Planetary nebulae
What happens to hydrogen in HTI regions?
Nebula
Hti Hti Hypoxic Training Index CompTIA Higher Technological Institute (Egypt)
Hti-In_pagodas Hti-Abstract Hypoxic_Training_Index-Abstract CompTIA-HTI+ Higher_Technological_Institute_(Egypt)-Abstract
The "hti" can be said as the main distinctive feature of Burmese pagodas, as they are more prominent than their Sri Lankan counterparts, while the Laotian and Thai pagodas do not have any. The tip of the "hti", which is studded with precious stones, is called the "seinhpudaw" (; lit. "esteemed diamond bud"). "Hti" have been found on pagodas constructed by all four of the pagoda building ethnic groups of Myanmar: the Mon, the Bamar (Burmans), the Rakhine (Arakanese) and the Shan. The "hti" is considered the most important part of the pagoda. A special ceremony being held for the placing of the "hti" on the pagoda is called "hti tin pwe" (). The "hti" is placed on the top of a pagoda and hung with a multitude of bells. The "hti" of prominent pagodas are often made entirely of gold or silver. The bells are used to attract the attention of good spirits in Tāvatiṃsa and other abodes of the devas of Mount Meru. 
Hti (, ; ; Shan: ) is the name of the finial ornament that tops almost all pagodas in Myanmar (Burma). "Hti" is also a Burmese language word meaning umbrella. 
The Hypoxic Training index (HTi) provides an objective measure of the hypoxic stress delivered during the Intermittent Hypoxic Training (IHT) session, compared to simple recording the inhaled fraction of oxygen (FiO2). HTi provides a figure (index) of dosage received by the individual at the end of the session. Knowledge of HTi can therefore be used to alter the training regime for different individuals, compensating for individual variability, and can be used in scientific studies to ensure that subject exposure was correctly controlled. Tissue hypoxia develops only when arterial oxygen saturation (SpO2) drops to 90% or below. This is due to the oxyhaemoglobin dissociation curve. Saturations above 90% produce very little effect or decrease of arterial oxygen partial pressure (PaO2). In order to obtain consistent and comparable values of HTi for different individuals the following conditions should be stipulated:  The values of SpO2 above 89% are not considered in the calculation of HTi, as such saturation levels do not contribute to the treatment. SpO2 values below 75% count as 75%. HTi is calculated as an integral value of SpO2 readings made with 1 s sampling frequency and divided by 60 in order to produce a “per minute” value. During the treatment target SpO2 values are in the range of 75% - 89%.  
The HTI+ certification for home technology integrators was retired in 2007 and replaced by the CEA-CompTIA DHTI+ certification. 
Higher Technological Institute (HTI), is a technological institute in Cairo, Egypt. It was founded by Dr. Mostafa Kamel on 27 October 1988, according to the law of private non-profit national high institutes No. 52 for in 1970, the first academic year started on 21 September 1988. The HTI has three branches: Tenth of Ramdan City (Main Campus), 6th of October City Campus and Marsa Matruh City Campus. 