146 research outputs found
Quantum control of hybrid nuclear-electronic qubits
Pulsed magnetic resonance is a wide-reaching technology allowing the quantum
state of electronic and nuclear spins to be controlled on the timescale of
nanoseconds and microseconds respectively. The time required to flip either
dilute electronic or nuclear spins is orders of magnitude shorter than their
decoherence times, leading to several schemes for quantum information
processing with spin qubits. We investigate instead the novel regime where the
eigenstates approximate 50:50 superpositions of the electronic and nuclear spin
states forming "hybrid nuclear-electronic" qubits. Here we demonstrate quantum
control of these states for the first time, using bismuth-doped silicon, in
just 32 ns: this is orders of magnitude faster than previous experiments where
pure nuclear states were used. The coherence times of our states are five
orders of magnitude longer, reaching 4 ms, and are limited by the
naturally-occurring 29Si nuclear spin impurities. There is quantitative
agreement between our experiments and no-free-parameter analytical theory for
the resonance positions, as well as their relative intensities and relative
Rabi oscillation frequencies. In experiments where the slow manipulation of
some of the qubits is the rate limiting step, quantum computations would
benefit from faster operation in the hybrid regime.Comment: 20 pages, 8 figures, new data and simulation
Cold Application on Bruising at the Subcutaneous Heparin Injection Site: A Systematic Review and Meta-Analysis
publishedVersio
OptimShare: A Unified Framework for Privacy Preserving Data Sharing -- Towards the Practical Utility of Data with Privacy
Tabular data sharing serves as a common method for data exchange. However,
sharing sensitive information without adequate privacy protection can
compromise individual privacy. Thus, ensuring privacy-preserving data sharing
is crucial. Differential privacy (DP) is regarded as the gold standard in data
privacy. Despite this, current DP methods tend to generate privacy-preserving
tabular datasets that often suffer from limited practical utility due to heavy
perturbation and disregard for the tables' utility dynamics. Besides, there has
not been much research on selective attribute release, particularly in the
context of controlled partially perturbed data sharing. This has significant
implications for scenarios such as cross-agency data sharing in real-world
situations. We introduce OptimShare: a utility-focused, multi-criteria solution
designed to perturb input datasets selectively optimized for specific
real-world applications. OptimShare combines the principles of differential
privacy, fuzzy logic, and probability theory to establish an integrated tool
for privacy-preserving data sharing. Empirical assessments confirm that
OptimShare successfully strikes a balance between better data utility and
robust privacy, effectively serving various real-world problem scenarios
High efficacy of two artemisinin-based combinations: artesunate + sulfadoxine-pyrimethamine and artemether-lumefantrine for falciparum malaria in Yemen
Conformation-Specific Spectroscopy of Peptide Fragment Ions in a Low-Temperature Ion Trap
The Epidemiological And Susceptibility Study Of Inpatient Blood Cultures In Amir Alam Hospital 1998 - 2000
Sepsis is one of the most critical medical emergency situations. Treatment with anti microbial drugs should be initiated as soon as samples of blood and other relevant sites have been cultured. Available information about patterns of anti microbial Susceptibility among bacterial isolates from the community, the hospital, and the patient should be taken in to account. It is important, pending culture results, to initiate empirical anti microbial therapy."nMaterials and methods: In a descriptive study during 3 years (1377-1379), microbial and anti microbial susceptibility patterns evaluated in Amir alam clinical laboratory on 2000 specimen of blood culture received from 765 hospitalized patients at Amir Alam hospital wards."nResults: 113 specimens from 77 patient (10 percent) were positive for microbial growth. Enterobacter, S. aureus, S.epidermidis, Pneumococci, Ecoli, and Pseudomonas were the most common isolated etiologic agents(80 percent) . The most common organism was Entenobacter in 1377, S.aureus in 1378 and pseudomonas in 1379 There were significant change in patlern of organisms, increase resistance to some important available antibiotics and change in antibiotic susceptibility pattern during three years (disc diffusion method)."nConclusions: According to Results of this study due to change in pattern of organism and their antibiotic susceptibility, dynamic microbiological study provide important data for Ordering empirical and culture oriented treatment of patients with bacteremia, Sepsis, anti microbial Chemotherapy, anti microbial susceptibility empirical anti microbial therapy, microbial pattern
Comparing Computer-assisted vs. Face to Face Education on Dietary Adherence among Patients with Myocardial Infarction
Background & Aim: Diet adherence is a major issue in cardiovascular diseases control. Patient education could be a valuable strategy for promoting diet adherence. The aim of this study was to compare the effects of computer-assisted vs. face to face education on dietary adherence among patients with myocardial infarction. Methods & Materials: In this experimental study, 117 patients with the first acute myocardial infarction were selected via a convenience sampling. The participants were randomly allocated into three groups. Patients in the face to face group (n=43) received an education about diet in two two-day sessions. The computer-assisted education group (n=33) received the same educational plan provided by computer software containing audio, text, images and animations at home. The control group (n=41) received their usual care. Adherence to dietary regimen was assessed three months after the educations. Results: There were not significant association between the three groups in terms of demographic characteristics and disease history. There were no significant different in unhealthy diet adherence between the three groups. There were not significant differences in healthy diet between the computer-assisted and face to face education groups. The computer-assisted education group had significantly better adherence with the consumed amount of fats (P=0.01), useful meat substitutes (P=0.01), and other foods (P=0.012) than the control group. In addition, the face to face education group had significantly greater adherence scores with consuming meat substitutes (P=0.04), and fats (P=0.04) than the control group. Conclusion: Both computer-assisted and face to face educational strategies had positive effects on improving adherence following myocardial infarction
Sexual desire changes during menstrual cycle and relationship with premenstrual syndrome
Background: Sexual function in women may be affected by their menstrual cycle. Lack of sexual drive is a deficiency or absence of sexual fantasies and desire for sexual activity. This study aims at determining the changes in sexual desire during the menstrual cycle and those associated with premenstrual syndrome (PMS) and evaluates sexual desire during the menstrual cycle and the associated changes with PMS. Methods: The sample for this cross-sectional study includes 150 women employed in factories in Tehran. The instruments for data collection were questionnaires and journals of premenstrual experiences.Results: Analysis of the data showed that the mean age of the subjects was 31 years )standard deviation = 8.46(. The most frequent decrease in sexual desire was during the week prior to the start of menstrual bleeding (27.3%) and the least frequent was from the end of bleeding to one week before the next period of menstrual bleeding (5.3%). In 24.7% of the cases, an increase in sexual desire occurred during the middle of the menstrual cycle and 27.3% during the course of menstrual bleeding. Moreover, 10.7% of the subjects had an increase in sexual desire during the week before bleeding. Furthermore, a positive correlation was found between changes in sexual desire and PMS (p<0.001). In addition, a positive correlation was found between changes in sexual desire and breast tenderness, joint and muscle pain. Conclusions: The sexual desire of women, with or without PMS, changes during the menstrual cycle. The greatest decrease in sexual desire occurs during the first week before menstrual bleeding in women with PMS. Such information can greatly help toward understanding and treatment in sexual therapy for couples
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