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| 1 | Synthesis of ion imprinted polymers for selective recognition and separation of rare earth metals显示文摘Lanthanide-ion imprinted polymers(L-IIPs) were synthesized by stoichiometric amounts of rare earth ions and the cavities in the polymers were created for the corresponding lanthanide ions. The maximum sorption capacities were estimated to be 125.3, 126.5, 127.6, 128.2 and 129.1 mg/g for Pr, Nd, Sm, Eu and Gd, respectively at p H 6. In the selectivity study, the L-IIPs exhibited good selectivity to the specific rare earth ions in the presence of coexisting cations. The imprinting results were found to be excellent with some rare earth ions over other competitor rare earth ions with the same charges and close ionic radius. | Mashitah M.Yusoff Nik Rohani Nik Mostapa Md Shaheen Sarkar Tapan Kumar Biswas Md Lutfor Rahman Sazmal Effendi Arshad Mohd Sani Sarjadi Ajaykumar D.Kulkarni | 2017 | Journal of Rare Earths2017，35，2： | 6 |
| 2 | Numerical and experimental investigation of three-dimensionality in the dam-break flow against a vertical wall显示文摘The three-dimensionality extent of the dam break flow over a vertical wall is investigated numerically and experimentally in this paper. The numerical method is based on Reynolds averaged Navier-Stokes(RANS) equation that describes the three-dimensional incompressible turbulent flow. The free surface is captured by using the unstructured multi-dimensional interface capturing(UMTHINC) scheme. The equations are discretized on 2-D and 3-D unstructured grids using finite volume method. The numerical simulations are compared with newly conducted experiment with emphasis on the effect of three-dimensionality on both free surface and impact pressure. The comparison between the numerical and experimental results shows good agreement. Furthermore, the results also show that 3-D motion of the flow originates at the moment of impact at the lower corners of the impact wall and propagates to the inner region as time advances. The origin of the three-dimensionality is found to be the turbulence development as well as the relative velocity between the side wall region and the inner region of the wave front at the moment of impact. | Mohamed M.Kamra Nik Mohd Cheng Liu Makoto Sueyoshi Changhong Hu | 2018 | Journal of Hydrodynamics2018，30，4： | 5 |
| 3 | 有机氮肥对马来西亚沙捞越州酸性土壤玉米干物质产量及铵态氮和硝态氮含量的影响显示文摘腐殖质中的腐植酸和黄腐酸可以提高土壤中可交换性铵(NH4+)的回收率。这两种酸固定和保持NH4+的能力已经在许多研究中得到了证实,二者通过提高植株的光合作用速率、促进根系发育影响植物的生长和养分吸收。因此,本研究调查了这两种酸(液态)对玉米干物质产量、土壤铵态氮和硝态氮(NO3-)含量的影响。根据液态有机氮肥的组成,采用标准方法分离提纯腐植酸。有机氮肥在玉米种植后第10天、第28天分别施入盆栽土壤,然后在种植后第54天或孕穗期采集植株和土壤样品。土壤样品分析pH、铵态氮和硝态氮含量,植株样品测定干物质产量。结果表明,在酸性条件下,液态有机氮肥(黄腐酸、腐植酸或二者同时施用)的施用可以提高土壤中NH4+的累积量。随土壤活性碳储量的增加,腐植酸分子上羧基官能团对土壤NH4+的吸附能力增强。然而,酸含量较低时对干物质产量的影响明显减小。各处理间硝态氮的有效性没有达到统计上的差异显著水平。较低的pH值能抑制土壤硝化作用进程,同时降低土壤NO3-含量。这表明液态腐植酸和/或黄腐酸在提高尿素利用效率方面发挥着重要作用。然而,与腐植酸分子特性有关的作用机理还需要进一步详细研究。本研究为液态和叶面有机肥料的发展提供一定的依据。 | Susilawati Kasim Osumanu Haruna Ahmed Nik Muhamad Ab.Majid Mohd Khanif Yusop Mohamadu Boyie Jalloh 王艳群 孙志梅 | 2011 | 腐植酸2011，，2： | 2 |
| 4 | Markov Chain Modelling of Reliability Analysis and Prediction under Mixed Mode Loading显示文摘The reliability assessment for an automobile crankshaft provides an important understanding in dealing with the design life of the component in order to eliminate or reduce the likelihood of failure and safety risks.The failures of the crankshafts are considered as a catastrophic failure that leads towards a severe failure of the engine block and its other connecting subcomponents.The reliability of an automotive crankshaft under mixed mode loading using the Markov Chain Model is studied.The Markov Chain is modelled by using a two-state condition to represent the bending and torsion loads that would occur on the crankshaft.The automotive crankshaft represents a good case study of a component under mixed mode loading due to the rotating bending and torsion stresses.An estimation of the Weibull shape parameter is used to obtain the probability density function,cumulative distribution function,hazard and reliability rate functions,the bathtub curve and the mean time to failure.The various properties of the shape parameter is used to model the failure characteristic through the bathtub curve is shown.Likewise,an understanding of the patterns posed by the hazard rate onto the component can be used to improve the design and increase the life cycle based on the reliability and dependability of the component.The proposed reliability assessment provides an accurate,efficient,fast and cost effective reliability analysis in contrast to costly and lengthy experimental techniques. | SINGH Salvinder ABDULLAH Shahrum NIK MOHAMED Nik Abdullah MOHD NOORANI Mohd Salmi | 2015 | Chinese Journal of Mechanical Engineering2015，28，2： | 2 |
| 5 | Risk Assessment of Metal Contamination in Soil and Groundwater in Asia: A Review of Recent Trends as well as Existing Environmental Laws and Regulations显示文摘Asia is experiencing a more rapid economic growth compared to any other regions. The contamination of soil and groundwater with metals can mainly be attributed to human activities; therefore, risk assessments to characterize the nature and magnitude of risks to humans and ecological receptors from contaminants are important. Risk assessments are often iterative processes, which involve identification and filling data gap. Experimental samplings, geostatistical and multivariate statistical methods as well as multimedia risk assessment modeling are the three major methodologies used in the assessment of metal contamination in soil and groundwater.This review highlights a number of measurements for improving risk calculation methods and expounds scientific approaches that involve the identification of the major source of contamination, exposure pathways and bioavailability of metals. In general, risk assessments of metals in soil and groundwater worldwide are mainly focused on the levels of contamination, identification of exposure pathways, and prediction of the probability of contamination. To date, very limited studies have reported the development of relevant environmental laws and policies in the regulation of soil and groundwater contamination in Asia. The development, variations and limitations in the regulations of soil and groundwater contamination among developed countries may provide helpful guidance for the developing countries in Asia. | Tianlik TEH Nik Abdul Rahman NIK NORULAINI Mohammad SHAHADAT Yoonsing WONG Abdul Kadir MOHD OMAR | 2016 | Pedosphere2016，26，4： | 2 |
| 6 | Removal of Cr(VI) and As(V) from aqueous solutions by HDTMA-modified zeolite Y显示文摘 | Alias Mohd Yusof Nik Ahmad Nizam Nik Malek | 2008 | Journal of Hazardous Materials2008，，2： | 1 |
| 7 | Blending of supercritical carbon dioxide(SC-CO2)extracted palm kernel oil fractions and palm oil to obtain cocoa butter replacers显示文摘 | Zaidul I S M Nik Norulaini M A Mohd Omar A K | 2007 | Journal of Food Engineering2007，78，4： | 1 |
| 8 | Supercritieal carbon dioxide(SC-COz ) extraction of palm kernel oil from palm kernel显示文摘 | Zaidul I S M Nik N N A Mohd O A K | 2007 | Journal of Food Engineering2007，79，3： | 1 |
| 9 | Blending of supercritical carbon dioxide ( SC - C02) extracted palm kernel oil fractions and palm oil to obtain cocoa butter replacers 显示文摘 | Zaidul ISM Nik Norulaini M A Mohd Omar A K | 2007 | Journal of Food Engineering2007，78，4： | 1 |
| 10 | Limiting permeate flux in the clarification of untreated starfruit juice by membrane ultrafiltration显示文摘 | Mohd Zaki Sulaiman Nik Meriam Sulaiman Liew Shyue Yih | 1998 | Chemical Engineering Journal1998，69，： | 1 |
| 11 | Removal of Ca>and Zn>from aqueous solutions by zeolites NaP and KP显示文摘 | Alias Mohd Yusof Nik Ahmad Nizam Nik Malek | 2001 | Environmental Technology2001，31，1： | 1 |
| 12 | Documentation of self-care actions taken for somatic complaints by postmenopausal Malay women living in Kelantan Malaysia显示文摘 | Hardip-Kaur Dhillon Nik Mohd Zaki Nik Mahmood Har-bindarjeet Singh | 2007 | Maturitas2007，58，： | 1 |
| 13 | Documenta- tion of self-care actions takdn for somatic complaints by postmenopausal Malay women living in KelantanMalaysia显示文摘 | Hardip Kaur Dhillon Nik Mohd Zaki Nik Mahmood | 2007 | Maturitas2007，，58： | 1 |
| 14 | Laboratory efficacy of mycoparasitic fungi(Aspergillus tubingensis and Trichoderma harzianum) against tropical bed bugs(Cimex hemipterus)(Hemiptera:Cimicidae)显示文摘Objective: To test the effectiveness of conidial spore formulations [Aspergillus tubingensis(A.tubingensis) and Trichoderma harzianum(T.harzianum)] against tropical bed bugs, Cimex hemipterus.Methods: Spore formulations were made from two fungal strains, T.harzianum and A.tubingensis.The bed bugs were exposed to the conidial spores placed soaked onto a fabric cloth for 1 h and the mortality counts were recorded daily until 14 days.Results: Mean survival times based on Kaplan–Meier survival analysis showed no significant differences between all the concentrations in both the fungal isolates:T.harzianum and A.tubingensis.However, the evaluation of both the isolates in terms of virulence resulted in low lethal hours in all the concentrations except for the high concentration of A.tubingensis(LT_(50)= 44.629 h) at the conidial exposure of 1 × 10~6 spores/mL.Rapid mortality of the bed bugs was observed from Day 6 to Day 12, ranging from 13% to 90% in all three concentrations of A.tubingensis.With reference to the T.harzianum exposure, the concentration of 1 × 10~4 spores/mL displayed a gradual increase in the percentage mortality of 90 on Day 14.Conclusions: Approaches to the bed bugs treatment should be explored in-depth using a natural biological agent like fungus especially A.tubingensis to reduce this pest population, in order to replace chemical methods. | Zulaikha Zahran Nik Mohd Izham Mohamed Nor Hamady Dieng Tomomitsu Satho Abdul Hafiz Ab Majid | 2017 | Asian Pacific Journal of Tropical Biomedicine2017，7，4： | 1 |
| 15 | Electrocochleographic recording in Asian adults: Preliminary normative data and demographic analyses显示文摘Objective: Electrocochleography(ECochG) is valuable to diagnose Meniere's disease objectively. The aim of the present study was to provide preliminary normative data for ECochG among Asian adults. The influences of ethnicity(Malay versus Chinese) and gender on ECoch G results were also studied.Methods: Twenty-two Malay adults(10 men and 12 women) and twenty Chinese participants(10 men and 10 women) aged between 20 and 49 years participated in this study. Extratympanic ECoch G(ET-ECochG) was recorded according to standard non-invasive procedure. Summating potential(SP) amplitude, action potential(AP) amplitude and SP/AP ratio were analyzed accordingly.Results: ET-ECoch G results were found to be comparable between left and right ears(p > 0.05). No notable differences in ET-ECochG results were found between Malay and Chinese groups(p > 0.05). No significant influence of gender on ET-ECochG outcomes was also noted(p > 0.05). The derived normative data for Asian adults(84 ears) are consistent with previous reports.Conclusion: The present study provides preliminary normative data for ET-ECochG among Asian adults. The ECoch G components do not appear to be influenced by either ethnicity or gender. The derived normative data can be used for clinical applications and as the reference for future studies involving Asian population. | Mohd Normani Zakaria Nik Adilah Nik Othman Zalilah Musa | 2017 | Journal of Otology2017，12，1： | 1 |
| 16 | Blending of supercritical carbon dioxide (SC -CO2) extracted palm kernel oil fractions and palm oil to obtain cocoa butter replacers显示文摘 | Zaidul I S M Nik Norulaini M A Mohd Omar A K | 2007 | Journal of Food Engineering2007，78，4： | 1 |
| 17 | RVA analysis of mixtures of wheat flour and potato, sweet potato, yam, and cassava starches显示文摘 | I S M Zaidula N A Nik Norulaini A K Mohd Omar | 2007 | Carbohydrate Polymers2007，69，： | 1 |
| 18 | Supercritcal carbon dioxide (SC-CO2) extraction of palm kernel oil from palm kernel显示文摘 | ZAIDUL I S M NIK N N A MOHD O A K | 2007 | Journal of Food Engineering2007，79，3： | 1 |
| 19 | RVAanalysis of mixtures of wheat flour and potato,sweet potato,yam,and cassava starche显示文摘 | Zaidul I S M Nik Norulaini N A Mohd Omar A K | | 0，，： | 1 |
| 20 | Su- percritical carbon dioxide ( SC - C02) extraction and frac- tionatioa of palm kernel oil from palm kernel as cooca batter replacers blend 显示文摘 | I S M Zaidul N A Nik Norulaini A K Mohd Omar | 2006 | Journal of food engineering2006，73，3： | 1 |
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