Hemophagocytic lymphohistiocytosis (HLH) is an immune disorder characterized by uncontrolled inflammation due to defective immune response. It may be familial or acquired, but both share a common feature of threatening the life of a patient and may lead to death unless treated by appropriate treatment. Here in we report a case of adult HLH.
Background: Lymph node infarction is known to occur in association with many non-neoplastic and neoplastic conditions however its occurrence in association with DIC is not reported hitherto in the literature.
The mass spectra of 3-chloro-4,5-dipheny1-4H-1,2,4-triazole (I), 3-amino-4,5-diphenyl-4H-1,2,4-triazole (2) and 3-chloro-5-(5'-chloro-2'-thienyl)-4-phenyl-4H-l,2,4-triazole (3) revealed a novel skeletal rearrangement involving the migration of the 3-substituent to the C 5 carbon of the triazole ring followed by a concerted loss of nitrogen and benzonitrile.Mass spectral studies on heterocycles brought to light several skeletal rearrangements. Of these, the most extensively investigated ones were the formation of the fluorenyl cation from a number of diary1 five-membered heterocycles1 and the ring expansion of alkyl-substituted heter~cycles.~ Investigations on the mass spectra of 1,2,4-triazoles were only of recent ~r i~i n .~-~ The methyl and phenyl derivatives of 1,2,4-triazoline-3-thiones were found to be the most complex in their mass spectral behaviour, the other derivatives of this parent triazole system being relatively simpler.During the course of our investigations on 1,2,4-triazoles, we had occasion to examine the mass spectra of three triazoles (1)-(3). All three revealed a novel skeletal rearrangement, as evidenced from the following discussion.The molecular ion peaks were found to be the base peaks in the case of (2) and (3), whereas with (I), the parent ion was the second most abundant in the spectrum (the
There is a huge scope for natural fiber-reinforced composite materials, which can be used in 3D printing technology. Non-degradable materials used in the additive manufacturing field can be replaced by the innovative application of natural fiber-reinforced composite materials. This chapter introduces the advantages of 3D-printed natural fiber composite materials compared to polymer materials. The homogeneity and thermal stability of fiber reinforcement are the critical characteristics of the composite material. Also, the standardization of material testing has considerable space for research. Continuous natural fiber-printed composite and short natural fiber-printed composite are the major focuses for researchers in the field of additive manufacturing. Various fiber materials yield diverse results in the final product manufactured. Various additive manufacturing techniques can be applied and compared for the same reinforcements and matrix material.
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