29 research outputs found
Resonance phenomenon in the quartzite from Jegłowa (Poland)
No full textTyt. z nagłówka.Bibliogr. s. [58].Kwarcyt został scharakteryzowany dzięki pomiarom dielektrycznym. Na podstawie pomiarów dielektrycznych przeprowadzonych z szerokim zakresie temperatur (50-320 K) oraz częstotliwości (10/2-3 • 10/7 Hz) został pokazany rezonans w okolicy 20 MHz. Zaproponowano metodę bazującą na zjawisku rezonansu, pozwalającą wykryć oraz obliczyć wielkości ziaren kwarcu w badanym materiale. Bazując na tej metodzie, wyznaczono średni rozmiar ziaren kwarcu w kwarcycie: 0,16 mm oraz 0,14 mm. Przeprowadzono także pomiary dielektryczne kwarcytu wygrzanego w temperaturze 800°C, 900°C oraz 1000°C. Analiza fluorescencyjna XRF pokazała, że skład chemiczny po wygrzewaniu nie zmienia się pomimo zmiany struktury.The quartzite rock has been characterized by dielectric investigation. On the basis of complex dielectric measurements in a wide temperature (50-320 K) and frequency (10/2-3 • 10/7 Hz) ranges the resonance at about 20 MHz was found. The proposed method is based on the resonance phenomenon which allows for the detection of grains of quartz and calculates their size in the studied material. Based on this method, the average size of the quartz grains (0.16 mm and 0.14 mm) embedded into quartzite was determined. Dielectric measurements of the quartzite samples annealed at 800°C, 900°C and 1000°C were performed. Results from the analysis using X-ray fluorescence (XRF) showed that the chemical composition remains unchanged after the thermal treatment, despite of the well-known crystal structure changes.Dostępny również w formie drukowanej.SŁOWA KLUCZOWE: kwarcyt, piezorezonans, pomiary dielektryczne. KEYWORDS: quartzite, piezoresonance, dielectric measurements
FUNGAL PARASITISM OF CEREAL APHIDS IN SOUTH AFRICA
No full text7 " k h. I... as t e amma s, and they will teach you, or the birds of the air, and they will tell you; 8or speak to the earth, and it will teach you, or let the fish of the sea inform you. 9Which of all these does not know that the hand of the LORD has done this? lOIn his hand is the life of every creature and the breath of all mankind"
Dilatometric Investigations of Overcritical Behaviour in [N(CH)]CuCl Crystals
No full textThe results of experimental investigation of thermal expansion of [N(CH)]CuCl crystals in a wide temperature range are presented. The anomaly of thermal deformation typical of first order phase transition at 258 K and additional continuous anomaly at 195 K were observed. It was shown that low temperature anomalies of physical properties of [N(CH)]CuCl crystals can be described as overcritical trace of isomorphous phase transitions. Results of numerical analysis of phenomenological model of improper ferroelastic exhibiting isomorphous phase transitions are presented and compared with experimentally determined temperature dependencies of spontaneous deformation of [N(CH)]Cu Cl crystals
Zjawisko rezonansu w kwarcycie z Jegłowej (Polska)
No full textThe quartzite rock has been characterized by dielectric investigation. On the basis of complex dielectric measurements in a wide temperature (50-320 K) and frequency (10/2—3 x 10/7 Hz) ranges the resonance at about 20 MHz was found. The proposed method is based on the resonance phenomenon which allows for the detection of grains of quartz and calculates their size in the studied material. Based on this method, the average size of the quartz grains (0.16 mm and 0.14 mm) embedded into quartzite was determined. Dielectric measurements of the quartzite samples annealed at 800°C, 900°C and 1000°C were performed. Results from the analysis using X-ray fluorescence (XRF) showed that the chemical composition remains unchanged after the thermal treatment, despite of the well-known crystal structure changes.Kwarcyt został scharakteryzowany dzięki pomiarom dielektrycznym. Na podstawie pomiarów dielektrycznych przeprowadzonych z szerokim zakresie temperatur (50-320 K) oraz częstotliwości (10/2--3 • 10/7 Hz) został pokazany rezonans w okolicy 20 MHz. Zaproponowano metodę bazującą na zjawisku rezonansu, pozwalającą wykryć oraz obliczyć wielkości ziaren kwarcu w badanym materiale. Bazując na tej metodzie, wyznaczono średni rozmiar ziaren kwarcu w kwarcycie: 0,16 mm oraz 0,14 mm. Przeprowadzono także pomiary dielektryczne kwarcytu wygrzanego w temperaturze 800°C, 900°C oraz 1000°C. Analiza fluorescencyjna XRF pokazała, że skład chemiczny po wygrzewaniu nie zmienia się pomimo zmiany struktury
Neogene-Quaternary slow coastal uplift of Western Europe through the perspective of sequences of strandlines from the Cotentin Peninsula (Normandy, France)
No full textThe Cotentin Peninsula (Normandy, France) displays sequences of marine terraces and rasas, the latter being wide Late Cenozoic coastal erosion surfaces, that are typical of Western European coasts in Portugal, Spain, France and southern England. Remote sensing imagery and field mapping enabled reappraisal of the Cotentin coastal sequences. From bottom to top, the N Cotentin sequence includes four previously recognized Pleistocene marine terraces (T1 to T4) at elevations < 40 m as well as four higher and older rasas (R1 to R4) reaching 200 ± 5 m in elevation. Low-standing marine terraces are not observed in the central part of the Peninsula and a limited number of terraces are described to the south. The high-standing rasas are widespread all over the peninsula. Such strandline distributions reveal major changes during the Late Cenozoic. Progressive uplift of an irregular sea-floor led to subaerial exposure of bathymetric highs that were carved into rocky platforms, rasas and marine terraces. Eventually, five main islands coalesced and connected to the mainland to the south to form the Cotentin Peninsula. On the basis of previous dating of the last interglacial maximum terrace (i.e. Marine Isotopic Stage, MIS 5e), sequential morphostratigraphy and modelling, we have reappraised uplift rates and derived: (i) mean Upper Pleistocene (i.e. since MIS 5e ~ 122 +/− 6 ka, i.e. kilo annum) apparent uplift rates of 0.04 ± 0.01 mm/yr, (ii) mean Middle Pleistocene eustasy-corrected uplift rates of 0.09 ± 0.03 mm/yr, and (iii) low mean Pleistocene uplift rates of 0.01 mm/yr. Extrapolations of these slow rates combined with geological evidence implies that the formation of the sequences from the Cotentin Peninsula occurred between 3 Ma (Pliocene) and 15 Ma (Miocene), which cannot be narrowed down further without additional research. Along the coasts of Western Europe, sequences of marine terraces and rasas are widespread (169 preserve the MIS 5e benchmark). In Spain, Portugal, S England and other parts of western France, the sequences morphostratigraphy is very similar to that of Cotentin. The onset of such Western European sequences occurred during the Miocene (e.g. Spain) or Pliocene (e.g. Portugal). We interpret this Neogene-Quaternary coastal uplift as a symptom of the increasing lithospheric compression that accompanies Cenozoic orogenies
AGH Journal of Mining and Geoengineering
No full textKwarcyt został scharakteryzowany dzięki pomiarom dielektrycznym. Na podstawie pomiarów dielektrycznych przeprowadzonych z szerokim zakresie temperatur (50-320 K) oraz częstotliwości (10/2-3 • 10/7 Hz) został pokazany rezonans w okolicy 20 MHz. Zaproponowano metodę bazującą na zjawisku rezonansu, pozwalającą wykryć oraz obliczyć wielkości ziaren kwarcu w badanym materiale. Bazując na tej metodzie, wyznaczono średni rozmiar ziaren kwarcu w kwarcycie: 0,16 mm oraz 0,14 mm. Przeprowadzono także pomiary dielektryczne kwarcytu wygrzanego w temperaturze 800°C, 900°C oraz 1000°C. Analiza fluorescencyjna XRF pokazała, że skład chemiczny po wygrzewaniu nie zmienia się pomimo zmiany struktury.The quartzite rock has been characterized by dielectric investigation. On the basis of complex dielectric measurements in a wide temperature (50-320 K) and frequency (10/2-3 • 10/7 Hz) ranges the resonance at about 20 MHz was found. The proposed method is based on the resonance phenomenon which allows for the detection of grains of quartz and calculates their size in the studied material. Based on this method, the average size of the quartz grains (0.16 mm and 0.14 mm) embedded into quartzite was determined. Dielectric measurements of the quartzite samples annealed at 800°C, 900°C and 1000°C were performed. Results from the analysis using X-ray fluorescence (XRF) showed that the chemical composition remains unchanged after the thermal treatment, despite of the well-known crystal structure changes.wersja wydawnicz
Protection of balneology resources and planning of land use as exemplified by peat of Kołobrzeg
No full textThis article presents results of analysis and findings incorporated in „Contextual analysis of the economic development of Kolobrzeg” allowing for a variety of economic activity and investments in the mining area of Mirocice, with the consideration of their potential impact on water in peatlands. The analysis incorporates description of the natural resources, exisiting and planned development of these resources and areas within its vicinity, as well as potential impact from exisiting facilities and current plans for development. The facilities have been assigned three possible levels of risk to water in peatlands: potentially high, potentially low and no risk. The areas dedicated to storage and production functions pose a potnetially high level of risk. Aside from their direct impact, they will also indirectly dirve higtened traffic by heavy trucks as well as heavy loads carried by rail. The areas dedicated to mulifamily living units, especially when accompanied by well designed infrastructure and not too densly populated, pose a potentially low level of risk. The green areas, excluded from other urban or economic development, pose no risk to water in peatlands. The current state of research around water in peatlands and its surrounding areas is insufficient. Appropriate preservation of water in peatlands necessaitates interedsciplinary research and regular monitoring which will outline the current state of the peatlands’ resources, point out actual risks and provide direction for preservation of these natural resources. Finally, this work also highlights social conflicts that emerged during our research
Going beyond (electronic) patient-reported outcomes: harnessing the benefits of smart technology and ecological momentary assessment in cancer survivorship research
No full textPurpose!#!To investigate the work situation of lung cancer survivors and to identify the factors associated with their returning to work.!##!Methods!#!Descriptive analysis and logistic regression were used to evaluate study population characteristics and independent factors of subsequently returning to work. To analyze time to return to work, Cox regression was used.!##!Results!#!The study sample included 232 lung cancer survivors of working age from 717 enrolled participants in the multi-center cross-sectional LARIS (Quality of Life and Psychosocial Rehabilitation in Lung Cancer Survivors) study. About 67% of the survivors were not employed during the survey. More than 51% of the survivors who were employed before their illness did not return to their work. The survivors who had returned to their careers were younger, associated with higher household income, lower fatigue score, and stable relationship and vocational training. Patients who received social service counseling showed a higher chance of regaining their career.!##!Conclusions!#!Lung cancer survivors were found to be associated with a high risk of unemployment and very low professional reintegration after interruption due to illness. More comprehensive studies are needed to support lung cancer survivors and targeting of patients in need of special attention in rehabilitation that would benefit from the findings in the present study
Accuracy and acceptability of survivorship care plans: results of a pilot study
No full textSurvivorship treatment summaries and care plans are increasingly incorporated into cancer care but there are limited data on their accuracy and acceptability. We have evaluated written care plans developed as part of a once‐off, nurse‐led survivorship consultations across four medical oncology clinics in South Australia as part of a state‐wide pilot. While the accuracy of treatment summaries was high, level of detail in care plans was moderate to low, as was survivors' perception of plans' utility.No Full Tex
A quality improvement pilot to initiate treatment summaries and survivorship care plans in oncology services in South Australia
No full textAim:
To review, test and refine standardised tools for nurses to initiate treatment summaries and care plans, and identify barriers and enablers to providing them. Background:
This paper reports on a pilot study informed by the development of a Survivorship Framework in South Australia.
Methods:
Expression of interest was sought for adult medical oncology services to pilot standardised tools within existing services and resources. A quality improvement approach was used over three months with nurse practitioners and nurse practitioner candidates to obtain feedback, refine tools and resources, and identify barriers and enablers. Quantitative and qualitative data was recorded at each site using spreadsheets, at fortnightly meetings, and at a final debriefing. Content analysis was used to identify key themes in the context of barriers and enablers.
Findings:
Four medical oncology clinics in South Australia participated (three metropolitan, one regional). Forty-three consultations were delivered at three sites. Barriers included time to complete documentation, perceived knowledge and skills, re-orientation of clinics and referral pathways, competing service priorities and lack of administrative support. Enablers included interrelationships within and between pilot teams, supporting resources, and increased familiarity with tools.
Discussion and conclusion:
There is potential for nurses to initiate treatment summaries and care plans in the treatment setting with the use of standardised tools. Further refinements are needed to make the process less time burdensome, additional specialised training is needed to improve confidence of nurses to work in a wellness model, and numerous system challenges need to be overcome to improve overall feasibility of using standardised tools to provide survivorship support to patients. Lack of systems to populate information, and lack of referral processes to support survivorship discussions with patients are likely to limit the initiation of survivorship care in treatment settings in South Australia. Further nurse-led development of tools for treatment summaries and care plans should occur in parallel with translational research designed to address system challenges.
What is already known about this topic?
– Structured survivorship care is recommended to facilitate the individual follow-up needs, health and wellness of people treated for cancer. Many health services are grappling with the challenge of delivering survivorship care in a sustainable way. It is clear that embedding survivorship care routinely and at scale presents a significant implementation challenge for oncology services.
What this paper adds.
– Nurses are well placed to lead the initiation of treatment summaries and care plans, however, this pilot provides real-world insight into the system and practical challenges that need to be addressed to provide essential components of survivorship care in South AustraliaFull Tex
