Search results for "GAS"
showing 10 items of 12601 documents
Hepatocyte transplantation, a step forward?
2019
Hepatocyte transplantation emerged a few decades ago as a possible strategy to overcome some of the limitations of liver transplantation, among them the availability of organ donors and the functional quality of grafts. Nowadays, allogenic cell transplantation is still to be confirmed as a viable therapeutic option for patients with hereditary metabolic liver diseases. Although we have now overseen 5 decades of basic and animal research in the field, the number of successfully treated patients remains low. Limitations in cell engraftment and selective proliferation of transplanted cells remain a constraint to the generalized use of this therapeutic approach.
Editeur. Special Issue Strategies for Nitrous Oxide Emission Mitigation in Agrosystems". Agriculture-Basel
2022
Culinary Tourism. A New Trend on the Tourism Market
2017
Seen as a new form of manifestation of the behavior of the consumer of tourism products and services, culinary tourism has recorded an ascending trending the last years, with a positive forecast for the following years. A possible explanation for this phenomenon is the orientation and encouragement of the tourist services providers to adopt regional development strategies that harness traditional local resources and products in a context where the contemporary consumer no longer only pursues the acquisition of products and services to meet their needs, but also looks forward to new experiences that are a delight for the senses. Against this background, the present paper aims to highlight so…
The Jäntti approach to adsorption with increasing gas pressure
2002
Jäntti introduced a method of calculating equilibrium adsorption from measurements where the pressure of the gas was varied in a stepwise manner. His aim was to shorten the time necessary for a given measurement. The method was applied to gas/solid systems in which simple adsorption processes occurred and where the number of adsorption sites was infinite. The present paper discusses the case where no adsorption is possible on an already occupied site (Langmuir isotherm) while the number of positions available for adsorption is considered limited. The advantages of using a gas pressure that increases linearly with time are evident for studies with this limitation. It is shown that such meas…
Towards Controlled Synthesis of Water-Soluble Gold Nanoclusters : Synthesis and Analysis
2019
Water-soluble gold nanoclusters with well-defined molecular structures and stability possess particular biophysical properties making them excellent candidates for biological applications as well as for fundamental spectroscopic studies. The currently existing synthetic protocols for atomically monodisperse thiolate-protected gold nanoclusters (AuMPCs) have been widely expanded with organothiolates, yet the direct synthesis reports for water-soluble AuMPCs are still deficient. Here, we demonstrate a wet-chemistry pH-controlled synthesis of two large water-soluble nanoclusters utilizing p-mercaptobenzoic acid (pMBA), affording different sizes of plasmonic AuMPCs on the preparative scale (∼7 …
Complete genome sequence of the methanogenic neotype strain Methanobacterium formicicum MF(T.).
2014
The neotype strain Methanobacterium formicicum MFT (DSM1535), a hydrogenotrophic methanogenic Archaeon, was isolated from a domestic sewage sludge digestor in Urbana (IL, USA). Here, the complete genome sequence of the methanogen is reported. The genome is 2,478,074 bp in size, featuring a GC content of 41.23%. M. formicicum MFT encodes several genes predicted to be involved in adaptation to abiotic stress such as high osmolarity. The strain MFT is of biotechnological importance since M. formicicum strains are often found in production-scale biogas plants and it is suggested as a starter culture for the anaerobic biomethanation process. (C) 2014 Elsevier B.V. All rights reserved.
Reaction of polyamines with diethyloxalate: a convenient route for the synthesis of tetraazacycloalkanes
2006
International audience; The reactivity of various polyamines with diethyloxalate has been investigated. It appears that, in similar experimental conditions, primary diamines give predominantly [2+2] adducts while the use of secondary benzylated polyamines results in [1+1] condensation. Although the intermediate tetraamides formed in the first case are extremely poorly soluble and show very slow reactivity towards reducing agents, cyclam has been obtained by using ultrasounds during the reaction of the corresponding tetraoxomacrocycle with BH 3 /THF. The [1+1] cyclization reaction of diversely N-benzylated linear tetraamines, whose selective syntheses have been devised herein, gives access t…
Pienācīgas un samērīgas atlīdzības princips autortiesību līgumos
2022
Darba mērķis ir izpētīt Eiropas Padomes un Parlamenta direktīvā (ES) 2019/790 par autortiesībām un blakustiesībām digitālajā vienotajā tirgū un ar ko groza Direktīvas 96/9/EK un 2001/29/EK ietvertā pienācīgas un samērīgas atlīdzības principa saturu, kā tas tiek ieviests Latvijas autortiesību regulējumā un kā tas atšķiras no taisnīgas atlīdzības jēdziena. Lai sasniegtu pētījuma mērķi, tika pētīts atlīdzības regulējums Eiropas Savienības (ES), Latvijas un citu ES dalībvalstu nacionālajās tiesībās. Pētījuma rezultātā secināts, ka Latvijas likumdevējs pienācīgas un samērīgas atlīdzības principu ieviesis caur Latvijas autortiesību regulējumā jau pastāvošo taisnīgas atlīdzības jēdzienu, papildino…
Atsavināšanas sabiedrības vajadzībām tiesiskā regulējuma problēmas un iespējamie risinājumi.
2019
Bakalaura darba mērķis ir izpētīt atsavināšanas sabiedrības vajadzībām tiesiskā regulējuma problēmas un identificēt iespējamos risinājumus. Darba pirmajā daļā autore pēta īpašumu kā tiesību institūtu un tā mijiedarbību ar atsavināšanu sabiedrības vajadzībām. Darba otrajā daļā tiek analizēts atsavināšanas sabiedrības vajadzībām tiesiskais regulējums, aplūkojot gan tiesības uz īpašumu starptautiskajos cilvēktiesību dokumentos, gan Latvijas tiesisko regulējumu par īpašuma atsavināšanu sabiedrības vajadzībām. Trešajā daļā tiek analizēts taisnīgas atlīdzības saturs, kompensācijas veidi atsavināšanas sabiedrības vajadzībām problemātikas kontekstā un sniegti priekšlikumi. Darba apjoms ir 40 lapasp…
Rāmja bungu bubyna tradīcija Latgalē
2020
Maģistra darba “Rāmja bungu bubyna tradīcija Latgalē” mērķis ir izpētīt un raksturot rāmja bungas bubynu kā mūzikas instrumentu un tā spēles tradīcijas robežas 21. gadsimta sākumā. Agrāku pētījumu par rāmja bungām Latvijā ir ļoti maz, tikpat kā nav pētīts rāmja bungu lietojums instrumentālajā muzicēšanā 21. gadsimta sākumā. Darbā autore ir apkopojusi zinātnisku un praktisku informācija par rāmja bungu lietošanu Latgalē dažādās muzicēšanas situācijās, to izplatību, uzbūvi, gatavošanas tehnoloģiju, muzikālajām īpašībām, spēles veidiem, repertuāru. Liela uzmanība ir pievērsta instrumenta gatavošanas un spēles tradīciju pārmantošani, kā arī individuāla muzikanta personiskajam radošumam un izdom…