extreme care
Recently Published Documents


TOTAL DOCUMENTS

110
(FIVE YEARS 29)

H-INDEX

12
(FIVE YEARS 1)

2022 ◽  
pp. 107754632110421
Author(s):  
Beena Limkar ◽  
Gautam Chandekar

Dynamic analysis of Sitar, an Indian string instrument, is important for better understanding of the instrument behavior during performance. Sitar has complex geometry, and most of its components have anisotropic material properties, which generate a lot of challenges in performing numerical modal analysis. Considering this, an experimental approach of operational modal analysis (OMA) is performed on Sitar to extract its natural frequencies using the Stochastic Subspace Identification method. Hammer or shaker excitation required for conventional experimental modal analysis (EMA) has huge limitations of using harder hammer tips and high magnitude force as the instrument is delicate. However, to validate OMA results, EMA is performed with extreme care using an instrumented hammer with soft tip and with a very low excitation force. PolyMAX algorithm is used in EMA. It is observed that most of the correlated OMA and EMA modes lie in the audible frequency range. The maximum absolute percent error observed for these frequencies is 2.14%. All the modes obtained in OMA are significant as the string excitation simulate close to the real-life performing situation. Most of these modes map to musical note frequencies. Considering the detrimental effect of excitation required for EMA, OMA is a recommended method for extracting modal characteristics of Sitar.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sarita Devi ◽  
Roshni M. Pasanna ◽  
Nikhil Nadiger ◽  
Santu Ghosh ◽  
Anura V. Kurpad ◽  
...  

AbstractVenous plasma metabolomics is a potent and highly sensitive tool for identifying and measuring metabolites of interest in human health and disease. Accurate and reproducible insights from such metabolomic studies require extreme care in removing preanalytical confounders; one of these is the duration of tourniquet application when drawing the venous blood sample. Using an untargeted plasma metabolomics approach, we evaluated the effect of varying durations of tourniquet application on the variability in plasma metabolite concentrations in five healthy female subjects. Tourniquet application introduced appreciable variation in the metabolite abundances: 73% of the identified metabolites had higher temporal variation compared to interindividual variation [Intra-Class Correlation (ICC) > 0.50]. As such, we recommend tourniquet application for minimal duration and to wait for 5 min with the needle in situ after removing the tourniquet, to reduce hemostasis-induced variability and false flags in interpretation.


Author(s):  
Pohandoy Ali Muhammad Khoshhal

Writing is one of the most well-known phenomena that may help a civilization evolve and improve. Writing is how a society's knowledge, literature, and culture are passed down from generation to generation for millennia. Writing, as a significant aspect of civilization, should be constantly improved, updated, and given special attention so that it can carry knowledge across generations in the most efficient manner possible. We all know that writing is a difficult process that needs more thought and time. This difficult activity needs extreme care in order to be completed correctly. In this study topic, I've covered a wide range of topics related to essay writing, including how to write an essay, the stages to writing an essay, why write an essay, prewriting, and how to research, prepare, and write an essay. The purpose of the research on this topic is, in the first how to research and write an academic essay, steps and plans of writing an essay, essay writing checklist and the structure of the traditional essay writing and in secondly, familiarity with the method and kind of research is considered in this topic. The product and result of the research work on this topic is, the study of vague details in the field of scientific research; especially, essay writing (basic essay structure, steps in the essay writing process and …) which has added to the richness of this scientific – research article. Aim: My purpose to write this topic is to make clear how someone can write one literature essay by using best method of writing and best structure of essay. It is so much good for me to search about this subject because I faced with some words that before I never read it.


2021 ◽  
Author(s):  
◽  
Colin Truscott Johnson

<p>A property of a new or unknown organic compound which must be determined once the empirical formula and molecular weight are known, is the number of active or replaceable hydrogen atoms which the compound contains. These include hydrogen atoms present in amine, hydroxyl, carboxyl and other groups, where the hydrogen is not bound to a carbon atom but to an oxygen, nitrogen or sulphur atom or is in a position where it can ionize. The most general method by which this may be done quantitatively, is the one originally due to Zerewitinoff Zerewitinoff - Berichte 40 2023 (1907) 41 2233 (1908) 42 4802 (1909) 43 3590 (1910) 47 1659 (1914) 47 2417 (1914) and since developed on a micro scale by Roth A. Soltys Mikrochemie 20 107 (1936), Flaschentrager A. Roth Mikrochemie 11 140 (1932), whose method incorporates work by Tschugaeff - Flaschentrager z. Physiol Chem. 146 219 (1923) and the other two authors, and Soltys L. Tschugaeff Berichte 35 3912 (1902), and incorporates many of the latest improvements. This involves the quantatatively evolution of methane from reaction of the Grignard reagent MeMgI on groups such as -SH, -OH, -NH2, -COOH etc., i.e. those groups containing active or replaceable hydrogen atoms. Analysis by this method requires extreme care in technique and exact attention to experimental details. High results are obtained if the solvent or any part of the apparatus contains moisture and the whole determination must be carried out in an atmosphere of nitrogen to avoid reaction of the Grignard reagent with any oxygen present. Low results are obtained if the test solution does not dissolve completely in the chosen solvent and it is essential to carry out a blank prior to each analysis. The proceedure is labourious and painstaking and gives an accuracy of not greater than 5% using 3-5 mgm of organic compound. It also has the disadvantage that the Grignard Reagent will also react with other groups, such as carbonyl, aldehyde, nitrile etc., which may be present. This method cannot be applied to highly water soluble compounds which do not dissolve in ethers or other organic solvents and as the molecular size or complexity of the sample increases, the accuracy of the gasometric reactions becomes less, due to side reactions and incomplete reaction.</p>


2021 ◽  
Author(s):  
◽  
Colin Truscott Johnson

<p>A property of a new or unknown organic compound which must be determined once the empirical formula and molecular weight are known, is the number of active or replaceable hydrogen atoms which the compound contains. These include hydrogen atoms present in amine, hydroxyl, carboxyl and other groups, where the hydrogen is not bound to a carbon atom but to an oxygen, nitrogen or sulphur atom or is in a position where it can ionize. The most general method by which this may be done quantitatively, is the one originally due to Zerewitinoff Zerewitinoff - Berichte 40 2023 (1907) 41 2233 (1908) 42 4802 (1909) 43 3590 (1910) 47 1659 (1914) 47 2417 (1914) and since developed on a micro scale by Roth A. Soltys Mikrochemie 20 107 (1936), Flaschentrager A. Roth Mikrochemie 11 140 (1932), whose method incorporates work by Tschugaeff - Flaschentrager z. Physiol Chem. 146 219 (1923) and the other two authors, and Soltys L. Tschugaeff Berichte 35 3912 (1902), and incorporates many of the latest improvements. This involves the quantatatively evolution of methane from reaction of the Grignard reagent MeMgI on groups such as -SH, -OH, -NH2, -COOH etc., i.e. those groups containing active or replaceable hydrogen atoms. Analysis by this method requires extreme care in technique and exact attention to experimental details. High results are obtained if the solvent or any part of the apparatus contains moisture and the whole determination must be carried out in an atmosphere of nitrogen to avoid reaction of the Grignard reagent with any oxygen present. Low results are obtained if the test solution does not dissolve completely in the chosen solvent and it is essential to carry out a blank prior to each analysis. The proceedure is labourious and painstaking and gives an accuracy of not greater than 5% using 3-5 mgm of organic compound. It also has the disadvantage that the Grignard Reagent will also react with other groups, such as carbonyl, aldehyde, nitrile etc., which may be present. This method cannot be applied to highly water soluble compounds which do not dissolve in ethers or other organic solvents and as the molecular size or complexity of the sample increases, the accuracy of the gasometric reactions becomes less, due to side reactions and incomplete reaction.</p>


2021 ◽  
Vol 1203 (3) ◽  
pp. 032112
Author(s):  
Artur Zaguła ◽  
Tomasz Grzelakowski

Abstract Lodz (Łódź) is one of the major urban centres in Poland - and a city of unique historical and cultural heritage. The city is continuously changing and developing, respecting its identity and tradition or declaring that. The article aims to present field and case studies of three examples of the revitalisation of neglected areas in Lodz. These post-industrial spaces lost their functions in the last decade of the XXth century. These three projects in different parts of the city with other characteristics and ownership situations represent three different approaches to revitalising historical objects and adjusting them to new functions. Given cases are compelling examples of the various methods used to post-industrial heritage protection and conservation activities and the outcome of those entirely different strategies. As it seems the private entrepreneur has reached the best result in raising activities at the neglected old factory plot but at the same time while placing the responsibility of the space on its new users. Simultaneously, the public financed project oversight by towns authorities introduce the most changes to the historical tissue and seems not to reach its goals as far as a revitalisation of the area is concerned. In this light, the last project joining both private and public funds and introducing a new design solution with extreme care for historical tissue seems to reach the goals of both at a satisfactory level. The examples show how different strategies for cities to redeveloped their image and function work in Mid-European post-communism countries realities and how other types of public life participants embrace this heritage.


2021 ◽  
Vol 10 (1) ◽  
pp. 12-16
Author(s):  
Edward Pierzgalski

Abstract The article presents 9 water alerts illustrating the state and problems of water management in Poland three years after the entry of the new Water Act into force on January 1, 2018. The alerts were developed by a group of experts critically assessing some of the introduced legislative changes. The alerts analyzed the main problems related to drought and flood protection as well as the specificity of water management in cities and rural areas. Postulates to improve the legal regulations in the field of water management and financing, its integration with spatial planning and educational needs in this regard were also presented. The content of 8 alerts is briefly discussed, and the problem of water–agriculture interaction is presented in more detail. The article indicates that legal regulations of water management are particularly difficult as they apply to the entire society, almost all economic sectors and the natural environment, and its preparation must be carried out with extreme care after many analyzes and debates.


Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1470
Author(s):  
Marco Anni ◽  
Arianna Cretí ◽  
Maria Luisa De De Giorgi ◽  
Mauro Lomascolo

Lead halide perovskites are emerging as extremely interesting active materials for a wide variety of optoelectronic and photonic devices. A deep understanding of their photophysics is thus fundamental in order to properly understand the origins of the materials active properties and to provide strategies for improving them. In this work, we exploit the local morphological variations in a drop-cast thin CsPbBr3 nanocrystal film to show that the aggregation of NCs has strong effects on the peak wavelengths of PL spectra, the linewidth, and the intensity of dependence on temperature. An analysis based on models that are frequently used in the literature led to completely different conclusions about the intrinsic NC emission properties extracted from spectra measured in points with different contribution of the PL from the aggregates. Our results demonstrate that extreme care has to be used in order to correctly correlate the spectral PL features with the intrinsic emission properties of lead halide perovskite NC films.


2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Roma Enette Mascarenhas ◽  
Swati Pralhad ◽  
Nidhi Manaktala

AbstractThe global coronavirus disease 2019 (COVID-19) pandemic spread has seized the entire world and has created extensive health concerns in the general population. Despite various efforts to prevent the pandemic spread, the flare-up of this disease is still soaring due to the community spread in every area. The droplet spread from the afflicted is of the highest concern because of its rapid spread to uninfected individuals. Dental treatments have to be planned and carried out with extreme caution and dental personnel should take extreme care and follow meticulous guidelines when treating an individual with SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) infection. This article highlights the clinical picture of COVID-19 (coronavirus diseases 2019) and presents a summary of precautionary and prophylactic measures in preventing the cross-infection and the nosocomial spread of the infection in a dental setting.


2021 ◽  
Vol 32 (1) ◽  
pp. 5-23
Author(s):  
Frances Burton

The combination of the long Brexit delays, largely unwelcome General Election, a change of leadership and Cabinet composition in the Conservative government and finally the coronavirus has between them resulted in a long pause in expected reforming legislation which is much needed in Family Law, including the initial loss of the Divorce Dissolution and Separation Bill 2019, generated in 2019 by the failure of Mrs Owens’ ’ Supreme Court appeal in the now notorious case of Owens v Owens. While this was immediately hailed by the media as justification for urgent reform of the Law of Divorce in England and Wales – on the grounds that English law was almost alone in modern liberal jurisdictions in lacking a No Fault Divorce regime – clearly this has now been overtaken by subsequent events. While it may be factually accurate that England and Wales does not have such a regime for dissolution of marriage without fault and by consent (at least without satisfying the inconvenient condition of waiting for the two-year delay necessary for a decree on the basis of two years of separation and consent), and perhaps should have one for the reason stated, the failed Owens appeal has absolutely no jurisprudential connection with any urgency for reform of the law in order to secure such a decree at all. This is because the legal profession has been effectively obtaining divorces under the present law for over 40 years, and, notwithstanding Owens, has been continuing to do so since 2018, albeit with the caveat that drafting must be undertaken with extreme care to be sure to avoid a repeated debacle. Nevertheless, on account of the age of the present statute, legal, political and social theorists of course have strong arguments for a No Fault addition to the existing Matrimonial Causes Act 1973 or even for replacing the existing provisions of that statute altogether. However this is because the present statute is itself a re-enactment and consolidation of the original Divorce Reform Act 1969 which led the post-WWII reforms creating our current Law of Divorce, so is well past its ‘sell-by date’, but not because it does not work in modern times. If anything, and especially with the assistance of s76 of the Serious Crime Act 2015, s 1(2)(b) of the 1973 Act works entirely consistently with present philosophy, that is, as marriage is a partnership of equals there is no place for any form of domestic abuse within it. In fact Mrs Owens thus could (and arguably should) have obtained her divorce on the existing basis, pursuant to s 1(2)(b) of the 1973 Act, namely on that of her husband’s ‘behaviour’. Thus, as indeed hinted by Lady Hale in her paragraph 50 of the Supreme Court judgment, which she added to the agreed text set by Lord Wilson, there was clear evidence of the alleged ‘authoritarian, demeaning and humiliating conduct over a period of time’, which in law was capable of founding a decree, and there was existing case law supporting this in the case of Livingstone-Stallard v Livingstone-Stallard. Consequently in her paragraph 53 she identified what in her view was thus ‘the correct disposal … to allow the appeal and send the case back to be tried again’ – which, however, could not be adopted in the particular circumstances, owing to the fact that no one, including the Appellant, Mrs Owens, wanted to go through such a trial again, not least as even her counsel, Philip Marshall QC, ‘viewed such a prospect with dread’. Thus, in her paragraph 54, Lady Hale concluded that she was ‘reluctantly persuaded that this appeal should be dismissed’ – a conclusion, however, not stopping her from including some forthright comments on the conduct of the case below, with which any analysis can only agree. So, whatever happened in Owens v Owens? In the Central London Family Court, the Court of Appeal and the Supreme Court?


Sign in / Sign up

Export Citation Format

Share Document