151 research outputs found
Studies of reaction kinetics of monohydric alcohols by acid permanganate
The kinetics of the reaction of methanol and ethanol with acid permanganate was studied. The reactions were found to be first order with respect to permanganate ion concentration in both cases. The Arrhenius equation has found to be valid in the temperature range of the experiments. The rate constant increased with the increase of H^+ ion concentration. Mn (II) ions retarded the rate of reaction. The thermodynamic parameters, i.e. ΔE, log_10PZ and -ΔS have been calculated. The mechanism proposed by Ardon for the oxidation of alcohol accounts for the kinetics of the oxidation of methanol and ethanol by permanganate. It is suggested that the reacting species of manganese is Mn (III) and the reactants pass through a transition state involving the alcohols and Mn (III)
Primary signet-ring cell carcinoma of the urinary bladder
Primary signet-ring cell carcinoma of the urinary bladder is a rare tumor. The overall incidence is approximately 0.12-0.6% of all urinary bladder malignancies. The majority of the patients present in an advanced stage with a uniformly grim prognosis. As signet-ring cell carcinomas are more common in the gastrointestinal tract, a possibility of metastasis needs to be considered. Here we report, a 42-year-old patient who presented with hematuria and was diagnosed with a urinary bladder tumor. The patient was managed with partial cystectomy and pelvic lymph node dissection. The histopathological examination confirmed primary signet-ring cell carcinoma of the urinary bladder
On DNA Codes Over the Non-Chain Ring with
In this paper, we present a novel design strategy of DNA codes with length
over the non-chain ring
with elements and , where denotes the length of a code over
. We first study and analyze a distance conserving map defined over the ring
into the length- DNA sequences. Then, we derive some conditions on the
generator matrix of a linear code over , which leads to a DNA code with
reversible, reversible-complement, homopolymer -run-length, and
-GC-content constraints for integer ().
Finally, we propose a new construction of DNA codes using Reed-Muller type
generator matrices. This allows us to obtain DNA codes with reversible,
reversible-complement, homopolymer -run-length, and -GC-content
constraints.Comment: This paper has been presented in IEEE Information Theory Workshop
(ITW) 2022, Mumbai, INDI
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