Cislunar Satellite Constellation Design Via Integer Linear Programming

Cislunar space awareness is of increasing interest to the international community as Earth-Moon traffic is projected to increase. This raises the problem of placing satellites optimally in a constellation to provide satisfactory coverage for said traffic. The Circular Restricted 3 Body Problem (CR3BP) provides promising periodic orbits in the Earth-Moon rotating frame for traffic monitoring. This work converts a spatially and temporally varying traffic coverage requirement into an integer linear programming problem, attempting to minimize the number of satellites required for the requested coverage.Comment: 18 pages, 15 figures, submitted to 2023 AAS Conferenc

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Not AvailableAapplication of Si @ 300 mg Si kg soil along with P @ 40 mg P kg soil recorded significantly highest green and dry shoot yield (93.03 g pot-1, 52.25 g pot-1, respectively) of maize in loamy sandy and silty loam soils, whereas, the highest root yield (13.39 g pot-1) was also recoded under the same treatment in silty loam soil. The highest chlorophyll content in maize leaf (22.05 cci) was noted with the application of Si @ 400 mg Si kg-1 soil along with P @ 40 mg P kg soil-1 in both the soils. Results of investigation indicated that application of silicon @ 300 mg kg-1 and phosphorus at 40 mg P O kg-1 gave maximum maize yield under P stress condition and also improved silicon, phosphorus and 2 5 micronutrients utilization by maize plants.Not Availabl

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Not AvailableThe effort was made for study the maize yield and nutrient content as influenced by different levels of silicon and phosphorus in Typic Ustochrepts soil. A pot experiment was conducted in 2012 in the greenhouse of the Anand Agricultural University, Anand. Treatments were arranged in a factorial completely randomized design with silicon factor at five levels (0, 100, 200, 300 and 400 ppm) and two levels of P (0 and 40 mg P kg soil-1) and maize were taken as a test crop with three replicates. Indian improved and high –yielding variety, GM-6, was used. The application of Si @ 300 mg Si kg-1 soil recorded significantly the highest green shoot yield (93.03 g pot-1) in loamy sand soil, whereas, the highest dry shoot yield (52.25 g pot-1 and 64.3 g pot-1) was noted under same treatment in both the soils. On the whole results of study indicate that application of silicon @ 300 mg kg-1 and phosphorus at 40 mg P2O5 kg-1 gave highest maize yield under P stress condition and also enhanced silicon, phosphorus content by maize plant but obtainable Fe and Mn contents were significantly decline by maize plant.Not Availabl

Fatal Abdominal Compartment Syndrome Due to Constipation: A Case Report

Introduction: Abdominal compartment syndrome (ACS) is a rare condition in which increased intra-abdominal pressure causes multiorgan dysfunction through decreased perfusion. Causes of this condition are variable, and early recognition is critical for favorable patient outcomes. Measurement of bladder pressure is recommended for diagnosis.Case Report: A 64-year-old female on clozapine with a two-year history of chronic constipation presented to the emergency department in extremis with a protuberant abdomen. After resuscitative measures, computed tomography showed a dilated, stool-filled colon with a decompressed inferior vena cava and decreased perfusion. She died despite surgical decompression.Conclusion: Severe constipation is a rare cause of ACS, and there is a lack of evidence-based guidelines. Options for bedside decompression are limited. To reduce morbidity and mortality in this population, early recognition of ACS is imperative. Initial interventions should support hemodynamics and respiration. Definitive management is surgical decompression

Effect of Ovariectomy on Brain Angiotensin Type 1 Receptor Binding, blood pressure, and Hippocampal Gene Methylation and BDNF mRNA expression in Dahl Salt-Sensitive Hypertensive and Dahl Salt-Resistant normotensive Rats

Objective: To assess the importance of gonadal steroids for blood pressure regulation, brain AT1 receptors, and regulation of gene expression in the hippocampus of a hypertensive and normotensive rat strain. Background: Women’s resistance to hypertension and cardiovascular disease prior to, but not after menopause, arises from ovarian hormones. Post-menopausally, women are more susceptible to cognitive impairment and dementias. The brain angiotensin system plays a role in cognitive function in addition to regulating the cardiovascular system. Methods: AT1R binding was determined autoradiographically in selected brain regions of ovariectomized versus sham-operated (at 13-weeks) Dahl salt-sensitive (DS) and Dahl salt-resistant (DR) rats which were sacrificed at 33-weeks. Hippocampal DNA methylation was assessed by ELISA, while BDNF mRNA expression was determined by PCR. Mean arterial blood pressure (MAP) was determined telemetrically (DSI technology) at 29-weeks. Results: The MAP of DS sham rats was 181±5mmHg while the MAP of DR sham rats was 96±4mmHg (p1R expression in the solitary tract nucleus of the DS-OVX rats was significantly reduced (p Conclusion: Strain differences and gonadal functionality have limited effects on brain AT1R expression. The global DNA methylation and BDNF mRNA changes suggest gonadal hormone and strain-specific alterations in gene expression in the hippocampus. Grants Funding: NIH NHLBI HL121456, HPD Research Grant, Cardiovascular Neuroscience Fun