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Retricted access

Research article

First published 2015-2

Characterization of oil palm ash (OPA) and thermal properties of OPA-filled natural rubber compounds

Zhong Xian Ooi, Hanafi Ismail, Azhar Abu Bakar

Journal of Elastomers & Plastics

Retricted access

Research article

First published 2003-1

Use of the Orthogonal Projection Approach (OPA) to Monitor Batch Processes

S. Gourvénec, C. Lamotte, P. Pestiaux [...]

Applied Spectroscopy

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Research article

First published 2007-07

Flue Gas Desulfurization Using Sorbent Synthesized from Lime (CaO) and Oil Palm Ash (OPA) Derived from Empty Fruit Bunches (EFB): Statistical Design Approach

Irvan Dahlan, Tai Chiew Li, Keat Teong Lee [...]

Environmental Engineering Science

Open access

Research article

First published 2020-10

Opa-Interacting Protein 5 Expression in Human Glioma Tissues Is Essential to the Biological Function of U251 Human Malignant Glioma Cells

Libo Chen, Ruizhi Wang, Ligui Gao [...]

Cancer Control

Open access

Research article

First published 2026-3

Social media use for offline political action (OPA) and corruption in Africa: Impacts and transmission channels

Sylvain B. Ngassam, Simplice A. Asongu, Gildas T. Ngueuleweu

Information Development

Free access

Research article

First published 2017-6

The effect of acute ophiobolin A treatment on HO-mediated inflammatory processes

Anikó Pósa, Renáta Szabó, Zita Szalai [...]

Human & Experimental Toxicology

Retricted access

Research article

First published 2020-3

Power system security improvement using an OPA model and IPSO algorithm

Saeed Hasanvand, Hossein Fallahzadeh-Abarghouei, Esmaeil Mahboubi-Moghaddam

SIMULATION

Open access

Research article

First published 2017-10

Opa-interacting protein 5 modulates docetaxel-induced cell death via regulation of mitophagy in gastric cancer

Tae Woo Kim, Seon-Jin Lee, Young-Jun Park [...]

Tumor Biology

Retricted access

Research article

First published 1943-4

The Opa Economy for Victory Program

Merle Fainsod, Walter Thompson

Journal of Marketing

Retricted access

Research article

First published 2000-4

Determination of the End Point of a Chemical Synthesis Process Using On-Line Measured Mid-Infrared Spectra

K. De Braekeleer, A. de Juan, F. Cuesta Sánchez [...]

Applied Spectroscopy

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