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Singh, Manjeet,Rana, Tanka R.,Kim, SeongYeon,Kim, Kihwan,Yun, Jae Ho,Kim, JunHo American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.20
<P>Silver nanowire (AgNW) film has been demonstrated as excellent and low cost transparent electrode in organic solar cells as an alternative to replace scarce and expensive indium tin oxide (ITO). However, the low contact area and weak adhesion with low-lying surface as well as junction resistance between nanowires have limited the applications of AgNW film to thin film solar cells. To resolve this problem, we fabricated AgNW film as transparent conductive electrode (TCE) by binding with a thin layer of sputtered ZnO (40 nm) which not only increased contact area with low-lying surface in thin film solar cell but also improved conductivity by connecting AgNWs at the junction. The TCE thus fabricated exhibited transparency and sheet resistance of 92% and 20 Omega/boxed dot], respectively. Conductive atomic force microscopy (C-AFM) study revealed the enhancement of current collection vertically and laterally through AgNWs after coating with ZnO thin film. The CuInGaSe2 solar cell with TCE of our AgNW(ZnO) demonstrated the maximum power conversion efficiency of 13.5% with improved parameters in comparison to solar cell fabricated with conventional ITO as TCE.</P>
A Formal Policy Oriented Access Control Model for Secure Enterprise Network Environment
Manpreet Singh,Manjeet Singh Patterh,Tai-Hoon Kim 보안공학연구지원센터 2009 International Journal of Security and Its Applicat Vol.3 No.2
In this paper we use Security Evaluation Criteria as basis to develop the Network access control model for enterprise wide network computing environment. The Network access control model addresses both the access control and information flow control requirements of the enterprise network system. The security architecture of the model attempts to ensure authorized access to network resources and secure flow of information between network entities. The underlying concept of the Network access control model relies on the separation of the access control mechanism from the access control policy. This enables support for multiple access control policies within a single model specification. A further advantage of Network Access control model is that it is highly extensible, since it can be augmented with any new policy that a specific application or a user may require. The precision property is satisfied as network access control model is written in a formal mathematical notation. The property of simplicity is satisfied as only the security properties related to network computing system are modeled.
New polymer electrolyte for electrochemical application
Pramod K. Singh,이희우,Manjeet Singh,Vivek K. Singh,Karan Surana,B. Bhattacharya 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.3
A solid polymer electrolyte consisting of poly vinylpyrrolidone (PVP) and potassium iodide (KI) were developed, characterized for possible application in dye sensitized solar cell (DSSC) as an electrolyte. Complex impedance spectroscopy revealed the enhancement in electrical conductivity (s) by salt doping and a conductivity maximum was obtained at 30 wt% KI concentration. Dielectric phenomena also support the s data. Fourier transform infrared spectroscopy (FTIR) confirmed the composite nature of polymer electrolyte film. Using maximum electrical conductivity film we have fabricated a DSSC which shows 0.14% efficiency at 1 sun condition.
Kumar, Manjeet,Yun, Ju-Hyung,Bhatt, Vishwa,Singh, Bikramjeet,Kim, Joondong,Kim, Joohn-Sheok,Kim, Byung Soo,Lee, Chang Yeon Elsevier 2018 ELECTROCHIMICA ACTA Vol.284 No.-
<P><B>Abstract</B></P> <P>In this article, different sized CeO<SUB>2</SUB> nanoparticles were synthesized using one step low-cost solvothermal method with various reaction time. Defect states were induced due to the reduction of Ce<SUP>4+</SUP> into Ce<SUP>3+</SUP> valence state. X-ray photoelectron spectroscopy results recommend that Ce<SUP>3+</SUP> valence states and defects in the form of oxygen vacancies be present on the surface of CeO<SUB>2</SUB> nanoparticles. Such availability of oxygen vacancies provided high specific capacitance 142.5 Fg<SUP>-1</SUP> at a current density of 0.25 Ag<SUP>-1</SUP> in three electrode system using 1 M Na<SUB>2</SUB>SO<SUB>4</SUB> electrolyte. There is an increase in faradaic reactions taken place on the surface which is attributed to the high surface area, more oxygen vacancies, and increased diffusion rate. The highest energy density is obtained to be ∼12.68 Wh/kg, and the stability result confirmed that the capacitance retention is ∼75% after 1000 cycles of operation. These results indicate that CeO<SUB>2</SUB>@20h NPs is a potential candidate as electrode materials for supercapacitor applications due to their fast mutation between Ce<SUP>4+</SUP> to Ce<SUP>3+</SUP> oxidation state.</P>
Horsley Hills : Tourists’ Perception
S.Kumaran,Manjeet Singh 한국문화관광학회 2022 문화관광연구 Vol.24 No.1
This research has been conducted on perception of tourist about hill station to understand the profile of the tourist visiting Horsley Hill and their opinion about infrastructure facilities, cost of stay, food and hygienic conditions. Based on the findings of the research, suggestions have been provided for the better tourism development. The revenue of the Horsley Hills can be get improved by effective implementation of the suggestions provided in the research.
A Study on Tourism Facilities at Courtallam: the Spa of South India
S.Kumaran,Manjeet Singh 세계문화관광학회 2019 International Journal of Culture and tourism Resea Vol.12 No.1
Waterfalls tourism is becoming popular at global level. Among the various waterfalls in our country, Courtallam has a unique characteristic of healing some of the health ailments. Every year the number of tourists visiting Courtallam is increasing, there is greater scope for the development of the destination and tourism business as well. By improving the cleanliness and hygiene condition of the destination and also by implementing the suggestions provide in the research study, the inflow of the visitors will be improved and there by the local revenue will be increased remarkably
Vinod Kumar Malik,Manjeet Singh,Karambir Singh Hooda,Naresh Kumar Yadav,Prashant Kumar Chauhan 한국식물병리학회 2018 Plant Pathology Journal Vol.34 No.2
Maize (Zea mays L.; 2N=20) is major staple food crop grown worldwide adapted to several biotic and abiotic stresses. Maydis leaf blight (MLB) and banded leaf and sheath blight (BLSB) are serious foliar fungal diseases may cause up to 40% and 100% grain yield loss, respectively. The present studies were undertaken to work out the efficacy of chemicals, botanicals and bioagents for the management of MLB and BLSB under field condition for two seasons Kharif 2014 and 2015. Five molecules (propiconazole 25 EC, hexaconazole 25 EC, carbendazim 50 WP, mancozeb 75 WP and carbedazim 12 WP + mancozeb 63 WP), two bioagents i.e. Trichoderma harzianum and T. viridae and three botanicals namely azadirachtin, sarpagandha and bel pathar were tested for their efficacy against MLB. Eight newer fungicides viz., difenconazole 250 SC, hexaconazole 5 EC, carbendazim 50WP, validamycin 3 L, tebuconazole 250 EC, trifloxystrobin 50 WG + tebuconazole 50 WG, azoxystrobin 250 EC and pencycuron 250 SC were evaluated against BLSB. Analysis revealed significant effects of propiconazole at 0.1%, carbendazim 12 WP + mancozeb 63 WP at 0.125% and sarpagandha leaves at 10% against MLB pathogen, whereas validamycin at 0.1% and trifloxystrobin 25 WG + tebuconazole 50 WG at 0.05% were found effective against BLSB. The slow rate of disease control virtually by the bioagents might have not shown instant effect on plant response to the yield enhancing components. The identified sources of management can be used further in strengthening the plant protection in maize against MLB and BLSB.