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Raina, Aakrati,Sawhny, Asheesh,Paul, Saurav,Nandamuri, Sridevi The Korean Academy of Conservative Dentistry 2020 Restorative Dentistry & Endodontics Vol.45 No.1
Objectives: This study aimed to compare the shear bond strength (SBS) of a self-adhering flowable composite (Dyad Flow) and a bulk-fill flowable composite (Smart Dentin Replacement [SDR]) to several pulp-capping materials, including MTA Plus, Dycal, Biodentine, and TheraCal. Materials and Methods: Eighty acrylic blocks with 2-mm-deep central holes that were 4 mm in diameter were prepared and divided into 2 groups (n = 40 each) according to the composite used (Dyad Flow or SDR). They were further divided into 4 sub-groups (n = 10 each) according to the pulp-capping agent used. SBS was tested using a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed using 2-way analysis of variance. A p value of < 0.05 was considered to indicate statistical significance. Results: A statistically significant difference (p = 0.040) was found between Dyad Flow and SDR in terms of bond strength to MTA Plus, Dycal, Biodentine, and TheraCal. Conclusions: Among the 8 sub-groups, the combination of TheraCal and SDR exhibited the highest SBS.
ON GENERALIZED WRIGHT'S HYPERGEOMETRIC FUNCTIONS AND FRACTIONAL CALCULUS OPERATORS
Raina, R.K. The Youngnam Mathematical Society Korea 2005 East Asian mathematical journal Vol.21 No.2
In the present paper we first establish some basic results for a substantially more general class of functions defined below. The results include simple differentiation and fractional calculus operators(integration and differentiation of arbitrary orders) for this class of functions. These results are then invoked in determining similar properties for the generalized Wright's hypergeometric functions. Further, norm estimate of a certain class of integral operators whose kernel involves the generalized Wright's hypergeometric function, and its composition(and other related properties) with the fractional calculus operators are also investigated.
Raina, R.K.,Bansal, Deepak The Youngnam Mathematical Society Korea 2008 East Asian mathematical journal Vol.24 No.4
In this paper we investigate integral means inequalities for the integral operators $Q_{\lambda}^{\mu}$ and $P_{\lambda}^{\mu}$ applied to suitably normalized analytic functions. Further, we obtain some neighborhood and inclusion properties for a class of functions $G{\alpha}({\phi}, {\psi})$ (defined below). Several corollaries exhibiting the applications of the main results are considered in the concluding section.
A Certain Subclass of Analytic Functions with Negative Coefficients and Fixed Points
RAINA, R.K...et al KYUNGPOOK UNIVERSITY 2000 Kyungpook mathematical journal Vol.40 No.1
This paper studies a new class of univalent analytic functions (defined below). A necessary and sufficient condition for a function to belong to such a class is obtained. The various results investigated include distortion theorems (involving also a certain fractional derivative operator), radius of convexity and certain other properties. Special cases of our results are also pointed out.
A Note on Multidimensional Fractional Calculus Operators Involving Gauss Hypergeometric Functions
Raina, R.K.,Chhajed, Pramod kr. Department of Mathematics 2005 Kyungpook mathematical journal Vol.45 No.1
Making use of the multidimensional fractional calculus operators introduced in [20], this paper gives the images under these operators of the celebrated Fox's H-function. Special cases are briefly point out, and some of the results are also studied on general spaces of functions $M_{\lambda}(R_{+}^n)$.
Effect of Antioxidant Fortification on Preservability of Buffalo Semen
Raina, V.S.,Gupta, A.K.,Singh, Kiran Asian Australasian Association of Animal Productio 2002 Animal Bioscience Vol.15 No.1
During the process of freezing, spermatozoa suffer cold shock which increases their susceptibility to lipid peroxidation which plays an important role in ageing of spermatozoa, shortening their life span and affecting the preservation of semen. An experiment was therefore conducted to study the effect of addition of natural antioxidants into semen diluents on the preservability of buffalo semen. Split semen samples were extended in milk egg yolk diluents fortified with vitamin E (MYE), vitamin C (MYC) and control group (MYO); Tris-egg yolk diluents fortified with vitamin E (TYE), vitamin C (TYC) and control group (TYO) and evaluated for their preservabilities at 4-7$^{\circ}C$ and $37^{\circ}C$. Overall least squares mean of percent motility observed after 0, 24, 48, 72 and 96 h of preservation at 4-7$^{\circ}C$ were 66.70, 54.00, 36.80, 21.90 and 12.50, respectively while the estimates for semen extended in MYE, MYC, MYO, TYE, TYC and TYO were 44.80, 42.70, 38.70, 36.00, 35.20 and 33.00 percent, respectively. The results showed that motility was significantly (p<0.01) affected by extender (extender-antioxidant combination) and preservation interval. Overall least squares mean percent motility observed after 0, 4, 8, 12 and 24 h of preservation at $37^{\circ}C$ were 68.50, 58.90, 45.00, 38.10 and 18.10 percent, respectively, while the estimates for semen extended in MYE, MYC, MYO, TYE, TYC and TYO were 48.20, 49.30, 46.80, 45.30, 42.30 and 42.50 percent, respectively. Extender and storage interval were found to be significantly (p<0.01) affecting spermatozoa motility on room temperature preservation. The results indicated that the incorporation of antioxidants, especially vitamin E, had beneficial effect on preservability of buffalo semen.
Formulation evaluation and optimization of fast disintegrating tablets of ketorolac tromethamine
Binu Raina,Abhimanyu Sharma,Prabhjot Singh Bajwa 한국약제학회 2018 Journal of Pharmaceutical Investigation Vol.48 No.6
In this study, we aimed to design fast disintegrating tablets (FDT) of ketorolac tromethamine (KT) to reduce gastric side effects of KT by physically associating it with phospholipon 80H (PL) by wet granulation. First preliminary batches were formulated to determine the effect of PL on tablet characteristics and to select best superdisintegrant among sodium starch glycolate and crospovidone. The effect of PL and maltodextrin (MD) concentrations on hardness, disintegration time and % drug release at 4 min was studied for the optimization of FDT. Optimization of FDT was done by employing 32 full factorial design using Design expert 10.1 software. The optimized batch of FDT showed disintegration time and percent release value of 37.33 ± 1.47 s and 42.74 ± 1.53% respectively. It was also found that 91.87% of drug was released within 10 min. Thus, by an appropriate combination of excipients, it was possible to formulate FDT capable of undergoing fast disintegration and having optimum hardness using simple and conventional techniques.
Aakrati Raina,Asheesh Sawhny,Saurav Paul,Sridevi Nandamuri 대한치과보존학회 2020 Restorative Dentistry & Endodontics Vol.45 No.1
Objectives: This study aimed to compare the shear bond strength (SBS) of a self-adhering flowable composite (Dyad Flow) and a bulk-fill flowable composite (Smart Dentin Replacement [SDR]) to several pulp-capping materials, including MTA Plus, Dycal, Biodentine, and TheraCal. Materials and Methods: Eighty acrylic blocks with 2-mm-deep central holes that were 4 mm in diameter were prepared and divided into 2 groups (n = 40 each) according to the composite used (Dyad Flow or SDR). They were further divided into 4 sub-groups (n = 10 each) according to the pulp-capping agent used. SBS was tested using a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed using 2-way analysis of variance. A p value of < 0.05 was considered to indicate statistical significance. Results: A statistically significant difference (p = 0.040) was found between Dyad Flow and SDR in terms of bond strength to MTA Plus, Dycal, Biodentine, and TheraCal. Conclusions: Among the 8 sub-groups, the combination of TheraCal and SDR exhibited the highest SBS.