Results 41 to 50 of about 18,975 (262)

Interactive Prompt‐Guided Robotic Grasping for Arbitrary Objects Based on Promptable Segment Anything Model and Force‐Closure Analysis

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
A laser pointer‐guided robotic grasping method for arbitrary objects based on promptable segment anything model and force‐closure analysis is presented. Grasp generation methods based on force‐closure analysis can calculate the optimal grasps for objects through their appearances. However, the limited visual perception ability makes robots difficult to
Yan Liu   +5 more
wiley   +1 more source

New records of sharks (Elasmobranchii) from the Andaman and Nicobar Archipelago in India with notes on current checklists

open access: yesBiodiversity Data Journal, 2018
The diversity of sharks occurring off the Andaman and Nicobar Archipelago in India has received increased attention in recent years. Yet, available checklists are out of date, often with inaccurate information and a number of commercially important ...
Zoya Tyabji, Rima Jabado, Dipani Sutaria
doaj   +3 more sources

The influence of light on elasmobranch behavior and physiology: a review

open access: yesFrontiers in Marine Science, 2023
In this review, we summarize the state of knowledge of the influence of light on the activity and physiology of elasmobranchs (sharks, skates, rays, and sawfish). These are a diverse group with great economic and ecological importance.
Daire Carroll   +2 more
doaj   +1 more source

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman   +4 more
wiley   +1 more source

First Detection of Photobacterium spp. in Acute Hemorrhagic Septicemia from the Nursehound Shark Scyliorhinus stellaris

open access: yesFishes, 2023
The nursehound Scyliorhinus stellaris is a threatened shark species and its population in the Mediterranean Sea is declining. Programs for captive breeding and repopulation in marine protected areas (MPA) are being carried out.
Gaetano Catanese, Amalia Grau
doaj   +1 more source

Shark teeth [PDF]

open access: yesBritish Dental Journal, 2021
A, Venugopal, A, Marya, M I, Karobari
openaire   +2 more sources

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato   +4 more
wiley   +1 more source

Complete mitochondrial genome and phylogenetic analysis of the copper shark Carcharhinus brachyurus (Günther, 1870)

open access: yesMitochondrial DNA. Part B. Resources, 2021
Copper shark (Carcharhinus brachyurus Günther, 1870) is one of the most widely distributed but least known species in the family Carcharhinidae. Herein, we report the first complete mitogenome of C. brachyurus.
Sang Wha Kim   +11 more
doaj   +1 more source

Home - About - Disclaimer - Privacy