine and with the inventi...

2007
Yuji LIU

We prove existence results for the solutions of the periodic boundary value problem concerning the n-th order functional differential equation with impulses effects ⎩ ⎨ ⎧ Δ ∈ α α − , p , 1, = k)), t (x ,), t (x (I =) t (x ], T [0, t. e. a))), t ((x ,)) t ((x), t (x , t (f =) t (x k 1) n (k k , i k) i (m 1) n (L L L and the periodic boundary conditions 1. , 0, =), (= (0)) () (− n i T x x i i L O...

2002
Elzbieta Wasilewska-Dziubiñska Monika Borowiec Magdalena Chmielowska Ewa Woliñska-Witort Boguslawa Baranowska

OBJECTIVE: VIP and PACAP, two structurally related peptides, stimulate c AMP, steroidogenesis and progesterone (PROG) release from cultured rat granulosa cells. VIP and PACAP38 are known to mimic the effects of β-adrenergic receptor stimulation in the rat pinealocytes causing an increased melatonin synthesis. These effects were markedly potentiated by α1 adrenergic receptor stimulation. METHODS...

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