A social relationship-based energy efficient routing scheme for Opportunistic Internet of Things

Rani,Amita Malik 한국통신학회 2023 ICT Express Vol.9 No.4

Opportunistic Internet of Things (OppIoT) combines Opportunistic Networks and the Internet of Things to provide opportunistic communication between IoT devices and human-created communities in order to improve network connectivity, reliability, and longevity. This is significant because it introduces a new approach to connect and communicate smart devices in situations where there is no end-to-end connectivity. Due to the non-stable existence of connectivity between nodes, building a scalable, flexible, interoperable, and energy efficient routing protocol is a difficult issue. This study presents a new routing protocol for the Opportunistic Internet of Things called Social relationship based Energy Efficient Routing (SEER), which bases routing decisions on the forwarding feasibility degree, residual energy, and buffer capacity of nodes. SEER surpasses EBR and EDR in terms of delivery probability, hop count, and overhead ratio, according to simulation results utilizing the Opportunistic Network Environment (The ONE) simulator.

ID- Based Authentication for WiMAX

Pushpi Rani1,Brijesh Kumar Chaurasia,Geetam Singh Tomar 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.2

WiMAX is broadband wireless system being used for long range wireless networking, which makes this system vulnerable to security breaches. In this paperwe present authentication scheme using ID-based signature scheme for WiMAX, which offers a certificate-less public key verification. The proposed scheme has also increased message processing throughput as it has used elliptic curve cryptosystem, sigencryption and identity based cryptography.

Excess molar enthalpies of binary mixtures of formamide with butanol at 298.15 K: Application of Prigogine–Flory–Patterson theory and Treszczanowicz–Benson association model

Manju Rani,Sanjeev Maken,Shalu Agarwal,Priyanka Lahot 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.5

Excess molar enthalpies (HEm ) of formamide (1) + 1-butanol or 2-methyl-1-propanol or 2-methyl-2-propanol (2) mixtures have been measured at 298.15 K over the entire composition range using flow micro calorimeter. The excess enthalpy data along with previously published excess volumes data (VEm )(M. Rani, S. Maken, J. Ind. Eng. Chem. 18 (2012) 1694) have been utilised to study the thermodynamics of molecular interactions in terms of Prigogine–Flory–Patterson theory and Treszczanowicz–Benson association model with a Flory contribution term. The Treszczanowicz–Benson model was developed for alkane + alkanol systems considering Mecke–Kempter type of association in alkanol. In this paper the Treszczanowicz–Benson association model was applied, for the first time, to binary mixtures containing both components associated (butanol and formamide) through hydrogen bonding. In both the cases,when either of formamide or butanol was assumed to be associated, the calculated HEm and VEm values compared reasonably well with the corresponding experimental data, but the agreement is not very impressive for excess enthalpy in formamide + 2-methyl-2-propanol mixtures. Extent of inter-molecular H-bonding in formamide and butanols in their binary mixtures was also reflected in their molar enthalpy of association of H-bonding Dh0H.

Management of Greying of Hairs (Sheeb) and Use of Hair Dyes (Khizaab) in Unani Medicine

Rani, Seema Cellmed Orthocellular Medicine and Pharmaceutical 2018 셀메드 (CellMed) Vol.8 No.2

Greying of hairs or Canities (Sheeb) is a hair disorder characterized by premature graying of scalp hair, beard, moustache etc. In Unani system of medicine (USM), the causes of premature greying of hairs, concept behind graying of hairs, principles of treatment, preparations that prevent premature greying of hairs, regimen, systemic and local treatment to stimulate pigmentation and the most interesting point is the use of different type of hair dyes (khizabat) is all illustrated. Classical texts described black, red, blond and white hair dye preparations with formulae and method of use. Initially for the hair graying management, utilizing simple and complex substances from plants, minerals, metals and mixture of these was the main method, which satisfied the desire to change the colour of the hair. With the advancement in chemical science, dyes formulaes, method of formation and application are changed. But due to the awareness about demerits of chemical dyes, people are looking back towards the natural ways to combat hair greying and herbal hair dye is an alternative. This paper is an overview of Unani drugs of local and internal use for hair greying with special attention towards herbal dyes. Most commonly used herbs in khizaab with their actions and constituents has been summarized. This is an effort to globalize the benefits of Unani herbs in hair greying problem. In short, International demand for hair dyes has been steadily growing and there is a wide scope for exploring different aspects of hair greying treatment and dyes in USM.

Tribological Properties of Ultrananocrystalline Diamond Films in Inert and Reactive Tribo-Atmospheres: XPS Depth-Resolved Chemical Analysis

Rani, Revati,Panda, Kalpataru,Kumar, Niranjan,Sankaran, Kamatchi Jothiramalingam,Ganesan, K.,Lin, I-Nan American Chemical Society 2018 The Journal of Physical Chemistry Part C Vol.122 No.15

<P>Tribological properties of diamond films are sensitive to the chemically reactive and inert tribo-atmospheric media, and therefore, it is difficult to understand the underlying tribological mechanisms. In the present work, tribological properties of surface-modified ultrananocrystalline diamond (UNCD) thin films were investigated in four distinct tribo-environmental conditions of ambient humid-atmosphere, nitrogen (N<SUB>2</SUB>), argon (Ar), and methane (CH<SUB>4</SUB>) gases. The in situ depth-resolved X-ray photoelectron spectroscopy (XPS) showed the desorption of oxygen and oxy-functional additives and sputtering of weakly bonded amorphous carbon species from the UNCD film surface after the Ar<SUP>+</SUP>-ion sputtering process. After desorption of these chemical entities, friction and wear were decreased and run-in regime cycles became shorter in UNCD films. Friction in the ambient humid-atmosphere was higher compared to other tribo-environmental conditions, and it was explained by the oxidation mechanism of the sliding interfaces and the formation of the oxidized carbon transferfilm. However, low friction and wear in the N<SUB>2</SUB> atmosphere was associated with the adsorption of N<SUB>2</SUB> species, forming nitrogen-terminated carbon bonds at the sliding interfaces. This was directly investigated by XPS and energy dispersive X-ray spectroscopy techniques. Furthermore, low friction in the Ar atmosphere was explained by the physical adsorption of Ar gaseous species, which tend to avoid the covalent carbon bond formation across the sliding interfaces. Moreover, ultralow friction in the CH<SUB>4</SUB> atmosphere was governed by the passivation of dangling carbon bonds by dissociative CH<SUB>4</SUB> complexes, which creates hydrogen-terminated repulsive sliding interfaces. More importantly, a shorter run-in regime with low friction and wear in Ar<SUP>+</SUP>-ion-sputtered UNCD films were explained by desorption of the oxygen and oxy-functional groups, which are inherently present in the UNCD films.</P> [FIG OMISSION]</BR>

서울과 베이징 고농도 PM<SUB>2.5</SUB> 입자의 물리적 상태 비교

Rani Jeong,Yanting Qiu,Zhijun Wu,Yoonkyeong Ha,Changhyuk Kim,Haeri Kim,Sanjit Gaikwad,Kyoung-Soon Jang,Jiyi Lee,Joonyoung Ahn,Mijung Song 한국대기환경학회 2022 한국대기환경학회 학술대회논문집 Vol.2022 No.10

Smart Health: A Novel Paradigm to Control the Chickungunya Virus

Rani, Shalli,Ahmed, Syed Hassan,Shah, Sayed Chhattan IEEE 2019 IEEE Internet of things journal Vol.6 No.2

<P>Chikungunya is a mosquito instinctive disease that spreads hurriedly in various parts of the country. For the awareness and prevention measure of this disease a new paradigm in Smart Health (S-Health) required to be devised. The auspicious prospective of evolving Internet of Things (IoT) technologies for interconnected heterogeneous devices and objects has played a vital role in the next generation health care systems for eminent patient care to protect the citizens from these types of diseases. Still there is a need for real time health monitoring to analyze the patients for early preventive measures and precautions for healthy life. S-Health care IoT has substantial impending for the cognizance of analogues monitoring. It includes the interconnected apps, objects (devices and people), communication technologies, tracking system, and patients’ knowledge base. This paper presents an IoT-enabled model where data collected from the sensors, objects, and people will be gathered at the cloud to take the preventive actions by healthcare professionals. Precautionary measures will be taken by collecting the information about causes of growth of mosquitoes. The suitability of the approach is validated at the base layer of the IoT and data is transmitted to the cloud with the help of edge nodes. From simulations, it is endorsed that the proposed approach is better over ME-CBCCP protocol.</P>

Genomic potential of Marinobacter salinus Hb8^T as sulfur oxidizing and aromatic hydrocarbon degrading bacterium

Rani, S.,Jeon, W.J.,Koh, H.W.,Kim, Y.E.,Kang, M.S.,Park, S.J. Elsevier Science B.V. Amsterdam 2017 MARINE GENOMICS Vol.34 No.-

Marinobacter salinus Hb8<SUP>T</SUP> was isolated from a tidal flat and its complete genome sequence was obtained using the PacBio RS II platform. The length and G+C content of the complete circular chromosome were about 4.12Mbp and 55.9%, respectively. Genomic analysis showed the strain has degradation capabilities for urea, aromatic and reduced sulfur compounds. These results reveal its potential application in biotechnology. Finally, the genome sequence of M. salinus Hb8<SUP>T</SUP> provides the fundamental genomic information for future studies.

Effects of high glucose with or without other metabolic substrates on alpha-adrenergic contractions in rat mesenteric and femoral arteries

Rany Vorn Hae Young Yoo 대한생리학회-대한약리학회 2017 The Korean Journal of Physiology & Pharmacology Vol.21 No.1

Hyperglycemia is associated with an increased risk of cardiovascular diseases. It has been demonstrated that chronic exposure to high glucose impaired endothelial functions. However, specific effects of short-term exposure to high glucose on vascular reactivity are controversial. Moreover, the combined effects of other metabolic substrates such as free fatty acids (FFA) on vascular reactivity remain poorly understood. Here we investigate the effects of short-term exposure to high glucose with or without other metabolic substrates including FFAs termed “nutrition full” (NF) solution, on mesenteric (MA) and deep femoral arteries (DFA) of rats. Arterial ring segments were mounted in a double-wire myograph. Contraction in response to phenylephrine (PhE) was determined in control (5 mM) and high glucose (23 mM, HG) environments over a 30 min period. In both arteries, PhE-inducedvasocontraction was enhanced by pre-incubation of HG solution. A combined incubation with HG and palmitic acid (100 mM) induced similar sensitization of PhE-contractions in both arteries. In contrast, high K⁺-induced contractions were not affected by HG. Interestingly, pre-incubation with NF solution decreased PhE-induced contraction in MA but increased the contraction in DFA. In NF solution, the HG-induced facilitation of PhE-contraction was not observed in MA. Furthermore, the PhE-induced contraction of DFA was attenuated by HG in NF solution. Our results demonstrate that the sensitization of PhE-induced arterial contraction by HG is differentially affected by other metabolic substrates. The conversation of skeletal arterial contractility by HG in NF solution requires careful interpretation of the previous in vitro studies where only glucose is included in physiological salt solutions. Further studies are required to elucidate the mechanism underlying the inconsistent effect of NF solution on MA and DFA.

Layer-by-Layer Self-Assembled Graphene Multilayers as Pt-Free Alternative Counter Electrodes in Dye-Sensitized Solar Cells

Rani, Adila,Chung, Kyungwha,Kwon, Jeong,Kim, Sung June,Jang, Yoon Hee,Jang, Yu Jin,Quan, Li Na,Yoon, Minji,Park, Jong Hyeok,Kim, Dong Ha American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.18

<P>Low cost, charged, and large scale graphene multilayers fabricated from nitrogen-doped reduced graphene oxide N-rGO(+), nitrogen and sulfur codoped reduced graphene oxide NS-rGO(+), and undoped reduced graphene oxide rGO(-) were applied as alternative counter electrodes in dye-sensitized solar cells (DSSCs). The neat rGO-based counter electrodes were developed via two types of layer-by layer (LBL) self-assembly (SA) methods: spin coating and spray coating methods. In the spin coating method, two sets of multilayer films were fabricated on poly(diallyldimethylammonium chloride) (PDDA)-coated fluorine-doped tin oxide (FTO) substrates using GO(-) combined with N-GO(+) followed by annealing and denoted as [rGO(-)/N-rGO(+)](n) or with NS-GO(+) and denoted as [rGO(-)/NS-rGO(+)](n) for counter electrodes in DSSCs. The DSSCs employing new types of counter electrodes exhibited similar to 7.0% and similar to 6.2% power conversion efficiency (PCE) based on ten bilayers of [rGO(-)/N-rGO(+)](10) and [rGO(-)/NS-rGO(+)](10), respectively. The DSSCs equipped with a blend of one bilayer of [rGO(-):N-rGO(+)] and [rGO(-):NS-rGO(+)] on PDDA-coated FTO substrates were prepared from a spray coating and showed similar to 6.4% and similar to 5.6% PCE, respectively. Thus, it was demonstrated that a combination of undoped, nitrogen-doped, and nitrogen and sulfur codoped reduced graphene oxides can be considered as potentially powerful Pt-free electrocatalysts and alternative electrodes in conventional photovoltaic devices.</P>