Search Results for "Brain Crystals On Xray"
Original Source: X-ray diffraction from intact tau aggregates in human brain tissue.
We describe an instrument to record x-ray diffraction patterns from diseased regions of human brain tissue by combining an in-line visible light fluorescence microscope with an x-ray diffraction microprobe. We use thiazine red fluorescence to specifically label and detect the filamentous tau protein pathology associated with Pick's disease, as several labs have done previously. We demonstrate that thiazine red-enhanced regions within the tissue show periodic structure in x-ray diffraction that is not observ...
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According to the American Brain Tumor Association, just over 24,000 patients will be diagnosed with a primary malignant brain tumour during 2012 in the US alone. Some 80% of primary malignant brain...
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Engineers achieve longlasting goal of stable nanocrystalline metals
Most metals are made of crystals. In many cases the material is made of tiny crystals packed closely together, rather than one large crystal. Indeed, for many purposes, making the crystals as small as...
New Egg Freezing Method Expands Reproductive Options
Until recently, the only method for freezing eggs caused ice crystals to form in the egg. These crystals sometimes destroyed the egg’s structure, making it impossible to create an embryo. A new meth...
Suspend the crystals, and they grow better
The idea is so simple you wonder why no one thought of it before. Crystals growing near the bottom of a beaker are subject to convection, but it is much quieter near the top of the beaker. In that ca...
Bendable crystals resolve properties of X-ray pulses
A frustrating flaw in a set of custom crystals for an instrument at SLAC National Accelerator Laboratory inspired a solution for an important scientific challenge: how to accurately measure the colors...
Antifreeze Proteins Block Growth of Ice Crystals by Binding Irreversibly
Antifreeze proteins bind irreversibly to ice crystals and prevent their growth even when no more protein is left in...
X-ray analysis on the nanogram to microgram scale using porous complexes
X-ray single-crystal diffraction (SCD) analysis has the intrinsic limitation that the target molecules must be obtained as single crystals. Here we report a protocol for SCD analysis that does not req...
Researchers develop printable lasers
Scientists have designed a process to print a type of organic laser on any surface using everyday inkjet technology. The process involves developing lasers based on chiral nematic liquid crystals. The...
Comet-like mineralogy of olivine crystals in an extrasolar proto-Kuiper belt
Some planetary systems harbour debris disks containing planetesimals such as asteroids and comets. Collisions between such bodies produce small dust particles, the spectral features of which reveal th...
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To understand how deuterium and fluorine substituents influence the supramolecular architecture of pyridine N-oxide crystals, the crystal structure of 3-fluoropyridine N-oxide (PNO-3F) was determined...
Simplifying the growth of hybrid single-crystals by using nanoparticle precursors: the case of AgI.
We report the synthesis of a series of AAg(m)I(n) single-crystals within 24 h, at room temperature, utilizing AgI nanoparticles (NPs) as the precursor. The AgI NPs impart high reactivity under mild co...
Pseudomorphic synthesis of mesoporous zeolite Y crystals.
A simple method for the conception of mesoporous zeolite Y crystals with a narrow intracrystalline mesopore size distribution is reported. It involves the pseudomorphic transformation of parent zeolit...
On the abundance of chiral crystals.
A common perception of many chemists is that non-biological chiral crystals comprise a small fraction of all crystals, as is the case of chiral non-biological molecules (∼10%). We show that the prop...
Cystinuria crystals: an image from a 14-year-old girl with cystinuria.
The image we present demonstrates the classic hexagonal crystals that are diagnostic of cysteine crystals in a 14-year-old girl with cystinuria. These crystals developed on her stent within a 2-week p...
