نتایج جستجو برای: indicator chemical

تعداد نتایج: 450704  

Journal: :JASIST 2014
Dalibor Fiala

An index is proposed that is based on the h-index and a 3-year publication/citation window. When updated regularly, it shows the current scientific performance of researchers rather than their life-time achievement as indicated by common scientometric indicators. In this respect, the new rating scheme resembles established sports ratings such as in chess or tennis. By the example of ACM SIGMOD ...

2013
Irfan Aziz Tariq Mahmood K. Rafiq Islam

Management systems influence soil quality over time. A randomized block design in 2 (tillage system) 3 (crop rotation) factorial arrangement was laid-out to evaluate the impact of tillage and crop rotation (2002–2007) on soil quality. Conventional tillage and No-till were factored into continuous corn, corn–soybean, and corn–soybean–wheat–Cowpea systems. Ten soil cores were collected at 0–7.5, ...

2002
V. V. S. S. Sarma Tsuneo Ono Toshiro Saino

[1] Aragonite saturation horizon (ASH) shallowed significantly by 25 to 155 m and 16 to 124 m in the Pacific and Indian Ocean respectively in two decades. Apparent oxygen utilization (AOU) increased by 3 to 34 and 0.5 to 31.5 mmol kg 1 in the Pacific and Indian Ocean respectively at the depth of ASH during this period. DIC increased by 12.5 to 36.8 and 5.5 to 32 mmol kg 1 in the vicinity of ASH...

2004
M D Smooke R J Hall M B Colket J Fielding M B Long C S McEnally L D Pfefferle

Laminar, sooting, ethylene-fuelled, co-flow diffusion flames at atmospheric pressure have been studied experimentally and theoretically as a function of fuel dilution by inert nitrogen. The flames have been investigated experimentally using a combination of laser diagnostics and thermocouple-gas sampling probe measurements. Numerical simulations have been based on a fully coupled solution of th...

2011
A. Abril L. Martinez

We evaluated the abundance of microbial functional groups involved in compost fertility, and the chemical parameters of maturity and quality most commonly analyzed in compost products. We employed compost produced using the same hydrolytic stage and two maturation processes (with and without earthworms) and with different organic wastes. Our aim was to propose a valid tool for measuring the qua...

Journal: :The EMBO journal 2005
Massimo A Hilliard Alfonso J Apicella Rex Kerr Hiroshi Suzuki Paolo Bazzicalupo William R Schafer

ASH sensory neurons are required in Caenorhabditis elegans for a wide range of avoidance behaviors in response to chemical repellents, high osmotic solutions and nose touch. The ASH neurons are therefore hypothesized to be polymodal nociceptive neurons. To understand the nature of polymodal sensory response and adaptation at the cellular level, we expressed the calcium indicator protein cameleo...

Journal: :Trends in ecology & evolution 1998
D Penn W K Potts

Research into visual and acoustic signals has demonstrated that exaggerated sexual displays often provide an honest indicator of a male's resistance to parasites. Recent studies with rodents and humans now suggest that chemosensory signals also reveal a male's disease resistance and his genetic compatibility. Our understanding of sexual selection has been greatly enriched by considering the mec...

2013
Mi Jung Kim Jinyoung Hur In-Hye Ham Hye Jin Yang Younghoon Kim Seungjoon Park Young-Wuk Cho

Astrocytes are reported to have critical functions in ischemic brain injury including protective effects against ischemia-induced neuronal dysfunction. Na-K ATPase maintains ionic gradients in astrocytes and is suggested as an indicator of ischemic injury in glial cells. Here, we examined the role of the Na-K ATPase in the pathologic process of ischemic injury of primary cultured astrocytes. Ch...

Journal: :ACS chemical neuroscience 2013
Dalibor Sames Matthew Dunn Richard J Karpowicz David Sulzer

To advance understanding of the brain, the ability to measure both nerve cell electrical spiking and chemical neurotransmission with high spatial resolution is required. In comparison to the development of voltage sensors and Ca(2+) indicator dyes over the past several decades, high resolution imaging of neurotransmitter (NT) release at single synapses has not been possible. In this Viewpoint, ...

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