Security Protocols for Mobile Communications

Priyadharshini, M.; Divya, R.; Ponmurugan, P.; Balamurugan, S.

doi:10.1002/9781119555759.ch12

Cited by 7 publications

(8 citation statements)

References 46 publications

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“…This area has substantial topographic relief, with the elevation ranging from sea level to 8000 m above sea level in the Himalayas. The climate is also spatially different, varying from extremely arid regions to extremely humid regions, from extremely hot to extremely cold, and from drought-prone areas to flood-prone areas [51]. A large proportion of annual rainwater in the region comes from summer monsoons [52].…”

Section: Topographymentioning

confidence: 99%

Differential Impacts of Climatic and Land Use Changes on Habitat Suitability and Protected Area Adequacy across the Asian Elephant’s Range

Yang

Jing

et al. 2022

Sustainability

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Climate change and human activities have caused dramatic impacts on biodiversity. Although a number of international agreements or initiatives have been launched to mitigate the biodiversity loss, the erosion of terrestrial biome habitats is inevitable. Consequently, the identification of potential suitable habitats under climate change and human disturbance has become an urgent task of biodiversity conservation. In this study, we used the maximum entropy model (MaxEnt) to identify the current and potential future habitats of Asian elephants in South and Southeast Asia. We performed analyses for future projections with 17 scenarios using the present results as baseline. To optimize the modelling results, we delineated the core habitats by using the Core Mapper Tool and compared them with existing protected areas (PAs) through gap analysis. The results showed that the current total area of core habitats is 491,455 km2 in size and will be reduced to 332,544 km2 by 2090 under SSP585 (the shared socioeconomic pathway). The projection analysis under differential scenarios suggested that most of the core habitats in the current protected areas would remain stable and suitable for elephants in the future. However, the remaining 75.17% of the core habitats lay outside the current PAs, and finally we mapped approximately 219,545 km2 of suitable habitats as priority protected areas in the future. Although our model did not perform well in some regions, our analyses and findings still could provide useful references to the planning of protected areas and conservation of Asian elephant.

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Section: Topographymentioning

confidence: 99%

Differential Impacts of Climatic and Land Use Changes on Habitat Suitability and Protected Area Adequacy across the Asian Elephant’s Range

Yang

Jing

et al. 2022

Sustainability

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“…Aptasensors provide rapid and sensitive detection of various pathogens [20,[35][36][37][38]. Aptamers are compatible with a huge variety of analytical techniques.…”

Section: Discussionmentioning

confidence: 99%

“…Aptamer-based sensors (aptasensors) have been developed for a variety of targets with incredibly low limits of detection (LoD) and good analytical ranges of determination. Several reviews are recommended to compare different approaches and analytical techniques for aptamer-based detection of viruses [19,20].…”

Section: Introductionmentioning

confidence: 99%

Nanoisland SERS-Substrates for Specific Detection and Quantification of Influenza A Virus

Zhdanov,

Gambaryan,

Akhmetova

et al. 2023

Biosensors

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Surface-enhanced Raman spectroscopy (SERS)-based aptasensors for virus determination have attracted a lot of interest recently. This approach provides both specificity due to an aptamer component and a low limit of detection due to signal enhancement by a SERS substrate. The most successful SERS-based aptasensors have a limit of detection (LoD) of 10–100 viral particles per mL (VP/mL) that is advantageous compared to polymerase chain reactions. These characteristics of the sensors require the use of complex substrates. Previously, we described silver nanoisland SERS-substrate with a reproducible and uniform surface, demonstrating high potency for industrial production and a suboptimal LoD of 4 × 105 VP/mL of influenza A virus. Here we describe a study of the sensor morphology, revealing an unexpected mechanism of signal enhancement through the distortion of the nanoisland layer. A novel modification of the aptasensor was proposed with chromium-enhanced adhesion of silver nanoparticles to the surface as well as elimination of the buffer-dependent distortion-triggering steps. As a result, the LoD of the Influenza A virus was decreased to 190 VP/mL, placing the nanoisland SERS-based aptasensors in the rank of the most powerful sensors for viral detection.

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“…The fluorescence maps were collected for a total time of 2 ms per pixel, with a pixel size of 20 µm. 1 H-NMR spectra (400 MHz) were measured in deuterated solvents using a Varian Inova 400 Spectrometer. J values are given in hertz.…”

Section: Methodsmentioning

confidence: 99%

“…Over the past few years, the unique chemical and biological properties of nanomaterials (NMs) has led to their ubiquitous presence in daily life. Amid the varied types of NMs, the II-VI semiconducting NMs have attracted much attention due to their outstanding electronic and optoelectronic properties [1][2][3]. In particular, one of the most widely used NMs of this type is cadmium selenide, as it has useful properties for biochemical sensors, biomedical imaging, photovoltaic applications, light-emitting diodes (LEDs), laser, thinfilm transistors, or solar cells [3,4].…”

Section: Introductionmentioning

confidence: 99%

Detecting CdSe Nanomaterials with a Fluorescent Schiff Base Ligand

et al. 2022

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We investigated the easily synthesized ligand H3L as a fluorescent chemosensor for the detection of CdSe nanoparticles (CdSe NPs) and L-cysteine-capped CdSe quantum dots (CdSe-Cys QDs) in ethanol–water samples. A drastic quenching of the fluorescence emission of H3L at 510 nm occurred, as a result of the addition of CdSe NPs and CdSe-Cys QDs. A solution of H3L (1.26 ppb) showed sensitive responses to both CdSe NPs and CdSe-Cys QDs, with limits of detection (LOD) as low as 40 and 62 ppb, respectively. Moreover, using a smartphone color recognizer application, the fluorescence intensity response of H3L-modified cellulose paper to CdSe-Cys QDs was recorded on a red channel (R), which allowed us to detect CdSe-Cys QDs with LOD = 15 ppb. Interference of some common metal nanomaterials (NMs), as well as metal ions, in the determination of CdSe NMs in solution was studied. The affinity of H3L to CdSe NPs and CdSe-Cys QDs was spectroscopically determined. Scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX), micro-X-ray fluorescence (µ-XRF), 1H-NMR, attenuated total reflection infrared spectroscopy (ATR-IR), and density functional theory (DFT) were also used to investigate the interaction of H3L with CdSe NMs.

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Security Protocols for Mobile Communications

Cited by 7 publications

References 46 publications

Differential Impacts of Climatic and Land Use Changes on Habitat Suitability and Protected Area Adequacy across the Asian Elephant’s Range

Differential Impacts of Climatic and Land Use Changes on Habitat Suitability and Protected Area Adequacy across the Asian Elephant’s Range

Nanoisland SERS-Substrates for Specific Detection and Quantification of Influenza A Virus

Detecting CdSe Nanomaterials with a Fluorescent Schiff Base Ligand

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