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Sustainable rosin acid ester as internal electron donors in Ziegler-Natta catalysts for synthesis of isotactic polypropylene with high melt flow rate
Bio-derived rosin acid esters internal electron donors Ziegler-Natta catalyst polypropylene polymerization
2023/12/11
In this contribution, novel bio-derived rosin acid ester compounds have been developed and used as internal electron donors to prepare MgCl2?supported titanium catalysts for propylene polymerization. ...
Characterization of Absorbent Flow Rate in Towel and Tissue
Absorbent Flow Rate Towel Tissue
2010/9/20
The quality of a paper towel is often judged based on how quickly it can wipe up a spill. However, the test methods currently available cannot repeatably measure significant differences in absorbent r...
On the Applicability of Theoretical Expressions for Flow Rate into Perforate Draintubes
Applicability of Theoretical Expressions Flow Rate Perforate Draintubes
2009/10/27
An assessment of the existing theoretical expressions of flow into perforated
draintubes has been made in regard to their applicability in the estimation of
flow rate into perforated drains under fi...
Flow-Rate Optimization of Dyeing Liquid in a Liquid Flow Dyeing Process for PET Knit Fabrics
Pump Liquid flow machine Inverter Nozzle Nozzle pressure
2009/4/15
The factors of dyeing technology for PET knit fabrics using liquid flow dyeing machine include the dye exhaustion property of PET fiber and liquid flow parameters in the dyeing machine. This article i...
Theoretical Investigation of Separator Units in Saw-gin Machines. I: Cotton Flow Rate Estimation
ginning process saw-gin separator units non-dimensional flow rate
2009/2/9
This theoretical study is intended to investigate the performance of a saw-gin ginning machine with special reference to separator units. For this purpose, a theoretical model of the separator units o...
The Effects of Mass Flow Rate in an Indirect Ultra-High Temperature Processing System
Mass flow rate UHT process system
2008/11/10
The effect of mass flow rate on product temperature and residence time were studied in a helically coiled, indirectly steam-heated, vertical flow, laboratory Ultra High Temperature (UHT) system equipp...
Normal Values of Peak Expiratory Flow Rate in Children from the Town of Babol, Iran
Anthropometrics Children Peak expiratory flow rate PEFR
2010/2/5
In the management and evaluation of asthma, simple instruments for measurements of peak expiratory flow rate (PEFR) are necessary. The aim of this study was to determine normal PEFR of the healthy chi...
Comparison Between Peak Expiratory Flow Rate and Forced Expiratory Volume in One Second in the Evaluation of Children Suspected to Have Asthma
Asthma Childhood Symptoms
2010/4/20
This study was conducted to evaluate whether forced expiratory volume in 1 second (FEV1) for the diagnosis of bronchial reactivity by means of the free-running exercise test and bronchodilator inhalat...