1,049 research outputs found
Dilemmatic Deliberations In Kierkegaard’s Fear and Trembling
My central claim in this paper is that Kierkegaard’s Fear and Trembling is governed by the basic aim to articulate a real dilemma, and to elicit its proper recognition as such. I begin by indicating how Kierkegaard’s works are shaped in general by this aim, and what the aim involves. I then show how the dilemmaticstructure of Fear and Trembling is obscured in a recent dispute between Michelle Kosch and John Lippitt regarding the basic aims and upshot of the book. Finally, I consider two critical questions: Why does Kierkegaard present his dilemmatic reasoning in the form of a “dialectical lyric”? And why does he write a book that aims only to articulate a dilemma, and not also to resolve it
Revisiting the as a hadronic molecule and its strong decays
Recently, the Belle collaboration measured the ratios of the branching
fractions of the newly observed excited state. They did not
observe significant signals for the decay, and reported an upper limit for the ratio of the three
body decay to the two body decay mode of . In
this work, we revisit the newly observed from the molecular
perspective where this resonance appears to be a dynamically generated state
with spin-parity from the coupled channels interactions of the and in -wave and in -wave. With
the model parameters for the -wave interaction, we show that the ratio of
these decay fractions reported recently by the Belle collaboration can be
easily accommodated.Comment: Published version. Published in Eur.\ Phys.\ J.\ C {\bf 80}, 361
(2020
2,5-Dibromoterephthalic acid dihydrate
The asymmetric unit of the title compound, C8H4Br2O4·2H2O, contains one half-molecule of 2,5-dibromoterephthalic acid (DBTA) and one water molecule. The DBTA molecule is centrosymmetric. In the crystal structure, intermolecular O—H⋯O hydrogen bonds link the molecules, forming a three-dimensional framework
Biochemical, haematological and histopathological studies of extract of Ageratum conyzoides L. in Sprague Dawley rats
This study was conducted to evaluate the safety potential of the leaf extract of Ageratum conyzoides Linnaeus in Sprague Dawley (SD) rats using biochemical, haematological and histological indices of toxicity. Four groups of seven male SD rats per group were used for the study. To group A was administered 0.25% CMC-Na/ kg body weight and was used as the control group, while groups B, C and D were respectively administered with 500, 1000 and 1500 mg/kg body weight of the ethanolic leaf extract of A. conyzoides by gastric intubation for 14 days. Animals were subsequently anaesthetized, blood samples were collected for biochemical and haematological assays; organs were isolated and weighed, while the liver, kidney and spleen were processed for histopathological studies. Aspartate
amino transferase, lactate dehydrogenase, creatine kinase and alkaline phosphatase were significantly (p < 0.05) reduced in the groups treated with 1000 and 1500 mg/kg body weight of the extract. Furthermore, there was a significant (p < 0.05) elevation in white blood cell count, mean platelet volume and % platelet distribution width. Histopathological studies indicated various degrees of hepatocellular necrosis in all the treated groups accompanied by significant increases in the weight of liver and spleen. The results showed that the ethanolic leaf extract of A. conyzoides significantly alters the
biomarkers of cardiac and skeletal muscle disorders, and higher doses could induce liver cell injury
Research on Keyhole Diameter’s Vision Measurement Based on Parallel Technology
A keyhole diameter of the cartridge’s measurement based on machine vision is a part of the cartridge’s geometry measurement system, according to the system requirements, to complete the measurement within 5 seconds. A Image Collection System was constructed using computer, CCD camera, LED source, meanwhile a measurement system was compiled by C# on VS2010 platform based on machine vision. Use the Otsu algorithm to extracts the keyhole’s edge and near the pixels in order to reduce the computational Canny operator, and use parallel computing in the Canny operator to improve computing speed purposes. Use QueryPerformanceCounter timer for each module timing Canny operator, Canny operator improved computation time is reduced from the original 6s to nearly a hundred ms improved. Meet the time requirements of cartridge geometry measurement system, and other machine vision in which the project can be widely used
12β,14-Dihydroxy-3-oxo-5β,20(22)-cardenolide monohydrate
The title compound, digoxigenone, C23H30O5·H2O, was biotransformed from digoxigenin. In the crystal, intermolecular O—H⋯O hydrogen bonds contribute to the formation of a three-dimensional supramolecular structure. The title compound has three fused six-membered rings (A,B,C) and two non-fused five-membered rings (D,E). As in other structures, compound nucleus has a cis-trans-cis conformation for the A-B,B-C,C-D ring junctions with rings A, B and C exhibiting chair conformations
Asynchronous measurement-device-independent quantum key distribution with hybrid source
The linear constraint of secret key rate capacity is overcome by the
tiwn-field quantum key distribution (QKD). However, the complex phase-locking
and phase-tracking technique requirements throttle the real-life applications
of twin-field protocol. The asynchronous measurement-device-independent (AMDI)
QKD or called mode-pairing QKD protocol [PRX Quantum 3, 020315 (2022), Nat.
Commun. 13, 3903 (2022)] can relax the technical requirements and keep the
similar performance of twin-field protocol. Here, we propose an AMDI-QKD
protocol with a nonclassical light source by changing the phase-randomized weak
coherent state to a phase-randomized coherent-state superposition (CSS) in the
signal state time window. Simulation results show that our proposed hybrid
source protocol significantly enhances the key rate of the AMDI-QKD protocol,
while exhibiting robustness to imperfect modulation of nonclassical light
sources.Comment: 9 pages, 4 figure
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