Tomography of a High-Purity Narrowband Photon From a Transient Atomic Collective Excitation

We demonstrate the efficient heralded generation of high purity narrow-bandwidth single photons from a transient collective spin excitation in a hot atomic vapour cell. Employing optical homodyne tomography, we fully reconstruct the density matrix of the generated photon and observe a Wigner function reaching the zero value without correcting for any inefficiencies. The narrow bandwidth of the photon produced is accompanied by a high generation rate yielding a high spectral brightness. The source is therefore compatible with atomic-based quantum memories as well as other applications in light-atom interfacing. This work paves the way to preparing and measuring arbitrary superposition states of collective atomic excitations.Comment: Version 2: Fixed typo in bandwidth, Changed fig. 3 to png reduce file size, added 1 reference, expanded several explanation

Total Ionizing Dose Tolerance of Micro-SD Cards for Small Satellite Missions

Tests have determined damage thresholds and failure rates as a function of total ionizing dose (TID) of beta radiation for various types of COTS micro-SD cards commonly used for memory storage in space applications. Radiation tolerance of high-density electronics are common critical failure modes for satellites, particularly for small satellites that often use lower shielding and less radiation-hardened COTS components. The tests evaluated SD-card formatting and read/write speeds at nine radiation intervals for up to ~ 1000 Gy TID, equivalent to ~15 times TID typically experienced annually on the unshielded exterior of satellites in Low Earth Orbit. A limited number of failures were observed beginning after ~ 400 Gy TID. Cards experiencing failures were subsequently tested at more rapid interval intervals, and typically recovered their initial read/write speeds after ≤ 24 hrs, except in more severe cases after \u3e 400 Gy TID. These results will facilitate satellite designers’ selection of the appropriate quality and cost of the micro-SD cards for their particular mission, based on reliability and radiation tolerance

Long segment composite split cord malformation with double bony spur

A composite type of SCM is very rare and only a few cases have been reported until today. The frequency of composite- type SCM is lower than 1% in the literature. In this report, we presented an unusual case of long segment composite type split cord malformation with double level bony spur with multiple associated bony anomalies

Design and Development of Automatic Operated Seeds Sowing Machine

The area of agriculture is so wide, therefore this field requires the advance technologies in the process of sowing, cropping, cutting. This advancement in technology will not affect the quality of soil and increase the efficiency of getting crop. During the seed sowing process the feeding of seed as well as fertilizer is pour. Now a days the availability of labor is a major problem faced by farmer. We demonstrate that the easy method for seed sowing. In this work we replace complicated gear system by hall effect sensor for easier and costlier seed sowing and also reduce a need of labor. The Hall Effect sensor convert rotation into distance for which seed sowing at particular distance. Also there is adjustable system for sowing at different distance. By using this machine the sowing can be done row by row and distance will maintain. So this machine reduces their efforts and reduces the cost of seed sowing process with great efficiency and accuracy with reducement in labor requirement

Bilateral post traumatic thalamic infarct: Rare case report

Bilateral thalamic infarction is rarely seen in cases with artery of Percheron embolization. Artery of Percheron is a rare variant of arterial supply to both thalamus and midbrain. Occlusion of this artery following trauma and causing bilateral thalamic infarction is rare and very few cases are reported in world literature

Intracranial arachnoid cyst: an institutional experience

Aim: In this study, symptoms at presentation, indication for surgery, surgical treatment modalities, postoperative results and complications were studied.Material and methods: We retrospectively compiled the details of patients with IAC from admission and operative records admitted through our OPD during the period between January 1995 and January 2015. Only those patients were admitted whose symptoms attributes to the cyst and asymptomatic patients were followed on OPD basis. This is a single institutional study.Results: This study includes 56 patients of IAC who were operated. Posterior fossa cysts (62.5%) were found more commonly symptomatic. Headache (32%) was the most common symptom in a patient with IAC. Out of all, 24 patients presented with headache and underwent surgery subsequently; 20 showed satisfactory relief after surgery while four showed partial relief. Size of cyst was significantly reduced after surgery in 52 patients after 12 weeks but four patients, who underwent cystoperitoneal shunt, required re-operation as patients showed no decrease in size of cyst due to shunt malfunction. Head circumference was reduced following intervention in infant patients. Three patients who presented with visual field defects with IAC in sellar region showed improvement after endoscopic fenestration of cyst. One of the patient with cerebellopontine angle arachnoid was died immediately after marsupialization due to unexplained bleeding.Conclusions: IAC is not an uncommon finding on imaging but only few are symptomatic. Patients with Intracranial arachnoid cyst should be treated only if the patient’s symptoms are attributable to the cyst

Prevalence and determinants of depression and its association with quality of life in Traumatic Brain Injury (TBI) patients

Introduction: Traumatic brain injury (TBI) is a major cause of disability. Assessment and treatment of TBI typically focus on physical and cognitive impairments, yet psychological impairments represent significant causes of disability. Depression may be the most common and disabling psychiatric condition in individuals with TBI. Objective: This cross-sectional study was design to investigate prevalence and risk factors of depression in Traumatic brain injury (TBI). Material and method: The Group studied consists of 204 patients of mild and moderate TBI between 14- days to one-year post injury. Demographic characteristics of the participants were assessed on a self-designed semi structured performa. Interviews focused on assessment of severity of TBI, depression and quality of life (Qol) using GCS, PHQ-9 and WHOBREF-QOL respectively. Results: Total 204 patients were included. 42.15% participants were found to have depression. None of the demographic variables were associated with depression except female sex, severity and time since injury. Moderate TBI patient (55.80%) had significantly higher occurrence of depression than the mild cases (44.2%). Patients with lesser duration (time since injury) of TBI had high incidence (50.2%) of depression compare to longer duration of TBI. Depressed patients also had poor Qol than those without depression in all domains except physical health domain. Neuroanatomical localization was also correlated with depression. Cerebral contusions were the most common (44.24%) lesions associated with depression. Conclusion: Depression is commonly associated, yet under diagnosed clinical entities in head injury and have tremendous impact in overall outcome measures. Every patient of head injury warrants psychiatric evaluation and concomitant treatment if required to ensure the attainment of not only neuroanatomical intact but overall productive and qualitative life vindicating the holistic and multidisciplinary treatment approach

Revealing cancer subtypes with higher-order correlations applied to imaging and omics data

Figure S9. Screenshot of the interactive Tumor Map visualization, showing HOCUS applied to the TCGA Pancan-12 mutation data. Each point is one tumor sample, which we have color-coded by tissue type. A dotted box highlights the cluster of samples that have both PIK3CA and TP53 mutations, which are usually mutually exclusive. (EPS 751 kb