MyMedR

A simple and inexpensive external fixator

Noor MA

Injury, 1988 Nov;19(6):377-8.

A simple and inexpensive external fixator has been designed. It is constructed of galvanized iron pipe and mild steel bolts and nuts. It can easily be manufactured in a hospital workshop with a minimum of tools.

Simultaneous dislocations of the carpometacarpal and metacarpophalangeal joints of the thumb

Ibrahim S, Noor MA

Injury, 1993 May;24(5):343-4.

PMID: 8349349

Fulltext A report of the first 20 cases using a simple external fixator

Masbah O, Noor MA

Med J Malaysia, 1992 Jun;47(2):122-7.

PMID: 1494332

The results of treatment using a locally-designed external fixator in 20 patients are presented. Open fractures were the main indications for external fixation. Pin tract infection occurred in 8 patients. Only 2 patients had unstable fixation which required removal of the device. One third of patients developed malunion exceeding 15 degrees and two thirds had joint stiffness after conversion to plaster cast. This external fixator is adequate in the treatment of most open fractures of the tibia. However, improved techniques of pin insertion and cast application upon removal of the external fixator may help to reduce the incidence of pin tract infections and malunion.

Synchronous glomus tumors in a distal digit: a case report

Noor MA, Masbah O, Lumpur K

J Hand Surg Am, 1997 May;22(3):508-10.

PMID: 9195463

Glomus tumors occurring synchronously in the subungual region and the pulp of a fingertip are extremely uncommon. Awareness of this will lead to early diagnosis and treatment.

Effect of autohydrolysis and enzymatic treatment on oil palm (Elaeis guineensis Jacq.) frond fibres for xylose and xylooligosaccharides production

Sabiha-Hanim S, Noor MA, Rosma A

Bioresour Technol, 2011 Jan;102(2):1234-9.

PMID: 20797853 DOI: 10.1016/j.biortech.2010.08.017

Oil palm (Elaeis guineensis Jacq.) is one of the most important commercial crops for the production of palm oil, which generates 10.88 tons of oil palm fronds per hectare of plantation as a by-product. In this study, oil palm frond fibres were subjected to an autohydrolysis treatment using an autoclave, operated at 121 °C for 20-80 min, to facilitate the separation of hemicelluloses. The hemicellulose-rich solution (autohydrolysate) was subjected to further hydrolysis with 4-16 U of mixed Trichoderma viride endo-(1,4)-β-xylanases (EC 3.2.1.8) per 100 mg of autohydrolysate. Autoclaving of palm fronds at 121°C for 60 min (a severity factor of 2.40) recovered 75% of the solid residue, containing 57.9% cellulose and 18% Klason lignin, and an autohydrolysate containing 14.94% hemicellulose, with a fractionation efficiency of 49.20%. Subsequent enzymatic hydrolysis of the autohydrolysate with 8 U of endoxylanase at 40 °C for 24 h produced a solution containing 17.5% xylooligosaccharides and 25.6% xylose. The results clearly indicate the potential utilization of oil palm frond, an abundantly available lignocellulosic biomass for the production of xylose and xylooligosaccharides which can serve as functional food ingredients.

Ipsilateral fracture dislocation of the radial shaft head associated with elbow dislocation: case report

Shukur MH, Noor MA, Moses T

J Trauma, 1995 Jun;38(6):944-6.

PMID: 7602642

A severe form of an extremely unusual injury, ipsilateral fracture dislocation of the radial shaft head associated with elbow dislocation, is described. Radial shaft fracture was irreducible even after the radial head and the elbow were reduced. Open reduction and internal fixation are viable options.

Fractionation of oil palm frond hemicelluloses by water or alkaline impregnation and steam explosion

Sabiha-Hanim S, Mohd Noor MA, Rosma A

Carbohydr Polym, 2015 Jan 22;115:533-9.

PMID: 25439929 DOI: 10.1016/j.carbpol.2014.08.087

Steam explosion of oil palm frond has been carried out under different temperatures between 180 and 210°C for 4 min (severity of 2.96-3.84) after impregnation of the frond chips with water or KOH solution. The effects of impregnation and steam explosion conditions of oil palm fronds on the water soluble fraction and insoluble fraction were investigated. The maximum yield of hemicelluloses in water soluble fractions recovered was 23.49% and 25.33% for water and KOH impregnation, treated with steam explosion at temperature of 210°C (severity of 3.84) with a fractionation efficiency of 77.30% and 83.32%, respectively. Under this condition, the water insoluble fractions contained celluloses at 60.83% and 64.80% for water and KOH impregnation, respectively. The steam explosion temperature of 210°C for 4 min (logR(o) 3.84) was found to be the best condition in the extraction of hemicelluloses from OPF for both types of impregnation.

Stability evaluation of quality parameters for palm oil products at low temperature storage

Ramli NAS, Mohd Noor MA, Musa H, Ghazali R

J Sci Food Agric, 2018 Jul;98(9):3351-3362.

PMID: 29250790 DOI: 10.1002/jsfa.8839

BACKGROUND: Palm oil is one of the major oils and fats produced and traded worldwide. The value of palm oil products is mainly influenced by their quality. According to ISO 17025:2005, accredited laboratories require a quality control procedure with respect to monitoring the validity of tests for determination of quality parameters. This includes the regular use of internal quality control using secondary reference materials. Unfortunately, palm oil reference materials are not currently available. To establish internal quality control samples, the stability of quality parameters needs to be evaluated.

RESULTS: In the present study, the stability of quality parameters for palm oil products was examined over 10 months at low temperature storage (6 ± 2 °C). The palm oil products tested included crude palm oil (CPO); refined, bleached and deodorized (RBD) palm oil (RBDPO); RBD palm olein (RBDPOo); and RBD palm stearin (RBDPS). The quality parameters of the oils [i.e. moisture content, free fatty acid content (FFA), iodine value (IV), fatty acids composition (FAC) and slip melting point (SMP)] were determined prior to and throughout the storage period. The moisture, FFA, IV, FAC and SMP for palm oil products changed significantly (P 0.05). The stability study indicated that the quality of the palm oil products was stable within the specified limits throughout the storage period at low temperature.

CONCLUSION: The storage conditions preserved the quality of palm oil products throughout the storage period. These findings qualify the use of the palm oil products CPO, RBDPO, RBDPOo and RBDPS as control samples in the validation of test results. © 2017 Society of Chemical Industry.

Pesticide risk assessment: A study on inhalation and dermal exposure to 2,4-D and paraquat among Malaysian paddy farmers

Baharuddin MR, Sahid IB, Noor MA, Sulaiman N, Othman F

J Environ Sci Health B, 2011;46(7):600-7.

PMID: 21749249 DOI: 10.1080/03601234.2011.589309

A cross-section analytical study was conducted to evaluate the risk of pesticide exposure to those applying the Class II pesticides 2,4-D and paraquat in the paddy-growing areas of Kerian, Perak, Malaysia. It investigated the influence of weather on exposure as well as documented health problems commonly related to pesticide exposure. Potential inhalation and dermal exposure for 140 paddy farmers (handlers of pesticides) were assessed. Results showed that while temperature and humidity affected exposure, windspeed had the strongest impact on pesticide exposure via inhalation. However, the degree of exposure to both herbicides via inhalation was below the permissible exposure limits set by United States National Institute of Occupational Safety and Health (NIOSH). Dermal Exposure Assessment Method (DREAM) readings showed that dermal exposure with manual spraying ranged from moderate to high. With motorized sprayers, however, the level of dermal exposure ranged from low to moderate. Dermal exposure was significantly negatively correlated with the usage of protective clothing. Various types of deleterious health effects were detected among users of manual knapsack sprayers. Long-term spraying activities were positively correlated with increasing levels of the gamma-glutamyl transpeptidase (GGT) liver enzyme. The type of spraying equipment, usage of proper protective clothing and adherence to correct spraying practices were found to be the most important factors influencing the degree of pesticide exposure among those applying pesticides.

Measurement system analysis on the external standard using an azeotropic mixture of ethylene glycol and detailed uncertainties

Ahmad Hazmi AS, Abd Maurad Z, Mohd Noor MA, Nek Mat Din NSM, Idris Z

J Sep Sci, 2021 Apr;44(7):1471-1481.

PMID: 33522105 DOI: 10.1002/jssc.202000929

Ethylene glycol is a super commodity chemical and it has vital roles in various applications. Its co-production with other chemicals, such as ethylene carbonate and glycerol carbonate, has promised cheaper production cost. Its quantification presents a challenge as its contaminants, such as ethylene carbonate, produce a signal-reducing effect in flame ionized detector. The aim of this study is to evaluate external standard to quantify the composition of glycol mixture. Measurement system analysis was employed on the external standard method. Reliability of the external standard is statistically significant with low p-values, excellent capability indices, and high F-values. The external standard is found to have remarkable precision and trueness as both capability indices are mirroring each other. Furthermore, the capability analysis has a strong correlation with quality measurement. Based on capability indices, the limit of detection is recommended at S/N = 25 and the limit of quantification is recommended at S/N = 100 for a reliable measurement. A high degree of reliability is achieved coherently as almost all uncertainties of coefficients of variations are less than 5%. The established method was validated and successfully applied to glycol mixture at azeotropic distillation pilot plant.

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