Lisa Drake, PhD’s Post

Updates from multiple members through recent peer reviewed publications together with many international co-authors - Thank you Lisa Drake, PhD for sharing this information. These observations are important as #MEPC is coming this months and number of discussions on #ballastwater are to take place. Global TestNet will participate to these discussions and will be available to share information on #testing and best practices as needed. #compliance #monitoring #enforcement #shipping #laboratory #analysis

WaterUniverse. A drop of glacier melt water has a green hue. First thought to be from the glass slide, this colour only appears in some samples like glacier melt and ice cores., not in others, such as fresh pond or river water. The conclusion therefore is that it is probably not from the glass. Further study of the particles might solve the mystery. Sch.1 60x ZEISS Microscopy darkfield. ZEISS Group #water #waterresearch #research #glaciers #ice cores #water quality #sciencecommunication

ICYMI researchers have designed a system for correlative #Fluorescence #Microscopy, optical tweezers, and magnetic tweezers for studying DNA topology – COMBI-Tweez. They demonstrate the controllable formation of higher order DNA structural motifs such as plectonemes, leveraging the ability of the system to precisely tune supercoiling density. This technology should be readily adapted to studying a range of filamentous biopolymers. The COMBI-Tweez system is built around the Nikon Ti-S inverted microscope. Click to view the article: https://lnkd.in/efAPFFFX

🔍 The Importance of Optical Filters in FISH Imaging In fluorescence in situ hybridization (FISH), filter selection plays an important role in obtaining clear and reliable images. The performance of your filters affects several key factors including: 1️⃣ Contrast: Higher signal-to-noise ratio for clearer images 2️⃣ Brightness: Brighter images for easier slide scoring 3️⃣ Color Separation: Allows clearer distinction between different probes 4️⃣ Registration: Precise alignment for accurate results Learn more about the impact optical filters have on your FISH imaging process: https://bit.ly/3XXyPc7

Taking big steps towards a common language: New SEMI standards for defect quantification in SiC using X-ray topography (XRT) SEMI recently published two new standards for TSD and BPD quantification, M91 and M93! SEMI M91 describes the procedure how to measure the Threading Screw Dislocation (TSD) density in SiC using XRT: https://lnkd.in/dKjya_-P SEMI M93 covers the determination of Basal Plane Dislocation (BPD) with XRT: https://lnkd.in/dcQDvzXa These SEMI standards reflect the breakthrough that high-resolution lab-scale X-ray topography (XRT) brought to the quantification of dislocations in SiC wafers. Besides strongly improving the reproducibility and comparability of the results, the XRT technique also meets the other key requirements of industrial application: being non-destructive and enabling a high wafer throughput. XRT measurements are therefore well on the way to becoming the new language of dislocation quantification in SiC. In the Center of Expertise for X-Ray Topography at Fraunhofer IISB, we are providing service-based measurements in full accordance with the new SEMI standards. If you have any questions in this regard, please contact our XRT experts Christian Reimann and Christian Kranert, or visit https://lnkd.in/e5fSaf_X.   #Semiconductor #PowerElectronics #SEMIStandards #WBG #WideBandgap #4HSiC #SiC #SiliconCarbide #Yield #XRT #Wafer #WaferInspection #WaferTopography #Metrology #DefectDetection #SiCValley #IntelligentPowerElectronics

“Repeated occurrence of metallic scales in butterflies. (A) Phylogenetic relationships between the eight species sampled in this study (Espeland et al., 2018; Wiemers et al., 2019). (B) Ultraviolet (UV-B) photographs reveal reflectance in the non-visible range. (C) Magnified views of the reflective patterns obtained by a digital microscope, corresponding to red square insets in panels (A,B). (D,E) Reflected-light microscopy of single silver or gold scales in air.” https://lnkd.in/d2J3ywdQ

This is a photo taken automatically under a fluorescence microscope.

How to attach an electronic eyepiece to the eyepiece tube and trinocular tube？💡 The electronic eyepiece converts the microscope's field of view into digital images. Once installed, it allows users to observe and record sample images and videos in real-time. 🖼 Using the BS-2030T biological microscope🔬 as the demonstration object. #biologicalmicroscope #microscope #microscopy #electroniceyepiece

The question of assessing the viability of organisms in #ballastwater continues: the USCG is soliciting comments as it develops a Programmatic Environmental Impact Statement on this topic. Fundamentally, the issue is about determining the viability of organisms ≥10 µm and <50 µm (nominally phytoplankton), e.g., using the most probable number (MPN) method. This has been a very long-running (!) discussion among researchers and regulators. A method must show that cells are “permanently incapable of reproduction following treatment”, and no methods have been submitted to USCG for consideration. Thus, the PEIS will analyze the impacts of a variety of methods that *may be* submitted in the future. Virtual public meetings will be held: September 5, at 12 p.m. EST September 10, 2024 at 4 p.m. EST September 11, 2024 at 7 p.m. EST Comments are due on/before October 7 https://lnkd.in/epcHYtqH #shipping #invasivespecies #environmentaltesting check out our ballast water testing: https://lnkd.in/e9-Ri4GH and peer-reviewed paper from >600 tests: https://lnkd.in/ey9YekUW Image: Taken by LD with an Olympus DP-10 digital camera attached to an Olympus BX50 compound microscope. Original magnification 400x; the chain is approximately 0.18 mm (180 µm) long (~5 cells could be laid across the head of a pin). Sample collected from the Elizabeth River, Virginia, USA. The colored background is possible using a set of prisms and “filters” arranged to achieve Nomarski Differential Interference Contrast (DIC). This optical phenomenon employs light, rather than biological stain, to distinguish different components of specimens. Images can thus be seen in striking color—an “optical staining”—and in exaggerated three-dimensional appearance.

Mshot Four-channel fluorescence light source MG-120 facilitates fluorescence observation with Leica microscopes. #Mshot #fluorescence #lightsource #microscopes