A new method involving concurrent solid-phase microextraction combined with continuous hydrodistillation of essential oil was developed. This new methodology allowed for the detection by GC-MS of very small amounts of a diagnostic peak for the authentication of Ephedra sinica, in a short period of time and using only small sample sizes. This diagnostic peak was identified as 4-vinylanisole, and...

Esmapilgul tundub verbiga kartma kõik selge olevat: see väljendab subjekti emotsionaalset seisundit, hirmunud olekut, mida põhjustab võimalik oht. Karta võib kurja koera, tigedat naabrit, äikest, sõda, koroonat, ebaõnnestumist ja kõike. Aga mis oht ähvardab seda, kes ütleb: Kardan, et olete valesti aru saanud või Ma kardan, meie õnned on üksteisest eemal? Nendes näidetes […]

Son y?llarda tüm dünyada etkili olan i? hukukunun kat? uygulamalar?n?n esnekle?tirilmesi gerekti?i yönündeki görü? ülkemizde de kar??l?k bulmu? ve 4857 say?l? ?? Kanunu ile çe?itli esnek çal??ma uygulamalar? mevzuat?m?za dahil edilmi?tir. Bunlardan biri uzaktan modeli ba?larda yeterince uygulama alan? bulamam?? hatta bu nedenle Kanunu’nda öngörülen yönetmeli?in ç?kar?lmas? bile uzun y?llar sürm...

in the present study, ptruce/mwnts nanocatalysts synthesized via polyol process technique are applied as anode electro-catalyst in methanol electro-oxidation reaction (mor). to characterize the nanocatalysts, tem, xrd, eds and xps are investigated. cyclic voltammetry and choronoamperometry are used to evaluate the electro-catalytic activity and stability of the catalysts in methanol electro-oxi...