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Tytuł:
Unfair commercial practices in the food supply chain
Autorzy:
Cazorla González, María José
Powiązania:
https://bibliotekanauki.pl/articles/29995106.pdf
Data publikacji:
2023-01-27
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
unfair commercial practices
agri-food chain
bargaining power
nieuczciwe praktyki handlowe
łańcuch rolno-spożywczy
siła przetargowa
Opis:
The aim of this article was to provide an overview of unfair market practices in the food supply chain. In order to achieve this objective relevant European Union and Spanish legal provisions were analysed. Next, successive stages of the agri-food chain and the legal forms of the protection of competition at each of these stages have been presented, followed by a postulate to implement at each of them legislative and fiscal measures that would increase the competitiveness of food producers. In this way agricultural associations could achieve a higher degree of integration and in consequence increase the bargaining power in the market, strengthening their position in the food chain.
Celem rozważań jest przybliżenie problematyki nieuczciwych praktyk rynkowych w łańcuchu dostaw żywności. Aby zrealizować tak określony cel, analizie poddane zostało prawodawstwo Unii Europejskiej oraz hiszpańskie. Autorka zaprezentowała poszczególne etapy łańcucha rolno-żywnościowego i prawne formy ochrony konkurencji na każdym z nich. Według autorki na każdym z tych etapów producenci żywności powinni być wspierani środkami legislacyjnymi i fiskalnymi, które zwiększają ich konkurencyjność, co z kolei przekłada się na wyższy niż dotychczas stopień integracji w ramach stowarzyszeń rolniczych. W ten sposób wzrasta siła przetargowa producentów na rynku, a jednocześnie wzmocnieniu ulega ich pozycja w stosunku do innych uczestników łańcucha żywnościowego.
Źródło:
Przegląd Prawa Rolnego; 2022, 2(31); 179-207
1897-7626
2719-7026
Pojawia się w:
Przegląd Prawa Rolnego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interface of organisational ageing and organisational ecology theory
Autorzy:
Vargas-Hernández, José G.
Rakowska, Joanna
Vargas-González, M. C. Omar C.
Powiązania:
https://bibliotekanauki.pl/articles/11364551.pdf
Data publikacji:
2022-09-30
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
organisational ecology
organisational aging
organisation change
organisation theory
Opis:
The study aimed to conclude on the up-to-date state of the organisational ecology theory concerning relations between organisational ageing and organisational ecology, enhanced by social and ecological systems and ecological management. The applied method included analytical and reflective concluding, based on the synthesis of findings from a critical literature review. It was concluded that: (i) organisational ageing generates some of the most important consequences in organisational ecology; however, there is still no consensus on what kind of consequences prevail; (ii) at population level, the adaptation of organisational structures occurs with the replacement of old organisations that fail to adapt by the new ones; (iii) under the prevalent backdrop of radical structural and strategic changes, individual organisations are subject to inertial forces and thus are confronted with limitations to their success; (iv) ageing has positive consequences for innovative activities of older companies; and (v) the higher the density and concentration of industry, the higher the rates of founding firms and the lower the rates of mortality.
Źródło:
Marketing Instytucji Naukowych i Badawczych; 2022, 45, 3; 57-70
2353-8414
Pojawia się w:
Marketing Instytucji Naukowych i Badawczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nuevo aporte al conocimiento sobre la redacción del control δ de las ánforas dressel 20 del Monte Testaccio en la modificación antoniniana: el refrendo en δ de la cifra escrita en la posición α
New Contribution to the Knowledge on the Composition of control δ of the Dressel 20 Amphoras of the Monte Testaccio in the Antoninian Modification: The Endorsement in δ of the Number Written in the Position α
Autorzy:
Pérez González, Jordi
Heredero Berzosa, Javier
Aguilera Martín, Antonio José
Powiązania:
https://bibliotekanauki.pl/articles/2230801.pdf
Data publikacji:
2022-12-16
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
amfora rzymska
rzymska ekonomia
epigrafika łacińska
tituli picti
delta
Dressel 20
Roman amphora
Roman economy
Latin epigraphy
ánfora romana
economía romana
epigrafía latina
Opis:
Within the complex system that once formed part of the epigraphic ensemble that accompanied these amphorae, we highlight the particular study of the painted marks known as tituli picti in the delta position of the olive oil amphorae from Baetica, Dressel 20. Here we address a singular fact, only detectable through the visualization of large data sets, indicating the existence of the endorsement in delta of the amount expressed in alpha throughout the years of the Antonine reform. If until now it was believed to be something fortuitous, or a scribeʼs error, now it could be considered, due to its structure and the cases exposed, a regulated script.
Źródło:
Collectanea Philologica; 2022, 25; 129-148
1733-0319
2353-0901
Pojawia się w:
Collectanea Philologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimized Extraction, Microencapsulation, and Stability of Anthocyanins from Ardisia compressa K. Fruit
Autorzy:
Antonio-Gomez, Maria V.
Salinas-Moreno, Yolanda
Hernández-Rosas, Francisco
Martínez-Bustos, Fernando
Andrade-González, Isaac
Herrera-Corredor, José A.
Powiązania:
https://bibliotekanauki.pl/articles/1417206.pdf
Data publikacji:
2021-08-20
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
Ardisia compressa K
tropical fruit
microcapsules
anthocyanins
spray drying
Opis:
The fruit of Ardisia compresssa K. is called chagalapoli and has a high anthocyanin content, with a profile dominated by malvidin derivatives. The aims of this study were: a) to determine optimal conditions (ethanol concentration, pH, and sonication time) for anthocyanin extraction from chagalapoli fruit (CF) using response surface methodology, b) to perform spray-drying microencapsulation of the anthocyanins using mixtures of polysaccharides (maltodextrin – M and Capsul® – C) as wall materials, and c) to evaluate the stability of microcapsules during storage. Of the variables examined to optimize anthocyanin extraction from CF, only ethanol concentration and pH were significant in the model. The optimal extraction conditions were: 63.5% (v/v) ethanol, pH of 2.0, and sonication time of 30 min, which led to an anthocyanin content of 1545 mg malvidin 3-O-galactoside equivalents/100 g of fresh fruit. The proportion of M/C as the wall materials for microcapsule (MC) preparation did not affect the encapsulation efficiency and anthocyanin retention, but high hygroscopicity was observed in the MC with a high proportion of M. The half-life of the MC ranged from 423 to 519 days, and no effect of wall materials was observed. The color stability of the MC was enhanced by increasing C proportion in wall materials. The high stability of microencapsulated anthocyanins of chagalapoli fruit makes it a suitable option as a food colorant.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2021, 71, 3; 299-310
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic analysis of the influence of potassium on the thermal behavior of kaolin raw material
Autorzy:
Hernández-Chávez, Macaria
Vargas-Ramírez, Marissa
Herrera-González, Ana Maria
García-Serrano, Jesús
Cruz-Ramírez, Alejandro
Romero-Serrano, José Antonio
Sánchez-Alvarado, Ricardo Gerardo
Powiązania:
https://bibliotekanauki.pl/articles/1448343.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
kaolin
thermal treatment
thermodynamic analysis
viscosity
Opis:
The mineralogy and thermal properties of two kaolin clay samples from Agua Blanca (Hidalgo-México) were determined by XRD, SEM-EDS, TGA-DSC techniques. Kaolin clay A contains a higher $Al_2O_3$ and lower impurities $(K_2O, TiO_2, Fe_2O_3)$ amount than kaolin clay B, while the SiO2 amount is similar for both kaolin clays. A theoretical approach was carried out by a thermodynamic analysis considering the chemical composition of both kaolin clay samples with the FactSage 7.3 software. Stability phase diagrams were obtained to different K2O content from 0.1 to 3 wt % and temperatures in the range from 600 to 1600°C based on the chemical composition of the kaolin clay samples. The main mineralogical compounds predicted are andalusite $(Al_2O_3•SiO_2)$, K-Potash feldspar $(K_2O•Al_2O_3•6SiO_2)$, and the $SiO_2$ polymorphs (quartz, tridymite, and cristobalite) with small amounts of ferric-pseudobrookite $(Fe_2O_5Ti)$, and rutile $(TiO_2)$. As $K_2O$ content is increased, the amounts of mullite and tridymite decrease meanwhile the potash feld spar is increased at high temperatures. A liquid phase is formed at around 1350 and 1400°C for the kaolin clay samples A and B, respectively. The viscosity of the melt is increased for the evaluated $K_2O$ additions to 1400, 1500, and 1600°C.
Źródło:
Physicochemical Problems of Mineral Processing; 2021, 57, 1; 39-52
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A methodology to estimate permeability in porous and fissured rock specimens at laboratory scale
Autorzy:
Estevez-Ventosa, Xian
Gonzalez-Molano, Nubia Aurora
Blazquez-Pascual, Vanesa
Alverellos, Jose
Alejano, Leandro R.
Powiązania:
https://bibliotekanauki.pl/articles/1853852.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
przepuszczalność
skała
test laboratoryjny
permeability
artificially jointed rock
lab tests
Opis:
The correct management of underground works, petroleum and gas reservoirs and geothermal appli-cations relies on the hydromechanical behaviour of rock masses. We describe a laboratory approach to measuring permeability for different types of rock specimens. A laboratory system was designed and set up using rock mechanics equipment (a servo-controlled hydraulic press, a Hoek cell, a pump for injecting water and a scale for measuring the volume of water flow). To verify the validity of the permeability measurements, tests were carried out on a reference porous rock (Corvio sandstone), with results showing good agreement with those published in the literature. Tests were subsequently carried out on artificially fissured granite specimens with different joint patterns, submitted to various confinement stresses up to 20 MPa. Results showed good agreement with traditional Klinkenberg test results. Other tests done with artificially fissured specimens are described for demonstrative purposes.
Źródło:
Archives of Mining Sciences; 2020, 65, 4; 821-833
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Legal analysis of the management of harvest residues in South-West Europe
La gestione dei residui colturali nell’Europa sudoccidentale: un’analisi giuridica
Autorzy:
Cazorla González, María José
Powiązania:
https://bibliotekanauki.pl/articles/926130.pdf
Data publikacji:
2020-12-21
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
ambiente
agricoltura
direttiva sui rifiuti
riciclaggio
recupero
serre
environment
agriculture
waste directive
recycling
recovery
greenhouses
Opis:
The Waste Directive establishes the basic principles of waste management, but it does not regulate issues relating to crop residues that remain on the farm, which creates a legal vacuum at the level of European Union law. In this situation, Member States are obliged to respond to problems arising from certain types of production. The article presents the current situation in this area in south-western Europe, where, due to the seasonal nature of production, crop residues arise at certain times of year. As we know, the common agricultural policy promotes the sustainable development of agriculture in relation to production carried out on European territory, which is why, according to the author, it is necessary to introduce appropriate legal regulations. The proper use and management of these residues by farmers may contribute to the improvement of their income which is consistent with the principles of circular management as part of the valorisation of these harvest residues.
La direttiva sui rifiuti stabilisce i principi di base per la gestione degli stessi, ma non disciplina le questioni riguardanti i residui del raccolto rimasti nell’azienda agricola, il che crea un vuoto giuridico a livello di diritto dell’Unione europea. Per cui, gli Stati membri sono obbligati a reagire ai problemi derivanti da alcuni tipi di produzione. Al riguardo, l’articolo presenta la situazione attuale nell’Europa sudoccidentale, in cui – a causa della stagionalità della produzione – si formano residui di raccolto in determinati periodi dell’anno. Come noto, la politica agricola comune promuove lo sviluppo sostenibile dell'agricoltura in relazione alle produzioni realizzate sul territorio europeo. Pertanto, secondo l’Autrice, è necessario introdurre regolazioni giuridiche adeguate. Un corretto utilizzo e gestione dei residui in oggetto da parte degli agricoltori potrebbe contribuire ad accrescere il loro reddito, in coerenza con i principi dell’economia circolare portando alla valorizzazione dei residui stessi.
Źródło:
Przegląd Prawa Rolnego; 2020, 2(27); 207-226
1897-7626
2719-7026
Pojawia się w:
Przegląd Prawa Rolnego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ASSESSMENTS OF ANTIOXIDANT CONTENT AND THE ANTI-CARCINOGENIC EFFECT OF EXTRACTS OF SOLANUM ROSTRATUM DUNAL IN HUMAN CANCER CELLS
Autorzy:
Valadez Vega, María del Carmen
Izquierdo Vega, Jeannett Alejandra
Villagómez Ibarra, Jose Roberto
Sánchez Gutiérrez, Manuel
Madrigal Santillán, Eduardo Osiris
Morales Gonzalez, Jose Antonio
Bautista Ávila, Mirandeli
García Velasco, Laura
Powiązania:
https://bibliotekanauki.pl/articles/895384.pdf
Data publikacji:
2019-06-28
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
antioxidant
cytotoxic
Solanum rostratum
SiHa cell line
MDA cell line
Opis:
In Mexico, Solanum rostratum has been employed for the treatment of several diseases, including uterine cancer. The aim of this study was to evaluate the antioxidant and anti-carcinogenic activity of extracts of Solanum rostratum Dunal on MDA and SiHa cell lines. The methanolic, ethyl acetate, and hexane extracts of the aerial parts of Solanum rostratum were tested for phenols concentration, antioxidant activity, and anti-carcinogenic effect. The leaves extracts showed the highest content of phenols; however the flower-fruits extracts showed higher scavenging activity. On the other hand, ethyl acetate extracts exhibited the highest anti-carcinogenic effect, while methanolic extracts showed the least effect. The results of this work indicated that Solanum rostratum is a promising source of antioxidants, and the extracts exert a dose-dependent anti-carcinogenic effect on both cell lines.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 493-502
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Austerity policies in the Eurozone: How they affect youth unemployment?
Autorzy:
Díaz-Roldán, Carmen
Parada-Rodríguez, José Luis
Carmona-González, Nieves
Powiązania:
https://bibliotekanauki.pl/articles/14426269.pdf
Data publikacji:
2019-06-26
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
Monetary unions
fiscal consolidation
sustainable policies
youth unemployment.
Opis:
Aim: Analyse the effects of stabilization policies on youth unemployment, using government deficit besides the use of fiscal policy by the supply side; aimed to characterize the economic framework conditions under which fiscal policy could reduce youth unemployment.   Design/Research methods: We consider an economic framework featuring the use of monetary and fiscal rules within a monetary union. In this scenario, that should be representative of the Eurozone, we will analyse the effects of stabilization policies when dealing with a financial crisis which produces contractive effects on output and on employment. We will pay special attention to the conservativeness of the central bank, the degree of austerity of the fiscal authorities and the initial level of government debt. Those characteristics prove to be crucial for the sustainability of economic policies packages based on fiscal consolidation and the use of fiscal policy instruments by the supply side, when trying to deal with unemployment. And given that in the financial crisis effects have been hit Eurozone countries in a different manner, we will also differentiate monetary union’s member countries according with their government debt and their unemployment path.   Conclusions/findings: Fiscal authorities should be no austere for fighting youth unemployment, when using fiscal policy by the supply side. In other words, when optimizing their loss function, they should give more weight to the output stabilization goal that to the government deficit reduction.  Originality/value of the article: Allowing for the use of both monetary and fiscal policy rules, in the scenario of a monetary union, our results could help us to stablish the conditions under which fiscal policy could help to alleviate youth unemployment.
Źródło:
Central European Review of Economics and Management; 2019, 3, 2; 7-20
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Catechins from Smilax domingensis Willd. in Cuba
Autorzy:
Soledispa, Pilar A.
González, José
Cuéllar, Armando
Pérez, Julio
Monan, Max
Powiązania:
https://bibliotekanauki.pl/articles/1077467.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
GC/MS
Smilax domingensis
catechins
ethanolic extract
flavanols
Opis:
Gas Chromatography coupled with mass spectrometry was applied to study the fragmentation of selected flavonoids from the ethanolic extract of Smilax domingensis Willd., Smilacaceae, known as zarzaparrilla, after Soxhlet extraction during 20 hours. Compounds belonging to one of the major subgroups found in common plants, i.e. flavanols were studied. Following solvent extraction and derivatization using BSTFA, possibly two different metabolites from the same chemical group were characterized in one analytical run: (+)-catechin and (-)-epicatechin. For the very first time, qualitative data on these analytes in the drug were determined after detailed validation of a sensitive, cheap and reliable GC-MS method.
Źródło:
World News of Natural Sciences; 2019, 23; 297-305
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical characterization by TLC, UV, IR, HPLC-MS/MS and NMR of gossypetin-3’-O-glucoside from Talipariti elatum (Sw.) Malvaceae
Autorzy:
González, José
Cuéllar, Armando
Gaysinski, Marc
Massi, Lionel
Monan, Max
Nossin, Enmanuel
François-Haugrin, Frantz
Powiązania:
https://bibliotekanauki.pl/articles/1076714.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
IR
MS
NMR
TLC
Talipariti elatum
UV
flavonoids
Opis:
Talipariti elatum (Sw.) Malvaceae, also known as Blue Mahoe or Mountain Mahoe, commonly named as Majagua azul or Majagua, with red or crimson flowers, is a medicinal tree traditionally used against cough, asthma, catarrh, and expectorant. Its flowers contain a lot different chemical compounds, mainly flavonoids. From red petals of the flowers a flavonol glucoside was isolated and characterized by TLC, UV, IR, HPLC-MS/MS and NMR spectroscopy. Structure analyses of that chemical component revealed that It have the identical glucoside moiety attached to a flavonol skeleton like gossypitrin (gossypetin-7-O--glucoside) but in different position for which the structure of gossypetin-3’-O-glucoside was deduced from HSQC, HMBC, COSY and NOESY correlations.
Źródło:
World News of Natural Sciences; 2019, 24; 100-116
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of personal variables on entrepreneurial intention: a comparative study between Poland and Spain
Autorzy:
Martínez-González, José Alberto
Kobylińska, Urszula
Powiązania:
https://bibliotekanauki.pl/articles/125613.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
entrepreneurial intention (EI)
self-efficacy
motivation
enterprising attitude
value
zamiar przedsiębiorczy (EI)
poczucie własnej skuteczności
motywacja
postawa przedsiębiorcza
wartość
Opis:
This article analyses the influence of personal variables on entrepreneurial intentions of students from Poland and Spain. The article presents an integrated structural model that has been developed from a set of student perceptions from both countries. A small number of variables included in the model allows explaining and managing the formation of the intention in the context of higher education. This study provides answers to the following questions: What role do personal variables play as motivation in the formation of entrepreneurship in the case of young people? Is the motivation stronger than self-efficacy? What are the differences in the perceptions and ratings of students in Poland and Spain? How can these variables be enhanced? This work used a causal quantitative methodology based on structural equations (PLS) and the Smart PLS-3.0 program. The PLS model was chosen for its advantages in the study of human behaviour and its optimal predictive potential, and because it allows the use of reflective indicators. In the causal model generated with a sample of 721 respondents from Poland and Spain, it was found that personal values initiated the chain of effects that influenced the attitude and, through it, successively resulted in motivation, selfefficacy and entrepreneurial intentions. Therefore, the subjective variables (values and attitudes) have a positive and significant influence on the action variables (motivation and self-efficacy), and these affect entrepreneurial intentions. The absence of significant regional differences in the responses to the items and the causal relationships of the model suggests the possibility of developing integrated and homogeneous programmes for the entire segment, thereby achieving synergies. The results suppose a theoretical and practical contribution to the promotion of entrepreneur intentions of university students inside and outside the educational context, suggesting a possible effect of personal variables on entrepreneurial intentions.
Źródło:
Engineering Management in Production and Services; 2019, 11, 1; 68-79
2543-6597
2543-912X
Pojawia się w:
Engineering Management in Production and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neurological complications and quality of life after submandibular gland resection. A Prospective, non-randomized, single-centre study
Autorzy:
Chiesa Estomba, Carlos
Valldeperes-Vilanova, Ariadna
González-García, Jose
Larruscain-Sarasola, Ekhiñe
Sistiaga-Suarez, Jon
Altuna-Mariezcurrena, Xabier
Powiązania:
https://bibliotekanauki.pl/articles/1397732.pdf
Data publikacji:
2019
Wydawca:
Index Copernicus International
Tematy:
neurological complications
salivary gland
submandibular gland
surgery
Opis:
Introduction: There are different complications related to the submandibular gland resection, like damage to the mandibular branch of the facial nerve, lingual or hypoglossal nerve. Moreover, subjective complaints like dry mouth, altered sensation around the scar and taste alterations were described. Patients and methods: A prospective, non-randomized study was performed including 20 patients treated with submandibular gland resection. Results: The most common etiology was sialolithiasis affecting 9 (45%) patients. One (5%) patient presented a lingual nerve paresis, 2 (10%) patients presented a transient marginal mandibular branch paresis and no hypoglossal nerve alteration was observed. Factors like the size of the lithiasis (P = 0.293), size of the tumor (P = 0.445) or type of pathology (P = 0.694) were not related with neurological complications. Altered sensation in the skin around a scar was the most severely weighted problem (55% and 33.3%), and xerostomia was the second one (33% and 27.3%) at one month and at six months after surgery, respectively. Conclusion: The submandibular gland resection remains to be a safe technique with a low rate of surgical and neurological complications. However, patients should be informed about sequelae like xerostomia, altered sensation in the skin or pain around the scar, which may be discomforting. The cosmetic result can be satisfactory, but a surgical scar can be avoided with another approach. Although rare, the risk of MBFN, lingual and hypoglossal nerve damage should always be included in the preoperative information on surgical risks.
Źródło:
Polish Journal of Otolaryngology; 2019, 73, 6; 32-37
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie oceny oddziaływania drgań wzbudzanych robotami strzałowymi przy użyciu normy polskiej i hiszpańskiej
Comparison of the ground-born vibration assessment according to Polish and Spanish standard
Autorzy:
Pyra, Józef
Biessikirski, Andrzej
González Ortego, Jose Luis
Powiązania:
https://bibliotekanauki.pl/articles/164989.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:
drgania parasejsmiczne
ocena oddziaływania
PN-B-02170:2016-12
UNE 22.381/93
ground-born vibration
evaluation of the ground born-vibration
Opis:
W pracy przedstawiono analizę oddziaływania drgań, wzbudzanych wykonywaniem robót strzałowych w kopalniach odkrywkowych, w oparciu o normę polską oraz hiszpańską. Omówiono założenia norm oraz sposób prowadzenia analizy. Zauważono, że ocena oddziaływania w normie hiszpańskiej polega na naniesieniu na skalę maksymalnych wartości prędkości drgań w zależności od ich częstotliwości, zaś w normie polskiej zdarzenia poddaje się analizie w pasmach 1/3 oktawowych. Uzyskane rezultaty rozpatrywano dla dwóch przypadków obiektu architektonicznego oraz budynku w dobrym stanie technicznym. W przypadku budynku w dobrym stanie technicznym wyniki uzyskane na podstawie oceny oddziaływania względem obydwu norm wykazały, że rejestrowane drgania były nieszkodliwe dla konstrukcji. Gdy przyjęto, że obiekt chroniony był obiektem architektonicznym uzyskano przeciwstawną interpretację oceny. Różnica w ocenie wynikała z różnych dopuszczalnych wartości prędkości, określających możliwość wystąpienia uszkodzenia.
The evaluation of ground-born vibrations, induced by the blasting works, was made according to Polish and Spanish standard. Moreover standards assumption and construction were discussed in this paper. It was noted that evaluation of the vibrations according to Spanish standard consists on applying the peak particle velocity on the scale, while in the Polish standard vibrations have to be assess by the octave analysis. Obtained results were considered in two different cases as an architectural object and as a structure in a good technical condition. In the case of a building in a good condition, obtained results according to Polish and Spanish standard showed that recorded vibrations were harmless to the structure. In case of architectural object, a different interpretation was obtained. It was resulted from various permissible velocity values which determining the possible presence of damage.
Źródło:
Przegląd Górniczy; 2019, 75, 6; 1-8
0033-216X
Pojawia się w:
Przegląd Górniczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Powikłania neurologiczne i jakość życia po resekcji ślinianki podżuchwowej. Prospektywne, nierandomizowane badanie jednoośrodkowe
Autorzy:
Chiesa Estomba, Carlos
Valldeperes-Vilanova, Ariadna
González-García, Jose
Larruscain-Sarasola, Ekhiñe
Sistiaga-Suarez, Jon
Altuna-Mariezcurrena, Xabier
Powiązania:
https://bibliotekanauki.pl/articles/1397777.pdf
Data publikacji:
2019
Wydawca:
Index Copernicus International
Tematy:
gruczoł podżuchwowy
operacja
powikłania neurologiczne
ślinianka
Opis:
Wprowadzenie: Resekcja ślinianki podżuchwowej wiąże się z powikłaniami, takimi jak uszkodzenie gałęzi brzeżnej żuchwy nerwu twarzowego, nerwu językowego czy podjęzykowego. Poza nimi, w niniejszej pracy opisano subiektywne dolegliwości: suchość w jamie ustnej, parestezje w okolicy blizny czy zmianę smaku. Pacjenci i metody: Przeprowadzono prospektywne, nierandomizowane badanie z udziałem 20 pacjentów poddanych zabiegowi usunięcia ślinianki podżuchwowej. Wyniki: Najczęstszą przyczyną zabiegu była kamica ślinianki – dotyczyła ona 9 osób (45%). Jeden z pacjentów (5%) miał porażenie nerwu językowego, u dwóch (10%) stwierdzono przejściowe porażenie gałęzi brzeżnej żuchwy, nie zarejestrowano zaś żadnego przypadku zmian w nerwie podjęzykowym. Powikłania neurologiczne nie miały związku z: wielkością kamieni śliniakowych (p = 0,293), rozmiarem guza (p = 0,445) czy rodzajem zmiany patologicznej (p = 0,694). Największym problemem zarówno po miesiącu, jak i po 6 miesiącach po zabiegu, były parestezje w okolicy blizny (odpowiednio: 55% i 33%), a na drugim miejscu uplasowała się kserostomia, czyli suchość błony śluzowej jamy ustnej (33% i 27,3%). Wnioski: Resekcja ślinianki podżuchwowej to zabieg bezpieczny, o niskim ryzyku powikłań chirurgicznych czy neurologicznych. Mimo to pacjenci powinni zostać poinformowani o możliwych powikłaniach, takich jak: suchość w jamie ustnej oraz parestezje w okolicy blizny. Efekt kosmetyczny może być zadowalający, a blizny można uniknąć stosując odpowiednią technikę operacyjną. Mimo że ryzyko uszkodzenia MBFN, nerwu językowego i podjęzykowego jest niskie, należy uwzględnić je w informacjach o zabiegu przekazywanych pacjentowi przed operacją.
Źródło:
Polish Journal of Otolaryngology; 2019, 73, 6; 32-37
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 40

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