Toolboxes and handing students a hammer: The effects of cueing and instruction on getting students to think critically

Developing critical thinking skills is a common goal of an undergraduate physics curriculum. How do students make sense of evidence and what do they do with it? In this study, we evaluated students' critical thinking behaviors through their written notebooks in an introductory physics laboratory course. We compared student behaviors in the Structured Quantitative Inquiry Labs (SQILabs) curriculum to a control group and evaluated the fragility of these behaviors through procedural cueing. We found that the SQILabs were generally effective at improving the quality of students' reasoning about data and making decisions from data. These improvements in reasoning and sensemaking were thwarted, however, by a procedural cue. We describe these changes in behavior through the lens of epistemological frames and task orientation, invoked by the instructional moves

Direct observation of narrow electronic energy band formation in 2D molecular self-assembly

Surface-supported molecular overlayers have demonstrated versatility as platforms for fundamental research and a broad range of applications, from atomic-scale quantum phenomena to potential for electronic, optoelectronic and catalytic technologies. Here, we report a structural and electronic characterisation of self-assembled magnesium phthalocyanine (MgPc) mono and bilayers on the Ag(100) surface, via low-temperature scanning tunneling microscopy and spectroscopy, angle-resolved photoelectron spectroscopy (ARPES), density functional theory (DFT) and tight-binding (TB) modeling. These crystalline close-packed molecular overlayers consist of a square lattice with a basis composed of a single, flat-adsorbed MgPc molecule. Remarkably, ARPES measurements at room temperature on the monolayer reveal a momentum-resolved, two-dimensional (2D) electronic energy band, 1.27 eV below the Fermi level, with a width of ∼20 meV. This 2D band results from in-plane hybridization of highest occupied molecular orbitals of adjacent, weakly interacting MgPc's, consistent with our TB model and with DFT-derived nearest-neighbor hopping energies. This work opens the door to quantitative characterisation – as well as control and harnessing – of subtle electronic interactions between molecules in functional organic nanofilms

The Blue Sweater

‘The Blue Sweater’ is a journey through memories of a place and way of life that no longer exists. Memories that are now fading away and some I have already lost. I travelled back in my memory and gathered all that I remembered of living in my village. While we embraced development, we lost a lot too. Bridges sprung up connecting the islands of the coast to the city, machines began plying the land, and alongside, trees and animals started disappearing. My memories are now a mixed bag of vivid imageries of an actual tropical village that used to be, and all those stories I cooked up to boast about to my classmates. Some stories I have narrated way so many times they have become so real I can’t think of them merely as stories anymore. The Blue Sweater explores family bonding, love and tragedy—an overwhelming part of my life back then. It is a story of siblings and their relationship enshrined in the celebration of ‘Rakshabhandan’, a day that celebrates the sacred relationship between brothers and sisters in India. Rakshabhandhan, also known as Rakhi Poornima or Savan Poornima, falls on a fullmoon day of the Indian Lunar calendar. ‘The Blue Sweater’ became a story of the love of a sister for her brother and the pain of a tragedy that befalls them. We all know life is hard, and often tragic, but I wanted to underscore the possibility of hope when things seem bleak. Stories of memories help us through all of that and I wanted to re-invent optimism in making one such story myself

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Not AvailableTrawl nets account for major share of shark landings in lndia followed by gill nets. New Ferry Wharf and Sassoon Dock in Mumbai, Pudumanai Kuppam in Andhra Pradesh, Tuticorin in Tamil Nadu and Veraval in Gujarat are centres of shark landings by trawl net and gill net. Shakthikulangara and Kochi in Kerala are centres for gill net landings. There are more than 800 boats engaged in shark fishing in just one Thoothoor region of Kanyakumari District, Tamil Nadu.Not Availabl

Mopla guttata (Acrididae: Catantopinae) rediscovered in the Western Ghats, Kerala, India

The endemic Catantopinae genus Mopla was described by Henry in 1940 from the Malabar region of South India. Henry described two species under this genus, M. guttata and M. rubra. The female type specimens of Mopla are deposited in the Natural History Museum, London, UK. There have been no further records of these two species since their description. Seventy-six years later, the first male specimen of the genus Mopla was discovered in the Western Ghats, Kerala, India, in 2016. This paper describes the specimen, thought to be of Mopla guttata, and reconsiders its systematic placement

Nutritional evaluation of commercially important fish species of Lakshadweep archipelago, India.

Estimation of nutrition profile of edible fishes is essential and thus a bio-monitoring study was carried out to find out the nutritional composition of commonly available fishes in Agatti Island water of Lakshadweep Sea. Protein, carbohydrate, lipid, ash, vitamin, amino acid and fatty acid composition in the muscle of ten edible fish species were studied. Proximate analysis revealed that the protein, carbohydrate, lipid and ash contents were high in Thunnus albacares (13.69%), Parupeneus bifasciatus (6.12%), Hyporhamphus dussumieri (6.97%) and T. albacares (1.65%), respectively. Major amino acids were lysine, leucine and methionine, registering 2.84-4.56%, 2.67-4.18% and 2.64-3.91%, respectively. Fatty acid compositions ranged from 31.63% to 38.97% saturated (SFA), 21.99-26.30% monounsaturated (MUFAs), 30.32-35.11% polyunsaturated acids (PUFAs) and 2.86-7.79% branched fatty acids of the total fatty acids. The ω-3 and ω-6 PUFAs were ranged 13.05-21.14% and 6.88-9.82% of the total fatty acids, respectively. Hence, the fishes of Lakshadweep Sea are highly recommended for consumption, since these fishes are highly enriched with nutrition. The results can be used as a baseline data for comparing the various nutritional profiles of fishes in future