scholarly journals A practical solution of matrix interference effect with saline replacement in samples of chemotherapy received patients whose differential count of leukocyte cannot be measured

Author(s):  
hatice bozkurt yavuz
1968 ◽  
Vol 07 (01) ◽  
pp. 1-7
Author(s):  
Muhammad Razzak ◽  
Robert Botti ◽  
William MacIntyre

SummaryA pair of printing scalers was used to record the information obtained by external monitoring of the isotope dilution curve following the intravenous injection of radioiodinated human serum albumin. The first scaler gives the differential count rate of the curve at increments of one second, whereas the second integrates continuously the isotope dilution curve. This recording device enabled cardiac output determinations to be calculated rapidly at the bedside without any loss in accuracy.Using this method in 15 normal individuals, the cardiac output was found to be 6.13 ± 0.73 liters/minute (Mean ± 1 S.D.), with a cardiac index of 3.36 ± 0.35 liters/minute/m2. In the same group of normals, the stroke index (stroke volume/surface area) amounted to 50 ± 7.3 ml/beat/m2.Comparison of the results of this method with those obtained by integration of the entire isotope dilution curve by an IBM 1620 computer showed excellent agreement, proving the validity of the suggested technique.


2019 ◽  
Author(s):  
Austin Gallagher ◽  
Huan Tian ◽  
Osmar A. Torres-Herrera ◽  
Shuai Yin ◽  
Anxin Xie ◽  
...  

A diastereoselective Co<sub>2</sub>(CO)<sub>8</sub>-mediated Pauson-Khand reaction (PKR) of siloxy-tethered 1,7-enynes for the synthesis of cyclopentaoxasilinones has been developed. This transformation can be performed on a multi-gram scale and is characterized by broad substrate scope, functional group compatibility, and high chemo- and diastereoselectivity. Oxidation of the resulting cyclopentaoxasilinones delivers stereoenriched β-alkylated cyclopentenones, which are inaccessible by intermolecular PKRs. This research provides a practical solution to the challenges associated with the classical intermolecular PKR.


2020 ◽  
Vol 26 (9) ◽  
pp. 957-968
Author(s):  
K. I. Derevyanko ◽  
V. P. Orlovskaya

Aim. The presented study aims to conduct a comprehensive phenomenological analysis of creativity as a resource for the development of a service enterprise through the example of the creative activity of event agencies. Tasks. The authors examine the phenomenon of creativity and develop a theoretical framework for considering creativity as a resource for the development of a service enterprise through the example of event agencies; identify the indicators of creativity of a service enterprise; develop a scale of creativity of event agencies operating in the modern services market. Methodology. The theoretical and methodological basis of this study includes the works of Russian and foreign scientists and experts in the field of creativity and its use as a resource for the development of service enterprises. The authors use the phenomenological method (to examine the phenomenon of creativity as a whole), comparative (comparison of approaches, ideas, and experience of different countries in the field of creative activity), hermeneutical (interpretation of various aspects related to the analysis of creativity), and systems analysis. To examine the indicators of creativity of event agencies, this study uses quantitative and qualitative analysis of information materials published on the official websites of the examined cities, convention and event agencies, statistics of professional associations of congress and exhibition organizations, including the International Congress and Convention Association (ICCA), as well as other analytical reports, expert opinions, and applied research on the topic. The study analyzes statistics on the number and themes of events held in each city, event infrastructure, the range of provided services, and the level of service. The cities are then comparatively analyzed based on the results of examination of each city, and general conclusions are formulated. Results. The main problem addressed by this study is associated with the concept of “creativity”, its content, degree, limits, and risks. The scientific novelty of the study is predicated upon the insufficient investigation of the problem of creativity as a resource for the development of a service enterprise. This study is one of the first attempts to develop a methodology for comprehensively analyzing the phenomenon of creativity with regard to event agencies. The results obtained during the study are vital for the theoretical conceptualization and practical solution of the problem of creativity in the context of economic knowledge: the key indicators of creativity of an event agency are identified and a creativity assessment model is developed based on the range of possible manifestations of creativity in the professional activity of event agencies. Creativity is analyzed as a resource for the development of a service enterprise through the example of the activity of event agencies. Eight indicators of creativity of an event agency are identified and an assessment scale is developed. The creativity indicators include “fluency”, “flexibility”, “originality”, “elaboration and synthesis”, “redirection”, “redefinition”, “reinitiation”, and “generation”. These eight indicators are incorporated into a creativity scale based on the Likert scale, which makes it possible to assess the degree (level) of creativity of an event agency on a scale of one to ten. As a result, the following problems are solved: the essence of the concept of “creativity” is determined and its main features are identified by analyzing the specific aspects of the modern MICE industry landscape. Scientific information on the topic is analyzed, systematized, and generalized. Russian and foreign experience of using creativity as a resource for the development of a service enterprise is comparatively analyzed. Conclusions. The special role of creativity as a resource for the development of an event agency is revealed, and the indicators of the agency’s creativity are formulated. A creativity scale is developed. The correlation between the competitiveness of a service enterprise and the use of the creative resource in its development is determined. This study is one of the first attempts to develop a methodology for comprehensively analyzing the phenomenon of creativity with regard to event agencies. The results of the study are important for the theoretical conceptualization and practical solution of the problem of creativity in the context of economic knowledge.


1990 ◽  
Vol 22 (3-4) ◽  
pp. 211-216
Author(s):  
Niels Skov Olesen

In some areas of Denmark nutrient removal is required even for very small wastewater plants, that is down to 500 pe (pe = person equivalents). The goal for the removal is 80% removal of nitrogen and 90% removal of phosphorus, or in terms of concentrations: 8 mg nitrogen/l and 1.2 mg phosphorus/l. The inlet concentrations are typically 40 mg N/l and 10 mg P/l. The paper presents the results from two such plants with a capacity of 800 pe. Phosphorus removal is made by simultaneous precipitation with ferrous sulphate. Nitrogen removal is carried out using the recirculation method. Both plants were originally rotor aerated oxidation ditches. They have been extended with a denitrification reactor and a recirculation pumping station. At present both plants have been in activity for about 3 years and with satisfactory results. Average concentrations of nitrogen (summer) and phosphorus is 7 mg/l and 0.9 mg/l respectively. Nitrogen removal seems to be a practical solution on these small plants. It is,though, sensitive to temperature and highly oxidized rain water. Phosphorus removal seems to be an easily run and relatively non-sensitive technique at least when using simultaneous precipitation.


2019 ◽  
Vol 14 ◽  
Author(s):  
Khaleel Ahmad ◽  
Afsar Kamal

Background: Privacy enhancing techniques are developed in order to provide strong protection to cyberspace. These techniques aim to allow users to keep their identities hidden during the communication when they are sending email, making payments online, browsing the Web or posting to newsgroups. MixNet is the most practical solution for concealing identities of message and sender’s identities. Objective: It provides sender and receiver anonymity as well as message security. The main goal of MixNet is to overcome vulnerability and enhance the performance of communication. It can efficiently handle the messages of various length and produce desirable results with privacy. The main objective of this paper is to acquire information and concepts regarding MixNet. We also provide guidelines for future research and references. Methods : The designing of MixNet depends on what cryptosystem method is used. Symmetric and Asymmetric both are used. Other methods could be also used such as PIR, CSP and FDR model, RPC, Token-based approach or others. Result: In this paper we provide an overview of MixNet approaches and presented a survey on MixNet based techniques and different models. We also constructed the comparison tables as per our requirements for better understanding. For this purpose, we found a total of 120 articles related to the MixNet published between 1990 and 2018 from the most relevant scientific resources. However, only 86 papers were analyzed due to comprehensiveness and relevancy to this article. Conclusion: Focused on the security and privacy of communication and how it can be achieved. This survey also reveals research progress and research gap on MixNet.


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