Results 91 to 100 of about 617,309 (289)

A parsimonious model for the proportional control valve [PDF]

open access: yes, 2001
A generic non-linear dynamic model of a direct-acting electrohydraulic proportional solenoid valve is presented. The valve consists of two subsystems-s-a spool assembly and one or two unidirectional proportional solenoids.
Gentle, CR, Elmer, KF
core  

Intestinal microbiota in healthy adults: temporal analysis reveals individual and common core and relation to intestinal symptoms [PDF]

open access: yes, 2011
BACKGROUND: While our knowledge of the intestinal microbiota during disease is accumulating, basic information of the microbiota in healthy subjects is still scarce.
Vos, W.M., de   +27 more
core   +1 more source

Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics

open access: yesAdvanced Science, EarlyView.
This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li   +8 more
wiley   +1 more source

Capacity Testing and Local Flow Analysis of a Geometrically Complex Trim Installed within a Commercial Control Valve [PDF]

open access: yes
Industrial control valves often handle flows with very high pressure drops (conditions often referred to as severe service). In order to cope with such pressure drops, geometrically complex valve trims with many stages of pressure drops, are designed to ...
Rakesh, Mishra   +3 more
core   +3 more sources

INTESTINAL OBSTRUCTION CAUSED BY LYPOHYPERPLASIA OF THE ILEOCECAL VALVE (IN SPÀNISH)

open access: yesRevista Ciencias Biomédicas, 2014
Introduction: The lypohyperplasia of the ileocecal valve (LHIV) is a rare disease defined as a diffuse and infiltrant proliferation of mature adipose tissue to submucose level.
Redondo-Bermúdez César   +4 more
doaj  

Mycotic superior mesenteric artery aneurysm with impending rupture due to infective endocarditis

open access: yesJournal of Vascular Surgery Cases and Innovative Techniques
A 49-year-old woman with tachycardia was referred to our institution. Transthoracic echocardiography revealed severe mitral regurgitation, and surgery was planned. While awaiting surgery, she developed a fever.
Satoshi Sakakibara, MD   +1 more
doaj   +1 more source

Machine Learning of Temperature‐Dependent Chemical Kinetics Using Parallel Droplet Microreactors

open access: yesAdvanced Science, EarlyView.
An integrated droplet microfluidics and machine learning framework enables high‐throughput characterization of temperature‐dependent reaction kinetics. Time‐resolved measurements from thousands of droplets train Neural ODE models that accurately predict nonlinear reaction dynamics across diverse thermal environments, bridging large‐scale ...
Mamoru Saita, Yutaka Hori
wiley   +1 more source

A Safety Valve for Emissions Trading [PDF]

open access: yes
This paper considers the optimal design of an emissions trading program that includes a safety valve tax that allows pollution sources to escape the emissions cap imposed by the aggregate supply of emissions permits.
John Stranlund
core  

Drought Stress Mediated Changes in Food Crops: Mechanisms and Remediation Strategies

open access: yesAdvanced Science, EarlyView.
This work presents a multi‐scale framework for flavonoid‐mediated drought tolerance in staple food crops, integrating ROS redox regulation, antioxidant defense, rhizosphere microbial interactions, and sustainable agronomic practices. This interdisciplinary model provides core insights to develop climate‐resilient cropping systems and enhance global ...
Xiaoyi Duan   +5 more
wiley   +1 more source

Atresia of ileocecal junction, ileocecal valve: Rare variants of bowel atresia

open access: yesJournal of Indian Association of Pediatric Surgeons, 2009
Atresia of ileocecal junction and isolated atresia of ileocecal valve are rare types of intestinal atresia with very few reports in literature. We report two such cases. Radiology showed dilated ileal segment and distal micro colon in both the cases.
Srivastava Punit   +6 more
doaj  

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