2012, Nephros, Inc. ( NEPH. OB ), a medical device company developing and marketing filtration products for therapeutic applications and advanced water purification solutions, announced the Company had received 510 ( k ) clearance from the Food and Drug Administration (" FDA ") to market its Hemodiafiltration (" HDF ") system for the treatment of chronic renal failure when used with UF controlled dialysis machines capable of producing ultrapure dialysate in accordance with current AAMI / ANSI / ISO standards in the United States.

Fresenius Medical Care has been a pioneer in advancing HDF therapy and has developed its 5008 therapy system and new Cordiax dialyzers specifically to facilitate this treatment option.

In Fresenius Medical Care ’ s European dialysis centers, over 50 % of the patients already receive HDF treatment.

The choice of filters to be used for the HDF depended on the ' throughput ' of each filter — the total proportion of light that it allows through — and the spectral coverage available.

Because the wavelengths at which the images were taken do not correspond to the wavelengths of red, green and blue light, the colours in the final image only give an approximate representation of the actual colours of the galaxies in the image ; the choice of filters for the HDF ( and the majority of Hubble images ) was primarily designed to maximize the scientific utility of the observations rather than to create colours corresponding to what the human eye would actually perceive.

The HDF data provided extremely rich material for cosmologists to analyse and as of late 2008, the associated scientific paper for the image has received over 800 citations.

HDF is a project to specify the processes and methodology used by all the HL7 committees for project initiation, requirements analysis, standard design, implementation, standard approval process, etc.

Image: Crimper HDF200. jpg | Crimptool for N, R-SMA, TNC connectors for RG174, RG58 and HDF / LMR200

Originally developed at the National Center for Supercomputing Applications, it is currently supported by the non-profit HDF Group, whose mission is to ensure continued development of HDF5 technologies, and the continued accessibility of data currently stored in HDF.

In keeping with this goal, the HDF format, libraries and associated tools are available under a liberal, BSD-like license for general use.

* HDFView A browser and editor for HDF files

Nephros's OLpur MD220 Hemodiafilter is a dialyzer designed expressly for HDF therapy that employs Nephros's proprietary Mid-Dilution Hemodiafiltration technology.

Fresenius HDF therapy, however, has not been approved by the FDA for use in the United States.

Nephros's OLpur MD220 Hemodiafilter is a dialyzer designed expressly for HDF therapy that employs Nephros's proprietary Mid-Dilution Hemodiafiltration technology.

In a study involving 782 patients in 10 dialysis clinics conducted in Turkey under the direction of Professor Ercan Ok at the EGE University in Izmir, patients treated with high-volume HDF displayed a better chance of survival compared to those treated with high-flux dialysis.

Eventually, the HDF will encompass all of the HL7 standard specifications, including any new standards resulting from analysis of electronic health record architectures and requirements.

" Nephros can now offer the only on-line HDF therapy available in the U. S .," said John C. Houghton, President & CEO of Nephros, Inc.

For large volume scientific datasets, such as satellite data and output of numerical climate, weather, or ocean models, specific binary serialization standards have been developed, e. g. HDF, netCDF and the older GRIB.

The voice signal can be routed to a POTS provider or left unused whilst the data signal is routed to the ISP DSLAM via the HDF ( see next entry ).

New data models can be added by the HDF developers or users.

One HDF file can hold a mix of related objects which can be accessed as a group or as individual objects.

Data on the server is often in HDF or NetCDF format, but can be in any format including a user-defined format.

Hardboard, also called high-density fiberboard ( HDF ), not to be confused with ' hardwood ', is a type of fiberboard, which is an engineered wood product.

* Skin-The front and back faces of the door are covered with HDF / MDF skins.

By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 800 citations by the end of 2008.

Radio snapshot observations with the VLA ruled out one of these fields because it contained a bright radio source, and the final decision between the other two was made on the basis of the availability of guide stars near the field: Hubble observations normally require a pair of nearby stars on which the telescope's Fine Guidance Sensors can lock during an exposure, but given the importance of the HDF observations, the working group required a second set of back-up guide stars.

#* Handover distribution frame ( HDF ): a distribution frame that connects the last mile provider with the service provider's DSLAM

HDF is self-describing, allowing an application to interpret the structure and contents of a file with no outside information.

HDF laminate consists of high density fiberboard topped by one or more layers of decorative paper and a transparent protective layer.

The Hubble Deep Field ( HDF ) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope.

Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South.

The HDF is at the centre of this image of one degree ( angle ) | degree of sky.

The HDF was located in Hubble's northern Continuous Viewing Zone, as shown by this diagram.

Scientists involved in the HDF observations pioneered a technique called ' drizzling ', in which the pointing of the telescope was varied minutely between sets of exposures.

The HDF images produced at each wavelength had final pixel sizes of 0. 03985 arcseconds.

In all, the HDF is thought to contain fewer than twenty galactic foreground stars ; by far the majority of objects in the field are distant galaxies.

There are about fifty blue point-like objects in the HDF.

However, more recent work has found that many white dwarfs become bluer as they age, lending support to the idea that the HDF might contain white dwarfs.

Details from the HDF illustrate the wide variety of galaxy shapes, sizes and colours found in the distant universe.

The Reference Information Model ( RIM ) and the HL7 Development Framework ( HDF ) are the basis of the HL7 Version 3 standards development process.

The v3 standard, as opposed to version 2, is based on a formal methodology ( the HDF ) and object-oriented principles.

The HL7 Version 3 Development Framework ( HDF ) is a continuously evolving process that seeks to develop specifications that facilitate interoperability between healthcare systems.