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Atefeh Seyyedan,Farhana Yahya,Mohammad Fauzi Fahmi Kamarolzaman,Zarizal Suhaili,Mohd Nasir Mohd Desa,Hussain Mohd Khairi,Muhammad Nazrul Somchit,Corazon Abdullah Fatimah,Lay Kek Teh,Mohd Zaki Salleh,Z 셀메드 세포교정의약학회 2013 TANG Vol.3 No.3
Piper sarmentosum is a creeping herb belongs to the family of Piperaceae. It is locally known to the Malays as ‘Pokok kadok’ and can be found in different regions of South-East Asia including Malaysia. Ethnopharmacologically, various parts of the plant (e.g. leave, fruit and root) are widely used in Asian countries for centuries to treat different types of diseases and ailments such as hypertension, diabetes, joint aches, muscle pain, coughs, influenza, toothaches and rheumatism. Scientific findings also demonstrated different pharmacological actions of various parts of P. sarmentosum such as adulticidal, antitermite, antioxidant, antifungal, antituberclosis, antiplasmoid, antimalarial, hypoglycemia, antiinflammatory, antinoceptive, antipyretic, antibacterial, anticancer, antituberculosis, antiangiogenesis, antimicrobial, antifeedant and cytotoxic activities. Different types of phytochemical constituents have been successfully identified and isolated from various parts of P. sarmentosum. Therefore, the information related to the botany, ethnomedicinal uses, phytochemical constituents and pharmacological activities of P. sarmentosum were reviewed here.
Z. Adnan,S. H. S. M. Fadzullah,G. Omar,Z. Mustafa,M. B. Ramli,N. Razali,A. A. Kamarolzaman 대한금속·재료학회 2021 ELECTRONIC MATERIALS LETTERS Vol.17 No.4
This paper presents a study on Hybrid Electrically Conductive Adhesive (HECA) properties as an in-depth analysis regardinghybrid fi ller ratio at low fi ller range. It is well established that the hybridization approach exhibits excellent functionalproperties of HECA. Still, the highest potential ability of the proposed HECA concerning relative amounts of involvingfi llers is the least being discovered. In this work, silver micro-fl ake (AgMF) and multiwalled carbon nanotube (MWCNT)conductive fi llers were incorporated from 3 to 15 wt.%, while AgMF: MWCNT fi ller ratio is varied between 0.006 up to 0.2to choose the best combination. Here, a planetary centrifugal mixer with diff erent mixing time and sequence were consideredto identify the most eff ective mixing method. The functional properties of HECA were characterized in terms of a four-pointprobe electrical test and a lap shear test via tensile mode. The morphological study suggests that a shorter centrifugal mixingperiod allows an adequate dispersion of the micro-nano fi llers in the HECA system and revealed superior interfacial bondingbetween the fi llers at the optimum ratio. Interestingly, electrical resistivity at critical concentration showed an optimumratio by incorporating only 2.5% AgMF in the hybrid fi llers to yield a 42.62% reduction. However, the signifi cant eff ects ofhybridization are observed until the percolation threshold of HECA at 9 wt% only, followed by a 38.5% reduction beyondthis limit. Moreover, the lap shear strength is most reliable at a total fi ller of 6 wt%, an indication of an excellent fi ller-binderload distribution.