Molecular Sieves: From Basic Research to Industrial Applications, Proceedings of the 3rd International Zeolite Symposium (3rd FEZA)

1984 ◽  
Vol 28 (1) ◽  
pp. 36-36 ◽  
Author(s):  
Alan S. Gevins

It would be useful to be able to directly measure the utilization of various brain systems during performance of any choosen task. During the last few years several investigators have been developing paradigms to use the P300 component of the averaged event-related potential (ERP) to assess cognitive workload. Initial results have been encouraging, and it has been suggested that the time may be ripe to transition this type of measure from the laboratory to industrial applications. In this presentation I will discuss the potential advantages and difficulties of the neuroelectric approach to cognitive workload assessment. I will consider current knowledge of the neural origin of P300, as well as its possible neural and psychological significance. Several of the popular paradigms for eliciting P300 will be reviewed, and the permissible inferences about neurocognitive functions obtainable from variations in P300 amplitude or latency will be outlined. The practical problems of transitioning an academic laboratory paradigm to an industrial research setting will be discussed, using the example of a flight simulator. Particular attention will be directed at the contamination of brain electrical recordings by instrumental artifacts, and by head, body and eye movements. The current state-of-the-art in automated detection and filtering of these contaminants will be summarized. Individual differences and the effects of metabolic factors, drugs and fatigue will be discussed, as will techniques for reducing “irrelevant” variance due to these factors. Recent developments in measuring neurocognitve functions will be presented, emphasizing the extraction of more detailed information about multiple, simultaneously- and sequentially-active brain systems. Basic research supported by grants and contracts from the National Science Foundation, The Office of Naval Research, The Air Force Office of Scientific Research, and the Air Force School of Aerospace Medicine.


ChemInform ◽  
2008 ◽  
Vol 39 (47) ◽  
Author(s):  
Nicolas D. Clement ◽  
Lucie Routaboul ◽  
Anne Grotevendt ◽  
Ralf Jackstell ◽  
Matthias Beller

2019 ◽  
Author(s):  
David Fajardo Ortiz ◽  
Annie Shattuck ◽  
Stefan Hornbostel

AbstractIn the present investigation, we set out to determine and compare the evolution of the research on viral vectors, RNAi and genomic editing platforms as well as determine the profile of the main research institutions and funding agencies. A search of papers on viral vectors RNAi, CRISPR/Cas, TALENs, ZFNs and meganucleases was carried out in the Web of Science. A citation network of 16,746 papers was constructed. An analysis of network clustering combined with text mining was performed. In the case of viral vectors a long term process of incremental innovation in which the clusters of papers are organized around specific improvements of clinical relevance was identified. The most influential investigations on viral vectors were conducted in the United States and the European Union where the main funders were government agencies. The trajectory of RNAi research included clusters related to the study of RNAi as a biological phenomenon and its use in functional genomics, biomedicine and pest control. A British philanthropic organization and a US pharmaceutical company played a key role in the development of basic RNAi research and clinical application respectively, in addition to government agencies and academic institutions. In the case of CRISPR/Cas research, basic science discoveries led to the development of technical improvements, and these two in turn provided the information required for the development of biomedical, agricultural, livestock and industrial applications. The trajectory of CRISPR/Cas research exhibits a geopolitical division of the investigation efforts between the US, as the main producer of basic research and technical improvements, and China increasingly leading the applied research. A set of philanthropic foundations played a key role in specific stages of the CRISPR/Cas research. Our results reflect a change in the model in the financing of science and the emergence of China as a scientific superpower, with implications for the trajectory of development for applications of genomic technologies.


2017 ◽  
Vol 13 (1) ◽  
Author(s):  
A. Salimi ◽  
O. Bakhtiari ◽  
M. K. Moghaddam ◽  
T. Mohammadi

Gas separation using membrane processes are potentially economical in industrial scale. Two parameters are used for analyzing the membrane separation performance: permeability and selectivity. There is a trade off between them for polymeric membranes that makes it impossible to increase both of them simultaneously. Molecular sieve membranes, on the other hand, exhibit high permeability and selectivity but are brittle in nature and costly. A new generation of membranes has made many hopes to use simultaneously both desired properties of polymers and molecular sieves in a structure called “mixed matrix membrane (MMM)” where a molecular sieve is incorporated within a polymer matrix. As other branches of science and engineering, having a tool to predict MMMs performance seems to be essential to save time and money for research and industrial applications. Many mathematical models were developed to predict MMMs performance based on separation performance of fillers and polymers. Maxwell model is the simplest model developed for prediction of electrical properties of composite materials but it is not perfect for all cases. Some modifications were performed on Maxwell model and some other modified models were developed for better prediction of MMMs separation performance. In this research, modified Maxwell and Bruggeman models were employed to predict gas separation performance of some MMMs in the current work and the results were acceptable for all non–ideal cases which might be occurred in MMMs structure.


2021 ◽  
Author(s):  
Christophe Deben ◽  
Edgar Cardenas De La Hoz ◽  
Maxim Le Compte ◽  
Paul Van Schil ◽  
Jeroen M. Hendriks ◽  
...  

AbstractPatient-derived organoids are invaluable for fundamental and translational cancer research and holds great promise for personalized medicine. However, the shortage of available analysis methods, which are often single-time point, severely impede the potential and routine use of organoids for basic research, clinical practise, and pharmaceutical and industrial applications. Here, we report the development of a high-throughput automated organoid analysis platform that allows for kinetic monitoring of organoids, named Organoid Brightfield Identification-based Therapy Screening (OrBITS). The combination of computer vision with a convolutional network machine learning approach allowed for the detection and tracking of organoids in routine extracellular matrix domes, advanced Gri3D®-96 well plates, and high-throughput 384-well microplates, solely based on brightfield imaging. We used OrBITS to screen chemotherapeutics and targeted therapies, and incorporation of a fluorescent cell death marker, revealed further insight into the mechanistic action of the drug, a feature not achievable with the current gold standard ATP-assay. This manuscript describes the validation of the OrBITS deep learning analysis approach against current standard assays for kinetic imaging and automated analysis of organoids. OrBITS, as a scalable, high-throughput technology, would facilitate the use of patient-derived organoids for drug development, therapy screening, and guided clinical decisions for personalized medicine. The developed platform also provides a launching point for further brightfield-based assay development to be used for fundamental research.


Metals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1445
Author(s):  
André Temmler ◽  
Magdalena Cortina ◽  
Ingo Ross ◽  
Moritz E. Küpper ◽  
Silja-Katharina Rittinghaus

Within the scope of this study, basic research was carried out on laser micro polishing of the tool steel 1.2379 (AISI D2) using a square, top-hat shaped intensity distribution. The influence of three different quadratic laser beam sizes (100 µm, 200 µm, 400 µm side length) and fluences up to 12 J/cm2 on the resulting surface topography and roughness were investigated. Surface topography was analyzed by microscopy, white light interferometry, spectral roughness analysis, and 1D fast Fourier transformation. Scanning electron microscopy and electrical discharge analyses indicate that chromium carbides are the source of undesired surface features such as craters and dimples, which were generated inherently to the remelting process. Particularly for high laser fluences, a noticeable stripe structure was observed, which is typically a characteristic of a continuous remelting process. Although the micro-roughness was significantly reduced, often, the macro-roughness was increased. The results show that smaller laser polishing fluences are required for larger laser beam dimensions. Additionally, the same or even a lower surface roughness and less undesired surface features were created for larger laser beam dimensions. This shows a potential path for industrial applications of laser micro polishing, where area rates of up to several m2/min might be achievable with commercially available laser beam sources.


In both industrial applications and basic research the manipulation of protein stability is essential for knowing the principles which govern protein thermostability. This leads to hotspot in data mining based protein engineering and stability prediction. There are so many works related to the prediction of protein stability but they all lack in data preprocessing, presence of duplicates in the dataset and ability to handle uncertainty present in them. The main aim of this paper is to enhance the quality of the protein stability dataset and to increase the accuracy rate of prediction system. For deduplication process fuzzy K-means (FKM)based clustering is applied to cluster and match the duplicate records and eradicate them. To handle the uncertainty Fuzzy Artificial Neural Network (FANN) is used to perform prediction on protein stability. Simulation results proved the efficiency of FKM-FANN which yields excellent results comparing the existing methods


Sign in / Sign up

Export Citation Format

Share Document