11 research outputs found
Generic Home Automation System Using IoT Gateway Based on Wi-Fi and ant+ Sensor Network
This research article explores the use of internet of things (IoT) technology in home automation, including cloud computing and sensor networks to improve quality of life, and the increasing affordability through mobile connectivity. In this proposed smart home system, our main objective is to build a home automation system for the common consumer, which can help him to use home appliances with confidence and control at a low cost. The paper describes the building of an IoT gateway using the ANT multi-hop wireless network protocol and the Wi-Fi protocol, specifically utilizing the nRF24L01 and Esp8266 chips. Various sensor nodes, such as a water tank level sensor, human presence sensor, smart LED door sensor, and smart switch, will be integrated into the system. The main goal of the research is to develop an affordable solution for smart home technology for everyday consumers
A Compact Circularly Polarized Multiband Microstrip Patch Antenna with Defective Ground Structure
In this paper, a novel double-layer multiband circularly polarized microstrip patch antenna is proposed. The design employs the concept of slotted patch fed with proximity coupled feed having defected ground plane (DGS). The proposed antenna achieves multiple operating frequency bands including FB1 (11.15 GHz), FB2 (4.17 GHz), FB3 (4.87 GHz) and FB4 (1.98 GHz). The proposed antenna has obtained bandwidth of 12.98%, 4.7%, 4.69% and 5.39% at FB1, FB2, FB3 and FB4 bands, respectively. The proposed antenna also exhibits circular polarization in the frequency band FB4. The 3dB ARBW of the antenna is 9.23% at 11.2 GHz. Finally, a metallic cavity is used with the antenna to achieve a unidirectional radiation pattern. The designed antenna radiation characteristics are verified with the experimental results
Quantitative crystal structure analysis of 1, 3, 4-thiadiazole derivatives
info:eu-repo/semantics/publishe
In-Band RCS Reduction and Isolation Enhancement of a 24 GHz Radar Antenna Using Metamaterial Absorber for Sensing and Automotive Radar Applications
Atriple-band lowradar cross-section (RCS) high
isolation antenna is proposed for 24 GHz ISM band sensing
and automotive radar applications. The proposed design consists
of 2 x 2 patch array that acts as transmit and receive
antennas. Low RCS and high isolation are achieved at 24 GHz
by designing a metamaterial absorber (MA), which consists
of a square ring with a resistor connected in its diagonal arm
for the absorption of electromagnetic waves. The proposed
MA shows near unity normalized impedance at 24.1 GHz with
90% absorptivity bandwidth of 1 GHz. An array of MA is
placed in between and around the transmit/receive antennas
to suppress surface current and reduce in-band RCS of the
radar sensor. The −10 dB impedance bandwidths of the tripleband
sensor antenna are 20.8 to 21.24 GHz, 23.94 to 24.55 GHz, and 27.18 to 27.5 GHz. The proposed sensor antenna
achieves isolation of 34 dB between the transmit and receive ports, and peak RCS reduction of 11 dB, as compared to
the reference antenna. The half-power beamwidth of the proposed sensor antenna is 38 for E-plane and 52 for H-plane
at 24 GHz
Not Available
Not AvailableChickpea (Cicer arietinum L.) contributes 75% of total pulse production.
Being cheaper than animal protein, makes it important in dietary requirement of
developing countries. Weed not only competes with chickpea resulting into drastic yield
reduction but also creates problem of harboring fungi, bacterial diseases and insect
pests. Chemical approach having new herbicide discovery has constraint of limited lead
molecule options, statutory regulations and environmental clearance. Through genetic
approach, transgenic herbicide tolerant crop has given successful result but led to serious
concern over ecological safety thus non-transgenic approach like marker assisted
selection is desirable. Since large variability in tolerance limit of herbicide already exists
in chickpea varieties, thus the genes offering herbicide tolerance can be introgressed in
variety improvement programme. Transcriptome studies can discover such associated
key genes with herbicide tolerance in chickpea. This is first transcriptomic studies of chickpea or even any legume crop using
two herbicide susceptible and tolerant genotypes exposed to imidazoline (Imazethapyr).
Approximately 90 million paired-end reads generated from four samples were processed
and assembled into 30,803 contigs using reference based assembly. We report 6,310
differentially expressed genes (DEGs), of which 3,037 were regulated by 980 miRNAs,
1,528 transcription factors associated with 897 DEGs, 47 Hub proteins, 3,540 putative
Simple Sequence Repeat-Functional Domain Marker (SSR-FDM), 13,778 genic Single
Nucleotide Polymorphism (SNP) putative markers and 1,174 Indels. Randomly selected
20 DEGs were validated using qPCR. Pathway analysis suggested that xenobiotic
degradation related gene, glutathione S-transferase (GST) were only up-regulated in
presence of herbicide. Down-regulation of DNA replication genes and up-regulation of
abscisic acid pathway genes were observed. Study further reveals the role of cytochrome
P450, xyloglucan endotransglucosylase/hydrolase, glutamate dehydrogenase,
methyl crotonoyl carboxylase and of thaumatin-like genes in herbicide resistance.Reported DEGs can be used as genomic resource for future discovery
of candidate genes associated with herbicide tolerance. Reported markers can be used
for future association studies in order to develop marker assisted selection (MAS) for
refinement. In endeavor of chickpea variety development programme, these findings can
be of immense use in improving productivity of chickpea germplasm.Not Availabl