I too would like to see a utility to export to a 3d PDF, but Autodesk seem to just try and push DWF and don't care that 3d PDF is much more universal. I see that Tetra 4D is releasing a 3d pdf converter for Adobe Pro x this month, What I don't understand is the compatibility chart. Does anyone know what tessellation and BREP mean in terms of conversion to 3d PDF?
Jim Merry here from Tetra 4D. We at Tetra 4D are ex-Adobe folks who spun out with the 3D Converstion technology formerly available in Acrobat Pro Extended version 9 (APEX 9). APEX 9 cost about $899 and I believe you can still buy it but the 3D converters are stale; they were last updated in fall of 2009 and will not be updated any further. Tetra 4D's 3D PDF Converter is built on the Adobe APEX 9 core technology but it has been updated it and improved. We sell it as a plug-in for Acrobat X Pro. The combination of Acrobat X Pro + Tetra 4D's 3D Converter is in the same ballpark as APEX 9 cost.
Methylenetetrahydrofolate reductase (MTHFR) catalyzes the synthesis of 5-methyltetrahydrofolic acid (5-CH(3)-H(4) folic acid), the methyl donor for the formation of methionine from homocysteine. A common C677T transition in the MTHFR gene results in a variant with a lower specific activity and a greater sensitivity to heat than the normal enzyme, as measured in vitro. This study was undertaken to determine the capacity of homozygotes for the MTHFR C677T transition to convert 5-formyltetrahydrofolic acid (5-HCO-H(4) folic acid) to 5-CH(3)-H(4) folic acid, a process that requires the action of MTHFR. Six subjects homozygous for the C677T transition (T/T) and 6 subjects with wild-type MTHFR (C/C) were given a 5-mg oral dose of (6R:,S:)-5-HCO-H(4) folic acid. Plasma and urine were analyzed for 5-CH(3)-H(4) folic acid concentrations using affinity/HPLC coupled with fluorescence or UV detection. The mean areas under the curves created by the rise and fall of plasma 5-CH(3)-H(4) folic acid after the oral dose did not differ between the two genotypes, 424.5 +/- 140.3 (T/T) vs. 424.1+/- 202.4 h.nmol/L (C/C). There also was no significant difference in the mean cumulative 7-h urinary excretion of 5-CH(3)-H(4) folic acid between the T/T (2.5 +/- 1.4 micromol) and C/C (1.9 +/- 1.0 micromol) genotypes. Under the conditions employed, the conversion of oral 5-HCO-H(4) folic acid to 5-CH(3)-H(4) folic acid is not impaired in persons with the T/T MTHFR genotype. Possible reasons for these findings are discussed.
Tetra in Iceland did some research on this to display tetra radios on gps display, just like what I am planning. They quickly lost interest in finishing the solution though. The Tetra coverage isnt that great anyway in the highlands where we have valleys and canions. That is where I hope the MESH in Mestastic will be great.
This is a re-publish of a poorly done instructable that I posted a while back.
Transform an aquarium air pump to create a weak vacuum
This type of pump will only produce a weak vacuum but I use it for positioning electronic components and de-soldering applications.
You will need a tetra whisper Aquarium pump, a Philips screwdriver and about 5 minutes.
We propose a reflective terahertz metamaterial linear polarization converter, consisting of three layers: an array of metallic symmetrical anchor-shaped resonators, poly tetra fluoroethylene (PTFE) as a low loss dielectric layer, and a metal surface ground plane. The simulation results show that the proposed metamaterial can convert the linearly polarized waves into the cross-polarized waves with a polarization conversion ratio (PCR) of above 93% in the frequency range of 1.21-2.83 THz and the relative bandwidth is as high as 80.2%. The proposed metamaterial is valid for a wide range of incident angles, and the average polarization conversion ratio remains 93% even though the incident angle reaches 45. Additionally, we theoretically analyzed the conversion mechanism of achieving a high-efficiency linear polarization conversion in a wide frequency range by calculating the polarization angle and elliptical angle of the reflected terahertz waves. The experiment results using the terahertz time domain spectroscopy (THz-TDS) consist well with the simulation results. Our design will provide an important reference for the practical applications of the metamaterials in polarization manipulation.
In medicine and clinical psychology, diagnoses tend to be categorical (someone is depressed or not, someone has an anxiety disorder or not). Cooccurrence of both of these symptoms is called comorbidity. Diagnostic categories vary in their degree of comorbidity with other diagnostic categories. From the point of view of correlation, comorbidity is just a name applied to one cell in a four fold table. It is thus possible to analyze comorbidity rates by considering the probability of the separate diagnoses and the probability of the joint diagnosis. This gives the two by two table needed for a phi, Yule, or tetrachoric correlation.
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