A review of plant analysis in Australia

1993 ◽  
Vol 33 (8) ◽  
pp. 1029 ◽  
Author(s):  
PD Handson ◽  
BC Shelley

This review of plant analysis in Australia examines sample preparation, instrumentation, problem analytes, calibration, detection limits, and quality assurance. The issue of turnaround time v. analytical accuracy is discussed and the role of 'plant sap quick tests' in nutrient analysis is assessed. Results of a survey of Australian plant-testing laboratories are included.

Author(s):  
P. B. Basham ◽  
H. L. Tsai

The use of transmission electron microscopy (TEM) to support process development of advanced microelectronic devices is often challenged by a large amount of samples submitted from wafer fabrication areas and specific-spot analysis. Improving the TEM sample preparation techniques for a fast turnaround time is critical in order to provide a timely support for customers and improve the utilization of TEM. For the specific-area sample preparation, a technique which can be easily prepared with the least amount of effort is preferred. For these reasons, we have developed several techniques which have greatly facilitated the TEM sample preparation.For specific-area analysis, the use of a copper grid with a small hole is found to be very useful. With this small-hole grid technique, TEM sample preparation can be proceeded by well-established conventional methods. The sample is first polished to the area of interest, which is then carefully positioned inside the hole. This polished side is placed against the grid by epoxy Fig. 1 is an optical image of a TEM cross-section after dimpling to light transmission.


2012 ◽  
Vol 153 (3) ◽  
pp. 83-92
Author(s):  
Sándor Gődény

In Hungary healthcare finance has decreased in proportion with the GDP, while the health status of the population is still ranks among the worst in the European Union. Since healthcare finance is not expected to increase, the number of practicing doctors per capita is continuously decreasing. In the coming years it is an important question that in this situation what methods can be used to prevent further deterioration of the health status of the Hungarian population, and within this is the role of the quality approach, and different methods of quality management. In the present and the forthcoming two articles those standpoints will be summarized which support the need for the integration of quality assurance in the everyday medical practice. In the first part the importance of quality thinking, quality management, quality assurance, necessity of quality measurement and improvement, furthermore, advantages of the quality systems will be discussed. Orv. Hetil., 2012, 153, 83–92.


Author(s):  
Nina Batechko

The article outlines the conceptual framework for adapting Ukrainian higher education to the Standards and Recommendations for Quality Assurance in the European higher education area. The role of the Bologna Declaration in ensuring the quality of higher education in Europe has been explained. The conceptual foundations and the essence of standards and recommendations on quality assurance in the European higher education area have been defined. The Ukrainian realities of the adaptation of higher education of Ukraine to the educational European standards of quality have been characterized.


Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 263-271 ◽  
Author(s):  
P Naysmith ◽  
G T Cook ◽  
S P H T Freeman ◽  
E M Scott ◽  
R Anderson ◽  
...  

In 2003, a National Electrostatics Corporation (NEC) 5MV tandem accelerator mass spectrometer was installed at SUERC, providing the radiocarbon laboratory with 14C measurements to 4–5‰ repeatability. In 2007, a 250kV single-stage accelerator mass spectrometer (SSAMS) was added to provide additional 14C capability and is now the preferred system for 14C analysis. Changes to the technology and to our operations are evident in our copious quality assurance data: typically, we now use the 134-position MC-SNICS source, which is filled to capacity. Measurement of standards shows that spectrometer running without the complication of on-line δ13C evaluation is a good operational compromise. Currently, 3‰ 14C/13C measurements are routinely achieved for samples up to nearly 3 half-lives old by consistent sample preparation and an automated data acquisition algorithm with sample random access for measurement repeats. Background and known-age standard data are presented for the period 2003–2008 for the 5MV system and 2007–2008 for the SSAMS, to demonstrate the improvements in data quality.


Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 382
Author(s):  
Barbara Pacholczyk-Sienicka ◽  
Grzegorz Ciepielowski ◽  
Łukasz Albrecht

Spices and herbs are among the most commonly adulterated food types. This is because spices are widely used to process food. Spices not only enhance the flavor and taste of food, but they are also sources of numerous bioactive compounds that are significantly beneficial for health. The healing effects of spices are connected with their antimicrobial, anti-inflammatory and carminative properties. However, regular consumption of adulterated spices may cause fatal damage to our system because adulterants in most cases are unhealthy. For that reason, the appropriate analytical methods are necessary for quality assurance and to ensure the authenticity of spices. Spectroscopic methods are gaining interest as they are fast, require little or no sample preparation, and provide rich structural information. This review provides an overview of the application of NMR spectroscopy combined with chemometric analysis to determine the quality and adulteration of spices.


Author(s):  
Tony Badrick ◽  
Mohamed Saleem ◽  
Wesley Wong

Background Reporting critical results in a timely manner is a crucial role of clinical laboratories. Traditionally, these results were reported using the phone or fax system. However, there are now other modes of communication for this reporting. Quality improvement in any organization is driven by detection of errors and benchmarking against peers. In the case of critical result reporting, there are few current widely used Benchmarking schemes. Methods The Roche Clinical Chemistry Benchmarking Survey in 2019 added questions about critical result reporting including the mode of communication and turnaround time key performance index. This survey includes over 1100 laboratories from 20 countries. Results The survey revealed a range of communication strategies with phone calls still the commonest followed by email. The key performance index for most laboratories was less than 10 min. Conclusion Benchmarking can provide key information for quality improvement activities, particularly pre- and postanalytical.


2021 ◽  
pp. 1-6
Author(s):  
Satoshi Morito ◽  
Takao Nitanda ◽  
Ryuko Tsukamoto ◽  
Shingo Kamoshida ◽  
Hiroshi Yasui ◽  
...  

Immunocytochemistry (ICC) is an important ancillary technique in clinical cytology for not only identifying and characterizing tumor cells but also gaining prognostic or therapeutic information. Although cell blocks are often prepared for immunocytochemical evaluation of body cavity fluid and fine-needle aspiration specimens, they are not suitable for hypocellular samples. Liquid-based cytology can help prepare additional smears from residual cytological specimens. However, since conventional methods are used for nongynecological specimens in most laboratories, ICC is often limited by the number of cytological smears. Cell transfer methods permit to evaluate several immunocytochemical markers in a single cytological smear. Yet, these methods have some limitations; for example, they are time-consuming (about 3–40 h) and medium membranes with their attached cells are occasionally stretched or torn when peeled off the slides. Therefore, in an attempt to solve these problems, we developed a rapid and reliable cell transfer method using a nylon mesh. Our method requires no special equipment or reagent and can significantly reduce the turnaround time, as compared to previous methods.


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