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Tytuł:
Phenolic Compounds in Agro-Industrial Waste of Mango Fruit: Impact on Health and Its Prebiotic Effect – a Review
Autorzy:
Nicolás García, Mayra
Borrás Enríquez, Anahí J.
González Escobar, Jorge L.
Calva Cruz, Oscar D.
Pérez Pérez, Viridiana
Sánchez Becerril, Mayra
Powiązania:
https://bibliotekanauki.pl/articles/16538530.pdf
Data publikacji:
2023-02-21
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
mango processing
mango wastes
phytochemicals
biological properties
gut health
Opis:
The fruit processing industry generates huge amounts of waste annually, causing severe environmental problems. Mango processing produces around 20 million tons of wastes from the non-consumed fraction, mainly peels and seeds, which constitute 30–60% of the fruit weight. However, various phytochemicals found in these residues have been implicated in preventing cancer and also cardio-metabolic and gastrointestinal diseases. Particularly, phenolic compounds hold a promising potential to be utilized as modulatory agents of the human gut microbiota (prebiotics-like actions). This review article mainly discusses the effect of phenolics from mango wastes on gut microbiota modulation and its beneficial repercussions for human health. Moreover, it also discusses the importance of phenolic compounds of mango peel and seed kernel residues, their extraction, identification, and quantification.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 1; 5-23
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Migration Coverage in Europe, Russia and the United States
Autorzy:
Kreutler, Marcus
Fengler, Susanne
Asadi, Nastaran
Bodrunova, Svetlana
Budivska, Halyna
Diop, Layire
Ertz, Georgia
Gigola, Daria
Katus, Eszter
Kovacs, Denisa
Kuś, Michał
Láb, Filip
Litvinenko, Anna
Mack, Johanna
Maier, Scott
Pinto Martinho, Ana
Matei, Antonia
Miller, Kaitlin C.
Oppermann, Lisa
Pérez Vara, Eva
Polyák, Gábor
Ravisankar, Rajeev
Rodríguez Pérez, Carlos
Semova, Dimitrina J.
Skleparis, Dimitris
Splendore, Sergio
Štefaniková, Sandra
Szynol, Adam
Telo, Décio
Zguri, Rrapo
Powiązania:
https://bibliotekanauki.pl/articles/2152496.pdf
Data publikacji:
2022-09-22
Wydawca:
Polskie Towarzystwo Komunikacji Społecznej
Tematy:
comparative analysis
journalism
migration
refugee
media coverage
Opis:
Six years after the so-called ‘refugee crisis’ in 2015, the European Union remains divided on questions of migration and asylum policy. The issue also remains high on the agendas of the USA and Russia, two other key destination countries with immigration from Latin America and the Post-Soviet space. This article presents results from a comparative study of news coverage in 17 countries, focusing on 10 EU member states in Western and Central Eastern Europe (CEE), the USA and Russia. The intensity of coverage was remarkably different, with Hungary’s and Germany’s media standing out while Russian media displayed relatively low levels of coverage. Individual migrants and refugees were most visible in the two outlets from the USA. Media in CEE countries tended towards a more critical approach than media in Western Europe. However, differences between most countries’ pairs of analyzed media outlets indicate a more pluralistic debate than frequently assumed.
Źródło:
Central European Journal of Communication; 2022, 15, 2(31); 202-226
1899-5101
Pojawia się w:
Central European Journal of Communication
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
En bloc liver and pancreas transplantation after total pancreatectomy with autologous islet transplantation
Autorzy:
Generette, Gabriela S.
Bachul, Piotr J.
Golab, Karolina
Basto, Lindsay
Pyda, Jordan S.
Borek, Peter
Tibudan, Martin
Anteby, Roi
Perea, Laurencia
Charlton, Michael
Perez-Gutierrez, Angelica
Jayant, Kumar
Lucander, Aaron
Matthews, Jeffrey B.
Millis, J. Michael
Fung, John
Witkowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1196139.pdf
Data publikacji:
2020-11-23
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
Total Pancreatectomy with Autologous Islet Transplantation
TPIAT
liver and pancreas transplantation
chronic pancreatitis
Opis:
We present a patient with intractable and debilitating pain secondary to chronic pancreatitis who was effectively treated with total pancreatectomy with islet autotransplantation (TPIAT). Islets engrafted into his liver significantly contributed to improved blood glucose control and quality of life. Subsequently, the patient developed alcohol related acute liver failure and en bloc liver and pancreas transplantation was performed to replace the failing liver with engrafted islets. Pancreas transplantation was required to resolve his life-threatening severe hypoglycemic episodes. Herein, we detail an innovative and multidisciplinary management of this complex medical problem.
Źródło:
European Journal of Translational and Clinical Medicine; 2020, 3, 2; 11-17
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radon measurements in groundwater mines in La Palma and El Hierro, Canary Islands (Spain)
Autorzy:
Santamarta, Juan C.
Gutiérrez, Luis Enrique Hernández
Martín, Jesica Rodríguez
Pérez, Lina
Bascones, Rafael J. Lario
Moro, Ángel Morales González
Pérez, Noelia Cruz
Powiązania:
https://bibliotekanauki.pl/articles/1853859.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
promieniowanie
wody podziemne
kopalnia
Wyspy Kanaryjskie
radon gas
radiation
groundwater
mines
Canary Islands
Opis:
In the Canary Islands, groundwater is the main source of drinking water. Groundwater mines have been the system used by the engineers of the archipelago to collect water from the ground. The Canary Islands are volcanic with soils characterized by being rich in uranium, the disintegration of which gives rise to radon gas. In this study, radon gas levels in the mines on two islands of the archipelago have been measured to study exposure to this gas in the galleries. Results show values much higher than the European regulatory limit concentrations.
Źródło:
Archives of Mining Sciences; 2020, 65, 4; 869-876
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spring-loaded winch band brakes as tools to improve safety during mooring operations on ships
Autorzy:
Iglesias-Baniela, S.
Pérez-Canosa, J. M.
Cid-Bacorelle, D.
Powiązania:
https://bibliotekanauki.pl/articles/1841578.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
berthing operations
winch band brakes
mooring operations
brake holding capacity
minimum breaking load
Liquefied Natural Gas
LNG
Hydraulic Release
mooring line
Opis:
Some recent accident reports involving large vessels in mooring operations or breaking away from their moorings conclude that brakes of mooring winches do not render before line parts. As the potential loss of life is high, the utmost attention on-board must be paid to minimise this inherent risk. When the load on the mooring lines becomes overloaded beyond the pre-set levels, mooring winches band brakes have the safety function of rendering and allowing the line to shed this load before its potential breaking and the subsequent snap-back. As a preventive measure against breaking, the pre-set level, known as Brake Holding Capacity (BHC), must be below the Minimum Breaking Load (MBL) of the line. In this paper, the authors analyse concerns that can arise from those with conventional screw manually-applied band brakes regarding their BHC reliability. Thus, in order to improve safety, the advantages of the spring-applied band brakes with manual setting and release or with hydraulic release are highlighted. Finally, the paper shows a typical procedure using a hydraulic jack for brake testing the winch of a Liquefied Natural Gas (LNG) ship to fix their BHC in order to hold 60% of the MBL of the mooring line.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 3; 711-719
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of information on the prevention of occupational risks and ergonomic requirements in the development of non-traumatic osteomuscular diseases of the shoulder – a pilot study
Autorzy:
Rodríguez-Blanes, Gloria M.
Lobato-Cañón, José Rafael
Sánchez-Payá, José
Ausó-Pérez, José Ramón
Cardona-Llorens, Antonio Francisco J.
Powiązania:
https://bibliotekanauki.pl/articles/2161943.pdf
Data publikacji:
2019-11-15
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
prevention
occupational health
primary healthcare
shoulder
musculoskeletal disorders
cumulative trauma disorders
Opis:
Objectives Shoulder pain associated with upper limb musculoskeletal disorders is an important health problem in clinical practice due to its high prevalence, frequent consultations in primary healthcare and occupational health. Preventive strategies, including information disseminated among workers, can be useful. The aim of this study is to analyze the associations between non-traumatic osteomuscular diseases of the shoulder and the workers’ knowledge of the risks at the workplace and preventive measures developed there, as well as the association with ergonomic requirements. Material and Methods An observational case-control study was carried out on an occupationally active population assisted during 1 year in 1 healthcare center, involving 690 participants. Data were collected through a questionnaire including sociodemographic variables, the workplace, the knowledge of prevention and ergonomic requirements. The independent effect of the variables associated with non-traumatic shoulder pathology was explored through logistic regression. Results In total, 66.7% of the participants stated that they had been informed of the occupational hazards related to their jobs. The following variables were associated with a lower probability of shoulder injuries: male gender, working hours > 9 h/day or > 40 h/week, as well as having information on the risks associated with the workplace, using personal protective equipment, the existence of an occupational risks prevention service and/or risk assessment, the knowledge of the prevention plan, periodic medical examinations, and using one arm or physical force at work. A multivariate analysis revealed that the risk increased with age and lower educational levels, forced postures, repeated gestures, monotony and temporary absences from work. Furthermore, being informed of workplace risks, and using a single arm as well as physical force were shown as independent protective factors. Conclusions Information on both the ergonomic requirements and how to prevent occupational risks is a useful tool for the prevention of non-traumatic shoulder diseases. Preventive policies including health education interventions in the workplace could benefit other developed preventive activities. Int J Occup Med Environ Health. 2019;32(6):825–40
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2019, 32, 6; 825-839
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamism patterns of western Mediterranean cruise ports and the coopetition relationships between major cruise ports
Autorzy:
Esteve-Perez, J.
Garcia-Sanchez, A.
Powiązania:
https://bibliotekanauki.pl/articles/258786.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
cruise ports
Mediterranean ports
hierarchic patterns
coopetition
shift-share analysis
Opis:
The Mediterranean Sea has seen an increase of ports hosting cruise ships during the first fifteen years of the 21st century. The increase in cruise ship presence in Mediterranean ports is associated with the dynamism of cruise traffic in recent years, with an average annual growth of 7.45% for cruise passengers worldwide during the period of 1990-2015. Cruise traffic is a maritime business that is primarily composed of two elements, maritime affairs and tourism. This article focuses on the maritime component. With the growth of the cruise industry, cruise lines have been forced to seek new ports to meet demand in an attempt to create differentiated products based on the ports that compose the itinerary. The itinerary system of cruise traffic makes the cruise ports depend on one another to design an itinerary. This feature results in both complex geographic relationships in the design of a cruise itinerary and complex competitive/cooperative relationships between ports. The aim of this article is to present the hierarchic picture of a sample of 29 cruise ports in the Western Mediterranean region during the period of 2000-2015. To achieve this goal, a port size classification is proposed and a shift-share analysis at the inter- and intra-group size level is applied. Moreover, concentration measures are used to determine the changes in the levels of market concentration. Furthermore, a dynamic model is proposed to determine the competitive or cooperative relationships between cruise ports. The proposed model is applied to the largest ports with data from the 2001-2015 period.
Źródło:
Polish Maritime Research; 2018, 1; 51-60
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feeding habits and habitat of herbivorous mammals from the Early–Late Hemphillian (Miocene) of Costa Rica
Autorzy:
Perez-Crespo, V.A.
Laurito, C.A.
Arroyo-Cabrales, J.
Valerio, A.L.
Morales-Puente, P.
Cienfuegos-Alvarado, E.
Otero, F.J.
Powiązania:
https://bibliotekanauki.pl/articles/21193.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Carbon and oxygen stable isotope values in the dental enamel of fossils were used to infer the diet and habitat of the extinct equids Calippus hondurensis, Dinohippus mexicanus, and Protohippus gidleyi, the gomphothere Gomphotherium hondurensis, and the llama Hemiauchenia vera of the Early–Late Hemphillian (Hh2) from San Gerardo de Limoncito, Puntarenas province, Costa Rica. The results suggest that these mammals fed mainly on C₃ plants and lived in clearings of rainforests. This contrasts with previous studies from North America that indicated that the same species lived in forest savannas and fed mainly on C₄ plants, but it is similar to the results obtained from the palynological record of the area, as well as with several vegetation models suggesting the presence of humid tropical forest during the Miocene in Central America.
Źródło:
Acta Palaeontologica Polonica; 2018, 63, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Importance of the ore veins to study, to interpret and to protect the mining heritage
Znaczenie żył rudnych dla studiowania, interpretacji i ochrony dziedzictwa górniczego
Autorzy:
Dueñas Molina, J.
Lorenc, M. W.
Molina Vega, A.
Molina Molina, F.
Liébanas, J. S.
Pérez Sánchez, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/122205.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
mining heritage
legal protection
cultural landscape
working methodology
dziedzictwo górnicze
ochrona prawna
krajobraz kulturowy
metodologia pracy
Opis:
Four thousand years of mining activity shaped a singular cultural landscape in the Linares-La Carolina district. The geological richness of the area attracted the main civilizations from different eras. Argarians, Romans, Carthaginians, as well as mining companies from Great Britain, Germany, France and Belgium during the industrial period, established their installations working the rich veins of copper and galena. In 2002 the Cultural authorities of the Andalusia Board entrusted the Colectivo Proyecto Arrayanes with a research to identify the most significant remains. The result of our work was the documentation for the inscription of 65 mining and metallurgy sites in the Andalusia Historic Heritage List. Later, we extended the work to a second record including 60 more sites, belonging to all municipalities of the mining district. Currently, our association is developing a project to obtain the certification of the ancien mining district as Heritage Area, a new legal body of the Historical Heritage Law published in Andalucía in 2007. This could provide better protection for the main part of the mining sites and remains in the district, including the archaeological sites. The declaration will allow the management of the territory to became a Cultural Park. Our research establish 16 sectors, extended over eight municipalities. Each sector is related to one or several veins, and includes mining sites, archaeological sites and remains related to metallurgy, ore dressing or railway installations. And each site is described in a registry card. We have catalogued more than 580 sites. Around 150 of them have evidences of the presence of Cornish technology. The Cultural Landscape as axle of future developments and the veins are the real order of the mining territory. Industrial and mining remains, roads, railway lines, etc, are placed in relation with the orientation of the veins. These are the main guidelines of the Working Methodology we are developing to complete this ambitious project.
Cztery tysiące lat działalności górniczej ukształtowało na obszarze Linares-La Carolina swoisty krajobraz kulturowy. Geologiczne bogactwo tego obszaru interesowało główne cywilizacje wszystkich epok. Argarianie, Rzymianie, Kartagińczycy, podobnie jak później wielkie kompanie górnicze z Wielkiej Brytanii, Niemiec, Francji i Belgii w okresie przemysłowym, wszyscy wznosili swoje zakłady pracujące funkcjonujące na bogatych żyłach miedzi i ołowiu. W 2002 r. władze ds. kultury Zarządu Andaluzji powierzyły stowarzyszeniu Colectivo Proyecto Arrayanes wykonanie inwentaryzacji najważniejszych pozostałości górniczych. Rezultatem wykonanej pracy była dokumentacja obejmująca 65 stanowisk górniczych i hutniczych z Listy Andaluzyjskiego Dziedzictwa Historycznego. Później badania poszerzono o drugi zapis kolejnych 60 stanowisk, należących do wszystkich gmin tego górniczego obszaru. Obecnie Stowarzyszenie opracowuje projekt mający na celu deklarację tego dawnego rejonu górniczego jako Obszar Dziedzictwa, nową postać prawną Dziedzictwa Historycznego stworzoną w Andaluzji w 2007 r. Mogłoby to zapewnić lepszy poziom ochrony głównej części terenów górniczych, ale też pozostałego obszaru, w tym stanowisk archeologicznych. Deklaracja taka umożliwiłaby zarządzanie tym terytorium jako Parkiem Kultury. Przedstawiona propozycja ustanawia 16 obszarów, poszerzonych o osiem gmin. Każdy obszar związany jest z jedną lub kilkoma żyłami rudnymi i obejmuje stanowiska górnicze, archeologiczne oraz pozostałości związane z metalurgią, przeróbką rudy i obiekty kolejowe. Każde stanowisko opisane jest w formie oddzielnej karty kartoteki rejestru. Stworzony katalog obejmuje ponad 560 stanowisk, z których około 150 posiada dowody wykorzystywania technologii kornwalijskiej. Krajobraz kulturowy oraz rudne żyły stanowią oś przyszłego rozwoju terytorium górniczego. Pozostałości przemysłowe i górnicze, drogi, linie kolejowe itp., są umieszczone w stosunku do orientacji żyły. Właśnie one są głównymi wytycznymi do stworzenia roboczej metodologii, opracowywanej w celu ukończenia tego ambitnego projektu.
Źródło:
Hereditas Minariorum; 2018, 5; 33-50
2391-9450
2450-4114
Pojawia się w:
Hereditas Minariorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maxwell-Lorentz Matrix
Autorzy:
Montiel-Pérez, J. Yaljá
Pendleton, J.
López-Bonilla, J.
Vidal-Beltrán, S.
Powiązania:
https://bibliotekanauki.pl/articles/1177983.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Lorentz Group
Lorentz transformations
Maxwell equations
Opis:
Lorentz invariance of Maxwell electromagnetic equations is demonstrated in two complementary ways: first, we give a pedestrian review with three-vector equations, and we then express Maxwell equations in a four-vector matrix form (the Maxwell-Lorentz matrix) which demonstrates the intimate connection of Maxwell equations with the Lorentz group. Each Maxwell-Lorentz matrix component is the product of three matrices: a derivative matrix, a 4x4 Lorentz group generator matrix, and an electromagnetic field matrix. We obtain rotary Lorentz transformations of the electromagnetic field matrix from Lorentz equation matrices. We then transform the derivative and electromagnetic matrices and obtain an explicit matrix demonstration of Lorentz invariance of Maxwell equations. To obtain this result, we express all transformation matrices in exponential form to facilitate the application of simple Lorentz group algebra. The pedestrian approach illustrates what the Lorentz group matrix approach actually accomplishes and helps one to gain some appreciation of group theory methods.
Źródło:
World Scientific News; 2018, 96; 59-82
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polyphenolic composition of Spanish cultivars of globe artichoke (Cynara cardunculus L. var. scolymus (L.) Fiori)
Autorzy:
Pérez-Esteve, É.
Sałata, A.
Barat, J.M.
Stępniowska, A.
López-Galarza, S.
Nurzyńska-Wierdak, R.
Powiązania:
https://bibliotekanauki.pl/articles/11897335.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
cardoon
Cynara cardunculus
polyphenolic composition
Opal cultivar
Concerto cultivar
Symphony cultivar
Madrigal cultivar
Blanca de Tudela cultivar
A-106 cultivar
herbal plant
medicinal plant
phenolics content
chlorogenic acid
apigenin
cynarin
Opis:
Globe artichoke (Cynara cardunculus L. var. scolymus (L.) Fiori) is an edible herbaceous perennial plant that plays an important economic role in Mediterranean agriculture. In recent years, extensive research, which aimed to characterize the phenolic profile of the most important globe artichoke cultivars in Italy, has been conducted. However, very little information is available on the phenolic composition of cultivars traditionally grown in Spain. In this work, six cultivars (‘Opal’, ‘Symphony’, ‘Concerto’, ‘Madrigal’, ‘Blanca de Tudela’ and ‘A-106’) cultured in Spain were characterized according to their phenolic content. The phenolic profile differed between cultivars, and also between flower parts. The major phenolic compound in all the different cultivars was chlorogenic acid. Of the six studied cultivars, ‘Madrigal’ had the highest phenolic content.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 2; 177-184
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some applications of Noether’s theorem
Autorzy:
Montiel-Pérez, J. Yaljá
López-Bonilla, J.
López-Vázquez, R.
Vidal-Beltrán, S.
Powiązania:
https://bibliotekanauki.pl/articles/1166045.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Complex Riemann-Silberstein vector
Duality rotations
Ignorable variable
Invariance of the action
Lanczos variational method
Linear differential equation of second order
Maxwell equations
Noether’s theorem
Variation of parameters
Variational symmetry
Opis:
If the action S= ∫_(t_1)^(t_2)▒〖L(q,〗 (q,) ̇t) dt is invariant under the infinitesimal transformation t ̃=t+ε τ(q,t), q ̃_r= q_r+ε ξ_r (q,t),r=1,… ,n, with ε=constant ≪1, then the Noether’s theorem permits to construct the corresponding conserved quantity. The Lanczos approach employs to ε= q_(n+1) as a new degree of freedom, thus the Euler-Lagrange equation for this new variable gives the Noether’s constant of motion. Torres del Castillo and Rubalcava-García showed that each variational symmetry implies the existence of an ignorable coordinate; here we apply the Lanczos approach to the Noether’s theorem to motivate the principal relations of these authors. The Maxwell equations without sources are invariant under duality rotations, then we show that this invariance implies, via the Noether’s theorem, the continuity equation for the electromagnetic energy. Besides, we demonstrate that if we know one solution of p(x)y''+q(x)y'+r(x)y=0, then this Lanczos technique allows obtain the other solution of this homogeneous linear differential equation.
Źródło:
World Scientific News; 2018, 106; 69-80
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spacetimes embedded into E6
Autorzy:
Montiel-Pérez, J. Yaljá
Caltenco, J. H.
Linares y M., R.
López-Bonilla, J.
Powiązania:
https://bibliotekanauki.pl/articles/1164540.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
E6
Embedding of Riemannian 4-spaces
Local and isometric embedding
Opis:
We study the local and isometric embedding of Riemannian spacetimes into the pseudo-Euclidean flat E6. Our main purpose is to pinpoint the known results with the corresponding references, and to indicate the main routes and connections from here to the still open problems in the field. Some new results are also included in order to round off our discussion.
Źródło:
World Scientific News; 2018, 107; 31-45
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stirling numbers with negative indices
Autorzy:
Yaljá Montiel-Pérez, J.
López-Bonilla, J.
Vidal-Beltrán, S.
Powiązania:
https://bibliotekanauki.pl/articles/1177734.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Gould and Schläfli formulas
Stirling numbers
Opis:
We realize applications of expressions for Stirling numbers with negative indices, in particular, we show that the formulas of Zhi-Hong Sun are consequences of the known identities of Schläfli and Gould.
Źródło:
World Scientific News; 2018, 101; 217-221
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The oldest post-Paleozoic (Ladinian, Triassic) brachiopods from the Betic Range, SE Spain
Autorzy:
Baeza-Carratala, J.F.
Perez-Valera, F.
Perez-Valera, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/22178.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Triassic brachiopods from the Betic Range were unknown hitherto. Herein we describe the first brachiopod occurrences in the early Ladinian of this domain referable to a new genus and species Misunithyris goyi derived from three localities of the south-Iberian Triassic outcrops. The analysis of internal and external characters of this brachiopod allowed to characterize systematically and biogeographically this fauna in a chronostratigraphic interval when the paucity of brachiopod records is attributable to the entire peri-Iberian epicontinental platform system established in the westernmost Tethyan margin. The new record is endemic to the Betic Range and represents a new faunal constituent of the multicostate zeillerids stock. This fauna inhabited the epicontinental seas of the Sephardic bioprovince since a closer affinity with the low-latitude Tethyan assemblages is revealed. The possible linkage of the Triassic stock with the Early–Middle Jurassic multicostate zeillerid representatives suggests feasible phylogenetic relationships between both groups.
Źródło:
Acta Palaeontologica Polonica; 2018, 63, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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