scholarly journals Correlations of Regional Geotechnical Parameters on the Basis of CPTU and DMT Tests

2016 ◽  
Author(s):  
Tomasz Godlewski ◽  
Małgorzata Wszędyrówny-Nast
Keyword(s):  
Field Research ◽  
Geotechnical Parameters ◽  
Research Areas ◽  
Genetic Types ◽  
Different Types ◽  
Direct Results ◽  
Interpretation Of Results

The requirements for field research for Polish conditions demand proper dependences. Dependences based on more than 30 localizations for different genetic types of soils were derived for the area of Poland. Direct results from CPT, DMT and profiles from boreholes have been collected at the test sites for individual localization. For interpretation of results, dependences and diagrams of CPTU versus DMT were created. Correlations on the background of results from literature for different types of soils for numerous research areas were collected, with established dependences for Polish grounds conditions. Additionally some recommendations for the interpretation of the results from CPTU and DMT tests for analysed soils have been proposed.

COEVALNESS OF INSECT TRACE FOSSILS AND TRACE-BEARING ROCKS, A CASE STUDY FROM THE PLIO?-PLEISTOCENE OF SW SPAIN

Palaios ◽  
2021 ◽  
Vol 36 (3) ◽  
pp. 115-121
Author(s):  
EDUARDO MAYORAL ◽  
JORGE F. GENISE ◽  
FRANCISCO J. RODRÍGUEZ-TOVAR ◽  
ANA SANTOS
Keyword(s):  
Fossil Record ◽  
Field Research ◽  
Sw Spain ◽  
Modern Age ◽  
Different Types ◽  
The Matrix ◽  
Time Gap

ABSTRACT Plio?-Pleistocene outcrops located at the southwestern edge of the Guadalquivir Basin in the area of Lepe (Huelva, Spain) provide an interesting example for studying the contemporaneity of traces with the rocks that contain them. Two different types of cells compatible with the ichnogenera Celliforma (Type 1) and Palmiraichnus (Type 2) were found in these outcrops. Their walls were constructed with the same material as the matrix and our first research in the area showed no extant bees producing them suggesting that they were coeval with the trace-bearing rocks. The case of the “Palmiraichnus-like” Type 2 cells was misleading because of its similarity with Palmiraichnus described from the region in the Canary Islands and Balearic Archipelago (Spain). Two determining features were vital in clarifying this first appearance. In the Palmiraichnus-like cells we found remains of a larval cocoon in one cell that could be dated by C14, giving a modern age. In the Celliforma-like cells more field research in the area allow us to observe extant bees nesting in these rocks in autumn. Ichnological literature show a few cases of asynchronies involving extant traces found mostly in Paleozoic and Mesozoic rocks. In contrast, the case presented herein indicates the time gap between the bearing rocks and the Lepe traces was shorter (ca. 12 ky–2.6 My), enhancing the similarity of traces and rocks and thus their potential coevalness. This case may serve as a warning about other potential examples in the fossil record in which relatively short asynchronies between traces and paleosols exist.

Obtaining of Collagen Extracts Used as Biomaterials with Applications in the Medical Field

2020 ◽  
Vol 3 (2) ◽  
pp. 84
Author(s):  
Melat Cherim ◽  
Rodica Sîrbu
Keyword(s):  
Core Protein ◽  
Morphological Structure ◽  
Molecular Structures ◽  
Supramolecular Organization ◽  
Connective Tissues ◽  
Medical Field ◽  
Genetic Types ◽  
Nano Structures ◽  
Different Types ◽  
And Function

Collagen is the core protein of connective tissues: skin, bone, tendon, base membrane, etc. Collagen is actually a family of several different genetic types. Currently they are known, in vertebrates, at least 27 different types of collagens, which shows a remarkable diversity in molecular and supramolecular organization of the tissue distribution and function, discovered and developed over 45 years. They were studied, in detail, 12 main types. Collagen-based bioproducts can be produced in a variety of molecular structures (micro and nano structures) in powder form, hydrogels and injectable solutions, films, membranes and matrices, etc. This paper presents the drying processes that are selected depending on the nature of the extract (undenatured or denatured) and morphological structure bioproduct or sponge, fibers or membranes. The most frequently used procedures for drying are freeze-drying and free drying at a temperature of approx. 25 ° C. Both processes produce no distorts to the extracts They are presented bioproducts derived from collagen which are used in medicine.

Anatomy of Counter-Jihad

2019 ◽  
pp. 379-388
Author(s):  
Stig Jarle Hansen ◽  
Linnéa Gelot
Keyword(s):  
Federal Government ◽  
Field Research ◽  
African Union ◽  
Religious Leaders ◽  
Considerable Influence ◽  
Violent Extremism ◽  
Different Types ◽  
Inclusive Approach ◽  
Territorial Control

This chapter considers how Al-Shabaab messaging can be best countered, drawing on field research in Mogadishu and Baidoa, focusing on the area of Bay/Bakool. It shows that lack of security, opportunity, and justice, combined with clan conflicts create conditions that Al-Shabaab can exploit. In Bay/Bakool, the group is seen as having semi-territorial control; in other words, a fairly regular presence despite intermittent deployments or patrols by forces of the Federal Government of Somalia and African Union Mission in Somalia. Thus, the involvement of sheikhs and clan elders is all the more important as they wield considerable influence in communities and can strengthen efforts of countering violent extremism (CVE). A wide, inclusive approach is recommended, drawing upon a combination of different types of religious leaders, in which Sufi, Shafi'i, and Quietist/non-political Wahhabism are represented.

scholarly journals El debate sobre la validez externa en economía experimental

2019 ◽  
Vol 23 (2) ◽  
pp. 309-321
Author(s):  
Rodrigo Moro ◽  
Marcelo Auday
Keyword(s):  
Experimental Economics ◽  
Empirical Evidence ◽  
External Validity ◽  
Different Types ◽  
The Difference ◽  
Interpretation Of Results

We focus on the debate on the external validity of lab results in the area of experimental economics. More specifically, we focus on Colin Camerer’s and John List’s views, who postulate opposite positions on the issue. The problem is that they partially analyze the same empirical evidence and draw from it opposite conclusions. The goal of this work is to analyze such empirical evidence to try to explain the difference in interpretation of results. We argue that the dispute in interpretations can be expressed in terms of difference of criteria used to determine external validity. From our analysis we propose the formulation of different types of external validity.

scholarly journals Mobile Raman spectroscopy in astrobiology research

2014 ◽  
Vol 372 (2030) ◽  
pp. 20140202 ◽  
Author(s):  
Peter Vandenabeele ◽  
Jan Jehlička
Keyword(s):  
Raman Spectroscopy ◽  
Data Processing ◽  
Analytical Techniques ◽  
Research Areas ◽  
Different Types ◽  
Target Molecules ◽  
Processing Techniques ◽  
Spectroscopy Research ◽  
Selection Of

Raman spectroscopy has proved to be a very useful technique in astrobiology research. Especially, working with mobile instrumentation during fieldwork can provide useful experiences in this field. In this work, we provide an overview of some important aspects of this research and, apart from defining different types of mobile Raman spectrometers, we highlight different reasons for this research. These include gathering experience and testing of mobile instruments, the selection of target molecules and to develop optimal data processing techniques for the identification of the spectra. We also identify the analytical techniques that it would be most appropriate to combine with Raman spectroscopy to maximize the obtained information and the synergy that exists with Raman spectroscopy research in other research areas, such as archaeometry and forensics.

scholarly journals The Influence of Forest Resting Environments on Stress Using Virtual Reality

2019 ◽  
Vol 16 (18) ◽  
pp. 3263 ◽  
Author(s):  
Xiaobo Wang ◽  
Yaxing Shi ◽  
Bo Zhang ◽  
Yencheng Chiang
Keyword(s):  
Virtual Reality ◽  
Field Research ◽  
Stress Relief ◽  
Forest Environment ◽  
Psychological Indicators ◽  
Different Types ◽  
Post Test ◽  
Therapy Services ◽  
Environment Type ◽  
Positive Effect

To explore the effects of different types of forest environments for forest therapy, this study focused on forest resting environments. Seven representative forest resting environments found in field research in Beijing were used as independent variables and were shown to subjects by a virtual reality (VR) video. Stress level was used as the dependent variable, and blood pressure, heart rate, salivary amylase, and the Brief Profile of Mood States (BPOMS) were used as physiological and psychological indicators. A between-subjects design was used in the experiment. A total of 96 subjects were randomly assigned to each environment type, and only one type of forest resting environment was observed. Through the relevant sample t-test and one-way analysis of variance, the pre- and post-test data of the indicators were analyzed. This study found that all the seven different types of forest resting environments can produce stress relief effects to some extent. Different types of forest resting environments have different effects on relieving stress. The most natural environment does not have the most significant effect on stress relief. A water landscape has a positive effect on the relief of stress. The conclusions of this study are conducive to the better use of the forest environment for forest therapy services.

Comparison of Various Systems for On-Site Wastewater Treatment

1990 ◽  
Vol 22 (3-4) ◽  
pp. 41-48 ◽  
Author(s):  
Frits A. Fastenau ◽  
Jaap H. J. M. van der Graaf ◽  
Gerard Martijnse
Keyword(s):  
Wastewater Treatment ◽  
Large Scale ◽  
Research Work ◽  
Field Research ◽  
Limiting Factors ◽  
Land Claims ◽  
Rotating Biological Contactor ◽  
Advantages And Disadvantages ◽  
Different Types ◽  
Selection Of

Diffuse pollution, caused by direct discharges from individual houses, small built-up nuclei, farms, camp-sites, etc., for which connection to central wastewater treatment systems is unfeasible, may be significantly reduced by on-site treatment. Based on a large scale research, including intensive field-research work on 14 systems of different types and sizes in a range equal to population equivalents (p.e) of 5 - 200 persons, 8 different types of system were compared. The comparison involved technological features, such as removal efficiency, reliability, operational and maintenance aspects, environmental impacts and land claims, together with economical features showing significant differences. Advantages and disadvantages of each system are highlighted to enable a selection of suitable systems to be made. When no limiting factors are present, it was found that - in general-infiltration systems (infiltration pits; infiltration trenches) have the best features for on-site treatment up to 100 p.e. For larger capacities, or when infiltration is not possible, the rotating biological contactor will be the best solution mainly because of the lower costs.

Development of a prototype dry decontamination method for particulate contamination: The DryCon system

2020 ◽  
Vol 15 (4) ◽  
pp. 261-273
Author(s):  
Barbara M. Alexander, PhD, PE, CIH ◽  
H. Amy Feng, MS ◽  
Gabriel Merk, BS
Keyword(s):  
Healthcare Providers ◽  
Field Research ◽  
Cold Weather ◽  
Dust Particles ◽  
Respiratory Protection ◽  
Particulate Contamination ◽  
Air Jets ◽  
Industrial Setting ◽  
Real World Applications ◽  
Different Types

Objective: This article describes the development of a prototype dry decontamination system (DryCon) for use in the event of a contamination incident involving a particulate contaminant. Disrobing and showering is currently recommended almost exclusively in mass decontamination, although it may not be feasible when water is scarce, in cold weather environments, or when there may be compliance issues with the requirement to disrobe, ie, unwillingness to disrobe. During disrobing, dust particles could also re-aerosolize, leading to inhalation of contaminants.Design: The DryCon prototype uses air jets for dry decontamination. The system is portable and can run on building-supplied 220-V power or generator power. Multiple contaminated persons can be treated rapidly, one after the other, using this system.Setting: We tested DryCon in a controlled environment, using a manikin and three different types of fabric squares to investigate its effectiveness, with a decontamination time of 60 seconds.Main outcome: At the higher airflow tested, ie, 90 percent of full blower speed or approximately 540 cfm (15 m3/minute), mean decontamination efficiencies of 56.8 percent, 70.3 percent, and 80.7 percent were measured for firefighter (FF) turnout fabric, cotton denim, and polyester double knit fabric, respectively.Results: Removal of this easily re-aerosolized fraction of the contaminants helps protect contaminated people, as well as healthcare providers they come in contact with, from the potential risk of further inhalation exposures from the re-aerosolization caused by doffing clothing.Conclusion: The results demonstrate the promise of the DryCon system for use where water is not available, as a first step prior to wet decontamination, or in an industrial setting for post-work-shift decontamination. Further lab and field research will be necessary to prove the effectiveness of this technique in real-world applications and to determine if respiratory protection or other personal protective equipment (PPE) is needed during use of the DryCon system.

Learning from complex and heterogeneous experiences: the role of knowledge codification

2015 ◽  
Vol 19 (5) ◽  
pp. 968-986 ◽  
Author(s):  
Loubna Echajari ◽  
Catherine Thomas
Keyword(s):  
Knowledge Management ◽  
Organizational Learning ◽  
Conceptual Analysis ◽  
Theory And Practice ◽  
Content Type ◽  
Research Areas ◽  
Knowledge Codification ◽  
Critical Realist ◽  
Different Types

Purpose – The purpose of this paper is to study organizational learning from complex and heterogeneous experiences. According to March (2010), this kind of high intellect learning is difficult to accomplish because it requires deliberate investments in knowledge transfer and creation. Zollo and Winter (2002) emphasized how knowledge codification can facilitate this process, as long as it is “well-performed”. However, knowledge management scholars have yet to explore what is meant by well-performed codification and how to achieve it. Design/methodology/approach – This paper addresses this gap and provides a conceptual analysis based on two related but previously disconnected research areas: organizational learning and knowledge management. Findings – This paper contributes to the literature in three ways. First, a new understanding of different types of experiences and their effects on learning is proposed. Then the codification process using a critical realist paradigm to overcome the epistemological boundaries of knowledge versus knowing is discussed; in doing so, it is shown that codification can take different forms to be “well-performed”. Finally, appropriate codification strategies based on experience type are identified. Originality/value – The abstraction-oriented codification outlined in this paper runs counter to the logic of concrete codification that dominates both theory and practice. Thus, going beyond the traditional debate on the degree of codification (i.e. should knowledge be fully codified or just partly codified), this paper introduced a new debate about the appropriate degree of abstraction.

scholarly journals A Custom-made MATLAB Based Software to Manage Leakage Current Waveforms

2011 ◽  
Vol 1 (2) ◽  
pp. 36-42 ◽  
Author(s):  
D. Pylarinos
Keyword(s):  
Leakage Current ◽  
Measuring System ◽  
Current Waveform ◽  
Public Power ◽  
Measuring Systems ◽  
Research Areas ◽  
Custom Made ◽  
Different Types ◽  
Outdoor Insulators ◽  
User Friendly

Leakage current (LC) monitoring is a widely employed tool for monitoring the performance of high voltage insulators. LC waveform monitoring is required to acquire a view of the phenomena experienced since the type of LC waveform’s shape is correlated with different types of electrical activity. In case of field monitoring, specially designed measuring systems, capable of operating under field conditions, have to be installed. The Greek Public Power Corporation (PPC) has issued a large project for monitoring the performance of outdoor insulators. A commercially available LC measuring system, was purchased and installed by PPC. The system was able to monitor various outdoor insulators, record several statistical values and intermittently record a LC waveform. The provided software lacked some capabilities that were required for certain research areas and a custom made software had to be developed. In this paper, two stand-alone MATLAB based softwares, “Leakage Current Waveform File Converter” and “Leakage Current Waveform Viewer”, both equipped with a user friendly GUI, are presented. The first software was developed in order to automatically convert multiple files from the CSV format (as extracted from the measuring system) to the MAT format in order to allow data compactness and further processing. The latter software was developed in order to offer a tool for collective viewing, printing and extraction to JPEG format, of LC waveforms in groups of user-defined numbers. The latter function gives the opportunity for easy and fast creation of waveform archives.

Sign in / Sign up

Export Citation Format

Share Document