نتایج جستجو برای: illuminator

تعداد نتایج: 241  

Journal: :Journal of synchrotron radiation 2012
M Feser M R Howells J Kirz J Rudati W Yun

In this paper the choice between bending magnets and insertion devices as sample illuminators for a hard X-ray full-field microscope is investigated. An optimized bending-magnet beamline design is presented. Its imaging speed is very competitive with the performance of similar microscopes installed currently at insertion-device beamlines. The fact that imaging X-ray microscopes can accept a lar...

Journal: :IEEE Access 2021

Vehicle detection systems play a significant role in intelligent transportation (ITSs). At present, vehicle is realized either by very costly inductive loops, video cameras that require good weather conditions and high computing resources, or recently developed magnetic sensors only obtain limited accuracy congested traffic conditions. To overcome these challenges, this paper develops passive r...

Journal: :Methods in Ecology and Evolution 2021

Abstract Camera traps are useful for monitoring wildlife populations, but may not always trigger when targeting small, nocturnal species. Motion‐detection techniques have advantages over time‐lapse and heat‐triggered traps, need to be deployed maximize signal‐to‐noise ratio. As part of a study flying squirrels ( Glaucomys ) in urban environments we developed motion‐detecting camera using raspbe...

Journal: :Thorax 1993
J Tamaoki A Chiyotani N Sakai K Takeyama K Konno

OBJECTIVE The effect of azelastine on airway mucociliary transport function was studied by measuring ciliary motility of human bronchial epithelium in vitro with a photoelectric method. METHOD Bronchial epithelial cells were obtained by fibreoptic bronchoscopy, mounted in a Rose chamber, and perfused with Krebs-Henseleit solution. The preparations were placed on a microscope stage equipped wi...

Journal: :The British journal of ophthalmology 1981
G A Peyman J L Green C P Carroll

Closed pars plana surgery was confined initially to the removal of opaque vitreous gel after vitreous haemorrhage. By modifying the cutting port of the vitrectomy instrument,' taut intravitreal bands and thick secondary membranes could be severed. Because of their proximity to the retina, preretinal membranes and tangential retinal traction bands were difficult to manage. Although the use of a ...

Journal: :Journal of ophthalmology 2016
Chung Hyun Lee Soo Geun Joe Sung Jae Yang

Aim. To evaluate the effectiveness of subconjunctivally injected viscoelastic material (VEM) for the self-sealing of leaking sclerotomy in transconjunctival sutureless vitrectomy (TSV). Methods. This was a prospective interventional series. Subconjunctival injection of VEM was performed in eyes showing leaking sclerotomy at the end of TSV in selected cases. This procedure was performed in 24 co...

Journal: :Molecular cancer therapeutics 2007
Babatunde O Oyajobi Steve Muñoz Rami Kakonen Paul J Williams Anjana Gupta Christi L Wideman Beryl Story Barry Grubbs Allison Armstrong William C Dougall I Ross Garrett Gregory R Mundy

Development of new therapies for myeloma has been hindered by the lack of suitable preclinical animal models of the disease in which widespread tumor foci in the skeleton can be detected reliably. Traditional means of detecting skeletal tumor infiltration such as histopathology are cumbersome and labor-intensive and do not allow temporal monitoring of tumor progression or regression in response...

2016
Feifei Yan Wenge Chang Xiangyang Li Qilei Zhang

In fixed-receiver bistatic synthetic aperture radar (SAR), the spaceborne SAR is used as an illuminator. The direct-path signal and bistatic SAR raw data are sampled by the fixed-receiver which is placed on the top of a building or a hill. As the direct-path signal has high signal-to-noise ratio (SNR) advantage and almost the same synchronization error terms, it is used as the reference signal ...

2005
Elena Holden Melvin Henriksen

Recent increases in the use of celland tissue-based experimental models in life sciences and drug discovery have fueled a demand for a combination of imaging and quantitative cytometry techniques. This demand has been met with the development of LSC, which has substantial advantages over other cellular analysis technologies, such as fluorescence image analysis (FIA) and flow cytometry (FC)1. FI...

Journal: :Journal of the College of Physicians and Surgeons--Pakistan : JCPSP 2016
Zafar Ul Islam Attiya Jawaid Shaikh Mubassar Fida

OBJECTIVE To determine and compare the mean dentoalveolar heights (mm) in different vertical and sagittal facial patterns. STUDY DESIGN Cross-sectional study. PLACE AND DURATION OF STUDY Orthodontics Clinic, The Aga Khan University Hospital, Karachi, from September to November 2013. METHODOLOGY Subjects, aged 15 - 20 years, having fully erupted first permanent molars and central incisors ...

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