scholarly journals Assessing the presence of pesticides in modern and contemporary textile artifacts using advanced analysis techniques

2021 ◽  
Vol 72 (02) ◽  
pp. 138-143
Author(s):  
Elena Cornelia Mitran ◽  
Irina Mariana Sandulache ◽  
Lucia Oana Secareanu ◽  
Mihaela Cristina Lite ◽  
Ovidiu George Iordache ◽  
...  
Keyword(s):  
Health Effects ◽  
Scientific Research ◽  
Analytical Techniques ◽  
Analysis Techniques ◽  
The Past ◽  
Art Objects ◽  
Textile Art ◽  
Advanced Analysis ◽  
Identification And Quantification

The examination of contemporary textiles continuously offers amazing perspectives of the past for anyone who explores them. The ethnographic textile pieces are complex, both from the perspective of the component materials and regarding the techniques used for their manufacture. The action of conserving the cultural and artistic patrimony is firstly a matter of scientific research and then of technical execution. However, the possible health effects on the personnel, which are directly involved in the actions of sampling, conservation or restoration of the textile art objects, must always be taken into consideration. Textile objects can be contaminated with various toxic residues (e.g., pesticides). When investigating archaeological, modern and contemporary textiles it is very important to maintain the integrity of the artifacts, as they cannot be replaced, and the consumption or damage of even a small part of them for analytical purposes should be undertaken only if the data cannot be obtained differently. For determining the presence of pesticides in the samples they must be subjected to processes such as: extraction, enrichment of samples, isolation, identification, and quantification. Given the above, the most common methods of extraction and determination of pesticides present in textile artifacts were briefly discussed. Punctually, the analytical techniques used in the case of three selected pesticides (malathion, methoxychlor and permethrin) were evaluated

scholarly journals Aflatoxin species: their health effects and determination methods in different foodstuffs

2012 ◽  
Vol 10 (3) ◽  
pp. 675-685 ◽  
Author(s):  
Sezgin Bakırdere ◽  
Selin Bora ◽  
E. Bakırdere ◽  
Fırat Aydın ◽  
Yasin Arslan ◽  
...  
Keyword(s):  
Health Effects ◽  
Analytical Techniques ◽  
The Other ◽  
Advantages And Disadvantages ◽  
Time Period ◽  
Long Time ◽  
Sensitive Determination ◽  
Determination Methods ◽  
And Storage

AbstractCarcinogenic and mutagenic properties of aflatoxin species are known in literature. Their intake over a long time period might be health-dangerous for human even at trace levels. It is well known that different foodstuffs can be contaminated by aflatoxin species through growing and storage. Due to the serious health effects, sensitive determination of aflatoxin species in any matrices related with the human being is very crucial at trace levels. In literature, there are sensitive techniques to analyze the different samples for the contents of their aflatoxin species. Each technique has some advantages and disadvantages over the other techniques. This review aims to summarize the different health effects of aflatoxin species, development of analytical techniques and applications of developed techniques in a variety of matrices.

scholarly journals Art? Science? .... Alchemy: The materiality of spiritual expression in artistic creation revealed through the analytical techniques of a heritage conservator

2021 ◽  
Author(s):  
Maggi Loubser ◽  
Salome le Roux
Keyword(s):  
South African ◽  
Analytical Techniques ◽  
Chemical Components ◽  
African Art ◽  
The Past ◽  
Art Form ◽  
The Aesthetic ◽  
Spiritual Impact ◽  
Spiritual Expression

To the uninitiated, it is quite probable that the results that art conservators derive from analytical techniques, may resemble alchemy, but they do not create gold from lead. Instead, they represent the composition of an object as its chemical components. X-ray fluorescence spectroscopy (XRF) has long been used for the compositional determination of minerals and metals in the mining and manufacturing industries, and over the past few years the applications in art and conservation increased rapidly. In addition, technical photography (in which filtering determines which wavelengths of light reach the camera) has the ability to create a new art form – one that, apart from being visually appealing, can provide information on the materials which had been used by the artist. In this manner, a whole new layer of information may be revealed, adding to the aesthetic and spiritual impact of the work. In this article, two objects of African art, namely a century-old prayer scroll from Ethiopia and a twodecades old sculpture by South African artist Lucky Sibiya, are investigated to see if this ‘alchemy’ can reveal that which even the artists were unaware of.

The Use of Advanced Analytical Techniques for Characterization of the Chemical, Physical, and Crystallographic Nature of a Surface

1973 ◽  
Vol 31 ◽  
pp. 132-133 ◽  
Author(s):  
R. E. Herfert
Keyword(s):  
Surface Characterization ◽  
Analytical Techniques ◽  
X Ray Diffraction ◽  
Depth Of Penetration ◽  
X Ray ◽  
The Past ◽  
Transmission Electron ◽  
Scanning Electron

Studies of the nature of a surface, either metallic or nonmetallic, in the past, have been limited to the instrumentation available for these measurements. In the past, optical microscopy, replica transmission electron microscopy, electron or X-ray diffraction and optical or X-ray spectroscopy have provided the means of surface characterization. Actually, some of these techniques are not purely surface; the depth of penetration may be a few thousands of an inch. Within the last five years, instrumentation has been made available which now makes it practical for use to study the outer few 100A of layers and characterize it completely from a chemical, physical, and crystallographic standpoint. The scanning electron microscope (SEM) provides a means of viewing the surface of a material in situ to magnifications as high as 250,000X.

Transmission Electron Microscopy of Protein Macromolecules

1971 ◽  
Vol 29 ◽  
pp. 424-425
Author(s):  
Henry S. Slayter
Keyword(s):  
Biological Systems ◽  
Metal Vapor ◽  
Resolving Power ◽  
Electron Microscopic ◽  
Chemical Methods ◽  
Molecular Weights ◽  
The Past ◽  
Physical Chemical ◽  
Transmission Electron

Electron microscopic methods have been applied increasingly during the past fifteen years, to problems in structural molecular biology. Used in conjunction with physical chemical methods and/or Fourier methods of analysis, they constitute powerful tools for determining sizes, shapes and modes of aggregation of biopolymers with molecular weights greater than 50, 000. However, the application of the e.m. to the determination of very fine structure approaching the limit of instrumental resolving power in biological systems has not been productive, due to various difficulties such as the destructive effects of dehydration, damage to the specimen by the electron beam, and lack of adequate and specific contrast. One of the most satisfactory methods for contrasting individual macromolecules involves the deposition of heavy metal vapor upon the specimen. We have investigated this process, and present here what we believe to be the more important considerations for optimizing it. Results of the application of these methods to several biological systems including muscle proteins, fibrinogen, ribosomes and chromatin will be discussed.

RHEUMATOLOGIC PATIENTS HOSPITALIZATION FEATURES

2018 ◽  
Vol 19 (3) ◽  
pp. 19-24
Author(s):  
A. S. Povzun ◽  
V. I. Mazurov
Keyword(s):  
Emergency Care ◽  
Scientific Research ◽  
Scientific Research Institute ◽  
Current Structure ◽  
The City ◽  
Research Institute

The purpose of the work was to study the nosological structure of rheumatologic patients hospitalized  in emergency hospitals. The analysis of the obtained distribution and its comparison with the structure  of patients at the Scientific Research Institute of emergency care named after I. I. Djanelidze and the City  Rheumatology Center were done. Determination of the current structure of hospitalization of rheumatologic  patients can serve as a basis of its forecasting for the subsequent periods.

FAKTOR YANG MEMPENGARUHI BEHAVIOR INTENTION UNTUK PENGGUNAAN APLIKASI DOMPET DIGITAL MENGGUNAKAN MODEL UTAUT2

2020 ◽  
Vol 25 (2) ◽  
pp. 111-122
Author(s):  
Aries Andrianto
Keyword(s):  
Sem Analysis ◽  
Electronic Money ◽  
Analysis Techniques ◽  
Behavior Intention ◽  
The Past ◽  
Performance Expectancy ◽  
Effort Expectancy ◽  
Facilitating Conditions ◽  
Positive Effect ◽  
Digital Wallet

Based on Bank Indonesia data, electronic money transactions have grown rapidly in the past 10 years. Throughout 2018, the volume of electronic money transactions was 2.92 billion transactions, growing 16,600 times compared to 2009.This study aims to analyze the factors that influence interest in using the LinkAja digital wallet using the UTAUT 2 method. The object of this study is the LinkAja digital wallet user who is domiciled in Jakarta. The independent variables examined in this study were Performance Expectancy, Effort Expectancy, Social Influence, Facilitating Conditions, Hedonic Motivation, and Habit on Behavior Intention using PLS-SEM analysis techniques. The results of this study indicate that Price Value has a positive effect on Behavior Intention.

DINAMIKA POLITIK PERSETUJUAN BERSAMA TENTANG PENETAPAN DESA ADAT DI KABUPATEN ROKAN HULU TAHUN 2014

2017 ◽  
Vol 15 (1) ◽  
pp. 21
Author(s):  
Haryo Suganda ◽  
Raja Muhammad Amin
Keyword(s):  
Regulatory Region ◽  
Field Research ◽  
Analysis Techniques ◽  
Political Dynamics ◽  
Political Interests ◽  
Wide Range ◽  
Information Method ◽  
Qualitative Descriptive ◽  
The Village

This study is motivated the identification of policies issued by the regional Governmentof Rokan Hulu in the form of Regulatory region number 1 by 2015 on the determination of thevillage and Indigenous Village. Political dynamics based on various interests against themanufacture of, and decision-making in the process of formation of the corresponding localregulations determination of Indigenous Villages in the Rokan Hulu is impacted to a verysignificantamount of changes from the initial draft of the number i.e. 21 (twenty one) the villagebecame Customary 89 (eighty-nine) the Indigenous Villages who have passed. Type of thisresearch is a qualitative descriptive data analysis techniques. The research aims to describe theState of the real situation in a systematic and accurate fact analysis unit or related research, aswell as observations of the field based on the data (information). Method of data collectionwas done with interviews, documentation, and observations through fieldwork (field research).The results of the research on the process of discussion of the draft local regulations andmutual agreement about Designation of Indigenous Villages in the Rokan Hulu is, showed thatthe political dynamics that occur due to the presence of various political interests, rejectionorally by Villagers who were judged to have met the requirements of Draft Regulations to beformulated and the area for the set to be Indigenous Villages, and also there is a desire fromsome villages in the yet to Draft local regulations in order to set the Indigenous village , there isa wide range of interests of these aspects influenced the agreement to assign the entire localVillage which is in the Rokan Hulu become Indigenous village, and the village of Transmigrationinto administrative Villages where the initiator of the changes in the number of IndigenousVillages in the Rokan Hulu it is the desire of the local Government of its own.

Crime and Punishment

2017 ◽  
Author(s):  
Richard Adelstein
Keyword(s):  
Criminal Liability ◽  
Court Case ◽  
Efficient Allocation ◽  
Two Stage ◽  
Crime And Punishment ◽  
The Past ◽  
Ex Post ◽  
Ex Ante ◽  
Supreme Court Case

This chapter elaborates the operation of criminal liability by closely considering efficient crimes and the law’s stance toward them, shows how its commitment to proportional punishment prevents the probability scaling that systemically efficient allocation requires, and discusses the procedures that determine the actual liability prices imposed on offenders. Efficient crimes are effectively encouraged by proportional punishment, and their nature and implications are examined. But proportional punishment precludes probability scaling, and induces far more than the systemically efficient number of crimes. Liability prices that match the specific costs imposed by the offender at bar are sought through a two-stage procedure of legislative determination of punishment ranges ex ante and judicial determination of exact prices ex post, which creates a dilemma: whether to price crimes accurately in the past or deter them accurately in the future. An illustrative Supreme Court case bringing all these themes together is discussed in conclusion.

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