115 research outputs found
Evaluation of Tourism Climate Resources in Taishan Scenic Spot
Climate resources is a very important resource affecting tourism, is the main reference factor for people to go to tourist attractions. The routine evaluation of climate comfort index, including temperature and humidity index, cold index, clothing index, comprehensive comfort index, and climate tourism climate index, establish the linear regression equation and the tourism climate index and linear regression equation, evaluate the tourism climate resources of mount tai scenic spot in Shandong province. The analysis results show that the suitable period of Taishan is March to November, among which April to October is the best suitable travel period, Taishan scenic area in April and October, May to September tourism comfort is better, and January, February and December are not suitable for travel
Superconductivity in the cobalt-doped V3Si A15 intermetallic compound
The A15 structure of superconductors is a prototypical type-II superconductor
that has generated considerable interest since the early history of
superconducting materials. This paper discusses the superconducting properties
of previously unreported V3-xCoxSi alloys. It is found that the lattice
parameter decreases with increasing cobalt-doped content and leads to an
increased residual resistivity ratio (RRR) value of the V3-xCoxSi system.
Meanwhile, the superconducting transition temperature (Tc) cobalt-doped
content. Furthermore, the fitted data show that the increase of cobalt-doped
content also reduces the lower/upper critical fields of the V3-xCoxSi system.
Type-II superconductivity is demonstrated on all V3-xCoxSi samples. With higher
Co-doped content, V3-xCoxSi alloys may have superconducting and structural
phase transitions at low-temperature regions. As the electron/atom (e/a) ratio
increases, the Tc variation trend of V3Si is as pronounced as in crystalline
alloys and monotonically follows the trend observed for amorphous
superconductors.Comment: 20 pages, 7 figure
Pharmacokinetics/pharmacodynamics of polymyxin B in patients with bloodstream infection caused by carbapenem-resistant Klebsiella pneumoniae
Introduction: Polymyxin B is a last-line therapy for carbapenem-resistant microorganisms. However, a lack of clinical pharmacokinetic/pharmacodynamic (PK/PD) data has substantially hindered dose optimization and breakpoint setting.Methods: A prospective, multi-center clinical trial was undertaken with polymyxin B [2.5 mg/kg loading dose (3-h infusion), 1.25 mg/kg/12 h maintenance dose (2-h infusion)] for treatment of carbapenem-resistant K. pneumoniae (CRKP) bloodstream infections (BSI). Safety, clinical and microbiological efficacy were evaluated. A validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was applied to determine the concentrations of polymyxin B in blood samples. Population pharmacokinetic (PK) modeling and Monte Carlo simulations were conducted to examine the susceptibility breakpoint for polymyxin B against BSI caused by CRKP.Results: Nine patients were enrolled and evaluated for safety. Neurotoxicity (5/9), nephrotoxicity (5/9), and hyperpigmentation (1/9) were recorded. Blood cultures were negative within 3 days of commencing therapy in all 8 patients evaluated for microbiological efficacy, and clinical cure or improvement occurred in 6 of 8 patients. Cmax and Cmin following the loading dose were 5.53 ± 1.80 and 1.62 ± 0.41 mg/L, respectively. With maintenance dosing, AUCss,24 h was 79.6 ± 25.0 mg h/L and Css,avg 3.35 ± 1.06 mg/L. Monte Carlo simulations indicated that a 1 mg/kg/12-hourly maintenance dose could achieve >90% probability of target attainment (PTA) for isolates with minimum inhibitory concentration (MIC) ≤1 mg/L. PTA dropped substantially for MICs ≥2 mg/L, even with a maximally recommended daily dose of 1.5 mg/kg/12-hourly.Conclusion: This is the first clinical PK/PD study evaluating polymyxin B for BSI. These results will assist to optimize polymyxin B therapy and establish its breakpoints for CRKP BSI
Preliminary study of relationships between hypnotic susceptibility and personality disorder functioning styles in healthy volunteers and personality disorder patients
<p>Abstract</p> <p>Background</p> <p>Hypnotic susceptibility is one of the stable characteristics of individuals, but not closely related to the personality traits such as those measured by the five-factor model in the general population. Whether it is related to the personality disorder functioning styles remains unanswered.</p> <p>Methods</p> <p>In 77 patients with personality disorders and 154 healthy volunteers, we administered the Stanford Hypnotic Susceptibility Scale: Form C (SHSSC) and the Parker Personality Measure (PERM) tests.</p> <p>Results</p> <p>Patients with personality disorders showed higher passing rates on SHSSC Dream and Posthypnotic Amnesia items. No significant correlation was found in healthy volunteers. In the patients however, SHSSC Taste hallucination (β = 0.26) and Anosmia to Ammonia (β = -0.23) were significantly correlated with the PERM Borderline style; SHSSC Posthypnotic Amnesia was correlated with the PERM Schizoid style (β = 0.25) but negatively the PERM Narcissistic style (β = -0.23).</p> <p>Conclusions</p> <p>Our results provide limited evidence that could help to understand the abnormal cognitions in personality disorders, such as their hallucination and memory distortions.</p
Software for the frontiers of quantum chemistry:An overview of developments in the Q-Chem 5 package
This article summarizes technical advances contained in the fifth major release of the Q-Chem quantum chemistry program package, covering developments since 2015. A comprehensive library of exchange–correlation functionals, along with a suite of correlated many-body methods, continues to be a hallmark of the Q-Chem software. The many-body methods include novel variants of both coupled-cluster and configuration-interaction approaches along with methods based on the algebraic diagrammatic construction and variational reduced density-matrix methods. Methods highlighted in Q-Chem 5 include a suite of tools for modeling core-level spectroscopy, methods for describing metastable resonances, methods for computing vibronic spectra, the nuclear–electronic orbital method, and several different energy decomposition analysis techniques. High-performance capabilities including multithreaded parallelism and support for calculations on graphics processing units are described. Q-Chem boasts a community of well over 100 active academic developers, and the continuing evolution of the software is supported by an “open teamware” model and an increasingly modular design
Evaluation of Tourism Climate Resources in Taishan Scenic Spot
Climate resources is a very important resource affecting tourism, is the main reference factor for people to go to tourist attractions. The routine evaluation of climate comfort index, including temperature and humidity index, cold index, clothing index, comprehensive comfort index, and climate tourism climate index, establish the linear regression equation and the tourism climate index and linear regression equation, evaluate the tourism climate resources of mount tai scenic spot in Shandong province. The analysis results show that the suitable period of Taishan is March to November, among which April to October is the best suitable travel period, Taishan scenic area in April and October, May to September tourism comfort is better, and January, February and December are not suitable for travel
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