Temporally control

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  • The mitogen activated protein (MAP) kinase module: (Raf fiMEKfiERKs) is central to the control of cell growth, cell differentiation and cell survival. The fidelity of signalling and the spatio-temporal activation are key deter-minants in generating precise biological responses. The fidelity is ensured by scaffold proteins – protein kinase insulators – andby specific docking sites. The duration and the intensity of the response are in part controlled by the compartmentalization of the signalling molecules. ...

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  • (BQ) Part 2 book "The management of quality and control" has contents: Experimental and robust design, strategie issues, producer-supplier relationships and the economies of quality, the control of quality in a temporal setting.

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  • Lichens are long-lived and can be monitored, field conditions permitting, in any season. Many lichens have extensive geographical ranges, allowing study of pollution gradients over large areas. These properties make them useful for spatial and temporal evaluation of pollutant accumulation in the environment. Epiphytic lichens (those that grow on trees or plants) are often best suited to the study of air pollution effects on lichen communities, lichen growth or physiology, and to the study of pollutant loading and distribution.

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  • The human body is composed of structures organized in a hierarchical fashion: from biomolecules assembled into polymers, to multimeric assemblies such as cellular organelles, to individual cells, to tissues, to organ systems working together in health and disease- each dominated by a characteristic length scale. Decades of science and engineering are now converging to provide tools that enable the orderly manipulation of biological systems at previously inaccessible, though critically important, length scales (...

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  • Accurate statistics on cancer occurrence and outcome are essential both for the purposes of research and for planning and evaluation programmes for cancer control (Parkin, 2006). Although tumours of thyroid account for only 1% of the overall human cancer burden, they represent the most common malignancies of the endocrine system and pose a significant challenge to pathologists, surgeons and endocrinologists. Among epithelial tumors, carcinomas of follicular cell origin far outnumber those of C-cell origin.

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  • The USFS Forest Inventory and Analysis (FIA) program seeks to assess the condition and trend of the forests of the U.S. FIA recently assumed responsibility for all former Forest Health Monitoring program (FHM) plot work on a national level, and is currently active in 32 states. Lichen community monitoring was included in FIA in order to address key assessment issues such as the impact of air pollution on forest resources, spatial and temporal trends in biodiversity, and the sustainability of timber harvesting.

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  • Experts agree that source control is the only completely effective way to remove pollutants from indoor environments. They also agree that total eradication of indoor air pollutants is often not feasible or practical. A more realistic goal is to use building materials, furnishings, finishes, office equipment, cleaning products and processes that emit low levels of VOCs.

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  • Critical loads, and other approaches that use models or empirical observations to link deposition with effects, provide tools that enable resource managers and policymakers to evaluate tradeoffs between the costs of more stringent emissions controls and the benefits of ecosystem services provided by healthy ecosystems. A critical loads approach can be used to synthesize scientific knowledge about air pollution thresholds that cause adverse impacts or ecosystem change.

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  • Self-sustained oscillations are perhaps the most studied objects in science. The accomplishment of such a task reliably and accurately requires the presence of specific control mechanisms to face the presence of variable and largely unpredictable environmental stimuli and noise.

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  • Multiprotein assemblies play major roles in most pathways involved in cell regulation and signaling. Weak binary interactions are transformed co-operatively into very specifi c systems, which achieve sensitivity, specifi city and temporal control. Due to the complexity and transience of these regulatory and signaling systems, a combination of in vivo, cell, biochemical, biophysical, and structural approaches is needed to investigate their structures and dynamics.

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  • Polymeric micelle, the self-assembly of block copolymers with core-shell architecture, is a promising nanocarrier for drug and gene delivery. There are several relevant properties in polymeric micelle as nanocarrier systems, such as longevity in blood circula-tion, tissue-penetrating ability, spatial and temporal controlled drug release, and reduced inherent toxicity of cytotoxic reagents.

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  • For much of history, few things have mattered more to humans than their relations with soil. This is evidenced by a rich historical literature on aspects of soil management and soil fertility, dating back to texts of ancient civilizations of the Middle East, the Mediterranean, China, and India (see McNeill and Winiwarter 2004).

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  • One of the key requirements of experimental control software is that it has good temporal precision. PsychoPy aims to be as precise as possible in this domain and does achieve excellent results where these are possible. To check the accuracy with which monitor frame times are recorded on your system run the timeByFrames demo from the Coder view.

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  • Following site characterization, working hypotheses about important mechanisms that control the behavior of injected CO2 are developed and tested. This approach has been studied extensively over the last decade from a risk assessment perspective (Savage et al., 2004; Lewicki et al., 2006). The mechanisms that have controlled past behavior, and will control future behavior, need to be understood through fluid flow simulation based on an understanding of the fluid and chemical processes active at the pore level and guided by available injection/production and monitoring data.

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  • EURASIP Journal on Applied Signal Processing 2003:3, 244–251 c 2003 Hindawi Publishing Corporation An Adaptive Video Coding Control Scheme for Real-Time MPEG Applications Shih-Chang Hsia Department of Computer and Communication Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 824, Taiwan Email: hsia@ccms.nkfust.edu.tw Received 27 February 2002 and in revised form 16 September 2002 This paper proposes a new rate control scheme to increase the coding efficiency for MPEG systems.

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  • Transcriptional Activation and Repression Every gene is controlled uniquely, whether in its spatial or temporal pattern of expression or in its response to extracellular signals. It is estimated that transcription factors account for ~30% of expressed genes. A growing number of identified genetic diseases involve transcription factors (Table 62-2). The MODY (maturity-onset diabetes of the young) disorders are representative of this group of diseases; mutations in several different islet cell–specific transcription factors cause various forms of MODY (Chap. 338).

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  • Nonribosomal peptide synthetases serve as multidomain protein templates for producing a wealth of pharmaceutically important natural products. For the correct assembly of the desired natural product the interactions between the different catalytic centres and the reaction intermediates bound to the peptidyl carrier protein must be precisely controlled at spatial and temporal levels.

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  • The temporal aspects of signaling are critical to the function of signals in communications, feedback regulation and control. The production and transduction of biological signals by enzymes comprises an area of central importance and rapid progress in the biomedical sciences.

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  • The pathogenesis of formation of neurofibrillary tangles (NFTs) in Alzhei-mer’s disease (AD) brains is unknown. One of the possibilities might be that translation of tau mRNA is aberrantly regulated in AD brains.

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