Repozitorij Univerze v Novi Gorici

Iskanje po repozitoriju
A+ | A- | Pomoč | SLO | ENG

Iskalni niz: išči po
išči po
išči po
išči po
* po starem in bolonjskem študiju

Opcije:
  Ponastavi


91 - 100 / 125
Na začetekNa prejšnjo stran45678910111213Na naslednjo stranNa konec
91.
Highly Sensitive Determination of Pyoverdine in Cloud Water by HPLC-Thermal Lens Spectrometry
Leja Goljat, Mitja Martelanc, Virginie Vinatier, Anne-Marie Delort, Mladen Franko, 2016, objavljeni povzetek znanstvenega prispevka na konferenci

Opis: New method for pyoverdine and Fe(III)-pyoverdine detection was developed. Two isomers of pyoverdine and two isomers of Fe(III)-pyoverdine were separated isocraticaly on reversed-phase (RP)-C18 chromatograhic column and detected by DAD, FLD and TLS. HPLC-TLS method enables separation and determination of pyoverdine and Fe(III)-pyoverdine in a single run and excels in superior sensitivities when compared to conventional HPLC-DAD system.
Ključne besede: Pyoverdine, Fe(III)-pyoverdine, cloud water, high-performance liquid chromatography, thermal lens spectrometry
Objavljeno v RUNG: 04.07.2016; Ogledov: 5481; Prenosov: 0

92.
93.
94.
Carotenes in processed tomato after thermal treatment
Mladen Franko, Dane Danijel Bicanic, Svjetlana Luterotti, Ksenija Marković, 2014, objavljeni znanstveni prispevek na konferenci

Ključne besede: karotenoidi, paradižnik, termična obdelava
Objavljeno v RUNG: 16.06.2016; Ogledov: 3713; Prenosov: 21
URL Povezava na celotno besedilo

95.
Thermal lens microscopy : characterization and optimization
Mingqiang Liu, Mladen Franko, 2014, objavljeni znanstveni prispevek na konferenci

Ključne besede: mikroskopija, TLS, karakterizacija, optimizacija
Objavljeno v RUNG: 16.06.2016; Ogledov: 4692; Prenosov: 144
URL Povezava na celotno besedilo

96.
97.
98.
Synthesis, Structure and Antimicrobial Property of Green Composites from Cellulose, Wool, Hair and Chicken Feather
Chieu Tran, Franja Prosenc, Mladen Franko, Gerald Benzi, 2016, izvirni znanstveni članek

Opis: Novel composites between cellulose (CEL) and keratin (KER) from three different sources (wool, hair and chicken feather) were successfully synthesized in a simple one-step process in which butylmethylimidazolium chloride (BMIm+Cl-), an ionic liquid, was used as the sole solvent. The method is green and recyclable because [BMIm+Cl-] used was recovered for reuse. Spectroscopy (FTIR, XRD) and imaging (SEM) results confirm that CEL and KER remain chemically intact and homogeneously distributed in the composites. KER retains some of its secondary structure in the composites. Interestingly, the minor differences in the structure of KER in wool, hair and feather produced pronounced differences in the conformation of their corresponding composites with wool has the highest α-helix content and feather has the lowest content. These results correlate well with mechanical and antimicrobial properties of the composites. Specifically, adding CEL into KER substantially improves mechanical strength of [CEL+KER] composites made from all three different sources, wool, hair and chicken feathers (i.e., [CEL+wool], [CEL+hair] and [CEL+feather]. Since mechanical strength is due to CEL, and CEL has only random structure, [CEL+feather] has, expectedly, the strongest mechanical property because feather has the lowest content of α-helix. Conversely, [CEL+wool] composite has the weakest mechanical strength because wool has the highest α-helix content. All three composites exhibit antibacterial activity against methicillin resistant S. aureus (MRSA). The antibacterial property is due not to CEL but to the protein and strongly depends on the type of the keratin, namely, the bactericidal effect is strongest for feather and weakest for wool. These results together with our previous finding that [CEL+KER] composites can control release of drug such as ciprofloxacin clearly indicate that these composites can potentially be used as wound dressing.
Ključne besede: Green synthesis, Ionic liquid, Keratin, Antibacteria, Wound dressing
Objavljeno v RUNG: 08.06.2016; Ogledov: 4421; Prenosov: 0
Gradivo ima več datotek! Več...

99.
Microfluidic flow injection thermal lens microscopy for high throughput and sensitive analysis of sub-μL samples
Mingqiang Liu, Sara Malovrh, Mladen Franko, 2016, izvirni znanstveni članek

Opis: An analytical method combining microfluidic flow injection analysis (μFIA) with thermal lens microscopy (TLM) was developed for high throughput and sensitive analysis of sub-μL samples. Performance of the μFIA-TLM was validated for detection of hexavalent chromium [Cr(VI)] in water samples. At different sample injection volumes, detection positions and flow rates, influences of the reaction time and the diffusion of Cr-diphenylcarbazone (DPCO) complexes on the μFIA-TLM signal were investigated. Photodegradation of the Cr-DPCO complex was clearly observed when the absorbed photons per Cr-DPCO is above 1600. After optimization of the TLM with respect to rapid flows (up to 10 cm/s), we achieved a limit of detection of 0.6 ng/mL for Cr(VI) in a 50-μm deep channel. Impacts of interfering ions [V(V), Mo(VI), Fe(III)] on the Cr(VI) determination were found to be small. Cr(VI) in real samples from a cement factory were determined and found in good agreement with results of spectrophotometry. This μFIA-TLM shows advantages over its conventional counterpart, such as eliminating additional sample conditioning, reducing over 100 times the sample consumption to sub-μL and over 10 times the time required for one sample injection to a few seconds (up to 20 samples/min). The optimized μFIA-TLM setup can be applied for fast and sensitive analysis of nonfluoresent sub-μL samples in rapidly flowing mediums.
Ključne besede: Spektrometrija TLS, mikroskopija TLM, mikrofluidika, krom (VI)
Objavljeno v RUNG: 01.06.2016; Ogledov: 5182; Prenosov: 269
.pdf Celotno besedilo (828,33 KB)

100.
Optimised calibration procedure for bioanalytical determination of organophosphate pesticides in apple juices by immobilised AChE
Boris Pihlar, Klavdija Mežnar, Mladen Franko, Lea Pogačnik, 2003, izvirni znanstveni članek

Opis: Optimised calibration procedure for bioanalytical determination of organophosphate pesticides in apple juices by immobilised AChE
Ključne besede: analitske metode, biosenzorji, pesticidi, sadni sokovi, analytical techniques, biosensors, FIA, flow injection analysis, pesticides, fruit juices
Objavljeno v RUNG: 17.05.2016; Ogledov: 4791; Prenosov: 17
URL Povezava na celotno besedilo

Iskanje izvedeno v 0.06 sek.
Na vrh