scholarly journals Fur glowing under UV: a widespread consequence of porphyrin accumulation in mammals

2021 ◽  
Author(s):  
Séverine Toussaint ◽  
Jasper Ponstein ◽  
Mathieu Thoury ◽  
Rémi Métivier ◽  
Daniela Kalthoff ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Related Species ◽  
Multispectral Imaging ◽  
Physiological Condition ◽  
State Of The Art ◽  
Imaging Techniques ◽  
Interspecific Communication ◽  
Specific Function ◽  
Free Base ◽  
Nocturnal Mammals

Abstract Spectacular photoluminescence (PL) phenomena have been increasingly reported in various organisms from diverse ecosystems. However, the chemical basis of this PL remains poorly defined, and its potential ecological function is still blurry, especially in mammals. Here we used state-of-the-art spectroscopy and multispectral imaging techniques to document new cases of mammalian ultraviolet-induced PL (UV-PL) and to identify free-base porphyrins and natural derivatives as the organic compounds responsible for the reddish luminescence observed in the hairs and spines of distantly related species. We argue that pink to red UV-PL is predominantly observed in crepuscular and nocturnal mammals because porphyrins are photodegradable, and that this phenomenon might not have a specific function in intra- or interspecific communication but consists of a byproduct of a widespread physiological condition, overlooked in mammals.Co-first authors: Séverine Toussaint and Jasper Ponstein

State-of-the-Art in the Measurement of Volatile Organic Compounds Emitted from Building Products: Results of European Interlaboratory Comparison

Indoor Air ◽  
1999 ◽  
Vol 9 (2) ◽  
pp. 103-116 ◽  
Author(s):  
Maurizio Bortoli ◽  
Stylianos Kephalopoulos ◽  
Severine Kirchner ◽  
Herbert Schauenburg ◽  
Henk Vissers
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Interlaboratory Comparison ◽  
State Of The Art ◽  
Building Products ◽  
Volatile Organic

Recovery of forensic traces with use of state-of-the-art. imaging techniques – system for marking, tracing and maintaining chain of custody

2018 ◽  
Vol 299 ◽  
pp. 52-56
Author(s):  
Adam Frankowski ◽  
◽  
Artur Dębski ◽  
Keyword(s):  
State Of The Art ◽  
Imaging Techniques ◽  
Crime Scene ◽  
Rfid Tags ◽  
Chain Of Custody

The article describes the possibility of using modern techniques for crime scene imaging and a perspective of creating a system for denominating, tracing and maintaining the chain of custody of evidence. In particular, it presents the possibility of reproducing a crime scene based on recorded images and measurements performed with use of special markings. The Authors describe the chain of custody over the evidence and automation of procedures thanks to use of RFiD tags.

AOTF-based optical system of a microscope module for multispectral imaging techniques

2017 ◽  
Author(s):  
Olga V. Polschikova ◽  
Alexander Machikhin ◽  
Vladislav Batshev ◽  
Alina Ramazanova ◽  
Artyom Belov ◽  
...  
Keyword(s):  
Optical System ◽  
Multispectral Imaging ◽  
Imaging Techniques

Treatment of elbow instability: state of the art

2020 ◽  
pp. jisakos-2019-000316
Author(s):  
Alessandro Marinelli ◽  
Benjamin R Graves ◽  
Gregory Ian Bain ◽  
Luigi Pederzini
Keyword(s):  
Soft Tissue ◽  
State Of The Art ◽  
Current Knowledge ◽  
Imaging Techniques ◽  
Surgical Techniques ◽  
Surgical Instruments ◽  
Future Research ◽  
Elbow Instability ◽  
Soft Tissue Healing ◽  
Tissue Healing

The elbow is a congruent joint with a high degree of inherent stability, provided by osseous and soft-tissue constraints; however, when substantial lesions of these stabilising structures happen, instability of the elbow occurs. Significant improvements in surgical elbow instability diagnosis and treatment have been recently introduced both for acute and chronic cases. Specific stress tests, recently introduced in the clinical practice, and different imaging techniques, both static and dynamic, allow assessment of the elbow stabilisers and detection of the instability direction and mechanism even in subtle forms. Many surgical techniques have been standardised and surgical instruments and devices, specifically dedicated to elbow instability treatment, have been developed. Specific rehabilitation protocols have been designed to protect the healing of the elbow stabilisers while minimising elbow stiffness. However, despite the progress, surgical treatments can be challenging even for expert surgeons and the rate of persistent instability, post-traumatic arthritis, stiffness and pain can be still high especially in most demanding cases. The biology of the soft-tissue healing remains one of the most important aspects for future investigation. If future research will help to understand, correct or modulate the biological response of soft-tissue healing, our confidence in elbow instability management and the reproducibility of our treatment will tremendously improve. In this paper, the state of the art of the current knowledge of elbow instability is presented, specifically focusing on modern surgical techniques used to solve instability, with repair or reconstruction of the damaged elbow stabilisers.

scholarly journals Ultrastructural analysis of neuronal synapses using state-of-the-art nano-imaging techniques

2012 ◽  
Vol 28 (4) ◽  
pp. 321-332 ◽  
Author(s):  
Changlu Tao ◽  
Chenglong Xia ◽  
Xiaobing Chen ◽  
Z. Hong Zhou ◽  
Guoqiang Bi
Keyword(s):  
State Of The Art ◽  
Imaging Techniques ◽  
Ultrastructural Analysis ◽  
Neuronal Synapses ◽  
Nano Imaging
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