Results 51 to 60 of about 2,174 (175)

Micro/Nanoscale Acoustic Manipulation: From Particle Control to Autonomous Microswimmers

open access: yesAdvanced Science, Volume 13, Issue 55, 5 October 2026.
This conceptual framework illustrates acoustic technology as a multifunctional platform enabling passive particle manipulation across scales and autonomous propulsion of microswimmers. ABSTRACT Acoustic manipulation and propulsion technologies have emerged as powerful platforms for micro/nanoscale control, enabled by their non‐contact operation, label ...
Jiahui Chu   +4 more
wiley   +1 more source

Pre-Columbian Maya valveless tube trumpets

open access: yesJournal of Music Archaeology, 2023
There are some 77 representations of non-conch shell pre-Columbian trumpets known, but only one extant ceramic version survives. The others are known from paintings, engravings, and sculptures.
Mark Howell
doaj   +1 more source

Anatomical Study and Classification of Foramina of the Squamous Part of the Temporal Bone

open access: yesClinical Anatomy, Volume 39, Issue 7, Page 755-760, October 2026.
ABSTRACT The postglenoid foramen (PGF) is a rarely reported anatomical variant of the temporal bone, with limited data on its morphology, prevalence, and clinical relevance, particularly in non‐European populations. This study aimed to investigate the anatomy and frequency of foramina located on the squamous part of the temporal bone, including the PGF,
Tawanrat Paensukyen   +7 more
wiley   +1 more source

DESIGN AND OPTIMIZATION OF VALVELESS MICROPUMPS BY USING GENETIC ALGORITHMS APPROACH [PDF]

open access: yesJournal of Engineering Science and Technology, 2015
This paper presents a design optimization of valveless micropump using Genetic Algorithms (GA). The micropump is designed with a diaphragm, pumping chamber and diffuser/nozzle element functions as inlet and outlet of micropump with outer dimension of (5 ...
AIDA F. M. SHUKUR   +3 more
doaj  

Development of Diffuser/Nozzle Based Valveless Micropump

open access: yesJournal of Fluid Science and Technology, 2008
A valveless micropump was realized with a diffuser/nozzle shaped channel and a variable volume actuator which produces an oscillating flow. One-way flow may be realized in the nozzle direction since the pressure loss in a nozzle channel is lower than ...
Seiichi TANAKA   +2 more
doaj   +1 more source

A Novel Artificial Pancreas: Energy Efficient Valveless Piezoelectric Actuated Closed-Loop Insulin Pump for T1DM

open access: yesApplied Sciences, 2020
The objective of this work is to develop a closed-loop controlled insulin pump to keep the blood glucose level of Type 1 diabetes mellitus (T1DM) patients in the desired range.
Alp Kaçar   +2 more
doaj   +1 more source

Analytical and experimental study of a valveless piezoelectric micropump with high flowrate and pressure load

open access: yesMicrosystems & Nanoengineering, 2023
Miniaturized gas pumps based on electromagnetic effect have been intensively studied and widely applied in industries. However, the electromagnetic effect-based gas pumps normally have large sizes, high levels of noises and high power consumption, thus ...
Jiafeng Ni   +9 more
doaj   +1 more source

Calvarial Metastasis of Breast Carcinoma Manifesting as a New Daily Persistent Headache: A Case Report

open access: yesClinical Case Reports, Volume 14, Issue 8, August 2026.
ABSTRACT New‐onset daily persistent headache (NDPH) is a primary headache syndrome characterized by a sudden onset of daily headaches persisting for more than three months in patients with no prior headache history. We report the case of a 49‐year‐old Indian lady who presented to the neurology outpatient clinic with new daily persistent headache.
Neha Lall   +3 more
wiley   +1 more source

Mycoplasma bovis involved in pituitary abscess syndrome in a beef heifer concomitantly infected with haemoparasites

open access: yesVeterinary Record Case Reports, Volume 14, Issue 3, August 2026.
Abstract This case report describes pituitary abscess syndrome (PAS) in a 20‐month‐old Blonde d'Aquitaine heifer with cranial nerve deficits (V, VII, VIII, IX, X and XII) associated with facial hemiparesis, head tilt, ataxia and dysphagia, pneumonia and otitis interna.
Chloé Saada   +4 more
wiley   +1 more source

Design and Simulation of a Valveless Micro Pump

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2009
This paper reports on the design and simulation of a valveless micro pump which promises widely applicable in microfluidic applications. The structure of the pump comprises a PZT diaphragm and a fluidic network channel which can be easily fabricated by ...
Van Thanh DAU   +3 more
doaj   +1 more source

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