Bibliografie tematiche / Forager worker bees

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Letteratura scientifica selezionata sul tema "Forager worker bees"

Autore: Grafiati

Pubblicato: 7 giugno 2025

Ultima modifica: 2 agosto 2025

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Articoli di riviste sul tema "Forager worker bees"

Sushil, Kumar. "Effect of Biopesticide Neem oil on Amino Acid contents of Foragers honeybee Apis mellifera L." International Journal of Research and Analytical Reviews 6, no. 1 (2019): 924–28. https://doi.org/10.5281/zenodo.15380690.

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ABSTRACTThe effect sublethal concentrations (¼ and ½ of LC50 at 96 hrs.) of biopesticide neem oil – 25 EC was studied on the forager bees (25 days old worker bees) of Italian honeybee Apis mellifera L. The results indicated that there were no significant alteration in total amino acid contents in forager bees at either sublethal concentration level-1(¼ of LC50 at 96 hrs) or concentration-2 (½ of LC50 at 96 hrs.) of neem oil treated bees over control bees. Although field experiments are inevitable for further confirmations of lethality of neem oil on honeybees.

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Sokół, Rajmund, and Maria Michalczyk. "Detection of Nosema spp. in worker bees, pollen and bee bread during the honey flow season." Acta Veterinaria Brno 85, no. 3 (2016): 261–66. http://dx.doi.org/10.2754/avb201685030261.

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Nosema apis and Nosema ceranae are responsible for nosemosis in the honey bee (Apis mellifera). The aim of the study was to identify Nosema spp. during the honey flow season in bee colonies, for co-infection or no infection with Nosema apis/Nosema ceranae. Hive bees, forager bees, pollen grains brought by them, and bee bread were analysed. In the infected group, 12 of 30 samples of hive bees were infected with Nosema ceranae, 7 were co-infected, 3 were infected with Nosema apis. In samples of forager bees, 21 of 30 were co-infected, 8 were infected with Nosema ceranae. The analysis of pollen d

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Rahman, Seydur, Ibamelaker Thangkhiew, and Sudhanya R. Hajong. "Hypopharyngeal Gland Activity in Task-Specific Workers Under Brood and Broodless Conditions in Apis Cerana Indica (Fab.)." Journal of Apicultural Science 58, no. 2 (2014): 59–70. http://dx.doi.org/10.2478/jas-2014-0022.

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Abstract The hypopharyngeal gland (HPG) is the principal organ of protein synthesis in honey bees. It is involved in larval rearing. We examined the fresh head weight, HPG acini diameter, and HPG protein content in worker bees engaged in different tasks and under brood and broodless conditions. Scanning electron microscopy revealed that the HPG acini diameter of worker bees was related to their task. The highest HPG volume was found in nurse bees, and the volume regressed when the task changed from guarding to foraging. The fresh head weight was positively correlated with HPG acini diameter. A

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Ihle, Mutti, Kaftanoglu, and Amdam. "Insulin Receptor Substrate Gene Knockdown Accelerates Behavioural Maturation and Shortens Lifespan in Honeybee Workers." Insects 10, no. 11 (2019): 390. http://dx.doi.org/10.3390/insects10110390.

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In animals, dietary restriction or suppression of genes involved in nutrient sensing tends to increase lifespan. In contrast, food restriction in honeybees (Apis mellifera) shortens lifespan by accelerating a behavioural maturation program that culminates in leaving the nest as a forager. Foraging is metabolically demanding and risky, and foragers experience increased rates of aging and mortality. Food-deprived worker bees forage at younger ages and are expected to live shorter lives. We tested whether suppression of a molecular nutrient sensing pathway is sufficient to accelerate the behaviou

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Sokół, Rajmund, and Maria Michalczyk. "Detection of Nosema spp. in Worker Bees of Different Ages During the Flow Season." Journal of Apicultural Science 56, no. 2 (2012): 19–25. http://dx.doi.org/10.2478/v10289-012-0020-z.

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Abstract The aim of this study was to identify which Nosema species infect those Apis mellifera worker bees performing different functions in the colony. Samples were taken from different places inside and outside the hive, in the honey flow season. In February 2010, winter hive debris from 30 colonies was analyzed, and based on the microsporidian species identified by multiplex PCR. The following bee colonies (none of which displayed clinical symptoms of the disease) were selected for further analyses to determine the occurrence of microsporidian parasites: 1) colony A/C infected with Nosema

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Cameron, Sydney A., Sarah A. Corbet, and James B. Whitfield. "Bumble bees (Hymenoptera: Apidae: Bombus terrestris) collecting honeydew from the giant willow aphid (Hemiptera: Aphididae)." Journal of Hymenoptera Research 68 (February 25, 2019): 75–83. http://dx.doi.org/10.3897/jhr.68.30495.

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Only rarely have bumble bees (Bombus) been observed collecting honeydew from aphids (Aphididae) feeding on phloem sap. This behavior may be rare because the percentage of sugar in honeydew egested from aphids is generally well below the sugar concentration in floral nectars preferred by bumble bees. Nonetheless, in August 2018, near St. Buryan, Penzance, Cornwall, UK (56.0602N; -5.6034W) we observed large numbers of wild Bombusterrestris (Linnaeus) collecting honeydew from a colony of the giant willow aphid Tuberolachnussalignus Gmelin feeding on the stems of the willow Salixalba. Unlike aphid

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Only rarely have bumble bees (Bombus) been observed collecting honeydew from aphids (Aphididae) feeding on phloem sap. This behavior may be rare because the percentage of sugar in honeydew egested from aphids is generally well below the sugar concentration in floral nectars preferred by bumble bees. Nonetheless, in August 2018, near St. Buryan, Penzance, Cornwall, UK (56.0602N; -5.6034W) we observed large numbers of wild Bombus terrestris (Linnaeus) collecting honeydew from a colony of the giant willow aphid Tuberolachnus salignus Gmelin feeding on the stems of the willow Salix alba. Unlike ap

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Okada, Ryuichi, Hidetoshi Ikeno, Hitoshi Aonuma, Midori Sakura, and Etsuro Ito. "Honey Bee Waggle Dance as a Model of Swarm Intelligence." Journal of Robotics and Mechatronics 35, no. 4 (2023): 901–10. http://dx.doi.org/10.20965/jrm.2023.p0901.

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Honey bees are social insects that form colonies (hives), which often consist of more than 10,000 individuals. In a colony, bees allocate jobs (division of labor) and work cooperatively and intelligently to maintain the colony’s activity, such as nursing broods, cleaning, and guarding against enemies. Among worker bees, only forager bees collect food, and success in finding food directly influences colony survival. For more efficient foraging, honey bees share location information pertaining to profitable food sources through specific behavior called “waggle dances.” During such dances, the di

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Trhlin, M., and J. Rajchard. " Chemical communication in the honeybee (Apis mellifera L.): a review." Veterinární Medicína 56, No. 6 (2011): 265–73. http://dx.doi.org/10.17221/1543-vetmed.

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An important area of physiology of the honeybee (Apis mellifera) is chemical communication between individuals and castes in the swarm, which maintains its integrity and function. The highly complex social organization of honeybees is mediated through pheromones. Releaser pheromones cause rapid changes in the behaviour of the recipient, while primer pheromones have relatively slow and long-term effects on the physiology and behaviour of the recipient. Queen retinue pheromone (QRP) is a blend of the nine compounds (9-oxo-(E)-2-decenoic acid, (R)- and (S)-9-hydroxy-(E)-2-decenoic acid, methyl p-

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Bouarara, Hadj Ahmed, Reda Mohamed Hamou, and Abdelmalek Amine. "Text Clustering using Distances Combination by Social Bees." International Journal of Information Retrieval Research 4, no. 3 (2014): 34–53. http://dx.doi.org/10.4018/ijirr.2014070103.

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Recently, the researchers proved that 90% of the information existed on the web, were presented in unstructured format (text free). The automatic text classification (clustering), has become a crucial challenge in the computer science community, where Most of the classical techniques, have known different problems in terms of time execution, multiplicity of data (marketing, biology, economics), and the initialization of cluster number. Nowadays, the bio-inspired paradigm, has known a genuine success in several sectors and particularly in the world of data-mining. The content of our work, is a

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Più fonti

Libri sul tema "Forager worker bees"

Lund, Erik. War for the Every Day. www.greenwood.com, 1999. http://dx.doi.org/10.5040/9798216188308.

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A study of operational warfare in the Habsburg old regime, 1683-1740, which recreates everyday warfare and the lives of the generals conducting it, this book goes beyond the battlefield to examine the practical skills of war needed in an agricultural landscape of pastures, woods, and water. Although sieges, forages, marches, and raids are universally considered crucial aspects of old regime warfare, no study of operational or maneuver warfare in this period has ever been published. Early modern warfare had an operational component which required that soldiers possess or learn many skills groun

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Wade, Nicholas. Psychologists in Word and Image. The MIT Press, 1995. http://dx.doi.org/10.7551/mitpress/5671.001.0001.

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We are all fascinated by physiognomy, intrigued by the appearance of the people we admire. These perceptual portraits of more than 100 thinkers who have fashioned our understanding of mind and behavior provide an alternative view of the history of psychology that is both pleasing and puzzling. Francis Bacon, René Descartes, Pierre Broca, Sigmund Freud, Carl Jung, Ruth Benedict, Allen Newell, David Marr and scores of others whose ideas have made psychology an empirical discipline emerge from motifs specifically drawn by the author or derived from a figure or text in one of the portrayed person'

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Capitoli di libri sul tema "Forager worker bees"

Goulson, Dave. "Foraging Cues Gained from Other Bees." In Bumblebees. Oxford University PressOxford, 2009. http://dx.doi.org/10.1093/oso/9780199553068.003.0010.

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Abstract The waggle dance of the honey bee has been frequently described and much studied, and is one of the most complex systems known in insect communication; indeed, far more information is conveyed than can be managed by most vertebrates. In contrast, it has long been assumed that foraging in bumblebees is essentially a solitary endeavour— that workers do not communicate with each other about good sources of forage, so that each individual has to learn for itself which flowers provide reward. Indeed, it has been known for many years that bumblebees (of a range of species) are unable to rec

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Bouarara, Hadj Ahmed, Reda Mohamed Hamou, and Amine Rahmani. "BHA2." In Scholarly Ethics and Publishing. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8057-7.ch018.

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In the last decade, the plagiarism cases were increased and become a topical problem in the modern scientific world, caused by the quantity of textual information available online/offline. The authors' work deals on the development of a new plagiarism detector system called BHA2 which has as input the suspicious text (to be analysed) and the original texts (learning basis). It can detect the different forms of plagiarism based on: Google API to detect the cases of plagiarism with translation; text summarization to detect the plagiarism of idea; conceptual transformation to detect the plagiaris

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Bird-David, Nurit. "A Continuum of Relatives." In Us, Relatives. University of California Press, 2017. http://dx.doi.org/10.1525/california/9780520293403.003.0012.

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Foragers’ relations with others have been explored in terms of boundaries, intergroup relations, and othering, in studies that have paid little or no attention to the tiny-scale context of their plural life and their own imaginations of communities. This chapter explores the “edges” of a forager community and compares their and their nonforager neighbors’ respective concepts of groupness. The ethnography spans the recent entry of the word boundary into local discourse, and intermarriages and close friendships with distant relatives and with migrants (plantation workers who have settled in the

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Agus, Ali, and Agussalim Agussalim. "Approach for the Domestication and Propagation of Stingless Bees." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-6265-2.ch004.

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Domestication and propagation in stingless bees is called meliponiculture. The aims of meliponiculture are to make it easier to control the colonies health and development and to make it easy when harvesting stingless bee products (honey, bee bread, and propolis), furthermore, for advanced study and development like multiple colonies, to produce honey, bee bread, and propolis. Therefore, this paper focuswa on stingless bees Tetragonula laeviceps: the domestication and propagation technique, production of stingless bee products (honey, bee bread, and propolis), the daily activity of workers (fo

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Bonabeau, Eric, Marco Dorigo, and Guy Theraulaz. "Introduction." In Swarm Intelligence. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195131581.003.0005.

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Insects that live in colonies, ants, bees, wasps, and termites, have fascinated naturalists as well as poets for many years. “What is it that governs here? What is it that issues orders, foresees the future, elaborates plans, and preserves equilibrium?,” wrote Maeterlinck [230]. These, indeed, are puzzling questions. Every single insect in a social insect colony seems to have its own agenda, and yet an insect colony looks so organized. The seamless integration of all individual activities does not seem to require any supervisor. For example, Leafcutter ants (Atta) cut leaves from plants and tr

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Goulson, Dave. "Social Organization and Conflict." In Bumblebees. Oxford University PressOxford, 2009. http://dx.doi.org/10.1093/oso/9780199553068.003.0003.

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Abstract With their fat and furry appearance, their slow, meandering flight amongst flowers and their docile behaviour, it is easy to dismiss bumblebees as charming but dim. Examination of a nest might confirm this opinion; it is, in appearance, a ramshackle affair compared to that of the honeybee. The pupal cells, honey pots and larvae are haphazardly arranged. Housekeeping is poor—bees often defecate in and close to the nest, and the nest is often overrun with parasites and commensals. For these reasons, and because of the difficulties involved in findings bumblebee nests, researchers were s

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Barker, Graeme. "Approaches to the Origins of Agriculture." In The Agricultural Revolution in Prehistory. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780199281091.003.0006.

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Humans have occupied our planet for several million years, but for almost all of that period they have lived as foragers, by various combinations of gathering, collecting, scavenging, fishing, and hunting. The first clear evidence for activities that can be recognized as farming is commonly identified by scholars as at about 12,000 years ago, at about the same time as global temperatures began to rise at the end of the Pleistocene (the ‘Ice Ages’) and the transition to the modern climatic era, the Holocene. Subsequently, a variety of agricultural systems based on cultivated plants and, in many

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Atti di convegni sul tema "Forager worker bees"

Kosolapov, Vladimir, Ilya Trofimov, Lyudmila Trofimova, and Elena Yakovleva. "100 years of the State Meadow Institute." In Multifunctional adaptive fodder production. Federal Williams Research Center of Forage Production and Agroecology, 2022. http://dx.doi.org/10.33814/mak-2022-28-76-9-18.

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100 years since the Establishment of the State Meadow Institute the Federal Williams Research Center of Forage Production & Agroecology celebrates in June 2022. The State Meadow Institute creation was event of the most important state significance. This event is extremely important for rational nature management, increasing soil fertility, obtaining high and sustainable crop yields, and preserving the productive longevity of our lands. In 1922 the Station for the study of forage plants and forage area was transformed into the State Meadow Institute (SMI). 1930 – SMI was transformed into th

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Fomina, M., Yu Ivanova, N. Bragin, and M. Bragina. "BREEDING OF GRAIN-FORAGE CROPS IN THE NORTHERN TRANS-URALS." In The state and problems of agricultural science in Yenisei Siberia. Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087908_80.

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The article presents the history of development of agriculture in the Tyumen region. The main achievements of Russian scientists, agronomists and breeders, who laid the foundation and created the basis for the work of successors, are described. As a result of many years of comprehensive study of crops, promising methods for creating new varieties of spring oats and barley in the Northern Trans-Urals have been developed. Over the past period of time, 15 varieties of oats and 9 varieties of barley have been created and transferred to the state variety testing. Currently, the state register of br

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Zarudnyy, Vladimir, Andrey Krasnoperov1, and Veronika BARDASh. "Breeding achievements of the Kaliningrad Research Institute of Agriculture – branch of the Federal Scientific Center “V. R. Williams Institute of Crops and Insemination." In Multifunctional adaptive fodder production. Federal Williams Research Center of Forage Production and Agroecology, 2025. https://doi.org/10.33814/mak-2024-33-81-40-46.

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In 2024, the Kaliningrad Research Institute of Agriculture – a branch of the Federal Scientific Center "VIK named after V. R. Williams" celebrates its 75th anniversary. This article summarizes the results of breeding and seed production work and discusses the prospects for further development of the research institution. Over the years, scientists have developed 30 varieties of 25 species of both traditional and non-traditional forage crops. In recent years, three new intensive-type varieties have been created and patented for the conditions of the Kaliningrad region: Festulolium Kaliningradsk

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ChUMAKOVA, Vera, Valeriy ChUMAKOV, Marina DEREVYaNNIKOVA, Nadezhda LEBEDEVA, Tat'yana MIRONOVA, and Sergey SUHAREV. "Adaptive varieties of forage grasses and their seed production in the North Caucasus region." In Multifunctional adaptive fodder production 29 (77). Federal Williams Research Center of Forage Production and Agroecology, 2022. http://dx.doi.org/10.33814/mak-2022-29-77-58-63.

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The article considers the main achievements of the Federal State Budgetary Scientific Institution "North Caucasian Federal National Research Center" in the field of forage grass breeding. Over a half-century period of work, 10 varieties of perennial legumes and 32 cereal grasses of a wide range of use and purpose, belonging to 28 species, have been created and included in the state register of breeding achievements of the Russian Federation. The possibility of effective cultivation of varieties in various soil and climatic conditions of the North Caucasus region for fodder and seed purposes is

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Popov, Vladimir. "Variable world of the nutritionist N. P. Volkov." In Multifunctional adaptive fodder production. Federal Williams Research Center of Forage Production and Agroecology, 2021. http://dx.doi.org/10.33814/mak-2021-25-73-158-169.

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Article is devoted to life and creativity of one of outstanding representatives of a zootechny of the XX-th century — to Nikolai Pavlovich Volkov. Well-educated (the zootechnician, cyberneticist, economist), he is the author of the unique project — variable norms of cattle feeding. It considers concrete conditions of economy, age, productivity, physiological state of animals, conditions of livestock keeping, a season of year, actual availability and quality of forages. After a semi-centennial period a factorial method again has been used by workings out of norms. Volkov’s original views on top

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Kostenko, Sergey, Natalia Kostenko, and Ekaterina Sedova. "Problems of breeding specialized varieties for soil improvement in organic farming in Russia." In Multifunctional adaptive fodder production. Federal Williams Research Center of Forage Production and Agroecology, 2025. https://doi.org/10.33814/mak-2024-33-81-32-39.

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Organic farming aimed at obtaining environmentally friendly food of the highest quality category is still relatively rare in Russian agriculture. Such agriculture is characterized by minimal use (up to complete abandonment of the use) of various pesticides and other agrochemicals. Tillage with such a farming system is also reduced to a minimum. At the same time, the use of siderates is of great importance. The most famous of them is seradella. But this culture is most widespread in the southern regions. In Western Europe, it has already been used for this purpose for hundreds of years. Other c

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Liu, Emma. "EXPLORING ANIMAL MOVEMENT BEHAVIOR WITH SWITCHING STATE SPACE MODELS." In BioTecnica 2024 –International Conference on Advances in Biological Sciences, 19-20 January, Tokyo. Global Research & Development Services, 2024. http://dx.doi.org/10.20319/icrlsh.2024.0415.

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Understanding animal movement is pivotal in addressing population dynamics. Bayesian statistical techniques have been concentrated in literature to study intricate animal movement, by adapting their analytically manageable likelihoods. With the utilization of Hidden Markov Models (HMMs), the study examines animal tracking data of one elk and highlights step lengths and turning angles across two states. Data is obtained from the work of Morales et al. (2004), titled "Extracting more out of relocation data: building movement models as mixtures of random walks." Collected using tracking systems,

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Peters, John E., ,. Daniel S. Esser, Abby M. Grillo, Nithin S. Kumar, Robert J. Webster III, and Eric J. Barth. "Toward In-Scanner Transforamenal Epilepsy Interventions: A Compact MR-Safe Concentric Tube Actuation System." In The Hamlyn Symposium on Medical Robotics. The Hamlyn Centre Imperial College London, 2024. http://dx.doi.org/10.31256/hsmr2024.41.

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Epilepsy affects more than 50 million people world- wide, afflicting patients with debilitating seizures. While antiepileptic drugs are available, 20-40% of patients remain medically refractory, leaving surgical interven- tion as the remaining option [1]. Hippocampal resec- tion is the gold standard surgical therapy, while laser interstitial thermal therapy (LITT) offers a minimally invasive alternative. Current LITT interventions involve delivery of thermal energy via a straight laser probe through a burr hole in the back of the skull under the guidance of magnetic resonance imaging (MRI). LI

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Vatanaprasan, P., S. Chumnanvej, J. Suthakorn, and S. Treratanakulchai. "Design Optimization of a Soft Robotic Manipulator for Intraventricular Hemorrhage Evacuation." In The Hamlyn Symposium on Medical Robotics. The Hamlyn Centre Imperial College London, 2024. http://dx.doi.org/10.31256/hsmr2024.27.

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Intraventricular hemorrhage (IVH) is bleeding inside the ventricular system of the brain. IVH evacuation is performed to remove blood products and relieve pressure. However, the procedure is challenging as the neurosurgeon must insert an endoscope through the brain cortex into the ventricle, potentially damaging the surrounding tissue due to the tilting required for visualization beyond a straight trajectory. As shown in Fig 1, when bleeding occurs in the temporal horn of the lateral ventricle, Kaufman’s point entry is used to access the bleeding site with a limited working window[1]. Several

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Rapporti di organizzazioni sul tema "Forager worker bees"

Bloch, G., and H. S. Woodard. regulation of size related division of labor in a key pollinator and its impact on crop pollination efficacy. United States-Israel Binational Agricultural Research and Development Fund, 2021. http://dx.doi.org/10.32747/2021.8134168.bard.

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Despite the rapid increase in reliance on bumble bees for food production and security, there are many critical knowledge gaps in our understanding of bumble bee biology that limit their colony production, commercial management, and pollination services. Our project focuses on the social, endocrine, and molecular processes regulating body size in the two bumble bee species most important to agriculture: Bombus terrestris in Israel, and B. impatiens in the USA. Variation in body size underline both caste (queen/worker) differentiation and division of labor among workers (foragers are typically

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Reisner, Jodie. Adaptation Workbook Case Study: Kettner Farm, Mulshoe, TX. Climate Hub, 2019. http://dx.doi.org/10.32747/2019.6875755.ch.

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The Adaptation Resources for Agriculture Workbook was jointly developed by USDA Climate Hubs and NRCS to support producers, service providers, and educators to manage climate change. The workbook helps producers consider both short-term adaptive management actions (<5 yrs) and long-range strategic plans (5 to 20 yrs, subject to farm type). This workbook pro-motes adaptation through multiple resources including a “menu” of adaptation strategies/approaches and example tactics for cropping and forages, confined livestock, grazing, orchards and small fruit and vegetable production systems. Rece

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Morrison, Mark, Joshuah Miron, Edward A. Bayer, and Raphael Lamed. Molecular Analysis of Cellulosome Organization in Ruminococcus Albus and Fibrobacter Intestinalis for Optimization of Fiber Digestibility in Ruminants. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7586475.bard.

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Improving plant cell wall (fiber) degradation remains one of the highest priority research goals for all ruminant enterprises dependent on forages, hay, silage, or other fibrous byproducts as energy sources, because it governs the provision of energy-yielding nutrients to the host animal. Although the predominant species of microbes responsible for ruminal fiber degradation are culturable, the enzymology and genetics underpinning the process are poorly defined. In that context, there were two broad objectives for this proposal. The first objective was to identify the key cellulosomal component

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