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Computational Out-Of-Focus Imaging Increases The Space-Bandwidth Product In Lens-Based Coherent Microscopy

UCLA researchers in the Department of Electrical Engineering have developed a wide-field and high-resolution coherent imaging method that uses a stack of out-of-focus images to provide much better utilization of the space-bandwidth product (SBP) of an objective-lens.

Sparsity-Based Multi-Height Phase Recovery In Holographic Microscopy

UCLA researchers in the Department of Electrical Engineering have developed a sparsity-based phase reconstruction technique implemented in wavelet domain to achieve more than 3-fold reduction in the number of holographic measurements for coherent imaging of densely connected samples with minimal impact on the reconstructed image quality.

Single Fiber-Based Multimodal Biophotonic Imaging and Spectroscopy Platform

Researchers at the University of California, Davis have developed a highly flexible and reconfigurable optical imaging and spectroscopy platform.

A General Noise Suppression Scheme With A Reference Beam In Optical Heterodyne Spectroscopy

A methodology to suppress additive and convolved noise in optical heterodyne signals

Versatile Labeling of Protein N-Termini for Site-specific Bioconjugation

Improved subtiligase variants allow broad and versatile site-specific chemical modification or conjugation of proteins on their N-termini.

Fully Automated Synthesis Of 16B-[18F] Fluorodihydrotestosterone ([18F]-FDHT)

UCLA researchers in the Department of Molecular and Medical Pharmacology have developed a method for the fully automated synthesis of 16β- 18F-fluorodihydrotestosterone (18F-FDHT), a probe to monitor prostate cancer.

Time-Resolved Fluorescence Imaging Without Lifetime Fitting

UCLA investigators have developed a novel method to obtain time-resolved fluorescence imaging (TRFI) without the need to extract a fluorescence lifetime. Compared to conventional TRFI, this novel method is reliable, simple, time-saving and can dramatically improve biomedical applications of TRFI.

Holographic Opto-Fluidic Microscopy

UCLA researchers in the Department of Electrical Engineering have developed a system for holographic opto-fluidic microscopy.

Single Molecule Imaging and Sizing of DNA on a Cell Phone

UCLA researchers in the Department of Electrical Engineering have developed a light-weight and cost-effective fluorescence microscope installed on a cell phone.

Live Cell Detection by Near-Infrared Fluorogenic Tetrazine Uncaging Oligo Probes

There is significant interest in developing methods that visualize and detect RNA in live cells. Bioorthogonal template driven tetrazine ligations are quickly becoming a powerful route to visualizing nucleic acids in native cells, yet past work has been limited with respect to the diversity of fluorogens and existing tetrazine-reactive fluorogenic probes are quenched by through‐bond energy transfer (TBET) or Fӧrster resonance energy transfer (FRET) between the donor fluorophore and acceptor tetrazine.

Label Free Assessment Of Embryo Vitality

Researchers at UC Irvine developed an independent non-invasive method to distinguish between healthy and unhealthy embryos.

Near-Infrared Fluorescent Probe for Monitoring Mitochondrial Membrane Potential

Prof. Hui-wang Ai and colleagues at UCR have developed a new near-infrared fluorescent MMP probe that provides a number of advantages over current probes. Due to its improved chemistry the new probe, named NIMAP, delivers high sensitivity given its high fluorescence contrast and low background fluorescence. It has optimal emissions (above 600 nm) for mammalian in vivo and in vitro studies and improved accumulation within mitochondria which improves its quantitative analysis possibilities. NIMAP is also extremely photostable and can be utilized to monitor MMP for an extended period. Given these properties, NIMAP may be a powerful tool for studying MMP and mitochondrial function in various biological settings.

Imaging Platform Based On Nonlinear Optical Microscopy For Rapid Scanning Large Areas Of Tissue

The present invention discloses a nonlinear optical microscopy (NLOM) instrument for rapid imaging of wide areas and large volumes of biological tissues or other materials, ex vivo or in vivo, at sub-micron resolution. The instrument allows much larger field of view (FOV) at the same time improves the scan speed.

Method and System for Ultra High Dynamic Range Nucleic Acid Quantification

Researchers at UC Irvine developed a device and method that combines the high dynamic range and high accuracy of digital PCR (dPCR) with the real-time analysis of quantitative PCR (qPCR) to achieve a ultra-high dynamic range PCR over 10 to 12 orders of magnitude. The present method is accomplished by a highly integrated design that optimally packs, thermocycles, and images as many as 1 million reaction vessels.

Genetically Encoded Fluorescent Sensors for Probing the Action of G-Protein Coupled Receptors (GPCRs)

Researchers at the University of California, Davis have developed a genetically encoded fluorescent sensor toolbox for the probing of G-protein coupled receptors.

Method and apparatus for three-dimensional imaging of molecular bonds

Researchers at UCI have developed a 3D imaging technique with sub-nanometer resolution, which allows for imaging of individual bonds within molecules. Visualization and measurements taken at this resolution provide new and profound information about the fundamental aspects of atomic structures and their consequences on chemical activity.

Rapid And Selective Cycloaddition Reaction For Applications In Molecular Imaging

UCLA researchers in the Department of Molecular and Medical Pharmacology, and Department of Chemistry and Biochemistry have designed a new reaction with 18F-chemistry platform, allowing a highly selective, efficient and rapid approach to label biomolecules with a chemical reporter (i.e. radionuclide, fluorescent dye) for molecular imaging.

Apparatus And Method For Multiple-Pulse Impulsive Stimulated Raman Spectroscopy

UCLA researchers in the Department of Electrical Engineering have developed an apparatus and method for multiple-pulse impulsive stimulated Raman spectroscopy for molecule structure-level characterization.

Novel Contrast Enhancement for Detection of Amyloid Beta Peptides using MRI, EPR, PET, and ESRM

Researchers at the University of California, Davis have developed nitroxide-coupled amyloid agents to produce contrast enhancement for amyloid beta peptide (Abeta) detection using MRI, EPR, PET, and ESRM.

Multiple in vivo tissue chromophores

The field of the invention generally relates to methods and devices used in diffuse optical spectroscopy. More specifically, the field of the invention generally relates to broadband diffuse optical spectroscopy methods and devices which are able to dynamically monitor multiple in vivo tissue chromophores. A device and method utilizes a broadband diffuse optical spectroscopy (DOS) system to dynamically calculate the concentrations of multiple chromophores in vivo using a non-invasive probe. The device and method permit dynamic monitoring of multiple in vivo tissue chromophores non-invasively with sensitivities necessary for effective therapeutic monitoring. The device includes a probe containing first and second source optical fibers as well as first and second detector optical fibers. The probe is placed adjacent to a sample of interest and detects reflected light which is passed to a proximally located detector and spectrometer. The concentrations of multiple chromophores are determined in real time. In a preferred embodiment, the multiple tissue chromophores include at least two of methemoglobin (MetHb), deoxyhemoglobin (Hb-R), oxyhemoglobin (Hb-O2), water (H2O), and methylene blue (MB). The device and method can be used quantify and monitor methemoglobin formation in subjects suffering from methemoglobinemia.

SIMPLE AND RAPID METHOD FOR QUANTIFICATION OF HALOGINATED DISACCHARIDES, SUCH AS SUCRALOSE, IN AQUEOUS MEDIA

Sucralose has become widely used as an artificial sweetener due in large part that it has low caloric content and is 600 times sweeter than table sugar (sucrose). Due to its resistance to metabolic degradation, sucralose can also be used as a marker for noninvasively assessing gastrointestinal small intestine or colonic permeability. This urinary marker is traditionally analyzed by time consuming and expensive methods, such as high performance liquid chromatography coupled to mass spectrometry or evaporative light scatter as the detectors. We have developed an alternative methodology of using a chemical-fluorescent technique for rapid analysis of halogenated disaccharides, such as sucralose.

Simple And Low-Cost Pseudo-Halbach Magnets For NMR

Nuclear magnetic resonance (NMR) spectroscopy exploits the magnetic properties of certain atomic nuclei to determine the physical and chemical properties of the substances in which they are contained. It can provide detailed information about the structure, dynamics, reaction state, and chemical environment of molecules, where the magnetic field is used to polarize atomic nuclei prior to detection of their signals. In conventional NMR magnet design, the homogeneity of the field is a principal consideration and should be made as uniform as possible to obtain the most informative results and best data quality. Researchers from UC Berkeley have developed an assembly of magnetized prisms with an orientation pattern to generate the strongest available magnetic field.  The design is based on the priority of achieving the strongest available field over a given volume irrespective of the homogeneity.  The team has designed and made a compact 2 T magnet to fulfil these objectives.

Second Method For Nucleophilic Fluorination Of Aromatic Compounds With No-Carrier-Added [F-18] Fluoride Ion

UCLA researchers in the Department of Pharmacology have developed a novel aromatic nucleophilic fluorination reaction producing Fluorine-18 [F-18]-labeled aromatic compounds with extensive use in Positron Emission Tomography (PET).

Coordinative Alignment Of Molecules In Chiral Metal Organic Frameworks

Single-crystal x-ray diffraction is a powerful technique for the definitive identification of chemical structures.  Although most molecules and molecular complexes can be crystallized, often enthalpic and entropic factors introduce orientational disorder that prevent determination of a high-resolution structure.  Several strategies based on the inclusion of guests in a host framework that helps maintain molecular orientation have been used to overcome this challenge.  However, most of these methods rely primarily on weak interactions to induce crystalline order of the included molecules. Researchers at UC Berkeley have developed a strategy for crystallization of molecules within the pores of chiral metal-organic frameworks (MOFs) using coordinative bonding, which includes covalent and ionic bonds, and/or using chirality.  

A non-destructive method of quantifying mRNA in a single living cell

The detection of levels of messenger RNA (mRNA), the molecule used by DNA to convey information about protein production, is a very important method in molecular biology. Current detection strategies, such as Northern Blotting and RT-PCR, require destruction of the cell to extract such information. Researchers at the University of California, Irvine have developed a method to non-destructively assess mRNA levels in a single living cell.

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