High Data-Rate Atom Interferometry for Measuring Dynamic Inertial Conditions

Light pulse atom interferometers have demonstrated remarkable sensitivity and stability for acceleration and rotation rate measurement. However, typical manifestations are designed for laboratory environments and thus rely on a fixed magnitude and direction of gravity, and limited ambient rotation rate. We have enhanced the application space of atom interferometers towards more dynamic environments, with special attention for inertial navigation. I present our work in the domain of short time-of-flight atom interferometry, whereby the magnitude of ensemble excursion is constrained. The limited interrogation time results in a significant loss of sensitivity. We recover a fraction of the lost sensitivity by operating with an enhanced duty-cycle and data-rate. To demonstrate this concept, we construct an atom interferometer accelerometer capable of operating at data-rates as high as 300 Hz with sensitivities at μg/rtHz levels, which represents a competitive figure for inertial navigation application. For the bulk of this work, we demonstrate a dual-axis sensor capable of simultaneous acceleration and rotation-rate measurements. The sensor relies on a technique we refer to as ensemble exchange which provides a high flux source of ultracold atoms by swapping atomic ensembles between two MOTs. We achieve a steady-state atom number of 7e6 atoms/shot using a minimal loading time of a few milliseconds each shot. Furthermore, we find this technique to be robust under dynamic conditions as large as 10 g of acceleration and 20 rad/s of rotation rate, representing a significant enhancement in ultra-cold atom sample preparation. The sensor achieves μg/rtHz and μrad/s/rtHz sensitivities, making this technique a compelling prospect for inertial navigation applications. Through the use of auxiliary cosensors and a real-time combinatorial loop with feedforward and feedback mechanisms, we demonstrate an unprecedented enhancement of the sensor dynamic range up to 20 mg. Finally, I will discuss a novel manifestation of short time-of-flight atom interferometry in a warm atomic vapor, which avoids the complication of cold sample preparation and has the potential for significantly simplified laser systems

Prevalence of β thalassemia carrier state in Sindhi community of Wardha and evaluation of risk factors for β thalassemia trait

Objective: To determine the prevalence of β thalassemia in Sindhi community of Wardha and evaluation of risk factors. To give genetic counseling to those diagnosed as carriers.Study Design: Cross‑sectional (prevalence study).Setting: Sindhi community residing in and around Wardha.Study Period: 18 months.Materials and Methods: A total of 578 individuals belonging to Sindhi community residing in and around Wardha in India were selected by systemic randomization. Those who fulfilled the inclusion criteria and voluntarily gave consent were subject to Naked Eye Single Tube Rapid Osmotic Fragility Test (Nestroft). Those found positive by Nestroft were labeled carriers and advised to undergo Hemoglobin A2(HbA2) quantification for confirmation of carrier status. Carriers thus identified were given genetic counseling.Result: The mean age of study population was 15.06 years with a range of 3‑28 years. The largest group consisted of those between 12 and 18 years. The prevalence of β thalassemia carrier state as diagnosed by Nestroft is 36.36% (200/550) and incidence of carrier state by HbA2 quantification in the study population was 17.2% (95/550).Conclusion: Prevalence of β thalassemia in the Sindhi community of Wardha is higher than in other studies and equal to the highest prevalent communities in India. Thus, we recommend that urgent measures to increase awareness and control the disease be taken.Key words: Hemoglobin A2 quantification, naked eye single tube rapid osmotic fragility test, prevalence, Sindhi community, β thalassemi

Analysis on almost Abelian Lie groups: Groups, subgroups and quotients

The subject of investigation are real almost Abelian Lie groups with their Lie group theoretical aspects, such as the exponential map, faithful matrix representations, discrete and connected subgroups, quotients and automorphisms. The emphasis is put on explicit description of all technical details

LST Raw Dataset/Extracted sampling points Dec-11-2021

This dataset contains LST raster data run in QGIS and utilized for mapping and statistics. It also includes the extracted LST values from sampling points utilized for creating graphs using R.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

The HelthyAir Dataset: Outdoor Air Quality in Ho Chi Minh City, Vietnam

Outdoor air quality data were acquired from the Air Quality Monitoring Network consisting of six air pollution monitoring stations across Ho Chi Minh City (HCMC), Vietnam. The raw data contains 52,549 records collected over a period from mid of February 2021 to mid of June 2022. The air quality dataset includes the data of particulate matter (PM2.5), Total Suspended Particles (TSP), Sulfur dioxide (SO2), Ozone (O3), Nitrogen Dioxide (NO2), Carbon Monoxide (CO) in µg/m3, and two meteorological parameters Temperature (°C) and Humidity. This dataset can be used for air quality modeling, spatiotemporal analysis, and air quality assessment across the different regions including traffic, residential, and industrial areas across the city.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Clinical, sociodemographic, radiological profile and response to albendazole therapy in children with neurocysticercosis in Uttarakhand

Background: Overall neurocysticercosis (NCC) is identified as a major cause of active epilepsy in the developing world. Most of the studies focus on adults with limited studies in children. A pilot study from Garhwal region of Uttarakhand had reported a high incidence. Conflicting reports regarding the clinical presentation and response of cysticidal drugs have created a controversy regarding disease and outcome. This prospective observational study in Kumaon region of Uttarakhand aims to study clinical features, sociodemographic profile, radiological findings and response to 28 days albendazole therapy in children with NCC. Materials and Methods: Seventy nine patients with various neurological complaints, were diagnosed to have NCC on basis of computed tomography scan head. Other differential diagnoses were excluded by chest X-ray, Mantoux, erythrocyte sedimentation rate and magnetic resonance imaging where needed. The clinical, sociodemographic profile was recorded, and radiological and clinical response at 3 months after 28 days albendazole therapy was observed. Results: Seizures (93.9%) followed by vomiting (62%) and headache (30.4%) were the chief complaints. Complex partial seizures (70.3%) and generalized (17.6%) were the main seizure type. Most NCC were single (72.2%) out of which 26.3% disappeared on follow-up, 17.7% were multiple out of which 7% resolved and eight were calcified of which all persisted. Electroencephalography was abnormal in 62% patients. Conclusion: NCC in children is a relatively benign disease in Kumaon region with significant morbidity in the form of epilepsy with no mortality. Better prognosis was seen in single NCC in comparison to multiple or calcified lesions, but response to albendazole therapy was much less than in previous studies

A Camera-Trap Home-Range Analysis of the Indian Leopard (Panthera pardus fusca) in Jaipur, India

The suitability of the camera trap–retrap method was explored for identifying territories and studying the spatial distribution of leopards (Panthera pardus fusca) in the Jhalana Reserve Forest, Jaipur, India. Data from two years (November 2017 to November 2019, N = 23,208 trap-hours) were used to provide estimates of minimum home-range size and overlap. We conducted home-range analysis and estimation, using the minimum convex polygon (MCP) method with geographic information system (GIS) tools. We are aware of the limitations and advantages of camera trapping for long-term monitoring. However, the limitations of the research permit allowed only the use of camera traps to estimate the home ranges. A total of 25 leopards were identified (male = 8, female = 17). No territorial exclusivity was observed in either of the sexes. However, for seven females, we observed familial home-range overlaps wherein daughters established home ranges adjacent to or overlapping their natal areas. The median home range, as calculated from the MCP, was 305.9 ha for males and 170.3 ha for females. The median percentage overlap between males was 10.33%, while that between females was 3.97%. We concluded that camera trapping is an effective technique to map the territories of leopards, to document inter- and intraspecific behaviors, and to elucidate how familial relationships affect dispersal