An effective Key Frame Extraction technique based on Feature Fusion and Fuzzy-C means clustering with Artificial Hummingbird.

Key frame extraction is very important in video summarization and content-based video analysis to address the problem of data redundancy in a video. Key frame extraction enables quick navigation and expert video arrangement in many applications. The visually impaired can benefit from the use of key frame extraction for rapid object recognition and tracking.

UV and blue excited tunable emission of thermally stable Bi sensitized Eu doped calcium aluminozincate phosphor for photonic applications.

Bi/Eu co-driven calcium aluminozincate (CAZ) phosphor prepared by sol-gel route. Structural analysis was conducted based on X-ray diffractogram. Scanning Electron Microscope images were recorded using Carl Zeiss microscope.

Picolinic acid is a broad-spectrum inhibitor of enveloped virus entry that restricts SARS-CoV-2 and influenza A virus in vivo.

The COVID-19 pandemic highlights an urgent need for effective antivirals. Targeting host processes co-opted by viruses is an attractive antiviral strategy with a high resistance barrier. Picolinic acid (PA) is a tryptophan metabolite endogenously produced in mammals.

Deep red emission from rare-earth-free calcium aluminozincate phosphor with the substitution of Cr ion.

Chromium-doped calcium aluminozincate phosphor with a distinct amount of chromium was prepared the sol-gel technique. The phase analysis and morphological study along with optical properties were conducted on the prepared material. The room temperature luminescent traits of the sample were studied in detail under 540 nm excitation wavelength.

Electronic Structure Calculations of Static Hyper(Polarizabilities) of Substrate-Supported Group-IV and -V Elemental Monolayers.

The substrate-induced effects on the polarizability (α) and first dipole hyperpolarizability (β) of group-IV (i.e., graphene, silicene, germanene, stanene) and group-V (i.

Comparative Evaluation of Compressive Strength and Flexural Strength of GC Gold Hybrid, GIC Conventional and Resin-modified Glass-ionomer Cement.

Purpose: The aim of the study was to emphasize the compressive strength and flexural strength of glass-ionomer cement (GIC)-gold hybrid, conventional GIC, and resin-modified GIC (RMGIC).

Methodology: Three GIC materials were used in the study: group A: GC-gold hybrid (Gold Label hybrid Universal Restorative), group B: type II conventional GIC, and group C: RMGIC. A total of 120 cylindrical test specimens of dimensions 4 mm diameter × 6 mm height were prepared from a custom-made Teflon mold according to respective study groups.

Percutaneous Coronary Intervention in an Extremely Rare Case of Double Circumflex Coronary Arteries With Acute Myocardial Infarction.

The anomalous origin of the left circumflex (Cx) artery (LCX) from the right coronary sinus or the right coronary artery (RCA) has been reported as one of the most common congenital coronary anomalies. However, the occurrence of double or twin Cx coronary arteries has been sparsely reported in the literature. We describe a rare case of a middle-aged male with acute myocardial infarction (MI) who had double Cx coronary arteries, one arising from the RCA and the other from the left main coronary artery.

Isolated right ventricular myocardial infarction caused by occlusion of an anomalous non-dominant right coronary artery: successful management with percutaneous coronary intervention.

Isolated right ventricular myocardial infarction (RVMI) is a rare clinical presentation of acute coronary syndrome. A high index of suspicion is needed for its timely diagnosis and management to prevent serious complications like heart failure, cardiogenic shock, ventricular arrythmias or sudden cardiac death. Coronary anomalies are rare entities with a varied clinical presentation.

Double Whammy: Subacute Stent Thrombosis While Being Adherent to Dual Antiplatelet Therapy Including Ticagrelor, Followed by Multiple Coronary Artery Aneurysms in a COVID-19 Patient.

Coronavirus disease 2019 (COVID-19), although predominantly a respiratory illness, can have important cardiovascular implications, which include the development of myocardial injury/myocarditis, acute coronary syndromes, arrhythmias, pericarditis, and the occurrence of arterial and venous thrombosis. We describe a rare case of a middle-aged COVID-19 patient who developed sub-acute stent thrombosis after implantation of second-generation drug-eluting stents (DES) despite being adherent to dual antiplatelet therapy including ticagrelor and who subsequently developed multiple coronary artery aneurysms within a few weeks of the DES implantation.

Quality Improvement Initiative to Improve Hand Hygiene Compliance in Indian Special Newborn Care Unit.

Unlabelled: Pilot data on Hand hygiene (HH) compliance using a standard World Health Organisation checklist for 1-week suggested only 20% compliance. So, we planned a Quality Improvement study to improve HH compliance among health care providers in our Special Newborn Care Unit from 20% to 60% over 12 months.

Methods: We did this study in 3 phases: Baseline phase (2 months), Intervention phase (8 months), and Postintervention phase (2 months).

Characterization of oleosin genes from forage sorghum in Arabidopsis and yeast reveals their role in storage lipid stability.

Overexpression of forage sorghum oleosin genes in Arabidopsis oleosin-deficient mutant and yeast showed increased germination rate, triacylglycerol content, and protection against lipase-mediated TAG degradation. Plant lipids are an important source of ration for cattle or other livestock animals to fulfil their energy needs. Poor energy containing green forages are still one of the major sources of food for livestock animals, leaving the animals undernourished.

First-Principles Study of a MoS-PbS van der Waals Heterostructure Inspired by Naturally Occurring Merelaniite.

Vertically stacked, layered van der Waals (vdW) heterostructures offer the possibility to design materials, within a range of chemistries and structures, to possess tailored properties. Inspired by the naturally occurring mineral merelaniite, this paper studies a vdW heterostructure composed of a MoS monolayer and a PbS bilayer, using density functional theory. A commensurate 2D heterostructure film and the corresponding 3D periodic bulk structure are compared.

Enhanced nonlinear optical response of graphene-based nanoflake van der Waals heterostructures.

The nonlinear optical properties of van der Waals bilayer heterostructures composed of graphene/h-BN and graphene/phosphorene nanoflakes are investigated using time-dependent density functional theory. Our calculated results show a significant enhancement of the first-hyperpolarizability value, in heterostructures relative to the pristine nanoflakes at = 1064 nm. The calculated enhancement in optical nonlinearity mainly results from in-plane anisotropy induced by the interlayer electronic coupling between the adjacent nanoflake layers; a higher degree of anisotropy is induced by puckered phosphorene compared to atomically flat h-BN yielding value corresponding to the second harmonic generation of ∼50 pm V in the zigzag graphene/phosphorene bilayer heterostructure.

Innate Immune Subversion Strategies of Human Flaviviruses.

Flavivirus is a genus of medically important viruses, including Dengue virus (DENV), Zika virus (ZIKV), Yellow Fever virus (YFV), West Nile virus (WNV), Japanese encephalitis virus (JEV), etc. The global burden of these acute infection-causing viruses is ever-increasing. Primary febrile symptoms of most of these viruses can progress to hemorrhagic or neurological complications, and some like JEV, YFV have a greater than 15% mortality.

Mobilization of storage lipid reserve and expression analysis of lipase and lipoxygenase genes in rice (Oryza sativa var. Pusa Basmati 1) bran during germination.

Storage lipid mobilization by lipases and lipoxygenases (LOXs) in response to developmental cues take place during seed germination. After rice grain milling, the endogenous lipases and LOXs present in the bran fraction come in contact with the storage lipid reserve or triacylglycerol (TAG). Lipases catalyze the hydrolysis of TAGs to non-esterified fatty acids (NEFAs) and glycerol.

Novel phosphorus-based 2D allotropes with ultra-high mobility.

Electronic structure calculations based on density functional theory were performed to investigate structural, mechanical, and electronic properties of phosphorene-based large honeycomb dumbbell (LHD) hybrid structures and a new phosphorene allotrope, referred to as ψ″-P. The LHD hybrids (i.e.

Stability and carrier transport properties of phosphorene-based polymorphic nanoribbons.

Few-layer black phosphorene has recently attracted significant interest in the scientific community. In this paper, we consider several polymorphs of phosphorene nanoribbons (PNRs) and employ deformation potential theory within the effective mass approximation, together with density functional theory, to investigate their structural, mechanical and electronic properties. The results show that the stability of a PNR strongly depends on the direction along which it can be cut from its 2D counterpart.

van der Waals heterostructures based on allotropes of phosphorene and MoSe.

The van der Waals heterostructures of allotropes of phosphorene (α- and β-P) with MoSe (H-, T-, ZT- and SO-MoSe) are investigated in the framework of state-of-the-art density functional theory. The semiconducting heterostructures, β-P/H-MoSe and α-P/H-MoSe, form anti-type structures with type I and type II band alignments, respectively, whose bands are tunable with an external electric field. α-P/ZT-MoSe and α-P/SO-MoSe form ohmic semiconductor-metal contacts while the Schottky barrier in β-P/T-MoSe can be reduced to zero by an external electric field to form ohmic contacts which is useful to realize high-performance devices.

Effect of selenium application on arsenic uptake in rice (Oryza sativa L.).

Alluvial aquifers of the agrarian state of Punjab of southwestern arid zone used for irrigation of rice crops are rich in arsenic concentration. In the present study, rice (Oryza sativa L.) crops were raised in pots in a greenhouse with a purpose to study whether selenium (Se) application was effective in ameliorating As uptake.

Electronic structure engineering of various structural phases of phosphorene.

We report the tailoring of the electronic structures of various structural phases of phosphorene (α-P, β-P, γ-P and δ-P) based homo- and hetero-bilayers through in-plane mechanical strains, vertical pressure and transverse electric field by employing density functional theory. In-plane biaxial strains have considerably modified the electronic bandgap of both homo- and hetero-bilayers while vertical pressure induces metallization in the considered structures. The γ-P homo-bilayer structure showed the highest ultimate tensile strength (UTS ∼ 6.

Development and evaluation of targeting ligand-anchored CNTs as prospective targeted drug delivery system.

Our main investigation in the present research was to developt and evaluate targeting ligand-anchored multiwalled carbon nanotubes (MWCNTs) as prospective targeted drug delivery system, with a special focus on the MWCNTs surface functionalization (FA-PEG bis-amine functionalized, carboxylated MWCNTs). In vitro release of 5-fluorouracil (5-FU) was studied at pH 7.4 phosphate buffer and 5.

Effect of incorporating hydrothermal, kilned and defatted oats on antioxidant and chapatti making properties of wheat flour.

Oats were subjected to treatments like defatting, hydrothermal cooking and kilning, milled into flour and then the control and treated flours were incorporated into wheat flour at 25% and 50% levels and chapatti making behaviour and antioxidant properties were studied. The treatments significantly affected the antioxidant properties of oats. Incorporating oat flours to wheat increased total phenolic content but lowered the antioxidant activity however both were decreased significantly upon baking.