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工程热物理学报 2021年第1期42卷 232-238页

作者：周致富张璐游典 safwan hanis mohd murad Richard Stone 西安交通大学动力工程多相流国家重点实验室西安710049 重庆长安汽车股份有限公司重庆400023 牛津大学工程科学系牛津0X13PJ

直喷发动机燃油喷雾撞击壁面形成油膜,导致燃烧效率降低,颗粒物排放增加。伴随撞壁的动态传热过程对油膜蒸发具有重要影响。本文针对正戊烷、甲醇、甲醇汽油混合燃料瞬态喷雾撞击壁面,研究了不同条件下蒸发性对燃油瞬态喷雾撞击壁面动... 详细信息

直喷发动机燃油喷雾撞击壁面形成油膜,导致燃烧效率降低,颗粒物排放增加。伴随撞壁的动态传热过程对油膜蒸发具有重要影响。本文针对正戊烷、甲醇、甲醇汽油混合燃料瞬态喷雾撞击壁面,研究了不同条件下蒸发性对燃油瞬态喷雾撞击壁面动态传热影响。结果表明,提高喷油温度可促进燃油雾化,增大喷油压力或降低喷油距离可提高液滴撞壁强度,缩短液膜存在时间。撞壁瞬态温度与热流密度动态变化特征受燃油蒸发性与喷雾条件联合影响。

关键词：瞬态喷雾液滴撞壁动态传热燃油蒸发性 GDI发动机

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Chicken Eggshell as an Innovative Bioflocculant in Harvesting Biofloc for Aquaculture Wastewater Treatment

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Journal of Renewable Materials 2023年第5期11卷 2321-2332页

作者： Hajjar Hartini Wan Jusoh Nor Azman Kasan Hidayah Manan Nurfarahana mohd Nasir Fareza hanis mohd Yunos Sofiah Hamzah Ahmad Jusoh Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia TerengganuKuala NerusTerengganu21030Malaysia Institute of Tropical Aquaculture and Fisheries(AKUATROP) Universiti Malaysia TerengganuKuala NerusTerengganu21030Malaysia Faculty of Engineering Universiti Putra MalaysiaUPM SerdangSelangor Darul Ehsan43400Malaysia

Implementation of biofloc technology(BFT)system in aquaculture industry shows high productivity,low feed conversion ratio,and an optimum culture *** study was divided into two *** first phase involved maintaining the water quality using the optimum carbon-to-nitrogen ratio by manipulating pH in culture *** second phase examined the performance of harvesting biofloc(remaining phytoplankton and suspended solids in the system)using chicken eggshell powder(CESP).This study showed that pH 7 to 8 were the best biofloc performance with high removal percentage of ammonia(>99%)with a remaining ammonia concentration of 0.016 mg L^(−1)and 0.018 mg L^(−1),*** second phase of this study was performed to determine the optimal formulation and conditions of using CESP as a bio-flocculant in harvesting excess *** use of eggshell showed a higher harvesting efficiency of more than 80%under the following treatment conditions:0.25 g L^(−1)of eggshell dosage;with rapid and slow mixing rates of 150 and 30 rpm,respectively;30 min of settling time;settling velocity of 0.39 mm s^(−1)and pH of 6 to ***,the results indicated that biofloc would be the best green technology approach for sustainable aquaculture wastewater and the CESP is an organic matrix that environmental-friendly bio-coagulant for biofloc harvesting.

关键词： Chicken eggshell aquaculture biofloc coagulant water quality harvesting

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Physicochemical Analysis of Selected Durian Hybrids at Bukit Tangga, Kedah, Malaysia

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Journal of Agricultural Science and Technology(B) 2012年第12期2卷 1262-1267页

作者： mohd Asrul Sani Bahari mohd Masaruddin Nor hanis Aifaa Yusoff Horticulture Research Centre Malaysian Agricultural Research and Development Institute Bukit Tangga Kedah Malaysia

The physicochemical analysis was carried out to quantify the total soluble solids, acidity, pH, ascorbic acid contents and pulp colour of eight selected durian hybrid clones. The aim of this study was to select the most promising durian hybrids for commercialization. The durian hybrid fruits were collected in an established durian research plot. All tested characteristics with the exception for total soluble solids （TSS） showed significant differences （P 〈 0.05） amongst the eight durian hybrids with four check cultivars. F1 hybrid 15-3 had significantly higher pH （7.25） and lower titratable acidity （0.09%） than other hybrids. While for ascorbic acid content, durian hybrid 7-3 （26.13 rag/100 g） showed significantly higher than other hybrids. As for pulp colour, hybrids 1-15, 1-17 and 7-20 were yellowish orange/deep yellow. Even though there was no significant differences for TSS, three durian hybrids showed value above 39.00 °Brix and there were hybrid 14-3 （39.97 °Brix）, hybrid 8-16 （39.83 °Brix） and hybrid 7-3 （39.50 °Brix）. Based on the results of this study, Fl hybrids durian 1-15, 7-3, 8-16, 14-3 and 15-3 shall become successful candidates for recommendation to farmers for commercial production in Malaysia. However, further evaluations on fruit eating quality and stability of the hybrids should be completed prior to recommendation for commercialization.

关键词： Durio zibethinus Murr. physicochemical analysis durian hybrids.

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3D Reconstruction of Fruit Shape based on Vision and Edge Sections

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Journal of Electronic & Information Systems 2022年第1期4卷 26-32页

作者： Nasr Abdalmanan Nasr Ali Kamarulzaman Kamarudin Chee Kiang Lam Muhamad safwan Muhamad Azmi Abdul Halim Ismail Norasmadi Abdul Rahim Wan mohd Nooriman Wan Yahya Goh Kheng Sneah Moey Lip Seng Teoh Phaik Hai Ong Thean Lye Noor Zafira Noor Hasnan Faculty of Electrical Engineering Technology Universiti Malaysia PerlisKampus Alam Pauh PutraArauPerlis02600Malaysia Faculty of Mechanical Engineering Technology Universiti Malaysia PerlisKampus Alam Pauh PutraArauPerlis02600Malaysia Walta Engineering Sdn.Bhd. PraiPulau Pinang13600Malaysia Department of Process and Food Engineering Faculty of EngineeringUniversiti Putra MalaysiaUPM SerdangSelangor43400Malaysia

The fruit industry has been known as one of the largest businesses in Malaysia,where most of the fruits pass through the peeling process well in advance before the final product as juice in a bottle or slices in a *** current industrial fruit peeling techniques are passive and inefficient by cutting parts of the pulp of the fruit with peels leading to *** avoid this issue,a multi-axis CNC fruit peeler can be used to precisely peel the outer layer with the guidance of a 3D virtual model of *** this work,a new cost-effective method of 3D image reconstruction was developed to convert 36 fruit images captured by a normal RGB camera to a 3D model by capturing a single image every 10 degrees of fruit rotation along a fixed *** point cloud data extracted with edge detection were passed to Blender 3D software for meshing in different *** vertical link frame meshing method developed in this research proved a qualitative similarity between the output result and the scanned fruit in a processing time of less than 50 seconds.

关键词： 3D Reconstruction Machine vision Fruit processing

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