Some Exact Solutions of Generalized Jeffrey Fluid Using N-Transform

In this paper, we presents some new exact solutions corresponding to three unsteady flow problems of a generalized Jeffrey fluid produced by a flat plate between two side walls perpendicular to the plate. The fractional calculus approach is used in the governing equations. The exact solutions are established by means of the Fourier sine transform and N-transform. The series solutions of velocity field and associated shear stress in terms of Fox H-function, satisfying all imposed initial and boundary conditions, have been obtained. The similar solutions for ordinary Jeffrey fluid, performing the same motion, appear as limiting case of the solutions are also obtained. Also, the obtained results are analyzed graphically through various pertinent parameters.

The Oscillatory Motion of Oldroyd-B Fluid by Incorporating Some of the Mechanical Factors

The aim of this paper is to present a numerical study of oscillatory motion of Oldroyd-B fluid in a uniform magnetic field through a small circular pipe. First, we derive the orientation stress tensor by considering the Brownian force. Then, the orientation stress tensor is incorporated by taking Hookean dumbbells on Brownian configuration fields in the Oldroyd-B model. The Oldroyd-B model is then reformulated coupled with the momentum equation and the total stress tensor. Finally, we analyze the orientation stress tensor in the pipe by the numerical simulations of the model and showed that the effect of orientation stress tensor is considerable although the Brownian force is sufficiently small.

Competitive role of nitrogen functionalities of N doped GO and sensitizing effect of Bi_(2)O_(3)QDs on TiO_(2)for water remediation

The promising solar irradiated photocatalyst by pairing of bismuth oxide quantum dots(BQDs)doped TiO_(2)with nitrogen doped graphene oxide(NGO)nanocomposite(NGO/BQDs-TiO_(2))was fabricated.It was used for degradation of organic pollutants like 2,4-dichlorophenol(2,4-DCP)and stable dyes,i.e.Rhodamine B and Congo Red.X-ray diffraction(XRD)profile of NGO showed reduction in oxygenic functional groups and restoring of graphitic crystal structure.The characteristic diffraction peaks of TiO_(2)and its composites showed crystalline anatase TiO_(2).Morphological images represent spherical shaped TiO_(2)evenly covered with BQDs spread on NGO sheet.The surface linkages of NO-O-Ti,C-O-Ti,Bi-O-Ti and vibrational modes are observed by Fourier transform infrared spectroscopy(FTIR)and Raman studies.BQDs and NGO modified TiO_(2)results into red shifting in visible region as studied in diffused reflectance spectroscopy(DRS).NGO and BQDs in TiO_(2)are linked with defect centers which reduced the recombination of free charge carriers by quenching of photoluminescence(PL)intensities.X-ray photoelectron spectroscopy(XPS)shows that no peak related to C-O in NGO/BQDs-TiO_(2)is observed.This indicated that doping of nitrogen into GO has reduced some oxygen functional groups.Nitrogen functionalities in NGO and photosensitizing effect of BQDs in ternary composite have improved photocatalytic activity against organic pollutants.Intermediate byproducts during photo degradation process of 2,4-DCP were studied through high performance liquid chromatography(HPLC).Study of radical scavengers indicated that O_(2)^(·-) has significant role for degradation of 2,4-DCP.Our investigations propose that fabricated nanohybrid architecture has potential for degradation of environmental pollutions.

Effects of homoeopathic ultrahigh dilutions of Aconitum napellus on Baker＇s yeast-induced fever in rabbits

OBJECTIVE： To evaluate the effects of homoeopathic ultrahigh dilutions of Aconitum napellus in Baker＇s yeast-induced fever in rabbits. METHODS： Rabbits were divided into 4 groups and each group contained 6 rabbits. Baker＇s yeast suspension （20%） was injected subcutaneously. After fever induction, paracetamol and homoeopathic ultrahigh dilutions （A. nape//us 200c and 1 000c） were given orally. Rectal temperature was measured with digital thermometer hourly. RESULTS： Fever was induced in all the rabbits after 4 hours of Baker＇s yeast administration. A. nape//us 200c and 1000c significantly reduced the temperature （P 〈 0.05）. In positive control, temperature decrease was more significant （P 〈 0.001 ）. CONCLUSION： The above findings indicate the effectiveness of ultrahigh dilutions ofA. nape//us in Baker＇s yeast-induced fever in rabbits. However, the effects were slower and less significant than standard medicine Moreover, future research is required to know their mechanism of reducing temperature.

High-performance transparent conducting films of long single-walled carbon nanotubes synthesized from toluene alone

Single-walled carbon nanotube(SWCNT)transparent conducting films(TCFs)are attracting increasing attention due to their exceptional optoelectronic properties.Toluene is a proposed carbon source for SWCNT synthesis,but the growth parameters of SWCNTs and their TCF optoelectronic performance(i.e.,sheet resistance versus transmittance)have been insufficiently evaluated.Here,we have for the first time reported a systematic study of the fabrication of high-performance SWCNT TCFs using toluene alone as the carbon source.The mechanisms behind each observed phenomenon were elucidated using optical and microscopy techniques.By optimizing the growth parameters,high yields of SWCNT TCFs exhibiting a considerably low sheet resistance of 57Ω/sq at 90%transmittance were obtained.This competitive optoelectronic performance is mainly attributable to long SWCNT bundles(mean length is 41.4μm)in the film.Additionally,a chirality map determined by electron diffraction displays a bimodal distribution of chiral angles divided at 15°,which is close to both armchair and zigzag edges.Our study paved the way towards scaled-up production of SWCNTs for the fabrication of high-performance TCFs for industrial applications.