scholarly journals Wooden Toy of Chennapatna, India: Beauty of Form & Socio-Cultural Reflection on the Characterization of Toy

2021 ◽  
Vol 9 (2) ◽  
pp. 21-25
Author(s):  
Pradipta Biswas
Keyword(s):  
Cultural Issues ◽  
Community Based ◽  
Environment Friendly ◽  
Natural Substance ◽  
Living Tradition ◽  
Art Forms ◽  
Folk Tradition

Toy making is a part of almost every civilisation, and still, it is continuing as a living tradition in so many countries. Toys play an overall growth for a child. It developed a child mentally, physically, socially, and emotionally. Though it has started as a folk tradition or community-based craft, it has commercial and strong aesthetical value. This study focused on the Chennapatna toy from India. Chennapatna toy is a environment-friendly toy made with softwood, natural colour, and lacquer. This study critically analyses the beauty of the form of Chennapatna toys and also explore how this toy is made by natural substance. Like other art forms, toys also represent art, culture, religion, society, and civilisation. This study also critically analyses the socio-cultural issues, which are well reflected through this toy-making tradition.

scholarly journals Characterization of a Novel CaCO3-Forming Alkali-Tolerant Rhodococcus erythreus S26 as a Filling Agent for Repairing Concrete Cracks

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2967
Author(s):  
Seunghoon Choi ◽  
Sungjin Park ◽  
Minjoo Park ◽  
Yerin Kim ◽  
Kwang Min Lee ◽  
...  
Keyword(s):  
Building Materials ◽  
Culture Fluid ◽  
Natural Phenomenon ◽  
Environment Friendly ◽  
Wide Range ◽  
Filling Agent ◽  
Calcium Source ◽  
Alkali Tolerance ◽  
High Alkali

Biomineralization, a well-known natural phenomenon associated with various microbial species, is being studied to protect and strengthen building materials such as concrete. We characterized Rhodococcus erythreus S26, a novel urease-producing bacterium exhibiting CaCO3-forming activity, and investigated its ability in repairing concrete cracks for the development of environment-friendly sealants. Strain S26 grown in solid medium formed spherical and polygonal CaCO3 crystals. The S26 cells grown in a urea-containing liquid medium caused culture fluid alkalinization and increased CaCO3 levels, indicating that ureolysis was responsible for CaCO3 formation. Urease activity and CaCO3 formation increased with incubation time, reaching a maximum of 2054 U/min/mL and 3.83 g/L, respectively, at day four. The maximum CaCO3 formation was achieved when calcium lactate was used as the calcium source, followed by calcium gluconate. Although cell growth was observed after the induction period at pH 10.5, strain S26 could grow at a wide range of pH 4–10.5, showing its high alkali tolerance. FESEM showed rhombohedral crystals of 20–60 µm in size. EDX analysis indicated the presence of calcium, carbon, and oxygen in the crystals. XRD confirmed these crystals as CaCO3 containing calcite and vaterite. Furthermore, R. erythreus S26 successfully repaired the artificially induced large cracks of 0.4–0.6 mm width.

An assessment on production and engine characterization of a novel environment-friendly fuel

Fuel ◽  
2020 ◽  
Vol 279 ◽  
pp. 118558 ◽  
Author(s):  
Krishnamoorthy Ramalingam ◽  
Dhinesh Balasubramanian ◽  
Paul James Thadhani Joshua Stephen Chellakumar ◽  
Jagan Padmanaban ◽  
Parthasarathy Murugesan ◽  
...  
Keyword(s):  
Environment Friendly ◽  
Novel Environment

Preparation and Characterization of Starch/PVA Blend for Biodegradable Packaging Material

2010 ◽  
Vol 123-125 ◽  
pp. 351-354 ◽  
Author(s):  
Fahmida Parvin ◽  
Md. Arifur Rahman ◽  
Jahid M.M. Islam ◽  
Mubarak A. Khan ◽  
A.H.M. Saadat
Keyword(s):  
Mechanical Properties ◽  
Packaging Material ◽  
Rice Starch ◽  
Packaging Materials ◽  
Casting Method ◽  
Environment Friendly ◽  
Elongation At Break ◽  
Biodegradable Packaging ◽  
Soil And Water

Polymer films of rice starch/Polyvinyl alcohol (PVA) were prepared by casting method. Different blends were made varying the concentration of rice starch and PVA. Tensile strength (TS) and elongation at break (Eb) of the prepared films were studied. Films made up of rice starch and PVA with a ratio of 2:8 showed highest TS. 10% sugar was added with highest TS giving four composition of Starch/PVA blend in order to increase TS and Eb. Films made up of rice starch and PVA and sugar with a ratio of 1:8:1 showed highest TS and Eb and the recorded value was 14.96MPa and 637% respectively. The physico-mechanical properties of the prepared sugar incorporated films were improved by grafting with acrylic monomer with the aid of UV radiation. A formulation was prepared with monomer, methylmethacrylat in methanol, and a photo initiator. The highest TS of the grafted films were recorded and the value was 16.38 MPa. The water uptake and weight loss in both soil and water of the grafted films are lower than the non-grafted films. The prepared films were further characterized with stereo micrograph and XRD. Finally, the produced film can be used as biodegradable packaging materials for shopping and garbage bags that are very popular and environment friendly.

Green synthesis, characterization of Radix Hedysari-mediated silver nanoparticles and its sensitive colorimetric detection for Pb2+ in Yellow River Medium

2022 ◽  
Author(s):  
Jiahui Ji ◽  
Huifang Wu ◽  
Donghan Wang ◽  
Dan Liu ◽  
Xinyue Chen ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Yellow River ◽  
Colorimetric Detection ◽  
Environment Friendly ◽  
Alcohol Extract

In this study, a safe, rapid, and environment-friendly green synthesis for silver nanoparticles using the alcohol extract of Radix Hedysari (RH-AgNPs) was developed, the alcohol extract of Radix Hedysari (RH)...

A comparative study performance of cationic organic montmorillonite prepared by different methods

2018 ◽  
Vol 25 (1) ◽  
pp. 53-58 ◽  
Author(s):  
Daojin Zhou ◽  
Zepeng Zhang ◽  
Jialun Tang ◽  
Sanqin Wu ◽  
Jiali Zhao
Keyword(s):  
Thermal Stability ◽  
Contact Angle ◽  
Comparative Study ◽  
Environment Friendly ◽  
Organic Montmorillonite ◽  
Loop Area ◽  
Structures And Properties ◽  
Swelling Capacity ◽  
Study Performance

AbstractIn this paper, cationic organic montmorillonites (OMts) were prepared by dry, semi-dry, and wet methods. The structures and properties of these OMts according to the modification methods were studied. By the characterization of XRD, TG-DTA, lipophilicity, and thixotropy, the results showed that cationic OMt prepared by wet method with sufficient surfactants had better properties, including contact angle, swelling capacity, thixotropic loop area, and thermal stability compared with cationic OMt prepared by dry and semi-dry methods. Attention should be paid that with low ratio amount of surfactants used, cationic OMt prepared by the semi-dry method had favorable properties compared with cationic OMt prepared by wet method, and it had the potential to be applied in industrial field due to its environment-friendly and modification efficiency characteristics.

Comparison of tribological performances of sulfur based and boron succuminide containing antiwear additive with ZDDP by engine bench tests

2016 ◽  
Vol 68 (4) ◽  
pp. 482-496 ◽  
Author(s):  
Doğuş Özkan ◽  
M. Barış Yağci ◽  
Özgür Birer ◽  
Hakan Kaleli
Keyword(s):  
Antiwear Additive ◽  
Lubricating Oil ◽  
Free Products ◽  
Environment Friendly ◽  
Content Type ◽  
Bench Tests ◽  
Lubrication Oil ◽  
Lubrication Oils ◽  
Tribological Characterization

Purpose This study aims to evaluate and compare by 100 hours engine bench tests the tribological performances of two types of lubrication oils, which were sulfur-based, boron succinimide-containing antiwear package (NP-3) oil and conventional zinc dialkyldithiophosphate (ZDDP)-containing (R-1) oil. Design/methodology/approach The tribological performances of the oils were evaluated in three main contexts, including engine tests, physical/chemical changes and surface analysis. Findings Results showed that NP-3 lubrication oil, which was environment- and catalyst-friendly, can be an alternative lubrication oil with its tribological performance due to similar antiwear characteristics with the ZDDP. Originality/value Attempts to develop catalysis- and environment-friendly antiwear additive packages have not presented popular or commonly used ZDDP-free products for the vehicle industry. This study presents tribological characterization of a newly developed ZDDP-free lubricating oil by engine bench tests.

scholarly journals Long-term community-based monitoring of tamaraw Bubalus mindorensis on Mindoro Island, Philippines

Oryx ◽  
2014 ◽  
Vol 49 (2) ◽  
pp. 352-359 ◽  
Author(s):  
Shinya Ishihara ◽  
Rodel M. Boyles ◽  
Hisashi Matsubayashi ◽  
Arnel N. del Barrio ◽  
Merben R. Cebrian ◽  
...  
Keyword(s):  
Age Structure ◽  
Reproductive Rate ◽  
Community Based ◽  
Project Staff ◽  
Core Habitat ◽  
Reproductive Rates ◽  
Vantage Points ◽  
Mindoro Island

AbstractThe Critically Endangered tamaraw Bubalus mindorensis is endemic to Mindoro Island, Philippines, and little is known of its ecology. During 2006–2011 we used community-based monitoring to examine the population status and ecology of tamaraw in the species’ core habitat of Mount Iglit–Baco National Park. Each year, for 5 consecutive days at the end of the dry season, trained local volunteers and rangers or project staff were allocated to 18 vantage points in the study area (c. 160 km2). Tamaraw were categorized as adult (> 5 years), juvenile (2–5 years) or calf (< 2 years), and sexed when possible. During the study period the population was 239–314 (mean 271), with no significant fluctuations in age structure (percentage of adults, juveniles and calves: 57.8, 21.0 and 21.3%) or estimated adult female reproductive rates (29.1%). In adults, but not in juveniles, the sex ratio was biased towards females (1 : 1.86, P < 0.01). Bulls were often solitary (32.2% of sightings), whereas the majority of cows (94.7%) formed small groups of 2–12 individuals of different ages, with or without bulls (53.4 and 46.6%, respectively). These results demonstrate that the population remained relatively stable, maintaining a constant age structure and reproductive rate, and that long-term community-based monitoring was effective for quantitative characterization of the tamaraw's social behaviour, which is critical for conservation and management of the species.

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