Initiating Knowledge Management in Colleges and Universities

Naresh K. Agarwal,Laila N. Marouf 건국대학교 지식콘텐츠연구소 2014 International Journal of Knowledge Content Develop Vol.4 No.2

Knowledge Management (KM) is a collaborative and integrated approach adopted at various levels to ensure that an organization’s knowledge assets are best utilized to increase organizational performance. While KM has been adopted in a large number of sectors and organizations, colleges and universities, and the higher education sector in general, is yet to take full advantage of the possibilities offered by KM. Also, while past research has sought to highlight the importance of implementing KM in higher education, there is a lack of a single, clear template for KM implementation that universities leaders and administrators can adopt. The contribution of the paper is a practical, actionable, step-by-step plan, as well as a diagrammatic, theoretical framework for initiating KM successfully in colleges and universities.

Asymmetric and symmetric modified bow‐tie slotted circular patch antennas for circular polarization

Naresh K. Darimireddy,R. Ramana Reddy,A. Mallikarjuna Prasad 한국전자통신연구원 2018 ETRI Journal Vol.40 No.5

Modern communication systems employ wideband antennas with circular polarization (CP) radiation. In this work, asymmetric modified bow‐tie (ABT) and symmetric modified bow‐tie (SBT) slotted circularly polarized single‐point probe‐fed circular patch antennas with dimensions of 40 mm × 40 mm for wideband applications are proposed. A 10 dB RL bandwidth of 350 MHz with CP, 3 dB axial ratio (AR) bandwidth of 100 MHz, peak gain of 4.9 dBic, and 10 dB RL bandwidth of 530 MHz with CP, 3 dB AR bandwidth of 140 MHz, peak gain of 5 dBic are obtained for ABT and SBT slotted circular patch antennas, respectively. The proposed SBT slotted patch is scaled up and down to 50 mm × 50 mm and 30 mm × 30 mm, respectively. The proposed scaled‐up version offers 10 dB RL and 3 dB AR bandwidths of 340 MHz and 80 MHz, with a peak gain of 5 dBic. The scaled‐down version offers 10 dB RL and 3 dB AR bandwidths of 710 MHz and 180 MHz, with a peak gain of 5.25 dBic. These prototypes are suitable to work in IEEE 802.11a WLAN, ISM, and IEEE 802.11ac applications. The measured and simulated results are then discussed and compared.

Defatted algal biomass as feedstock for short chain carboxylic acids and biohydrogen production in the biorefinery format

Naresh Kumar, A.,Min, Booki,Venkata Mohan, S. Elsevier 2018 Bioresource Technology Vol.269 No.-

<P><B>Abstract</B></P> <P>The objective of the study was to evaluate the potential application of defatted algal biomass (DAB) residue as a resource for biobased product synthesis in the biorefinery framework. Acid-catalyzed pretreatment of DAB residue resulted in higher reducing sugars (RS) solubilization (0.26 g RS/g DAB) than corresponding base method (0.19 g RS/g DAB). Subsequently, resulting RS were acidogenically fermented for the production of Bio-H<SUB>2</SUB> and short chain carboxylic acids (SCA)/volatile fatty acids (VFA) at varying redox conditions (pH: 6, 7 and 10). Biosystem with pH-6 resulted in higher SCA (0.54 g SCA/g RS) and Bio-H<SUB>2</SUB> production (0.83 l) followed by pH-10 (0.43 g SCA/g RS, 0.71 l) and pH-7 (0.27 g SCA/g RS, 0.48 l). Higher SCA production in pH-6 system resulted in maximum acidification (23%). Algal biomass majorly derived from CO<SUB>2</SUB> and its residues after lipids extraction accounted as major feedstock for acidogenic product synthesis. Evaluation of these studies using DAB residues offers sustainability to algal refineries on its entirety use.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Acid catalyzed pretreatment of DAB residues resulted in higher sugar solubilization. </LI> <LI> Higher biohydrogen production was resulted with pH-6 operation. </LI> <LI> Biosystem redox condition showed influence on SCA production and distribution. </LI> <LI> Use of DAB as a resource renders the sustainability to current algal biorefineries. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Deubiquitinating enzymes as cancer biomarkers: new therapeutic opportunities?

( Naresh Poondla ),( Arun Pandian Chandrasekaran ),( Kye-seong Kim ),( Suresh Ramakrishna ) 생화학분자생물학회(구 한국생화학분자생물학회) 2019 BMB Reports Vol.52 No.3

Cancer remains a life-threatening disease and accounts for the major mortality rates worldwide. The practice of using biomarkers for early detection, staging, and customized therapy may increase cancer patients’ survival. Deubiquitinating enzymes (DUBs) are a family of proteases that remove ubiquitin tags from proteins of interest undergoing proteasomal degradation. DUBs play several functional roles other than deubiquitination. One of the important roles of DUBs is regulation of tumor progression. Several reports have suggested that the DUB family members were highly-elevated in various cancer cells and tissues in different stages of cancer. These findings suggest that the DUBs could be used as drug targets in cancer therapeutics. In this review, we recapitulate the role of the DUB family members, including ubiquitin-specific protease, otubain protease, and important candidates from other family members. Our aim was to better understand the connection between DUB expression profiles and cancers to allow researchers to design inhibitors or gene therapies to improve diagnosis and prognosis of cancers. [BMB Reports 2019; 52(3): 181-189]

Evaluation of Ascorbic Acid Treatment in Clinical and Subclinical Mastitis of Indian Dairy Cows

Naresh, Ram,Dwivedi, S.K.,Swarup, D.,Patra, R.C. Asian Australasian Association of Animal Productio 2002 Animal Bioscience Vol.15 No.6

A study was carried out to assess the therapeutic effect of ascorbic acid in mastitis of dairy cows. The herd with a population of 250-275 lactating cows was screened for clinical and subclinical mastitis for a period of 5 months. Based on inclusion and exclusion criteria, eighteen animals each with clinical and subclinical mastitis in one quarter only were selected as study population. Twelve cows (group A) with normal udder and health were also selected as a healthy control. Clinical mastitis cows were grouped as B (n=12) and C (n=6). Cows of group B were treated with ascorbic acid at 25 mg/kg, subcutaneously for 5 consecutive days and intramammary infusion (Ampicillin sodium 75 mg and Cloxacillin sodium 200 mg/infusion) based on antibiotic sensitivity test, till complete recovery. Group C cows received only intramammary infusion till the complete recovery. Eighteen subclinical mastitis cows were divided in group D (n=12) and E (n=6). Cows of group D were treated with ascorbic acid at 25 mg/kg subcutaneously for 5 consecutive days while group E did not receive any treatment. California mastitis test (CMT), somatic cell count (SCC), physical changes of udder and milk were used to diagnose and classify the mastitis. Evaluation of the therapy was based on CMT score and physical changes of udder and milk. Sample size calculation was also performed but was not followed for control groups due to scarcity of cases. Adequate blinding was done when and where required to avoid the biases. Confounding variables like herd, age of the cow, stage of the lactation, season and geographical region were duly considered and adequate blocking was followed. Ascorbic acid was administered in clinical and subclinical cases even after cure considering its immunostimulatory and healing inducing effects. The recovery rate was faster in cases of clinical mastitis treated with ascorbic acid along with an intramammary infusion (group B) than the quarters of group C cows. Quarter wise the average duration/number (3.16${\pm}$0.11 days) of antimicrobial intramammary infusion was significantly (p<0.01) less in group B than that of average duration/number (5.33${\pm}$0.20 days) of group C. Subclinical mastitis cows treated with ascorbic acid showed 83.33% recovery while 16.77% did not respond to treatment till last day of study. Cows of group E (untreated) did not recovered from the mastitis. Subjective parameters viz. swelling, pain reflex of udder and physical changes in milk from quarter of ascorbic acid treated cows (group B) disappeared earlier than that of group C cows. It is concluded from this study that the ascorbic acid might be useful as an adjunct in case of clinical mastitis to get quick recovery with less number of intramammary infusions. High recovery rate in subclinical mastitis quarters of group D cows is appreciable and opens a new avenue to conduct further trials in a larger population in various field conditions. However, the pharmacology of ascorbic acid with particular reference to health of mammary gland needs to be investigated.

Application of flonicamid and Beauveria bassiana GHA to manage soybean insect pests without disturbing natural enemies

Naresh Dangi,Young Ha Woo,Souvic Sarker,M. Mahabur Rahman,Yong Jun Yu,Un Taek Lim 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.04

Negative effects of insecticides on non-target organism can be reduced by using selective and less toxic insecticides. We assessed the effect of subsequent application of flonicamid and Beauveria bassiana GHA on pests and natural enemies in soybean fields by recording their density in 6-8 d interval. Flonicamid controlled Aphis glycines Matsumura in 6 day after spray (DAS). Nymphs of Riptortus pedestris (F.) were also reduced by 46 and 48% in 12 and 19 DAS, respectively. Application of B. bassiana reduced R. pedestris nymph 50% in 16 DAS whereas adult R. pedestris, Medythia nigrobilineata Motschulsky and A. glycines were not significantly reduced in treated fields. Ladybird beetles, syrphid flies, hymenopteran wasps, and parasitism rate of R. pedestris eggs were not different between the treatment and control. These results suggest that flonicamid and B. bassiana showed less negative effect on the natural enemies and effective against aphids and nymphs stage of R. pedestris.

FE Modeling and Experimental Analysis of Residual Stresses in Vibration Assisted Turning of Ti6Al4V

Naresh Kumar Maroju,Vamsi Krishna Pasam 한국정밀공학회 2019 International Journal of Precision Engineering and Vol.20 No.3

Titanium alloys are widely employed in aerospace, marine and biomedical industries due to their durability and ability to sustain elevated operating temperature. Vibration assisted turning (VAT) is found to be an effective alternative to machine hard materials and promises significant process improvements compared to conventional turning (CT). This paper presents experimental studies and finite element simulations in turning of Ti6Al4V alloy with uncoated carbide tools. The influence of VAT on residual stress is evaluated in both experiment and simulation. The residual stresses are evaluated experimentally along the direction of cutting and perpendicular to the direction of cutting using X-ray diffraction analysis. 3-D finite element model is developed to predict cutting forces, temperature, and machining-induced stress field and the residual stresses. It is observed that the nature of residual stresses is predominantly compressive in VAT compared to CT, due to the reduced the cutting forces, effective stresses, and temperature.

Epitaxial Growth and Magnetodielectric Properties of Terbium-Iron-Garnet Thin Films

Naresh Kumar,정종훈,정명화,Namgun Kim,허남정,YongAn Park,Younghun Jo 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.1

We report on the (110)-oriented epitaxial growth of terbium-iron-garnet (Tb3Fe5O12, TbIG) thin films on Pt(111)/Gd3Ga5O12 (110) substrates by pulsed laser deposition, and their dielectric and magnetodielectric properties. High-quality TbIG thin films with clear interfaces can be achieved at a 750℃ substrate temperature and a 120 mTorr oxygen partial pressure, with subsequent annealing at 900℃ in air. The thickness of Pt is found to be crucial for epitaxial growth of TbIG and is optimized at 35 nm. The temperature-dependent dielectric constant shows a clear kink near 150 K due to a structural transition, similar to that of a single crystal. However, the magnetic feld dependence of the dielectric constant is an order of magnitude smaller than that of a single crystal and appears only when applied magnetic and electric felds are normal to the film plane, a sharp contrast to the case of a single crystal. We have attributed such differences to the rotation of magnetic easy axis from [1-11] to [110] and to the reduced magnetostriction due to the clamping effect from the substrate.

반추동물에서의 보조생식기술 (총설)

Naresh Kumar Singh,이성진 강원대학교 동물생명과학연구소(구 강원대학교 동물자원공동연구소) 2016 동물자원연구 Vol.27 No.1

It has been now believed and documented that high producing animals can be exploited even best if the heat period expressed in them could be synchronized. Recently, the development in the field of animal science and the introduction of newer technology such as assisted reproductive technology (ART) has immensely rationalized the importance of certain techniques by improvising them in order to benefit the production part from animals. Assisted reproductive technologies have not only benefitted a lot by increasing the production but also by addressing several problems of reproduction failure in farm animals. These technologies have also assisted in improving them and in accelerating genetic improvement among animal population. Techniques such as improved follicular efficiencies, ovum pick up, in vitro embryo production, embryo and semen sexing, somatic cell nuclear transfer and production of transgenic and cloned embryos have been now taken up as cost effective shape in accelerating genetic improvement in animal population and all such technologies have been overviewed and highlighted in this review.

NIR luminescence and energy transfer kinetics in Nd³⁺/Yb³⁺ co-doped sodium aluminium bismuth fluoro-borosilicate glasses

Naresh, V.,Lee, Nohyun Elsevier 2019 CERAMICS INTERNATIONAL Vol.45 No.17

<P><B>Abstract</B></P> <P>Here, we demonstrate the results pertaining to energy transfer kinetics in Nd<SUP>3+</SUP>/Yb<SUP>3+</SUP> ions combinedly doped in oxy-fluoride based sodium aluminum bismuth fluoro-borosilicate glasses. The thermal stability for the parent NABFBS glass is evaluated from TG-DTA measurement, and Raman & FT-IR spectral profiles were investigated to realize the influence of phonon energy of host NABFBS glass and OH<SUP>−</SUP> content on luminescence features of Nd<SUP>3+</SUP> and Yb<SUP>3+</SUP> ions. Upon pumping at 808 nm, Nd<SUP>3+</SUP> glasses displayed intense NIR emission for 1 mol% concentration at 903, 1068 and 1348 nm labeled to corresponding transitions <SUP>4</SUP>F<SUB>3/2</SUB>→<SUP>4</SUP>I<SUB>9/2</SUB>, <SUP>4</SUP>F<SUB>3/2</SUB>→<SUP>4</SUP>I<SUB>11/2</SUB> and <SUP>4</SUP>F<SUB>3/2</SUB>→<SUP>4</SUP>I<SUB>13/2</SUB>. Effect of multiphonon-, cross-relaxation and OH<SUP>−</SUP> group on Nd<SUP>3+</SUP> emission causing luminescence quenching above 1.0 mol % Nd<SUP>3+</SUP> is interpreted. The sensitizing effect of Nd<SUP>3+</SUP> emission on Yb<SUP>3+</SUP> luminescence is investigated by co-doping Nd<SUP>3+</SUP> ion (optimized to 1 mol%) with different Yb<SUP>3+</SUP> ion concentrations. The probability of energy-transfer (ET) between these ions has been substantiated by the considerable spectral overlap of Yb<SUP>3+</SUP> absorption and Nd<SUP>3+</SUP> emission, luminescence features, emission decay rates and energy level diagram. On co-doping Yb<SUP>3+</SUP> to Nd<SUP>3+</SUP>, the emission intensity of Yb<SUP>3+</SUP>is enhanced along with simultaneous decrement in Nd<SUP>3+</SUP> emission owing to transfer of Nd<SUP>3+</SUP> excitation energy. This process is further supported by the shortening of Nd<SUP>3+</SUP> life-times in co-doped glasses compared with individually Nd<SUP>3+</SUP> doped glasses. The probability of transfer of energy in Nd<SUP>3+</SUP> and Yb<SUP>3+</SUP> combinedly doped system is estimated along the same lines of Dexter's theory and Inokuti-Hirayama (I-H) fitting model for dipole-dipole coupling. The results reveal that, the energy-transfer mechanism from Nd<SUP>3+</SUP>(<SUP>4</SUP>F<SUB>3/2</SUB>)→Yb<SUP>3+</SUP>(<SUP>4</SUP>F<SUB>5/2</SUB>) is a non-radiative type governed by electric dipole-dipole interaction with phonon assistance. The energy transfer parameters, donor-acceptor coupling constant (<I>C</I> <SUB>DA</SUB>), energy-transfer efficiency (<I>η</I>) and probability of energy transfer (<I>P</I>) for co-doped glasses are computed from lifetime curves. In addition, back energy transfer Nd<SUP>3+</SUP>←Yb<SUP>3+</SUP> is also investigated.</P>