microbiological chitosan potential application as anticariogenic agent

... supernatant was taken out for analysis Since the Gd-DTPA released much faster than paclitaxel, the release file was obtained within 48 hours The resulted released gadolinium in PBS was measured directly ... before freezedrying was dispersed in mL water, which was followed by sonication for 1min Then the mixture was poured into a plastic cuvette The zeta potential of products was 32 measured with palladium ... Briefly, there are two kinds of contrast agent: positive contrast agents and negative contrast agents (MRI technology website) (1) Positive contrast agents (appearing bright on MRI) They are...

Ngày tải lên: 26/11/2015, 22:41

... database, with a JDBC driver, and an application server such as Tomcat You will also need a copy of the YAZD application For our example we’ve used the MySQL database CAUTION The MySQL database ... appropriately Displaying Screens in a Portlet Our application is to operate as a single portlet, but we want to base it on an application that was designed as a number of JSPs (effectively servlets) ... finished trimming down the application 310 Download at Boykma.Com 2840ch13.qxd 7/13/04 12:44 PM Page 311 Exposing an Existing Application As a Portlet Figure 13-3 The application as a portlet In Figure...

Ngày tải lên: 05/10/2013, 04:20

... AsV AsIII AsV Yield AsV AsIII AsV Plant height DSMAa Field 1, 2, 3, 6, 13, 18 18 12, 14, 13, 17 Increased Increased Increased Decreased Pot/column/batch 15 5, 10, 19 Increased Slightly increased ... showed a pronounced decrease of AsV adsorption upon pH increase In contrast to AsV, solubility of AsIII decreases with decreasing pH in soil The pK1 of arsenous acid (H3AsO0) is 9.22, which implies ... amended with AsIII, AsV and DMAA AsIII was readily oxidised to AsV, resulting in no differences in As accumulation and yield between these two treatments Water extracts showed that DMAA was adsorbed...

Ngày tải lên: 15/03/2014, 23:49

... space is reasonably well covered by the agents’ random choice of initial strategies, any bias towards a particular outcome in the active strategy set will propagate itself as a bias in the value ... then act independently Acting collectively, the N -agent population shows superior predictive power and acts as a ‘more intelligent’ investor As a check, Fig shows that the game’s success returns ... population independent agents 250 200 150 100 50 1990 1992 1994 year 1996 1998 Fig Top: $/Yen FX-rate 1990-9 Bottom: cumulative profit for multi -agent game (black line) and for independent agents (shaded...

Ngày tải lên: 23/04/2014, 16:11

... C, Martin-Sanz P: Increased intrahepatic cyclooxygenase 2, matrix metalloproteinase 2, and matrix metalloproteinase expression is associated with progressive liver disease in chronic hepatitis ... protease and NS5B RNAdependent RNA polymerase) are potent molecular targets of new antiviral compounds Glycyrrhiza glabra is a perennial herb, native to central and South-Western Asia, as well as ... centuries against different diseases including viral diseases and become a focal point to identify, isolate and purify of new compounds to treat diseases such as Hepatitis Many traditional medicinal...

Ngày tải lên: 18/06/2014, 22:20

... C, Martin-Sanz P: Increased intrahepatic cyclooxygenase 2, matrix metalloproteinase 2, and matrix metalloproteinase expression is associated with progressive liver disease in chronic hepatitis ... protease and NS5B RNAdependent RNA polymerase) are potent molecular targets of new antiviral compounds Glycyrrhiza glabra is a perennial herb, native to central and South-Western Asia, as well as ... centuries against different diseases including viral diseases and become a focal point to identify, isolate and purify of new compounds to treat diseases such as Hepatitis Many traditional medicinal...

Ngày tải lên: 20/06/2014, 04:20

... increase the speed of the proton transverse relaxation (decrease of T2), leading to a negative contrast or a darkening of the image For T1 measurements, the inversion recovery pulse sequence was ... nanoparticles are suitable as both T1 and T2 agents for MRI Conclusions We synthesized highly water-dispersible carbon-coated iron oxide nanoparticles for use as contrast agents in MRI The coated ... by using an USPIO-particle contrast agent J Korean Phys Soc 2007, 51:1453-1456 13 Ahmad T, Rhee I, Hong S, Chang Y, Lee J: Ni-Fe2O4 nanoparticles as contrast agents for magnetic resonance imaging...

Ngày tải lên: 20/06/2014, 23:20

... pH-dependent Cu release was clearly demonstrated and release was accelerated as the pH was reduced In vitro toxicity of CuCNPs in HeLa cells The toxicity of CuCNPs to cancer cells was investigated ... Cu release was observed at pH 7; however, release was much slower at this pH (particles at pH had released approximately 55% of their Cu at 12 h) compared to pH At pH 5, CuCNPs had released over ... sequestering and releasing metal ions from a delivery vector has been demonstrated In the current example, Cu 2+ was loaded to acrylate-based nanoparticles with Cu loadings as high as 16 wt.% This...

Ngày tải lên: 21/06/2014, 02:20

... ligand as rotatable and DNA as rigid.52 The grid centre was established by centring the grid box on whole DNA Grid box size of 60 Â 80 Â 110 Å with 0.375 Å spacing was used Macromolecule docking was ... reported work.32 2.3.3 Cell line profiles The potential anticancer efficacy of the developed derivatives was ascertained in term of % viability on human breast cancer cell line (MCF-7, wild-type) The ... anti-cancer potential The increase in viability of the cell line might be attributed to the increased molecular weights and hydrophobicities of the reported compounds Recently, Bayomi et al.44 assessed...

Ngày tải lên: 01/07/2014, 13:23

... single phase sample were prepared using a stainless steel die measuring mm in diameter Sufficient amount of powder was added, cold pressed uniaxially, and sintered at 1100oC in order to increase their ... prior to measurement RESULTS AND DISCUSSION 3.1 XRD and Thermal Analysis BiTaO4 powder was successfully synthesized using the conventional solid-state method The phase of pure BiTaO4 was obtained ... then transformed into triclinic phase at temperature above 870oC.10 The present study focused on the phase formation, thermal and electrical properties of BiTaO4 phase using combination techniques...

Ngày tải lên: 07/08/2014, 14:20

... pump (with degasser), an autosampler, a fluorescence detector, and a diode-array-based UV detector was used for the Dex-release study A reverse phase C18 (Agilent, 4.6 × 150 mm, μm) was used for ... full hydrolysis As shown in Figure 2, the Dex release rate depends on temperature When the incubation temperature increased from 4°C to 37°C, the Dex releasing rate was greatly increased We also ... with acetonitrile/water = 1/1 as the mobile phase Its flow rate was set constant at 0.5 mL/min The UV detection wavelength was at 240 nm The sample injection volume was 10 μL for all evaluation...

Ngày tải lên: 09/08/2014, 10:20

... 1996) Chitosan is biodegradable and is enzymatically broken down into nontoxic monosacchrides such as D-glucosamines by the action of lysozymes present in the body as well as chitosanase (Shigemasa, ... Hastings 1998), whereas chitosan has shown a strength of only 5-7MPa, in the wet state (Cheng, Deng et al 2003) The rationale for combining chitosan with other polymers has been diverse and application- specific ... For example, soft tissues such as skin has a strength of 7MPa, whereas a cortical bone has a strength of 133MPa, measured in the longitudinal direction (Black and Hastings 1998) Similarly, the...

Ngày tải lên: 13/11/2014, 09:32

... After biogas wastewater After biogas wastewater Wastewater treatment plant Wastewater treatment plant Paddy soil Paddy soil Most closely related species Pseudoxanthomonas mexicana Methylomonas methanica ... growth was examined via OD600nm measurement every day within weeks   42         2.7 Chemical analyses 2.7.1 Methane measurement Methane content in the gas phase of incubation vessels was analyzed ... deeply in the Methylomonas cluster and the most closely related species was Methylomonas methanica (95% similarity) Strain BG3 was therefore assigned the name Methylomonas sp BG3 and the 16S rDNA...

Ngày tải lên: 15/05/2015, 00:37

... Extrinsic pathway Mitochondria FasL/TRAIL/TNFR tBid Cytochrome c Apaf-1 Procaspase Caspase Caspase Procaspase Caspase Apoptosis Figure Death-receptor-mediated and mitochondrial pathways of cell ... of effector caspases (e.g., caspase-3) (Figure 3) Finally, both apoptosis pathway converged at the caspase-3 activation leading to cell death Apoptosis is characterized by cytoplasmic and nuclear ... after the causative medication was last taken [12] and for this reason, such toxicities are not clearly associated with the drug administration as the causative agent during clinical testing They...

Ngày tải lên: 09/09/2015, 11:21

... categorized into gas (vapor) phase fabrication and liquid phase fabrication Gas phase fabrication, such as pyrolysis or inert gas condensation, involves evaporation, supersaturation, gas-solid surface ... Sketch of effective interface potential as a function of film thickness Line (1) denotes the stable case, line (2) the unstable case and line (3) the metastable case.21……………………….…………………………… Figure ... thickness Line (1) denotes the stable case, line (2) the unstable case and line (3) the metastable case.21 In contrast to polymer which dewets only above its glass transition temperature, metal can...

Ngày tải lên: 09/09/2015, 11:26

... external contrast agents like fluorescent dyes or nanoparticles are necessary These contrast agents should be small enough to be able to target cells The optical signature from these contrast agents ... infrared region is absorption by water which increases sharply for wavelengths above 1000 nm A new class of contrast agents for SHG microscopy has recently emerged [31] Some inorganic nanoparticles ... light they were used as contrast agents for confocal reflectance microscopy (Fig 1.4) Antibody conjugated gold nanospheres were used to image cancer cells in culture [42] as well as in ex vivo tissue...

Ngày tải lên: 09/09/2015, 18:50

... nanoparticles showed the effectiveness for their use as a nanoadsorbent that can find great potentials in other environmental applications as well, such as for heavy metal removal from aqueous solutions ... engineering has provided the ability to create objects measuring between to 100 nm in at least one dimension In the last few decades, many novel material properties have emerged as material dimension ... agent, for instance an adsorbent, should possess high capacity, fast sequestration kinetic as well as good selectivity Clearly, higher treatment throughput could be achieved if the remedial agent...

Ngày tải lên: 10/09/2015, 15:54

... antigenic shift has been the basis of the 1957 H2N2 (Asian flu) and 1968 H3N2 (Hong Kong flu) outbreaks (Ito et al., 1998), as well as the current H1N1 influenza pandemic In contrast, antigenic ... century By far the most devastating pandemic was the 1918 Spanish flu outbreak (H1N1) which killed at least 50 million people, justifying its description as “the last great plague of mankind” ... parts of Europe and the Middle East, as well as the occasional infections of humans with an overall fatality rate of over 60%, have caused worldwide concern about a potential new global epidemic...

Ngày tải lên: 11/09/2015, 10:00

... Cell culture 57 3.2.3 Procedure for NQO1 assay 57 3.2.4 Procedure for MTT assay 59 3.3 Results 59 3.3.1 Measurement of NQO1 induction assay by the Prochaska assay 3.3.2 Preliminary Evaluation of ... drugs (NSAIDs) such as celecoxib [13] and aspirin, the antiestrogens tamoxifen and raloxifene [14], the antiparasitic agent oltipraz [15] and the lipid-lowering agent atorvastatin [16] The structures ... colonies of promoted cells will be manifested as benign adenomas and hyperplasia such as polyps When the dysplastic cells enter the progression phase which is the most extended period in carcinogenesis,...

Ngày tải lên: 14/09/2015, 08:42