P. Heng

P. Heng, T. Wong, W. S. Cheong, 2003, European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences.

The influence of microcrystalline cellulose grade on shape and shape distributions of pellets produced by extrusion-spheronization.

P. Heng, O. Koo, 2001, Chemical & pharmaceutical bulletin.

Ex‐vivo permeation study of chlorin e6‐polyvinylpyrrolidone complexes through the chick chorioallantoic membrane model

L. Chan, P. Heng, Romchat Chutoprapat, 2014, The Journal of pharmacy and pharmacology.

Process Analytical Technology: Application to Particle Sizing in Spray Drying

Paul W. S. Heng, L. Chan, P. Heng, 2008, AAPS PharmSciTech.

Influence of storage conditions and type of plasticizers on ethylcellulose and acrylate films formed from aqueous dispersions.

L. Chan, P. Heng, K. T. Ong, 2003, Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques.

Influence of Hydroxypropyl Methylcellulose on Metronidazole Crystallinity in Spray-Congealed Polyethylene Glycol Microparticles and Its Impact with Various Additives on Metronidazole Release

Ching Mien Oh, L. Chan, P. Heng, 2015, AAPS PharmSciTech.

Comparative study of non-destructive methods to quantify thickness of tablet coatings.

L. Chan, P. Heng, A. Karande, 2010, International journal of pharmaceutics.

Lidocaine loaded gelatin/gelatinized tapioca starch films for buccal delivery and the irritancy evaluation using chick chorioallantoic membrane

P. Boonme, P. Heng, Jirapornchai Suksaeree, 2019, Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society.

Plasticizers and their effects on microencapsulation process by spray-drying in an aqueous system.

P. Heng, L. S. Wan, C. G. Chia, 1992, Journal of microencapsulation.

Citric acid as a plasticizer for spray-dried microcapsules.

P. Heng, L. S. Wan, C. G. Chia, 1993, Journal of microencapsulation.

Design of a Device for Simultaneous Particle Size and Electrostatic Charge Measurement of Inhalation Drugs

Paul W. S. Heng, Reginald B. H. Tan, R. Tan, 2008, Pharmaceutical Research.

An Evaluation of Content Uniformity of Tablets Prepared by Quasi-Continuous Drug Coating Using near Infrared and Raman Spectroscopy

Lai Wah Chan, Paul Wan Sia Heng, L. Chan, 2014 .

The CAM‐LDPI method: a novel platform for the assessment of drug absorption

L. Chan, P. Heng, S. L. M. Tay, 2012, The Journal of pharmacy and pharmacology.

Evaluation of sodium alginate as drug release modifier in matrix tablets.

Lai Wah Chan, Celine Valeria Liew, Paul Wan Sia Heng, 2006, International journal of pharmaceutics.

Release characteristics of pectin microspheres prepared by an emulsification technique

L. Chan, P. Heng, T. Wong, 2002, Journal of microencapsulation.

Drug encapsulation in alginate microspheres by emulsification.

L. Chan, P. Heng, L. S. Wan, 1992, Journal of microencapsulation.

Use of swirling airflow to enhance coating performance of bottom spray fluid bed coaters.

L. Chan, P. Heng, E. S. Tang, 2006, International journal of pharmaceutics.

Comparative study of the fluid dynamics of bottom spray fluid bed coaters

L. Chan, P. Heng, E. S. Tang, 2006, AAPS PharmSciTech.

Classification of Annular Bed Flow Patterns and Investigation on Their Influence on the Bottom Spray Fluid Bed Coating Process

C. Liew, P. Heng, Li Kun Wang, 2010, Pharmaceutical Research.

Cross-linker and non-gelling Na+ effects on multi-functional alginate dressings

L. Chan, P. Heng, C. Goh, 2012 .

A Study on the Impact of Hydroxypropyl Methylcellulose on the Viscosity of PEG Melt Suspensions Using Surface Plots and Principal Component Analysis

Ching Mien Oh, L. Chan, P. Heng, 2014, AAPS PharmSciTech.

Interactive Mixture as a Rapid Drug Delivery System

L. Chan, P. Heng, T. Wong, 2008, Drug development and industrial pharmacy.

Effects of N-Methyl Pyrrolidone on the Uptake of Hypericin in Human Bladder Carcinoma and Co-staining with DAPI Investigated by Confocal Microscopy

K. Soo, M. Olivo, K. Kho, 2007, Technology in cancer research & treatment.

Impact of Die Wall Material on the Mechanical Properties of Paracetamol Tablets.

C. Liew, L. Chan, P. Heng, 2019, International journal of pharmaceutics.

Determination of solid state characteristics of spray-congealed Ibuprofen solid lipid microparticles and their impact on sustaining drug release.

L. Chan, P. Heng, Priscilla Chui Hong Wong, 2015, Molecular pharmaceutics.

Effect of Lipid Additives and Drug on the Rheological Properties of Molten Paraffin Wax, Degree of Surface Drug Coating, and Drug Release in Spray-Congealed Microparticles

L. Chan, P. Heng, Hongyi Ouyang, 2018, Pharmaceutics.

Application of multidimensional scaling to preformulation sciences: a discriminatory tool to group microcrystalline celluloses.

C. Liew, P. Heng, J. L. Soh, 2005, Chemical & pharmaceutical bulletin.

Evaluation of coat uniformity and taste-masking efficiency of irregular-shaped drug particles coated in a modified tangential spray fluidized bed processor

C. Liew, P. Heng, Min Xu, 2015, Expert opinion on drug delivery.

Drying efficiency and particle movement in coating--impact on particle agglomeration and yield.

C. Liew, L. Chan, P. Heng, 2008, International journal of pharmaceutics.

Influence of hydrophile-lipophile balance on alginate microspheres

L. Chan, P. Heng, L. S. Wan, 1993 .

The influence of liquid spray rate and atomizing pressure on the size of spray droplets and spheroids

C. Liew, P. Heng, L. S. Wan, 1995 .

Air-dictated bottom spray process: impact of fluid dynamics on granule growth and morphology

C. Liew, P. Heng, Dawn Z L Er, 2009, Drug development and industrial pharmacy.

Development and optimization of solid dispersion containing pellets of itraconazole prepared by high shear pelletization.

Siling Wang, P. Heng, Chao Wang, 2007, International journal of pharmaceutics.

Impact of Amylose-Amylopectin Ratio of Starches on the Mechanical Strength and Stability of Acetylsalicylic Acid Tablets

C. Liew, P. Heng, N. Verónica, 2022, AAPS PharmSciTech.

An Evaluation of Exogenous Application of Protoporphyrin IX and its Dimethyl Ester as a Photodynamic Diagnostic Agent in Poorly Differentiated Human Nasopharyngeal Carcinoma ¶

K. Soo, K. Yee, P. Heng, 2004, Photochemistry and photobiology.

An Evaluation of Exogenous Application of Protoporphyrin IX and its Dimethyl Ester as a Photodynamic Diagnostic Agent in Poorly Differentiated Human Nasopharyngeal Carcinoma¶

K. Soo, M. Olivo, K. Yee, 2004 .

Physico-chemical aspects of lactose for inhalation.

L. Chan, P. Heng, H. Steckel, 2012, Advanced drug delivery reviews.

Insights into the functionality of pelletization aid in pelletization by extrusion-spheronization

C. Liew, P. Heng, Srimanta Sarkar, 2013, Pharmaceutical development and technology.

Feasibility of Eliminating Premixing for the Production of Pellets in a Rotary Processor

C. Liew, P. Heng, J. L. Soh, 2006, Pharmaceutical development and technology.

Torque rheological parameters to predict pellet quality in extrusion-spheronization.

C. Liew, P. Heng, J. L. Soh, 2006, International journal of pharmaceutics.

Investigation of Electrostatic Behavior of a Lactose Carrier for Dry Powder Inhalers

R. Tan, Kewu Zhu, P. Heng, 2008, Pharmaceutical Research.

Development of Re-Usable Yeast-Gellan Gum Micro-Bioreactors for Potential Application in Continuous Fermentation to Produce Bio-Ethanol

L. Chan, P. Heng, S. Tan, 2011, Pharmaceutics.

Stability of a novel corticosteroid nasal irrigation solution: betamethasone 17‐valerate added to extemporaneously prepared nasal irrigation solutions

W. C. Lim, L. Chan, P. Heng, 2017, International forum of allergy & rhinology.

Liquid phase coating to produce controlled-release alginate microspheres

P. Heng, Lai Wah Chan, Xiaohua Liu, 2005, Journal of microencapsulation.

Mechanistic Study on Hydration and Drug Release Behavior of Sodium Alginate Compacts

C. Liew, L. Chan, P. Heng, 2007, Drug development and industrial pharmacy.

Preparation of co-spray dried cushioning agent containing stearic acid for protecting pellet coatings when compressed

P. Heng, Xiao Li, De Sheng Xu, 2016, Drug development and industrial pharmacy.

IL4 - Compaction of coated multi-particulates

P. Heng, 2016 .

The Role of Moisture and Gap Air Pressure in the Formation of Spherical Granules by Rotary Processing

C. Liew, P. Heng, L. S. Wan, 1994 .

The reality of in-line tablet coating

L. Chan, P. Heng, C. Cahyadi, 2013, Pharmaceutical development and technology.

A Mechanistic Understanding of Compression Damage to the Dissolubility of Coated Pellets in Tablets.

P. Heng, H. M. Tan, Tze Ning Hiew, 2019, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Aging and microwave effects on alginate/chitosan matrices.

L. Chan, P. Heng, T. Wong, 2005, Journal of controlled release : official journal of the Controlled Release Society.

The butterfly effect: a physical phenomenon of hypromellose matrices during dissolution and the factors affecting its occurrence.

P. Colombo, L. Chan, P. Heng, 2011, International journal of pharmaceutics.

Effect of hydration on the structure of non aqueous ethyl cellulose/propylene glycol dicaprylate gels.

S. Kasapis, P. Heng, L. Bruno, 2012, International journal of biological macromolecules.

Evaluation of Permeability and Mechanical Properties of Composite Polyvinyl Alcohol Films.

L. Chan, P. Heng, J. Hao, 1999 .

Production of alginate microspheres by internal gelation using an emulsification method.

L. Chan, P. Heng, H. Lee, 2002, International journal of pharmaceutics.

Spectroscopic characterization and photobleaching kinetics of hypericin-N-methyl pyrrolidone formulations.

K. Soo, M. Olivo, P. Heng, 2006, Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology.

Alginate/starch composites as wall material to achieve microencapsulation with high oil loading

L. Chan, P. Heng, L. H. Tan, 2009, Journal of microencapsulation.

Study of interaction of hypericin and its pharmaceutical preparation by fluorescence techniques.

M. Olivo, T. Wohland, P. Heng, 2009, Journal of biomedical optics.

Effect of polyvinylpyrrolidone on the interaction of chlorin e6 with plasma proteins and its subcellular localization.

M. Olivo, P. Heng, W. Chin, 2010, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Relationship Between Swelling and Drug Release in a Hydrophilic Matrix

P. Heng, L. S. Wan, L. F. Wong, 1993 .

Cross-linking mechanisms of calcium and zinc in production of alginate microspheres.

L. Chan, P. Heng, Y. Jin, 2002, International journal of pharmaceutics.

Importance of Small Pores in Microcrystalline Cellulose for Controlling Water Distribution during Extrusion–Spheronization

C. Liew, P. Heng, J. L. Soh, 2008, AAPS PharmSciTech.

Analysis of growth of granules in a fluidized bed granulator

P. Heng, L. S. Wan, G. Muhuri, 1992 .

Evaluation of the Physicochemical Properties and Compaction Behavior of Melt Granules Produced in Microwave-Induced and Conventional Melt Granulation in a Single Pot High Shear Processor

C. Liew, P. Heng, Z. H. Loh, 2011, AAPS PharmSciTech.

Development of nanodispersion-based sildenafil metered-dose inhalers stabilized by poloxamer 188: a potential candidate for the treatment of pulmonary arterial hypertension

P. Heng, T. Srichana, Charisopon Chunhachaichana, 2019, Pharmaceutical development and technology.

Impact of a Non-meltable Additive on Melt Agglomeration with a Hydrophobic Meltable Binder in High-Shear Mixer

P. Heng, T. Wong, W. S. Cheong, 2007, Pharmaceutical development and technology.

Functionality of Cross-Linked Polyvinylpyrrolidone as a Spheronization Aid: A Promising Alternative to Microcrystalline Cellulose

C. Liew, P. Heng, J. L. Soh, 2005, Pharmaceutical Research.

Pre-formulation studies on moisture absorption in microcrystalline cellulose using differential thermo-gravimetric analysis.

C. Liew, P. Heng, J. L. Soh, 2004, Chemical & pharmaceutical bulletin.

Microcrystalline cellulose: An overview

C. Liew, P. Heng, J. L. Soh, 2017 .

Effect of addition of water on the rheological and mechanical properties of microcrystalline celluloses

P. Heng, J. Staniforth, A. Baichwal, 1988 .

A Study on In-Line Tablet Coating—the Influence of Compaction and Coating on Tablet Dimensional Changes

L. Chan, P. Heng, C. Cahyadi, 2012, AAPS PharmSciTech.

Ensuring Product Stability - Choosing the Right Excipients.

C. Liew, P. Heng, N. Verónica, 2022, Journal of pharmaceutical sciences.

Development and evaluation of optimized sucrose ester stabilized oleanolic acid nanosuspensions prepared by wet ball milling with design of experiments.

P. Heng, K. Ng, Wenji Li, 2014, Biological & pharmaceutical bulletin.

Characterization of spreadability of nonaqueous ethylcellulose gel matrices using dynamic contact angle.

L. Chan, P. Heng, K. Chow, 2008, Journal of pharmaceutical sciences.

Relationship between aggregation of HPMC coated spheroids and tackiness/viscosity/additives of the coating formulations

P. Heng, L. S. Wan, Y. Tan, 1996 .

A Study of Moisture Sorption and Dielectric Processes of Starch and Sodium Starch Glycolate

Y. Feldman, I. Popov, P. Heng, 2017, Pharmaceutical Research.

Improving Dry Powder Inhaler Performance by Surface Roughening of Lactose Carrier Particles

L. Chan, P. Heng, B. Tan, 2016, Pharmaceutical Research.

Quantification of the surface morphologies of lactose carriers and their effect on the in vitro deposition of salbutamol sulphate.

L. Chan, P. Heng, L. T. Lim, 2000, Chemical & pharmaceutical bulletin.

Effect of moisture sorption on the performance of crospovidone.

P. Heng, Z. H. Loh, P. Desai, 2016, International journal of pharmaceutics.

Improvement in dissolution rate and photodynamic efficacy of chlorin e6 by sucrose esters as drug carrier in nanosuspension formulation: optimisation and in vitro characterisation

L. Chan, P. Heng, Shubhajit Paul, 2018, The Journal of pharmacy and pharmacology.

Analysis of the influence of relative humidity on the moisture sorption of particles and the aerosolization process in a dry powder inhaler

R. Tan, Kewu Zhu, P. Heng, 2008 .

Effect of cellulose derivatives on alginate microspheres prepared by emulsification.

L. Chan, P. Heng, L. S. Wan, 1997, Journal of microencapsulation.

Surfactant effects on alginate microspheres

L. Chan, P. Heng, L. S. Wan, 1994 .

Hot melt extrusion of ion‐exchange resin for taste masking

P. Heng, R. Gokhale, David Cheng Thiam Tan, 2018, International journal of pharmaceutics.

Investigation of the milling capabilities of the F10 Fine Grind mill using Box-Behnken designs.

L. Chan, P. Heng, B. Tan, 2015, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Assessment of disintegration of rapidly disintegrating tablets by a visiometric liquid jet-mediated disintegration apparatus.

C. Liew, P. Heng, P. Desai, 2013, International journal of pharmaceutics.

Interactions of antimicrobial compounds with cross-linking agents of alginate dressings.

L. Chan, P. Heng, C. Goh, 2008, The Journal of antimicrobial chemotherapy.

Relationship Between Polymer Viscosity and Drug Release from a Matrix System

P. Heng, L. F. Wong, Lucy Wan Sai Cheong, 1992, Pharmaceutical Research.

A comparative study between conventional pan coater and quasi-continuous small batch coater on the stability of tablets containing acetylsalicylic acid.

L. Chan, P. Heng, C. Cahyadi, 2015, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Alginate-based matrix tablets for drug delivery

C. Liew, P. Heng, N. Verónica, 2022, Expert opinion on drug delivery.

MUPS Tableting—Comparison between Crospovidone and Microcrystalline Cellulose Core Pellets

L. Chan, P. Heng, Daniel Robin Thio, 2022, Pharmaceutics.

Tablet Disintegratability: Sensitivity of Superdisintegrants to Temperature and Compaction Pressure

L. Chan, P. Heng, Audrey Yi Zheng, 2022, Pharmaceutics.

Functionality of Disintegrants and Their Mixtures in Enabling Fast Disintegration of Tablets by a Quality by Design Approach

C. Liew, P. Heng, P. Desai, 2014, AAPS PharmSciTech.

Mechanism of pellet coat rupture and its effect on drug release.

L. Chan, P. Heng, P W Heng, 1999, Chemical & pharmaceutical bulletin.

Microencapsulation of oils using sodium alginate.

L. Chan, P. Heng, L. T. Lim, 2000, Journal of microencapsulation.

Formulation, Biological and Pharmacokinetic Studies of Sucrose Ester-Stabilized Nanosuspensions of Oleanolic Acid

P. Heng, K. Ng, Surajit Das, 2011, Pharmaceutical Research.

Optimization in Solvent Selection for Chlorin e6 in Photodynamic Therapy

L. Chan, P. Heng, Shubhajit Paul, 2013, Journal of Fluorescence.

In Vitro Dissolution of Pharmaceutical Solids

P. Heng, J. L. Soh, J. Soh, 2011 .

Influence of Hydroxypropyl Methylcellulose on Metronidazole Crystallinity in Spray-Congealed Polyethylene Glycol Microparticles and Its Impact with Various Additives on Metronidazole Release

Ching Mien Oh, L. Chan, P. Heng, 2015, AAPS PharmSciTech.

Alginates as a useful natural polymer for microencapsulation and therapeutic applications

L. Chan, P. Heng, C. Goh, 2012 .

Formulation of Hydrophilic Non-Aqueous Gel: Drug Stability in Different Solvents and Rheological Behavior of Gel Matrices

L. Chan, P. Heng, K. Chow, 2007, Pharmaceutical Research.

Herb-Drug Interactions

Wei Duan, Paul Wan Sia Heng, Sui Yung Chan, 2012, Drugs.

Functionality of Disintegrants and Their Mixtures in Enabling Fast Disintegration of Tablets by a Quality by Design Approach

Parind Mahendrakumar Desai, Celine Valeria Liew, Paul Wan Sia Heng, 2014, AAPS PharmSciTech.

The effect of hydroxypropylmethylcellulose on water penetration into a matrix system

P. Heng, L. S. Wan, L. F. Wong, 1991 .

Skin permeation of physostigmine from fatty acids-based formulations: evaluating the choice of solvent.

Yi Yan Yang, P. Heng, Mei Yin Wang, 2005, International journal of pharmaceutics.

Temperature and time effects on the structural properties of a non-aqueous ethyl cellulose topical drug delivery system

S. Kasapis, L. Leong, P. Heng, 2011 .

Development of Novel Nonaqueous Ethylcellulose Gel Matrices: Rheological and Mechanical Characterization

L. Chan, P. Heng, K. Chow, 2005, Pharmaceutical Research.

Herb-drug interactions: a literature review.

Wei Duan, Paul Wan Sia Heng, Sui Yung Chan, 2005, Drugs.

Elucidation of Monomerization Effect of PVP on Chlorin e6 Aggregates by Spectroscopic, Chemometric, Thermodynamic and Molecular Simulation Studies

L. Chan, P. Heng, Shubhajit Paul, 2013, Journal of Fluorescence.

Transport of hypericin across chick chorioallantoic membrane and photodynamic therapy vasculature assessment.

K. Soo, M. Olivo, P. Heng, 2005, Biological & pharmaceutical bulletin.

A Study on The Formulation of Plant Matrix Tablets From Coarse Botanical Materials Using Cinnamon Bark and Areca Nut as The Model Botanical Materials

C. Liew, P. Heng, S. M. Ooi, 2020 .

Buccal Delivery Systems

P. Heng, Jinsong Hao, 2003, Drug development and industrial pharmacy.

Drug release properties of pectinate microspheres prepared by emulsification method.

L. Chan, P. Heng, T. Wong, 2002, International journal of pharmaceutics.

Matrix swelling: A simple model describing extent of swelling of HPMC matrices

P. Heng, L. S. Wan, L. F. Wong, 1995 .

Anti-tack action of polyvinylpyrrolidone on hydroxypropylmethylcellulose solution.

P. York, L. Chan, P. Heng, 2003, Chemical & pharmaceutical bulletin.

Modifying matrix micro-environmental pH to achieve sustained drug release from highly laminating alginate matrices.

C. Liew, L. Chan, P. Heng, 2008, European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences.

Microencapsulation of microbial cells

Lai Wah Chan, Celine Valeria Liew, Paul Wan Sia Heng, 2013 .

Evaluation of the coat quality of sustained release pellets by individual pellet dissolution methodology.

C. Liew, P. Heng, Min Xu, 2015, International journal of pharmaceutics.

Effects of aldehydes and methods of cross-linking on properties of calcium alginate microspheres prepared by emulsification.

L. Chan, P. Heng, 2002, Biomaterials.

Evaluating proteins release from, and their interactions with, thermosensitive poly (N-isopropylacrylamide) hydrogels.

Yi-Yan Yang, P. Heng, Shao-qiong Liu, 2005, Journal of controlled release : official journal of the Controlled Release Society.

SPRAY DRYING AS A PROCESS FOR MICROENCAPSULATION AND THE EFFECT OF DIFFERENT COATING POLYMERS

Paul Wan Sia Heng, P. Heng, L. S. Wan, 1992 .

Cushioning Pellets based on Microcrystalline Cellulose - Crospovidone Blends for MUPS Tableting.

L. Chan, P. Heng, Ramy N. Elsergany, 2020, International journal of pharmaceutics.

Understanding the release performance of pellets with hydrophobic inclusions in sustained‐release coating

P. Heng, Tze Ning Hiew, Desiree Tan, 2019, International journal of pharmaceutics.

Optimization of supercritical fluid extraction and pressurized liquid extraction of active principles from Magnolia officinalis using the Taguchi design

Lai Wah Chan, Paul Wan Sia Heng, L. Chan, 2010 .

Drug Substance and Excipient Characterization

Lai Wah Chan, Xiang Kou, Paul Wan Sia Heng, 2021 .

Influence of production variables on the sphericity of melt pellets.

L. Chan, P. Heng, T. Wong, 2000, Chemical and pharmaceutical bulletin.

Effects of Drug Particle Size and Lipid Additives on Drug Release from Paraffin Wax Formulations Prepared by Spray Congealing Technique

L. Chan, P. Heng, Hongyi Ouyang, 2019, AAPS PharmSciTech.

Mixed polymer coating for modified release from coated spheroids.

P. Heng, Y. T. Tan, L. Wan, 1999, Pharmaceutical development and technology.

A pellet sphericity measure system based on dual active contour models

P. Heng, Daming Shi, Fei Chen, 2003, Proceedings of the 2003 International Conference on Machine Learning and Cybernetics (IEEE Cat. No.03EX693).

pH‐dependent complexation of hydroxypropyl‐beta‐cyclodextrin with chlorin e6: effect on solubility and aggregation in relation to photodynamic efficacy

L. Chan, P. Heng, Shubhajit Paul, 2016, The Journal of pharmacy and pharmacology.

Review of Disintegrants and the Disintegration Phenomena.

Parind Mahendrakumar Desai, Celine Valeria Liew, Paul Wan Sia Heng, 2016, Journal of pharmaceutical sciences.

Microwave drying of granules containing a moisture-sensitive drug: a promising alternative to fluid bed and hot air oven drying.

P. Heng, S. N. Chee, J. Karlsen, 2005, Chemical & pharmaceutical bulletin.

Effect of Surfactants on the Melt Viscosity and Extent of Drug Embedment of Paraffin Wax Blends in Spray Congealing

L. Chan, P. Heng, Hongyi Ouyang, 2020, Journal of Pharmaceutical Innovation.

Mechanisms of external and internal gelation and their impact on the functions of alginate as a coat and delivery system

Lai Wah Chan, Paul Wan Sia Heng, L. Chan, 2006 .

Probing the impact of HPMC viscosity grade and proportion on the physical properties of co-freeze-dried mannitol-HPMC tableting excipients using multivariate analysis methods.

L. Chan, P. Heng, Carin Ru Shan Siow, 2019, International journal of pharmaceutics.

Understanding die fill variation during mini-tablet production.

C. Liew, P. Heng, Hui Ping Goh, 2017, International journal of pharmaceutics.

Encapsulation of volatiles by homogenized partially-cross linked alginates.

P. Heng, S. M. Ooi, P. Desai, 2015, International journal of pharmaceutics.

Impact of cross-linker on alginate matrix integrity and drug release.

C. Liew, L. Chan, P. Heng, 2008, International journal of pharmaceutics.

A study on the plasticization of sustained release coatings for their ability to withstand the damaging effects of compaction on coated pellets

P. Heng, Sivaram Nallamolu, Chan Pui Sheon, 2016 .

Novel Film Modifiers to Alter the Physical Properties of Composite Ethylcellulose Films

L. Chan, P. Heng, K. T. Ong, 2005, Pharmaceutical Research.

Technique of measuring rapid water penetration rate into tablets.

P. Heng, L. Wan, 1987, Chemical & pharmaceutical bulletin.

Bulk Freeze-Drying Milling: a Versatile Method of Developing Highly Porous Cushioning Excipients for Compacted Multiple-Unit Pellet Systems (MUPS)

L. Chan, P. Heng, Carin Ru Shan Siow, 2017, AAPS PharmSciTech.

Development of potential novel cushioning agents for the compaction of coated multi-particulates by co-processing micronized lactose with polymers.

Paul Wan Sia Heng, Yi Feng, P. Heng, 2011, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

A study on the impact of HPMC viscosity grade and proportion on the functional properties of co-freeze-dried mannitol-HPMC cushioning excipients for compacted MUPS

L. Chan, P. Heng, Carin Ru Shan Siow, 2020, European Journal of Pharmaceutics and Biopharmaceutics.

Effects of Particle Surface Roughness on In-Die Flow and Tableting Behavior of Lactose.

C. Liew, P. Heng, J. Tay, 2019, Journal of pharmaceutical sciences.

Influence of spray nozzle aperture during high shear wet granulation on granule properties and its compression attributes

C. Liew, P. Heng, Hui Ping Goh, 2018, International journal of pharmaceutics.

Understanding disintegrant action by visualization.

Parind Mahendrakumar Desai, Celine Valeria Liew, Paul Wan Sia Heng, 2012, Journal of pharmaceutical sciences.

A study of the impact of excipient shielding on initial drug release using UV imaging

P. Heng, Tze Ning Hiew, Siang Meng Chua, 2018, International journal of pharmaceutics.

Effect of polymer molecular weight on the structural properties of non aqueous ethyl cellulose gels intended for topical drug delivery

S. Kasapis, P. Heng, L. Bruno, 2012 .

Influence of polyvinylpyrrolidone on aggregation propensity of coated spheroids.

P. Heng, T. Wong, L. Chan, 2002, International journal of pharmaceutics.

Layered growth with bottom-spray granulation for spray deposition of drug.

C. Liew, P. Heng, Dawn Z L Er, 2009, International journal of pharmaceutics.

Formulation and process strategies to minimize coat damage for compaction of coated pellets in a rotary tablet press: A mechanistic view.

Min Xu, C. Liew, P. Heng, 2016, International journal of pharmaceutics.

A mechanistic investigation on the utilization of lactose as a protective agent for multi-unit pellet systems

Lai Wah Chan, Paul Wan Sia Heng, L. Chan, 2016, Pharmaceutical development and technology (Print).

Influence of partially cross-linked alginate used in the production of alginate microspheres by emulsification

L. Chan, P. Heng, H. Lee, 2005, Journal of microencapsulation.

A Study on Microwave-Induced Melt Granulation in a Single Pot High Shear Processor

C. Liew, P. Heng, Z. H. Loh, 2008 .

Study of coat quality of tablets coated by an on-line supercell coater

A. J. Wigmore, C. Liew, P. Heng, 2007, AAPS PharmSciTech.

Preparation of coated particles using a spray drying process with an aqueous system

P. Heng, C. G. Chia, L. Wan, 1991 .

A novel time-controlled release system based on drug-resin complexes and elementary osmotic pump.

P. Heng, Chao Wang, W. Pan, 2008, Chemical & pharmaceutical bulletin.

Influence of viscosity and uronic acid composition of alginates on the properties of alginate films and microspheres produced by emulsification

L. Chan, P. Heng, A. Dolzhenko, 2006, Journal of microencapsulation.

Delivery of hypericin for photodynamic applications.

K. Soo, M. Olivo, P. Heng, 2006, Cancer letters.

Potentiation of the photodynamic action of hypericin.

Malini Olivo, Paul Wan Sia Heng, M. Olivo, 2008, Journal of environmental pathology, toxicology and oncology : official organ of the International Society for Environmental Toxicology and Cancer.

Superiority of N-methyl pyrrolidone over albumin with hypericin for fluorescence diagnosis of human bladder cancer cells implanted in the chick chorioallantoic membrane model.

K. Soo, M. Olivo, P. Heng, 2007, Journal of photochemistry and photobiology. B, Biology.

Enhanced photodynamic activity of hypericin by penetration enhancer N-methyl pyrrolidone formulations in the chick chorioallantoic membrane model.

Malini Olivo, Paul Wan Sia Heng, Khee Chee Soo, 2006, Cancer letters.

Chlorin e6-polyvinylpyrrolidone as a fluorescent marker for fluorescence diagnosis of human bladder cancer implanted on the chick chorioallantoic membrane model.

Malini Olivo, Paul Wan Sia Heng, Weber Kam On Lau, 2007, Cancer letters.

A study comparing endogenous protoporphyrin IX induced by 5-ALA and ALA-methyl ester with exogenous PpIX and PpIX dimethyl ester in photodynamic diagnosis of human nasopharyngeal carcinoma xenografts.

Malini Olivo, Paul Wan Sia Heng, Khee Chee Soo, 2006, International journal of oncology.

Investigation on Side-Spray Fluidized Bed Granulation with Swirling Airflow

L. Chan, P. Heng, P. M. Wong, 2013, AAPS PharmSciTech.

Fluorescence imaging and phototoxicity effects of new formulation of chlorin e6-polyvinylpyrrolidone.

Malini Olivo, Paul Wan Sia Heng, Weber Kam On Lau, 2006, Journal of photochemistry and photobiology. B, Biology.

Use of a Fluidized Bed Hammer Mill for Size Reduction and Classification: Effects of Process Variables and Starting Materials on the Particle Size Distribution of Milled Lactose Batches

L. Chan, P. Heng, C. C. Lee, 2003, Pharmaceutical development and technology.

Formation of alginate microspheres produced using emulsification technique.

L. Chan, P. Heng, T. Wong, 2003, Journal of microencapsulation.

Ultrafine grinding using a fluidized bed opposed jet mill: effects of process parameters on the size distribution of milled particles

L. Chan, P. Heng, C. C. Lee, 2000 .

Effects of poly(vinylpyrrolidone) and ethylcellulose on alginate microspheres prepared by emulsification.

L. Chan, P. Heng, 1998, Journal of microencapsulation.

Near infrared spectroscopy for rapid and in-line detection of particle size distribution variability in lactose during mixing.

L. Chan, P. Heng, E. Widjaja, 2019, International journal of pharmaceutics.

Application of Near-Infrared Spectroscopy in Real-Time Monitoring of Product Attributes of Ribbed Roller Compacted Flakes

A. Samanta, P. Heng, K. Y. Ng, 2013, AAPS PharmSciTech.

Calibration sampling paradox in near infrared spectroscopy: a case study of multi-component powder blend.

C. Liew, P. Heng, A D Karande, 2010, International journal of pharmaceutics.

In-line quantification of micronized drug and excipients in tablets by near infrared (NIR) spectroscopy: Real time monitoring of tabletting process.

Celine Valeria Liew, Paul Wan Sia Heng, C. Liew, 2010, International journal of pharmaceutics.

A study of 5-aminolevulinic acid and its methyl ester used in in vitro and in vivo systems of human bladder cancer.

K. Soo, M. Olivo, Wei Zheng, 2003, International journal of oncology.

An improved method for the measurement of colour uniformity in pellet coating.

L. Chan, P. Heng, W. Chan, 2001, International journal of pharmaceutics.

Distribution of a viscous binder during high shear granulation--sensitivity to the method of delivery and its impact on product properties.

Celine Valeria Liew, Paul Wan Sia Heng, C. Liew, 2014, International journal of pharmaceutics.

Effects of process variables and their interactions on melt pelletization in a high shear mixer

L. Chan, P. Heng, L. W. Chan, 2000 .

Investigation of Wetting Behavior of Nonaqueous Ethylcellulose Gel Matrices Using Dynamic Contact Angle

L. Chan, P. Heng, K. Chow, 2006, Pharmaceutical Research.

Continuous manufacturing: the future in pharmaceutical solid dosage form manufacturing

Griet Van Vaerenbergh, C. Liew, P. Heng, 2015 .

Optimization of Process Parameters for a Quasi-Continuous Tablet Coating System Using Design of Experiments

L. Chan, P. Heng, C. Cahyadi, 2011, AAPS PharmSciTech.

Insights into the Moisture Scavenging Properties of Different Types of Starch in Tablets Containing a Moisture-Sensitive Drug.

C. Liew, P. Heng, Tze Ning Hiew, 2020, Molecular pharmaceutics.

Relative Humidity Cycling: Implications on the Stability of Moisture-Sensitive Drugs in Solid Pharmaceutical Products.

C. Liew, P. Heng, N. Verónica, 2022, Molecular pharmaceutics.

Understanding effects of process parameters and forced feeding on die filling

C. Liew, P. Heng, Hui Ping Goh, 2018, European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences.

Tablet compression tooling - Impact of punch face edge modification.

C. Liew, P. Heng, Parthiban Anbalagan, 2017, International journal of pharmaceutics.

Influence of the Punch Head Design on the Physical Quality of Tablets Produced in a Rotary Press.

Srimanta Sarkar, C. Liew, P. Heng, 2017, Journal of pharmaceutical sciences.

Effect of Roughness on the Dispersion of Dry Powders for Inhalation: a Dynamic Visualization Perspective

S. Wereley, M. Carvajal, L. Chan, 2019, AAPS PharmSciTech.

Preparation of slab-shaped lactose carrier particles for dry powder inhalers by air jet milling

Changquan Calvin Sun, L. Chan, P. Heng, 2016, Asian journal of pharmaceutical sciences.

Powder dispersion mechanisms within a dry powder inhaler using microscale particle image velocimetry.

S. Wereley, M. Carvajal, L. Chan, 2016, International journal of pharmaceutics.

Dielectric properties of pharmaceutical materials relevant to microwave processing: effects of field frequency, material density, and moisture content.

C. Liew, P. Heng, Z. H. Loh, 2010, Journal of pharmaceutical sciences.

An investigation on the influence of a vinyl pyrrolidone/vinyl acetate copolymer on the moisture permeation, mechanical and adhesive properties of aqueous-based hydroxypropyl methylcellulose film coatings.

B. Sunderland, P. Heng, Teresa Swee Har Kwok, 2004, Chemical & pharmaceutical bulletin.

Dissolution of fine particle fraction from truncated Anderson cascade impactor with an enhancer cell

C. Liew, P. Heng, J. Tay, 2018, International journal of pharmaceutics.

Role of Base Plate Rotational Speed in Controlling Spheroid Size Distribution and Minimizing Oversize Particle Formation During Spheroid Production by Rotary Processing

C. Liew, P. Heng, L. Wan, 2000, Drug development and industrial pharmacy.

Effect of drug load and lipid–wax blends on drug release and stability from spray-congealed microparticles

L. Chan, P. Heng, Tze Ning Hiew, 2022, Pharmaceutical development and technology.

Influence of particle wall adhesion on particle electrification in mixers.

R. Tan, Kewu Zhu, P. Heng, 2007, International journal of pharmaceutics.

Role of solvent in interactions between fatty acids-based formulations and lipids in porcine stratum corneum.

Yi Yan Yang, P. Heng, Mei Yin Wang, 2004, Journal of controlled release : official journal of the Controlled Release Society.

Investigation on the impact of powder arching in small die filling

C. Liew, P. Heng, Hui Ping Goh, 2018, International journal of pharmaceutics.

Improved formulation of photosensitizer chlorin e6 polyvinylpyrrolidone for fluorescence diagnostic imaging and photodynamic therapy of human cancer.

Malini Olivo, Paul Wan Sia Heng, Khee Chee Soo, 2008, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Influences of Osmotic Agents in Diffusion Layer on Drug Release from Multilayer Coated Pellets

L. Chan, P. Heng, Jinsong Hao, 2004, Drug development and industrial pharmacy.

Spheronization conditions on spheroid shape and size

C. Liew, P. Heng, L. Wan, 1993 .

Drug release kinetics of bilayer-coated spheroids

P. Heng, Y. T. Tan, L. Wan, 1998 .

Elucidation of spheroid formation with and without the extrusion step

C. Liew, P. Heng, Siang Meng Chua, 2007, AAPS PharmSciTech.

Wet Spheronization by Rotary Processing—A Multistage Single‐Pot Process for Producing Spheroids

C. Liew, P. Heng, L. Gu, 2004, Drug development and industrial pharmacy.

Melt Processes for Oral Solid Dosage Forms

P. Heng, T. Wong, 2013 .

A probe test method for determination of molten binder tack.

P. Heng, T. Wong, L. Wan, 1999, Pharmaceutical development and technology (Print).

Effects of physical properties of PEG 6000 on pellets produced by melt pelletization.

P. Heng, T. Wong, L. Wan, 1999, Pharmaceutical development and technology (Print).

Influence of teardrop studs on rotating frictional base plate on spheroid quality in rotary spheronization.

C. Liew, P. Heng, L. Gu, 2002, International journal of pharmaceutics.

Optimization of spheroid production by centrifugal rotary processing

Paul Wan Sia Heng, P. Heng, Y. Tan, 1996 .

Influence of polytetrafluoroethylene on spheroid production by rotary processing

C. Liew, P. Heng, L. Wan, 1998 .

Spray congealing as a microencapsulation technique to develop modified-release ibuprofen solid lipid microparticles: the effect of matrix type, polymeric additives and drug–matrix miscibility

L. Chan, P. Heng, Priscilla Chui Hong Wong, 2015, Journal of microencapsulation.

Viscosity–temperature relationship of lipid‐based excipients amenable for spray congealing: Derivation of a rheological parameter with good correlation to particle size

L. Chan, P. Heng, Priscilla Chui Hong Wong, 2016 .

Formation of alginate microspheres produced using emulsification technique

L. Chan, P. Heng, T. Wong, 2003 .

Effect of tabletting compaction pressure on alginate microspheres.

C. Liew, L. Chan, P. Heng, 2000, Journal of microencapsulation.

A Study on the Impact of Hydroxypropyl Methylcellulose on the Viscosity of PEG Melt Suspensions Using Surface Plots and Principal Component Analysis

Ching Mien Oh, L. Chan, P. Heng, 2015, AAPS PharmSciTech.

The chick chorioallantoic membrane imaging method as a platform to evaluate vasoactivity and assess irritancy of compounds

L. Chan, P. Heng, Stephanie Li Mei Tay, 2012, The Journal of pharmacy and pharmacology.

Surface Modification of lactose carrier particles using a fluid bed coater to improve fine particle fraction for dry powder inhalers

C. Liew, P. Heng, N. Verónica, 2023, Pharmaceutical development and technology.

Particle Surface Roughness – Its Characterisation and Impact on Dry Powder Inhaler Performance

C. Liew, L. Chan, P. Heng, 2015 .

Role of Surfactant on Drug Release from Tablets

P. Heng, L. Wan, T. S. H. Ang, 1990 .

Complexation Between PVP and Gantrez Polymer and Its Effect on Release and Bioadhesive Properties of the Composite PVP/Gantrez Films

Z. Shen, L. Chan, P. Heng, 2005, Pharmaceutical development and technology.

The effect of moisture on the cohesive properties of microcrystalline celluloses

P. Heng, JOHN N. STANIFORTH, 1988, The Journal of pharmacy and pharmacology.

Physical Properties of Granules Containing Polysorbate 80

P. Heng, L. Wan, 1987 .

Ultrafine Grinding Using a Fluidized Bed Opposed Jet Mill: Effects of Feed Load and Rotational Speed of Classifier Wheel on Particle Shape

L. Chan, P. Heng, C. C. Lee, 2002, Drug development and industrial pharmacy.

Assessment of powder cohesiveness in spheronization studies

P. Heng, L. Wan, B. L. Ling, 1995 .

Powder Flow Testing: Judicious Choice of Test Methods

C. Liew, P. Heng, J. Tay, 2016, AAPS PharmSciTech.

The potential application of chlorin e6—polyvinylpyrrolidone formulation in photodynamic therapy

Malini Olivo, Paul Wan Sia Heng, Weber Kam On Lau, 2006, Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology.

Controlled release drug delivery systems

P. Heng, 2018, Pharmaceutical development and technology.

Chick Chorioallantoic Membrane as an In Situ Biological Membrane for Pharmaceutical Formulation Development: A Review

C. Liew, P. Heng, C. L. Saw, 2008 .

Influence of disintegrants in different substrate physical form on dimensional recovery of multi-component tablet.

C. Liew, P. Heng, S. M. Ooi, 2014, International journal of pharmaceutics.

A Study on In-Line Tablet Coating—the Influence of Compaction and Coating on Tablet Dimensional Changes

L. Chan, P. Heng, C. Cahyadi, 2012, AAPS PharmSciTech.

Immobilization of fine particles on lactose carrier by precision coating and its effect on the performance of dry powder formulations.

L. Chan, P. Heng, L. T. Lim, 2003, Journal of pharmaceutical sciences.

Application of the Modified Tangential Spray-Fluidized Bed to Produce Nonpareils from Primary Crystals

L. Chan, P. Heng, Ramy N. Elsergany, 2019, AAPS PharmSciTech.

Application of the Modified Tangential Spray-Fluidized Bed to Produce Nonpareils from Primary Crystals

L. Chan, P. Heng, Ramy N. Elsergany, 2019, AAPS PharmSciTech.

Improving Dry Powder Inhaler Performance by Surface Roughening of Lactose Carrier Particles

L. Chan, P. Heng, B. M. J. Tan, 2016, Pharmaceutical Research.

Preparation of Crosslinked Alginate-Cellulose Derivative Microparticles for Protein Delivery

P. Heng, T. Tumolva, Rodel D. Guerrero, 2022, Key Engineering Materials.

Modifying matrix micro-environmental pH to achieve sustained drug release from highly laminating alginate matrices.

C. Liew, P. Heng, Ai Ling Ching, 2008, European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences.

A Study of Moisture Sorption and Dielectric Processes of Starch and Sodium Starch Glycolate

Y. Feldman, I. Popov, P. Heng, 2017, Pharmaceutical Research.

Development of potential novel cushioning agents for the compaction of coated multi-particulates by co-processing micronized lactose with polymers.

P. Heng, Yi Feng, K. Ruan, 2011, European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V.

Surfactant effect on the dissolution of sulfanilamide granules.

P. Heng, L. Wan, 1985, Journal of pharmaceutical sciences.