Thermal conductivity of graphene in Corbino membrane geometry

Local laser excitation and temperature readout from the intensity ratio of Stokes to anti-Stokes Raman scattering signals are employed to study the thermal properties of a large graphene membrane. The concluded value of the heat conductivity coefficient \kappa ~ 600 W/m \cdot K is smaller than previously reported but still validates the conclusion that graphene is a very good thermal conductor.Comment: 4 pages, 3 figure

To evaluate the role of Lakshadi Avachoornana in the management of Dushta Vrana with special reference to Diabetic Ulcer : A Case Study

The global prevalence of diabetics is estimated to increase from 4.0% in 1995 to 5.5% by the year 2025. The chances of secondary infection are more in diabetics as the immunity of the patients is compromised and needs prolonged hospitalization, psychological and social problem for the patients and family. In Madhumehi the vessels of lower limb become weak and is unable to expel the Doshas (along with other Dushyas) leading to Prameha Pidakas more in lower extremities, which eventually burst open precipitating an ulcer.  Avachoornana is one among the Shashti Upakrama, explained by Acharya Sushrutha for management of Vrana. Numerous studies are done in the management of Dushta Vrana with the internal medication and external therapies. Here a preliminary attempt to study the effect of Avachoornana with Lakshadi Choorna in the management of the same was taken for the study

Captive rearing of Hippocampus kuda and issues of seahorse conservation in India

Captive breeding and rearing of Hippocampus kuda, onc of the most dominant species of seahorscs was done to determine the optimum conditions of rearing, which would give the bighestsurvival, and growth of juveniles. A diet or enriched Artemia and mixed marine copepods was found to be the best feed combination during a rearing period 01'60 days. A stocking density 01'3 juveniles per litre was found to be the optimum, which gave the highest mean incrcment of growth in length and weight, as well as the highest mean production per litre

Fisheries and trade of seahorses, Hippocampus spp., in southern India

Seahorses (Hippocampus spp.) are in much demand for traditional medicines and curios in dried form, and as aquarium fish when alive. Shallow seas abundant in sea grasses, sponges and corals characterise the natural habitats of the seahorses (Vincent 1994, 1995). All seahorses (Syngnathidae) belong to one genus Hippocampus. There are about 33 species of seahorses worldwide (Lourie, Vincent & Hall 1999; Lourie & Randall 2003). Seahorses are unique in their reproductive behaviour, in which the males become pregnant. The male fertilises and broods the eggs produced and deposited into its pouch by the female during courtship and mating, and in turn delivers the hatchling, after a long period of pregnancy and labour. Most species of seahorses studied so far show unique sexual fidelity and form faithful pair bonds (Vincent & Sadler 1995), in which case one male and one female mate repeatedly and exclusively giving up opportunities to interact with non-partners

Circular dichroism of magneto-phonon resonance in doped graphene

Polarization resolved, Raman scattering response due to E$_{2g}$ phonon in monolayer graphene has been investigated in magnetic fields up to 29 T. The hybridization of the E$_{2g}$ phonon with only the fundamental inter Landau level excitation (involving the n=0 Landau level) is observed and only in one of the two configurations of the circularly crossed polarized excitation and scattered light. This polarization anisotropy of the magneto-phonon resonance is shown to be inherent to relatively strongly doped graphene samples, with carrier concentration typical for graphene deposited on SiO$_2$

Internal water bridge and antiparallel sheet in the structure of benzyloxycarbonyl-L-alanyl-D-phenylalanyl-L-proline monohydrate

Benzyloxycarbonyl-L-alanyl-o-phenylalanyl-L-proline monohydrate, C25H29N3O6.H2O, crystallizes in the orthorhombic space group P212121 with four molecules in a unit cell of dimensions a = 9.594 (9), b = 9.705 (4) and c = 27.9 17 (12) Å. The structure has been refined to an R value of 0.067 for 2046 observed reflections. All the peptide units in the molecule are trans and the prolyl residue is in the conformation. The lone water molecule in the structure is hydrogen bonded to the carbonyl O atom in the C2 - Cγ - exo - Cβ endo conformation. The lone water molecule in the structure is hydrogen bonded to the carbonyl O atom in the benzyloxycarbonyl group and to one of the O atoms in the terminal carboxyl group. This internal water bridge, observed for the first time in a linear peptide, provides a model for water-mediated chain-reversal. An interesting feature of the crystal structure is the presence of an antiparallel sheet involving the alanyl and the phenyl-alanyl residues

Impact of an educational video as a consent tool on knowledge about cure research among patients and caregivers at HIV clinics in South Africa

Background: Despite increasing access to antiretroviral therapy in low- and middle-income countries, only 54% of eligible individuals were receiving treatment in Africa by 2015. Recent developments in HIV cure research have been encouraging. However, the complex science and procedures of cure research render the informed consent process challenging. Objective: This study evaluates the impact of a video tool on educating participants about HIV cure. Methods: A questionnaire assessing the content of the video was administered to adults recruited from two clinics in South Africa. Patients and their care partners, who provided voluntary informed consent, were included in the study. The questionnaire was administered in each participant‘s home language before, immediately after and at 3 months after viewing the video, in an uncontrolled quasi-experimental ‘one group pre-test–post-test’ design. Scoring was carried out according to a predetermined scoring grid, with a maximum score of 22. Results: A total of 88 participants, median age 32.0 years and 86% female, were enrolled and completed the pre- and post-video questionnaires. Twenty-nine (33%) completed the follow-up questionnaire 3 months later to assess retention of knowledge. Sixty-three (72%) participants had a known HIV-positive status. A significant increase (10.1 vs 15.1, P=0.001) in knowledge about HIV and HIV cure immediately after viewing the video was noted. No statistically significant difference in knowledge between HIV-positive and -negative patients was noted at baseline. After 3 months, a decrease in performance participation (14 vs 13.5, P=0.19) was noted. However, knowledge scores achieved after 3 months remained significantly higher than scores at baseline (13.5 vs 9.5, P<0.01). Conclusions: This research showed that a video intervention improved participants’ knowledge related to HIV, HIV cure research and ethics, and the improvement was sustained over 3 months. Video intervention may be a useful tool to add to the consent process when dealing with complex medical research questions