366 research outputs found
Reevaluating the perception of Space:Is Space Truly Black or colorless?
No full textThis research explores a fundamental question in astrophysics: Is space truly black, or does it only appear so due to the absence of light? Challenging the conventional view that space is inherently black, the author proposes that space is actually colorless, and the perception of blackness is a result of the lack of light particles reaching the observer’s eye. The paper evaluates the nature of natural light, including that from stars and the Sun, and argues that no natural source emits black as part of its spectrum. This independent research is authored by Sivakumar, an original thinker based in India, and aims to stimulate deeper inquiry into cosmic perception, light behavior, and the limitations of human visual understanding in interpreting space
Reevaluating the perception of Space:Is Space Truly Black or Colorless?
No full textThis research explores a fundamental question in astrophysics: Is space truly black, or does it only appear so due to the absence of light? Challenging the conventional view that space is inherently black, the author proposes that space is actually colorless, and the perception of blackness is a result of the lack of light particles reaching the observer’s eye. The paper evaluates the nature of natural light, including that from stars and the Sun, and argues that no natural source emits black as part of its spectrum. This independent research is authored by Sivakumar, an original thinker based in India, and aims to stimulate deeper inquiry into cosmic perception, light behavior, and the limitations of human visual understanding in interpreting space. The paper has been submitted to OSF to ensure transparent sharing, open feedback, and archival of this work for the scientific community
Diaphragmatic crural eventration
No full textAim: We evaluated patients with gastric volvulus secondary to diaphragmatic pathology. Materials and Methods: Eight patients (5 males and 3 females) presented to the author in a tertiary care center during 1997-2006 were analyzed in terms of age, sex, symptomatology, diagnosis and predisposing factors. Observations: Six had an acute presentation and rest had chronic symptomatology. The two patients who had total gangrene stomach died postoperatively and one patient died preoperatively due to aspiration. All the cases presented with acute symptoms had diaphragmatic pathology, and out of these, three cases had the specific entity, which is named as diaphragmatic crural eventration. Conclusions: Diaphragmatic crural eventration is characterized by the defective development of the right crus of diaphragm, and this is embryologically significant as the right crus and ligaments of the stomach develop from dorsal mesoesophagus and mesogastrium. The author recommends a closer look for this defect of diaphragm while operating a case of gastric volvulus
Cavitation Technology—Potential Way of Generating Nanomaterials and Nanoemulsions for Wider Technological Applications
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Acceptance of technology by parent fraternity as a means of remote learning for children: An empirical study
No full textThe main purpose of this empirical study is to understand how acceptance of technology is prevailing among the parent fraternity that helps them to develop a positive attitude towards using technology as a tool to enhance their ward’s learning process. A survey among 6361 parents (Indian origin) of primary school students (Kindergarten and primary level) regarding their perceived usefulness and perceived ease of use regarding technology-assisted learning for their wards to understand how these factors influence their attitude towards technology for learning in the future was carried out through an online questionnaire. The result showed that the more parents found the Usage of Technology towards the e-learning process of their wards, the higher they tend to adopt the technology by exhibiting a positive Attitude towards Technology while the perception of Ease of Use of Technology also significantly predicted the perception of Attitude towards Technology. The favourable Attitude towards Technology is more visible among the parents of students who are of lower levels of study as compared to those who are at a slightly higher level of study. It is found that the parents of the student from the rural area schools possessed positive Attitudes towards Technology as compared to their counterparts in the urban areas. The outcome of this study is of greater relevance to the schools especially in the lower level classes to help students to harness technology from a young age because the parent fraternity is already in favour of such initiative
Cavitation Technology—The Future of Greener Extraction Method: A Review on the Extraction of Natural Products and Process Intensification Mechanism and Perspectives
No full textWith growing consumer demand for natural products, greener extraction techniques are found to be potential alternatives especially for pharmaceutical, nutraceutical, and cosmetic manufacturing industries. Cavitation-based technology has drawn immense attention as a greener extraction method, following its rapid and effective extraction of numerous natural products compared to conventional techniques. The advantages of cavitation-based extraction (CE) are to eliminate the application of toxic solvents, reduction of extraction time and to achieve better extraction yield, as well as purity. The cavitational phenomena enhance the extraction efficiency via increased mass transfer rate between the substrate and solvent, following the cell wall rupture, due to the intense implosion of bubbles. This review includes a detailed overview of the ultrasound-assisted extraction (UAE), negative pressure cavitation (NPC) extraction, hydrodynamic cavitation extraction (HCE) and combined extractions techniques which have been implemented for the extraction of high-value-added compounds. A list of essential parameters necessary for the maximum possible extraction yield has been discussed. The optimization of parameters, such as ultrasonic power density, frequency, inlet pressure of HC, extraction temperature and the reactor configuration denote their significance for better efficiency. Furthermore, the advantages and drawbacks associated with extraction and future research directions have also been pointed out
ChemInform Abstract: Novel Regio‐ and Stereoselective Synthesis of Functionalized 3‐Spiropyrrolidines and 3‐Spiropyrrolizidines Using the Baylis—Hillman Adducts Derived from Nitroolefins.
No full textChemInform Abstract: First Friedel-Crafts Reaction of the Baylis-Hillman Adducts Derived from Nitroolefins: Application Towards Synthesis of Pyrrolidines and Spiropyrrolidines.
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