Daejeon, South Korea
Daejeon, South Korea

Hannam University is a private Christian university in Daejeon, South Korea. It was founded in 1956. Wikipedia.

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Singu B.S.,Hannam University | Yoon K.R.,Hannam University
Journal of Alloys and Compounds | Year: 2017

Mesoporous, uniform manganese oxide nanosphere thin films were grown on a stainless-steel substrate using the successive ionic layer adsorption and reaction (SILAR) method. The amorphous manganese oxide nanosphere thin films (AMONTFs) were characterized by grazing incidence X-ray diffraction (GI-XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The GI-XRD analysis reveals that the manganese oxide nanosphere thin films were present in the forms of α-MnO2and γ-MnO2. XPS demonstrates that the thin films contain a mixture of manganese oxides: MnO2(Mn4+) and MnOOH (Mn3+). The effect of the number of SILAR cycles on the morphology was observed systemically by FE-SEM and greatly influences the size of these unique nanospheres. The electrochemical properties of the AMONTF electrodes were analyzed by cyclic voltammetry (CV) and the galvanostatic charge-discharge (CD) method. The outcomes of the FE-SEM and electrochemical measurements reveal that the thin film obtained after 60 SILAR cycles has a uniform nanosphere size distribution and large specific capacitance. The manganese oxide thin films exhibit a maximum specific capacitance, energy, and power density of 262.0 F g−1, 18.3 Wh kg−1, and 7999.4 W kg−1, respectively, in an aqueous 1 M Na2SO4electrolyte solution. © 2016


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2014

In this paper we introduce the twisted (h, q)-tangent numbers n,q,w and polynomials Tn (h , q ) ,w(x). Some interesting results and relationships are obtained. © 2014 C. S. Ryoo.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the q-tangent numbers Tn,q and polynomials Tn,q(x). Some interesting results and relationships are obtained. © 2013 C. S. Ryoo.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the (h, q)-tangent numbers T(h) n,q and polynomials T(h) n,q (x). Some interesting results and relationships are obtained. © 2013 C. S. Ryoo.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the generalized twisted q-Euler numbers E(α)/n,χ,q,w and polynomials E(α)/n,χ,q,w(x). © 2013 Lhachmi El Badri et al.


Ryoo C.S.,Hannam University
Advanced Studies in Theoretical Physics | Year: 2013

In this paper we introduce the tangent numbers Tn and polynomials Tn(x). Some interesting results and relationships are obtained. © 2013 C. S. Ryoo.


Patent
Hannam University, Electronics and Telecommunications Research Institute | Date: 2013-04-25

A method of reusing a frequency by allocating two orthogonal signal waveforms to the same frequency band is as follows. Two high-frequency ocean surface radars can be operated in the same frequency band without mutual interference by allocating a signal having an up-chirped LFM waveform and a signal having a down-chirped LFM waveform, having the same frequency band, to the two radars by employing an orthogonal characteristic between the two signals. Furthermore, a plurality of radars located within a distance within which interference is possible can be operated without mutual interference by combining and allocating two orthogonal signals and a plurality of frequency bands.


Patent
Genewel Co. and Hannam University | Date: 2011-09-21

Provided is a thermosensitive composition preventing tissue adhesion and a method for preparing the same, and, more particularly, a thermosensitive composition preventing tissue adhesion which further contains a drug selectively inhibiting inflammatory response and a method for preparing the composition, in which the composition is produced through a chemical reaction by adding a cross-linking agent to an aqueous solution which contains a block copolymer containing a polyethyleneoxide block having the ability to suppress tissue adhesion, and a polymer with 10,000 to 1,000,000 g/mol of molecular weight which can be mixed with the copolymer; the composition is characterized in that the difference of viscosity, absorbance of visible rays region, and stability between the upper and lower liquid layers are within 10 % when centrifuging the composition; and also the method for preparing the composition enhances cross-linking homogenization and viscosity stability through simultaneous spraying and stirring methods without a reaction retardant.


Patent
Hannam University, Electronics and Telecommunications Research Institute | Date: 2012-05-11

A plug and play sensor module and sensor node are provided. The plug and play sensor module includes a sensor, a sensor interface that transmits and receives a signal for plug and play connection to and from a sensor node, and a plug and play connection processing unit that transmits a signal for connection confirmation to the sensor node through the sensor interface when being connected to the sensor node, and transmits sensor identification (ID) information to the sensor node when a sensor ID is requested by the sensor node.


Patent
Hannam University and Hanyang University | Date: 2011-11-14

Disclosed are a benzobis(thiadiazole)-based alternating copolymer, a method for preparing the same, and an organic electronic device including the same. The present disclosure provides a benzobis(thiadiazole)-based alternating copolymer represented by the chemical formula 1:

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