113 research outputs found
Approximate Controllability of Delayed Fractional Stochastic Differential Systems with Mixed Noise and Impulsive Effects
We herein report a new class of impulsive fractional stochastic differential
systems driven by mixed fractional Brownian motions with infinite delay and
Hurst parameter . Using fixed point techniques, a
-resolvent family, and fractional calculus, we discuss the existence of a
piecewise continuous mild solution for the proposed system. Moreover, under
appropriate conditions, we investigate the approximate controllability of the
considered system. Finally, the main results are demonstrated with an
illustrative example.Comment: Please cite this paper as follows: Hakkar, N.; Dhayal, R.; Debbouche,
A.; Torres, D.F.M. Approximate Controllability of Delayed Fractional
Stochastic Differential Systems with Mixed Noise and Impulsive Effects.
Fractal Fract. 2023, 7, 104. https://doi.org/10.3390/fractalfract702010
Chitosan/polyaniline hybrid conducting biopolymer base impedimetric immunosensor to detect Ochratoxin-A
Chitosan (CS)–polyaniline (PANI) hybrid conducting biopolymer film was obtained on indium–tin-oxide
(ITO) electrode using electrochemical polymerization process. Fourier transform infrared (FT-IR) spectra
of PANI–CS had showed covalent and hydrogen binding between PANI and CS molecules. Electrochemical
impedance spectroscopy (EIS) measurements had showed lowcharge transfer resistance (RCT) of PANI–CS
and PANI. Successive rabbit antibody (IgGs) immobilizationonPANI–CS, CS and PANI matrixes surfacewere
confirmed with FT-IR and EIS measurements. Ochratoxin-A (OTA) interaction with IgGs had increased RCT
values and showed linear response up to 10 ng/mL OTA concentration in electrolyte. Relative change in
RCT was higher in PANI–CS due to higher proportion of carboxylic and hydroxyl functionalities at PANI–CS
matrix surfaces. The absolute sensitivity of PANI, CS, and PANI–CSwere 16±6, 22±9 and 53±8�mL/ng,
respectively derived fromslope of linear response up to 10 ng/mL with 1 ng/mL minimum detection limit
Effect of foliar application of zinc and salicylic acid on growth, flowering and chemical constitute of African marigold cv. pusa narangi gainda (Targets erecta L.)
A field experiment on African marigold (Targets erecta L.) was conducted during winter season of 2014-15to study the foliar effect of Zn and SA of 20 treatment combinations having five concentrations of zinc (0.0, 0.25, 0.50, 0.75, and 1.0 %) and salicylic acid (0.0, 0.25, 0.50 and 1.0 mM/L).The treatmentZn4SA3 (Zinc 1% + Salicylic acid 1.0 mM/L) recorded the maximum plant height (77.41 cm), number of leaves per plant (314.10),earliest first flower bud appearance (39.78 days), maximum number of flowers per plant (62.33), maximum chlorophyll content (3.83mg/g) and maximum carotene content (3.07 mg/g)as compared to control where it was recorded minimum. These results are conclusive that foliar spraying with zinc 1.0% + salicylic acid 1.0 mM/L may positively increasedthe growth and flowering parametersof marigold
Salinity tolerance of cumin (Cuminum cyminum L.) genotypes during germination
A laboratory experiment was conducted to identify cumin (Cuminum cyminum L.) genotypes tolerant to salt at germination stage. Four salinity levels having electrical conductivity of 2.61 (control), 5.17 (low), S.10 (medium) and 12.15 (high) dSm-1 were tested. There is an increase in the suppression of seed germination with increase in salinity in all the genotypes tested. The genotype UC-20S showed maximum salt tolerance, followed by UC-209 and UC-2IS.
 
Salinity tolerance of cumin (Cuminum cyminum L.) genotypes during germination
A laboratory experiment was conducted to identify cumin (Cuminum cyminum L.) genotypes tolerant to salt at germination stage. Four salinity levels having electrical conductivity of 2.61 (control), 5.17 (low), S.10 (medium) and 12.15 (high) dSm-1 were tested. There is an increase in the suppression of seed germination with increase in salinity in all the genotypes tested. The genotype UC-20S showed maximum salt tolerance, followed by UC-209 and UC-2IS.
 
Mycotoxin detection on antibody immobilized conducting polymer supported electrochemically polymerized Acacia gum,
GPR120 (FFAR4) is preferentially expressed in pancreatic delta cells and regulates somatostatin secretion from murine islets of Langerhans
Open Access articleThe final publication is available at Springer via http://dx.doi.org/10.1007/s00125-014-3213-0AIMS/HYPOTHESIS: The NEFA-responsive G-protein coupled receptor 120 (GPR120) has been implicated in the regulation of inflammation, in the control of incretin secretion and as a predisposing factor influencing the development of type 2 diabetes by regulation of islet cell apoptosis. However, there is still considerable controversy about the tissue distribution of GPR120 and, in particular, it remains unclear which islet cell types express this molecule. In the present study, we have addressed this issue by constructing a Gpr120-knockout/β-galactosidase (LacZ) knock-in (KO/KI) mouse to examine the distribution and functional role of GPR120 in the endocrine pancreas. METHODS: A KO/KI mouse was generated in which exon 1 of the Gpr120 gene (also known as Ffar4) was replaced in frame by LacZ, thereby allowing for regulated expression of β-galactosidase under the control of the endogenous GPR120 promoter. The distribution of GPR120 was inferred from expression studies detecting β-galactosidase activity and protein production. Islet hormone secretion was measured from isolated mouse islets treated with selective GPR120 agonists. RESULTS: β-galactosidase activity was detected as a surrogate for GPR120 expression exclusively in a small population of islet endocrine cells located peripherally within the islet mantle. Immunofluorescence analysis revealed co-localisation with somatostatin suggesting that GPR120 is preferentially produced in islet delta cells. In confirmation of this, glucose-induced somatostatin secretion was inhibited by a range of selective GPR120 agonists. This response was lost in GPR120-knockout mice. CONCLUSIONS/INTERPRETATION: The results imply that GPR120 is selectively present within the delta cells of murine islets and that it regulates somatostatin secretion.BBSRC-CASE studentshipDiabetes U
The role of lipid droplet formation in the protection of unsaturated fatty acids against palmitic acid induced lipotoxicity to rat insulin-producing cells
Inactivation of Surface-Borne Microorganisms and Increased Germination of Seed Specimen by Cold Atmospheric Plasma
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