Factors Affecting Burning Rate of Hydroxy Terminated Polybutadiene Propellant

مقایسه خواص پیشرانه‌های جامد مرکب بر پایه HTPB و NHTPB/HTPB

Hydroxyl terminated polybutadiene (HTPB) is the most commonly used binder in composite solid propellants. However, due to its non-energetic character, in practice it is just a dead weight; Therefore, replacing HTPB with an energetic polymer is essential. In this research, nitrated hydroxyl terminated polybutadiene resin (NHTPB) with 12.2% nitration rate, in combination with HTPB resin was used ...

Factors Affecting Dissolution Rate

Solubility of drug plays a prime role in controlling its dissolution from dosage form. Aqueous solubility of drug is a major factor that determines its dissolution rate. Minimum aqueous solubility of 1% is required to avoid potential solubility limited absorption problems. Studies of 45 compound of different chemical classes and a wide range of solubilities revealed that initial dissolution rat...

Factors Affecting Conception Rate

An analysis of dairy herd records to determine the cause of low reproductive efficiency usually leads to the conclusion that problems are centered in one of the following areas: breeding policy (intentionally waiting too long after calving for first service), estrous detection efficiency (missed heats), or conception rate. The challenge is to identify the factors responsible for the problem. On...

the study of factors affecting of self-burning among women

background: the self-burning is one of the most painful methods of suicide. self-burning was performed influenced by various factors. this study is aimed to study self-burning event within women of javanrood and ravansar cities in kermanshah province and demographic characteristics of unsuccessful victims. methods: this study was a survey – descriptive. research area is javanrood and ravansar c...

Response of a Burning Propellant Surface to Erosive Transients