140 research outputs found
KLUCZOWE KOMPETENCJE NA STANOWISKU LEŚNICZEGO NA PRZYKŁADZIE NADLEŚNICTWA ZAPOROWO
In the elaboration an attempt was made to analyse key competencies of a forest man. For this purpose, a questionnaire based on eight key competencies resulting from recommendations of the European Parliament and the Council of the European Union is developed. Key competencies include: communication in the mother tongue, communication in foreign languages, mathematical competencies and basic science and technology competencies, digital competencies, learning ability, social and civic competencies, sense of initiative, entrepreneurship, cultural awareness and expression. Surveys have been conducted among forest men in Zaporowo Forest District. On the basis of the data obtained, it has been concluded that mastery of most competencies at a good level testifies to large awareness and self-esteem of the respondents. At the same time, this offers the possibility of further development of employees, especially the development of their competencies concerning communication in a foreign language which in the future may contribute to the development of the organisation that is The State Forests National Forest Holding.We wstępie artykułu określono znaczenie podjętego tematu dla praktyki zarządzania. W rozdziale pierwszym dokonano przeglądu literatury w celu omówienia teoretycznych aspektów kompetencji. Następnie scharakteryzowano Nadleśnictwo Zaporowo, gdzie wśród leśniczych przeprowadzono badania ankietowe. Celem badania była próba ustalenia, które z kluczowych kompetencji posiadają pracownicy zatrudnieni na stanowisku leśniczego. Natomiast w kolejnym rozdziale omówiono metodykę postępowania badawczego i przedstawiono wyniki badań. Wnioski wynikające z analizy wyników przedstawiono w zakończeniu
Analysis of the impact of the fear of technology of warehouse employees on the level of their acceptance of work in an automated environment
PURPOSE: The purpose of this article is to present the results of the analysis of the impact of
the fear of the technology of warehouse workers on the level of their acceptance of work in an
automated environment.DESIGN/METHODOLOGY/APPROACH: The adopted method of examining the impact of the
technology fear of warehouse workers on the level of their acceptance of work in an automated
environment is influenced by 12 variables reflecting various areas of technology anxiety.
Statements regarding the studied variables were made on the basis of previously conducted
qualitative research and literature studies. The measuring tool in the study was a paper
questionnaire. The survey was conducted among warehouse employees of the company that is
a leader in handling e-commerce shipments in Poland.FINDINGS: It should be noted that the impact of the fear of the technology of warehouse workers
on the level of their acceptance of work in an automated environment is a relatively new. At
the same time a significant phenomenon, both in the cognitive and methodological sphere,
translates into the need to continue research contributing to the exploration of the problem
itself. Especially when one takes into account the dynamically developing trend of automation
and robotization of enterprises, which forces their clear demand for knowledge in the field of
adapting employees to work in an automated environment.ORIGINALITY/VALUE: The results of the analysis of the impact of the fear of the technology of
warehouse employees on the level of their acceptance of work in an automated environment
constitute an important construct for the development of a prototype of the assessment center
scenario. It allows for the identification of individual characteristics of employees in terms of
their predisposition to work in an automated environment.This paper was implemented with the funds of the project
„Development of a methodology for the implementation of automated solutions in warehouse
processes in the e-commerce industry taking into account the postulates of 3 RIS - Innovative
industry - Sustainable development”. Project no.: RPLB.01.01.00-08-0016/19.peer-reviewe
How thermal treatment affects the chemical composition and the physical, mechanical and swelling properties of Scots pine juvenile and mature wood
High variations in juvenile wood properties in the radial direction and its worse performance than mature wood make it less suitable for some applications and often treated as waste material. This study aimed to assess how thermal modification affects the chemical composition and the physical, mechanical and swelling properties of Scots pine juvenile and mature wood. An additional goal was to evaluate if the modification can equalise the differences in selected properties of juvenile wood to those of mature wood so that from waste material, juvenile wood can become a fully-fledged raw material for various industrial applications. Thermal treatment at 220 °C influenced wood chemical composition, degrading mainly hemicelluloses but also affecting cellulose and lignin, which resulted in a reduction of hydroxyls and carbonyl/carboxyl groups. These changes were more pronounced for mature than juvenile wood. It reduced mass loss and swelling rate, and increased swelling pressure in the tangential and radial directions to a higher degree for juvenile than mature wood. Changes in mechanical properties in compression were statistically significant only for mature wood, while wood hardness remained unaffected. Although the applied heat treatment improved the performance of juvenile wood by reducing its swelling rate, it did not equalise the examined properties between juvenile and mature wood. Since higher juvenile wood proportion is expected in the wood supply from the future intensively managed forests, there is still a need to find suitable modification methods or better processing techniques so that instead of being thrown away as waste, it could be used broadly in various industrial applications
Efficacy of Liming Forest Soil in the Context of African Swine Fever Virus
Since September 2020, Germany has experienced the first ever outbreak of African swine
fever (ASF). The first known cases occurred exclusively in wild boar in forest areas in Brandenburg
and Saxony; in July 2021, infected domestic pigs were also confirmed for the first time. As wild boar
are considered the main reservoir for the virus in the European region, an effective interruption of this
infection chain is essential. In particular, the removal and safe disposal of infected carcasses and the
direct disinfection of contaminated, unpaved ground are priorities in this regard. For the disinfection,
highly potent as well as environmentally compatible disinfectants must be used, which are neither
influenced in their effectiveness by the soil condition nor by increased organic contamination. Thus,
in this study, slaked lime, milk of lime and quicklime (1% to 10% solutions) were selected for efficacy
testing against the test virus recommended by the German Veterinary Society (DVG), Modified
Vaccinia Ankara virus (MVAV), and ASF virus (ASFV) in conjunction with six different forest soils
from Saxony in two different soil layers (top soil and mineral soil) each. In summary, 10% of any
tested lime type is able to inactivate both MVAV and ASFV under conditions of high organic load
and independent of the water content of the soil. At least a 4 log reduction of the virus titer in all
tested forest soil types and layers and by all applied lime types was observed. In conclusion, the high
efficacy and suitability of all tested lime products against both viruses and in the presence of high
organic load in forest soil can be confirmed and will help to control ASF spread
Mechanical parameters of thermally modified ash wood determined by compression in radial direction
Mechanical parameters of ash wood (Fraxinus excelsior) subjected to compression in radial direction, before and after its thermal modification and measured at moisture content close to the equilibrium moisture content of wood exposed in and outside (4 and 12%) were compared. Thermal modification of wood was performed at 190°C or 200°C for 2 h in industrial conditions. During the measurements, the moisture content of the modified and control samples was identical. The parameters compared included: modulus of elasticity, stress at proportionality limit, relative linear strain at proportionality limit and accumulated elastic energy. Changes in the mechanical parameters of wood induced by its thermal modification were found to depend on the modification temperature and wood moisture content
Mechanical parameters of thermally modified ash wood determined on compression in tangential direction
G
M
T
Detectar idioma
Afrikáans
Albanés
Alemán
Árabe
Armenio
Azerí
Bengalí
Bielorruso
Birmano
Bosnio
Búlgaro
Canarés
Catalán
Cebuano
Checo
Chichewa
Chino (Simp)
Chino (Trad)
Cincalés
Coreano
Criollo haitiano
Croata
Danés
Eslovaco
Esloveno
Español
Esperanto
Estonio
Euskera
Finlandés
Francés
Galés
Gallego
Georgiano
Griego
Gujarati
Hausa
Hebreo
Hindi
Hmong
Holandés
Húngaro
Igbo
Indonesio
Inglés
Irlandés
Islandés
Italiano
Japonés
Javanés
Jemer
Kazajo
Lao
Latín
Letón
Lituano
Macedonio
Malayalam
Malayo
Malgache
Maltés
Maorí
Maratí
Mongol
Nepalí
Noruego
Persa
Polaco
Portugués
Punjabí
Rumano
Ruso
Serbio
Sesoto
Somalí
Suajili
Sueco
Sundanés
Tagalo
Tailandés
Tamil
Tayiko
Telugu
Turco
Ucraniano
Urdu
Uzbeco
Vietnamita
Yidis
Yoruba
Zulú
Afrikáans
Albanés
Alemán
Árabe
Armenio
Azerí
Bengalí
Bielorruso
Birmano
Bosnio
Búlgaro
Canarés
Catalán
Cebuano
Checo
Chichewa
Chino (Simp)
Chino (Trad)
Cincalés
Coreano
Criollo haitiano
Croata
Danés
Eslovaco
Esloveno
Español
Esperanto
Estonio
Euskera
Finlandés
Francés
Galés
Gallego
Georgiano
Griego
Gujarati
Hausa
Hebreo
Hindi
Hmong
Holandés
Húngaro
Igbo
Indonesio
Inglés
Irlandés
Islandés
Italiano
Japonés
Javanés
Jemer
Kazajo
Lao
Latín
Letón
Lituano
Macedonio
Malayalam
Malayo
Malgache
Maltés
Maorí
Maratí
Mongol
Nepalí
Noruego
Persa
Polaco
Portugués
Punjabí
Rumano
Ruso
Serbio
Sesoto
Somalí
Suajili
Sueco
Sundanés
Tagalo
Tailandés
Tamil
Tayiko
Telugu
Turco
Ucraniano
Urdu
Uzbeco
Vietnamita
Yidis
Yoruba
Zulú
La función de sonido está limitada a 200 caracteres
Opciones : Historia : Feedback : Donate
CerrarMechanical parameters of ash wood (Fraxinus excelsior) subjected to compression in tangential direction, before and after its thermal modification and measured at the moisture content close to the equilibrium moisture content of wood used inside and outside the house, (4 and 12%) were compared. Thermal modification of wood was performed at 190°C and 200°C for 2 hours in industrial conditions. During the measurements, the moisture content of the modified and control samples was the same. The parameters compared included: modulus of elasticity, stress at proportionality limit, relative linear strain at proportionality limit and accumulated elastic energy. Thermal modification of ash wood at 190°C contributed to the deterioration of its mechanical parameters determined during compression in tangential direction; the deterioration was greater for wood tissue of higher moisture content. The values of mechanical parameters of thermally modified wood (except for elastic energy), determined in compression test in tangential direction, decrease with the its increasing moisture more than for the control wood
Pressure support ventilation attenuates ventilator-induced protein modifications in the diaphragm
OnLine Journal Article Number : R116 The electronic version of this article is the complete one and can be found online at: http://ccforum.com/content/12/5/R116International audienceINTRODUCTION: Controlled mechanical ventilation (CMV) induces profound modifications of diaphragm protein metabolism, including muscle atrophy and severe ventilator-induced diaphragmatic dysfunction. Diaphragmatic modifications could be decreased by spontaneous breathing. We hypothesized that mechanical ventilation in pressure support ventilation (PSV), which preserves diaphragm muscle activity, would limit diaphragmatic protein catabolism. METHODS: Forty-two adult Sprague-Dawley rats were included in this prospective randomized animal study. After intraperitoneal anesthesia, animals were randomly assigned to the control group or to receive 6 or 18 hours of CMV or PSV. After sacrifice and incubation with 14C-phenylalanine, in vitro proteolysis and protein synthesis were measured on the costal region of the diaphragm. We also measured myofibrillar protein carbonyl levels and the activity of 20S proteasome and tripeptidylpeptidase II. RESULTS: Compared with control animals, diaphragmatic protein catabolism was significantly increased after 18 hours of CMV (33%, P = 0.0001) but not after 6 hours. CMV also decreased protein synthesis by 50% (P = 0.0012) after 6 hours and by 65% (P < 0.0001) after 18 hours of mechanical ventilation. Both 20S proteasome activity levels were increased by CMV. Compared with CMV, 6 and 18 hours of PSV showed no significant increase in proteolysis. PSV did not significantly increase protein synthesis versus controls. Both CMV and PSV increased protein carbonyl levels after 18 hours of mechanical ventilation from +63% (P < 0.001) and +82% (P < 0.0005), respectively. CONCLUSIONS: PSV is efficient at reducing mechanical ventilation-induced proteolysis and inhibition of protein synthesis without modifications in the level of oxidative injury compared with continuous mechanical ventilation. PSV could be an interesting alternative to limit ventilator-induced diaphragmatic dysfunction
Recommended from our members
Hepatic proteome analysis reveals altered mitochondrial metabolism and suppressed acyl-CoA synthetase-1 in colon-26 tumor-induced cachexia
Cachexia is a life-threatening complication of cancer traditionally characterized by weight loss and muscle dysfunction. Cachexia, however, is a systemic disease that also involves remodeling of nonmuscle organs. The liver exerts major control over systemic metabolism, yet its role in cancer cachexia is not well understood. To advance the understanding of how the liver contributes to cancer cachexia, we used quantitative proteomics and bioinformatics to identify hepatic pathways and cellular processes dysregulated in mice with moderate and severe colon-26 tumor-induced cachexia; ~300 differentially expressed proteins identified during the induction of moderate cachexia were also differentially regulated in the transition to severe cachexia. KEGG pathway enrichment revealed representation by oxidative phosphorylation, indicating altered hepatic mitochondrial function as a common feature across cachexia severity. Glycogen catabolism was also observed in cachexic livers along with decreased pyruvate dehydrogenase protein X component (Pdhx), increased lactate dehydrogenase A chain (Ldha), and increased lactate transporter Mct1. Together this suggests altered lactate metabolism and transport in cachexic livers, which may contribute to energetically inefficient interorgan lactate cycling. Acyl-CoA synthetase-1 (ACSL1), known for activating long-chain fatty acids, was decreased in moderate and severe cachexia based on LC-MS/MS analysis and immunoblotting. ACSL1 showed strong linear relationships with percent body weight change and muscle fiber size (R2 = 0.73–0.76, P < 0.01). Mitochondrial coupling efficiency, which is compromised in cachexic livers to potentially increase energy expenditure and weight loss, also showed a linear relationship with ACSL1. Findings suggest altered mitochondrial and substrate metabolism of the liver in cancer cachexia, and possible hepatic targets for intervention
A General Method for Targeted Quantitative Cross-Linking Mass Spectrometry
Chemical cross-linking mass spectrometry (XL-MS) provides protein structural information by identifying covalently linked proximal amino acid residues on protein surfaces. The information gained by this technique is complementary to other structural biology methods such as x-ray crystallography, NMR and cryo-electron microscopy[1]. The extension of traditional quantitative proteomics methods with chemical cross-linking can provide information on the structural dynamics of protein structures and protein complexes. The identification and quantitation of cross-linked peptides remains challenging for the general community, requiring specialized expertise ultimately limiting more widespread adoption of the technique. We describe a general method for targeted quantitative mass spectrometric analysis of cross-linked peptide pairs. We report the adaptation of the widely used, open source software package Skyline, for the analysis of quantitative XL-MS data as a means for data analysis and sharing of methods. We demonstrate the utility and robustness of the method with a cross-laboratory study and present data that is supported by and validates previously published data on quantified cross-linked peptide pairs. This advance provides an easy to use resource so that any lab with access to a LC-MS system capable of performing targeted quantitative analysis can quickly and accurately measure dynamic changes in protein structure and protein interactions
- …