Boosting quantum efficiency and suppressing self-absorption in CdS quantum dots through interface engineering.

Applications of photoluminescence (PL) from semiconductor quantum dots (QDs) have faced the dichotomy of excitonic emission being susceptible to self-absorption and shallow defects reducing quantum yield (QY) catastrophically, and doped emissions sacrificing the tunability of the emission wavelength a quantum size effect, making it extremely challenging, if not impossible, to optimize all desirable properties simultaneously. Here we report a strategy that simultaneously optimizes all desirable PL properties in CdS QDs by leveraging interface engineering through the growth of two crystallographic phases, namely wurtzite and zinc blende phases, within individual QDs. These engineered interfaces result in sub-bandgap emissions ultrafast energy transfer (∼780 fs) from band-edge states to interface states protected from surface defects, enhancing stability and prolonging the PL lifetime.

Illiterate Addenbrooke's Cognitive Examination-III in Three Indian Languages: An Adaptation and Validation Study.

Background: Literacy is an important factor that predicts cognitive performance. Existing cognitive screening tools are validated only in educated populations and are not appropriate for older adults with little or no education leading to poor performance on these tests and eventually leading to misdiagnosis. This challenge for clinicians necessitates a screening tool suitable for illiterate or low-literate older individuals.

Semiochemicals from Trichosanthes anguina (Cucurbitaceae) plants influence behavior in Diaphania indica.

Background: First to third instars of Diaphania indica (Saunders) (Lepidoptera: Crambidae) feed on the lower surface of leaves, while fourth and fifth instars gregariously consume leaves of Trichosanthes anguina L. After defoliating, the caterpillar also attacks flowers and fruits of the plant and finally, results in loss of crop yield. Therefore, behavioral responses of D.

Optimal scheduling in demand-side management based grid-connected microgrid system by hybrid optimization approach considering diverse wind profiles.

Demand side management (DSM) is one of the trending economic strategies which shifts the elastic demand to the off-peak hours from the peak hours so as to reduce the overall generation cost of the system. The work done in this paper can be categorized in three phases. In the first phase, various wind speed to power conversion mathematical models available in literature are analysed to find out the one with maximum level of wind penetration.

Neutron star mass estimates from gamma-ray eclipses in spider millisecond pulsar binaries.

Reliable neutron star mass measurements are key to determining the equation of state of cold nuclear matter, but such measurements are rare. Black widows and redbacks are compact binaries consisting of millisecond pulsars and semi-degenerate companion stars. Spectroscopy of the optically bright companions can determine their radial velocities, providing inclination-dependent pulsar mass estimates.

Design and Development of Inexpensive Paper-Based Chemosensors for Detection of Divalent Copper.

Simple, portable, and low-cost paper-based sensors are alternative devices that have the potential to replace high-cost sensing technologies. The compatibility of the paper base biosensors for both chemical and biochemical accentuates its feasibility for application in clinical diagnosis, environmental monitoring, and food quality monitoring. High concentration of copper in blood serum and urine is associated with diseases like liver diseases, carcinomas, acute and chronic infections, rheumatoid arthritis, etc.

Do you see me? An inductive examination of differences between women of color's experiences of and responses to invisibility at work.

Intersectional invisibility is a salient experience for women of color in the workplace and stems from their nonprototypicality in gender and race. We expand research and theory on intersectional invisibility to propose that women of color vary in their degrees of nonprototypicality, and thus in their social power and their experiences of and responses to invisibility at work. We present an inductive interview study of a diverse sample of 65 women of color in the United States and Canada, who work in traditionally white and male professions.

Health status of persons with dementia and caregivers' burden during the second wave of COVID-19 pandemic: an Indian study.

Unlabelled: Due to the disruption of normal flow of treatment during the restrictions related to the coronavirus disease 2019 (COVID-19) pandemic, the health status of persons with dementia (PwD) and their caregivers' burden might worsen.

Objective: The article aims to find out the health status of PwD and caregivers' burden during the peak of second wave of COVID-19 and make a comparison with the preceding trough phase.

Methods: The study was conducted with 53 PwD and their caregivers in two phases.

Nutritional Composition of Some Commonly Available Aquatic Edible Insects of Assam, India.

The nutritive value of five edible aquatic insects of Assam-Hemipterans; water bug ( Fabricius) family belostomatidae; giant water bug ( Lepeletier and Serville) family belostomatidae; water scorpion ( sp.) family nepidae, water stick ( sp.) family nepidae; Coleopterans diving beetle ( sp.

Quality of life and Concerns of Parkinson's Disease Patients and their Caregivers during COVID-19 Pandemic: An Indian Study.

Objectives: Parkinson's disease (PD) patients have suffered during the coronavirus disease 2019 pandemic, with worsening of both motor and nonmotor symptoms. We conducted this study to evaluate the quality of life (QoL) and concerns of PD patients and their caregivers.

Methods: The study was conducted in mixed method, where the baseline data was taken by face-to-face interview during the unlock phase of December 2020 to March 2021, when there was no lockdown.

Tetrahalidometallate(II) Ionic Liquids with More than One Metal: The Effect of Bromide versus Chloride.

Fifteen N-butylpyridinium salts - five monometallic [C Py] [MBr ] and ten bimetallic [C Py] [M M Br ] (M=Co, Cu, Mn, Ni, Zn) - were synthesized, and their structures and thermal and electrochemical properties were studied. All the compounds are ionic liquids (ILs) with melting points between 64 and 101 °C. Powder and single-crystal X-ray diffraction show that all ILs are isostructural.

Adaptation and Validation of Addenbrooke's Cognitive Examination-III in Bengali for Screening MCI and Dementia.

Objective: Bengali, the 6th most spoken language globally with 268 million speakers, demands a culturally appropriate tool for screening any cognitive compromise in this population. Addenbrooke Cognitive Examination-III (ACE-III) is a standardized tool used for screening and/or diagnostic purpose worldwide. The aim of the present study was to adapt and validate ACE-III into Bengali language.

Exploring Caregiver Burden and Health Condition of Dementia Patients during Lockdown due to COVID-19 Pandemic.

Background: To combat the COVID-19 pandemic, several countries imposed strict lockdown to ensure social distancing to limit the spread of the virus. This caused difficulties in the management and care of patients with various chronic disorders including dementia.

Objectives: The objective of the study was to explore the health condition of patients with dementia and assess their caregivers' burden during the lockdown.

Tandem repeat interval pattern identifies animal taxa.

Motivation: We discover that maximality of information content among intervals of Tandem Repeats (TRs) in animal genome segregates over taxa such that taxa identification becomes swift and accurate. Successive TRs of a motif occur at intervals over the sequence, forming a trail of TRs of the motif across the genome. We present a method, Tandem Repeat Information Mining (TRIM), that mines 4k number of TR trails of all k length motifs from a whole genome sequence and extracts the information content within intervals of the trails.

Tuning radiative lifetimes in semiconductor quantum dots.

Photonic devices stand to benefit from the development of chromophores with tunable, precisely controlled spontaneous emission lifetimes. Here, we demonstrate a method to continuously tune the radiative emission lifetimes of a class of chromophores by varying the density of electronic states involved in the emission process. In particular, we examined the peculiar composition-dependent electronic structure of copper doped CdZnSe quantum dots.

Stochastic epigenetic dynamics of gene switching.

Epigenetic modifications of histones crucially affect eukaryotic gene activity, while the epigenetic histone state is largely determined by the binding of specific factors such as the transcription factors (TFs) to DNA. Here, the way in which the TFs and the histone state are dynamically correlated is not obvious when the TF synthesis is regulated by the histone state. This type of feedback regulatory relation is ubiquitous in gene networks to determine cell fate in differentiation and other cell transformations.

Accessing topological surface states and negative MR in sculpted nanowires of BiTe at ultra-low temperature.

Milling of 2D flakes is a simple method to fabricate nanomaterial of any desired shape and size. Inherently milling process can introduce the impurity or disorder which might show exotic quantum transport phenomenon when studied at the low temperature. Here we report temperature dependent weak antilocalization (WAL) effects in the sculpted nanowires of topological insulator in the presence of perpendicular magnetic field.

Amended GWO approach based multi-machine power system stability enhancement.

The conception of electromechanical oscillations initiates in the power network when there is an installation of the generator in parallel with the existent one. Further, the interconnection of multiple areas, extension in transmission, capricious load characteristics, etc. causes low-frequency oscillations in the consolidated power network.

Closed fumarase C active-site structures reveal SS Loop residue contribution in catalysis.

Fumarase C (FumC) catalyzes the reversible conversion of fumarate to S-malate. Previous structural investigations within the superfamily have reported a dynamic structural segment, termed the SS Loop. To date, active-site asymmetry has raised the question of how SS Loop placement affects participation of key residues during the reaction.

A Rare Mutation of β-Adrenergic Receptor Affects Sleep/Wake Behaviors.

Sleep is crucial for our survival, and many diseases are linked to long-term poor sleep quality. Before we can use sleep to enhance our health and performance and alleviate diseases associated with poor sleep, a greater understanding of sleep regulation is necessary. We have identified a mutation in the β-adrenergic receptor gene in humans who require fewer hours of sleep than most.