scholarly journals Parallel data acquisition and reconstruction method of near-field ptychography for large samples

2021 ◽  
Author(s):  
Huixiang Lin ◽  
Wenhui Xu ◽  
Fucai Zhang
Keyword(s):  
Data Acquisition ◽  
Near Field ◽  
Reconstruction Method ◽  
Large Samples ◽  
Parallel Data

Proving the Preclusion of Data Manipulation Using Parallel Data Acquisition in Chromatography

2018 ◽  
Vol 941 ◽  
pp. 2390-2394
Author(s):  
David Thomas Marehn ◽  
Detlef Wilhelm ◽  
Heike Pospisil ◽  
Roberto Pizzoferrato
Keyword(s):  
Data Acquisition ◽  
Best Practice ◽  
Sampling Rate ◽  
Good Manufacturing Practice ◽  
Special Role ◽  
Analytical Instruments ◽  
Data Collector ◽  
Parallel Data ◽  
Time Variations ◽  
Hplc Detector

Traceability has an enormous value for companies, but especially for those working in the regulated environment. It plays a special role in the field of pharmacy with respect to manufacturing, controlling and distributing batches of drugs. Through the guidance of Good Manufacturing Practice (GMP) traceability should be ensured. An increasing number of pharmaceutical companies are member of one of the global pharmacopoeias (United States Pharmacopeia, European Pharmacopeia and Japanese Pharmacopeia). The specifications of these pharmacopoeias describe the best practice in documentation, control, qualification and risk management. But however, the pharmacopoeias are written very generally and do not distinguish between the vendors of the analytical instruments. Here, we analyze how chromatographic analyses and data acquisition rely on a specific vendor of the device and the chromatography data system (CDS), the controlling software. We present a way to compare the data acquisition of different CDSs communicating with HPLC instruments. A newly developed software called Data Collector allows the acquisition of data from a HPLC detector parallel to the controlling CDS in the same run. Two HPLC systems and two different CDSs using a well defined sample standard have been tested. The direct comparison of the acquired data precludes unexpected data manipulations of both tested CDSs and shows that there are primarily deviations between the CDSs due to time variations only which depend on the sampling rate. All in all the Data Collector can be used for the traceability of data acquisition.

scholarly journals Parallel data acquisition of in-source fragmented glycopeptides to sequence the glycosylation sites of proteins

2016 ◽  
Vol 37 (11) ◽  
pp. 1420-1430 ◽  
Author(s):  
Jingfu Zhao ◽  
Ehwang Song ◽  
Rui Zhu ◽  
Yehia Mechref
Keyword(s):  
Data Acquisition ◽  
Glycosylation Sites ◽  
Parallel Data

Real-time data acquisition and parallel data processing solution for TJ-II Bolometer arrays diagnostic

2006 ◽  
Vol 81 (15-17) ◽  
pp. 1863-1867
Author(s):  
E. Barrera ◽  
M. Ruiz ◽  
S. López ◽  
D. Machón ◽  
J. Vega ◽  
...  
Keyword(s):  
Data Processing ◽  
Data Acquisition ◽  
Real Time ◽  
Time Data ◽  
Parallel Data ◽  
Real Time Data ◽  
Bolometer Arrays ◽  
Processing Solution

Single water gun far‐field pressure signatures estimated from near‐field measurements

Geophysics ◽  
1985 ◽  
Vol 50 (2) ◽  
pp. 257-261 ◽  
Author(s):  
M. H. Safar
Keyword(s):  
High Resolution ◽  
Data Acquisition ◽  
Seismic Data ◽  
Near Field ◽  
Field Measurements ◽  
Reference Source ◽  
Far Field ◽  
Air Gun ◽  
Seismic Data Acquisition ◽  
Marine Seismic

An important recent development in marine seismic data acquisition is the introduction of the Gemini technique (Newman, 1983, Haskey et al., 1983). The technique involves the use of a single Sodera water gun as a reference source together with the conventional air gun or water gun array which is fired a second or two after firing the reference source. The near‐field pressure signature radiated by the reference source is monitored continuously. The main advantage of the Gemini technique is that a shallow high;resolution section is recorded simultaneously with that obtained from the main array.

A decoupled source current reconstruction method for noisy and reactive near-field to far-field transformation

2017 ◽  
Vol 28 (1) ◽  
pp. e21157
Author(s):  
Mohammad Bod ◽  
Reza Sarraf-Shirazi ◽  
Gholamreza Moradi ◽  
Ali Kiaee ◽  
Amir Jafargholi ◽  
...  
Keyword(s):  
Near Field ◽  
Reconstruction Method ◽  
Far Field ◽  
Field Transformation ◽  
Source Current ◽  
Current Reconstruction

On the Formulation and Implementation of the Love's Constraint for the Source Reconstruction Method

2021 ◽  
Author(s):  
Mario Phaneuf ◽  
Puyan Mojabi
Keyword(s):  
Near Field ◽  
Reconstruction Method ◽  
Source Reconstruction ◽  
The Novel ◽  
Reconstruction Accuracy ◽  
Advantages And Disadvantages ◽  
Novel Technique ◽  
Antenna Measurements ◽  
Regularization Techniques ◽  
The Cost

The formulation and implementation of the Love's condition constraint for the source reconstruction method (SRM) in near-field antenna measurements is analyzed in the context of inverse problems. To this end, the SRM is first analyzed to identify the non-unique or non-radiating current sources which may be present. Next, the advantages and disadvantages of general regularization techniques, which may address the non-radiating currents, are presented which serve to motivate the use of the Love's condition constraint. The main methods of formulating the constraint are then presented, one of which is a novel technique developed for this paper. Following this, the formulation methods are analyzed in order to predict the similarities and differences of the methods in the context of addressing the non-radiating currents of the SRM. This analysis is reinforced by simulated antenna measurements. In particular, the novel formulation method is demonstrated to provide greater reconstruction accuracy (in the examples considered), at the cost of computational complexity.

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