Results 41 to 50 of about 33,154 (273)

Production of Castings with Differentiated Surface Properties [PDF]

Research Bulletin of the National Technical University of Ukraine "Kyiv Politechnic Institute", 2017
Problems. Surface layers get the most intensive external influences during the operation of molded parts of machines and mechanisms, therefore their structure and properties determine the operability of products as a whole. To achieve high surface strength and durability of parts, various technological processes are used in the industry, but most of ...
Alexander G. Kovalchuk, Mykhailo M. Yamshinskij, Grigoriy E. Fedorov   +2 more
openaire   +1 more source

The Unusual Neotenic System of the Asian Dry Wood Termite, Neotermes koshunensis (Isoptera: Kalotermitidae)

Sociobiology, 2013
In most lower termites, colonies are headed by neotenic reproductives of both sexes after the primary reproductives (i.e., the queen and king) are lost.
Yasushi Miyaguni, Koji Sugio, Kazuki Tsuji   +2 more
doaj   +3 more sources

Repeated evolution of soldier sub-castes suggests parasitism drives social complexity in stingless bees

Nature Communications, 2017
Although common in ants and termites, worker differentiation into physical castes is rare in social bees and unknown in wasps. Here, Grüter and colleagues find a guard caste in ten species of stingless bees and show that the evolution of the guard caste ...
Christoph Grüter, Francisca H. I. D. Segers, Cristiano Menezes, Ayrton Vollet-Neto, Tiago Falcón, Lucas von Zuben, Márcia M. G. Bitondi, Fabio S. Nascimento, Eduardo A. B. Almeida   +8 more
doaj   +1 more source

Chemical Components of Dufour’s and Venom Glands in Camponotus japonicus (Hymenoptera, Formicidae)

Insects, 2023
The Dufour’s and venom glands are the most developed glands connected to the female reproductive organs, playing important roles in defense, foraging, information exchange, and reproduction in ants. The main chemical secretions of these glands vary among
Wenjing Xu, Mengqin Zhao, Lingxiao Tang, Ruoqing Ma, Hong He   +4 more
doaj   +1 more source

Developing a critical caste analysis within information science and technology: A research review: An annual review of information science and technology paper

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Caste—an ascriptive social hierarchy in South Asia and its diaspora—is a globalized phenomenon. Recent caste‐based discrimination, particularly in technology companies and anti‐caste efforts to address it, has compelled academia, policy, and the technology industry to better understand contemporary mechanics of caste.
Nayana Kirasur, Britt Paris
wiley   +1 more source

Civilising pedagogies: An ethnography of instructional and regulative discourses in government schools in Delhi, India

British Educational Research Journal, EarlyView.
Abstract Over the years, surveys and data on learning outcomes have consistently shown inadequate levels of learning in schools in India, witnessing a further decline in recent years. Studies within the sociology of education have consistently highlighted the overarching role of class and caste on learning outcomes in schools. Neoliberal policy reforms
Akshita Rawat
wiley   +1 more source

Transcriptomic changes during caste development through social interactions in the termite Zootermopsis nevadensis

Ecology and Evolution, 2019
One of the most striking examples of phenotypic plasticity is the different phenotypes (i.e., castes) within a same nest of social insects. Castes usually derive from a single genotype initially by receiving social cues among individuals during ...
Hajime Yaguchi, Ryutaro Suzuki, Masatoshi Matsunami, Shuji Shigenobu, Kiyoto Maekawa   +4 more
doaj   +1 more source

Loss, persistence and reversal of phenotypic traits

Biological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni, Giuseppe Fusco, Filippo Nicolini, Heather Bruce, Andrea Luchetti   +4 more
wiley   +1 more source

CASTE DEVELOPMENT IN HYMENOPTERA, A MOLECULAR VIEW FOR FARMING IMPROVEMENT OF STINGLESS BEES

Tropical and Subtropical Agroecosystems
Background: The evolution and genetic elements for the development of the caste is an enigma in Hymenoptera, as well as the total impact that the genetic elements given in the food of the larvae have on the development of bees.
D.M. Moreno-Cálix, F. Guillén-Chable, M.A. Gallardo Flores, K.J. Cantarero, L.C. Rodríguez-Zapata, Enrique Castano   +5 more
doaj   +1 more source

Queer configurations: The female divine, regional identity, and Queer‐religious belonging in South India

Feminist Anthropology, EarlyView.
Abstract This article explores how queerness and religion intersect in a unique enactment of Bathukamma, a flower festival honoring the female divine in Hyderabad, the capital of the South Indian state of Telangana. Drawing on theories of figuration, I analyze how local queer organizations celebrate the festival in a way that engages two distinctive ...
Stefan Binder
wiley   +1 more source