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| 1 | Identification of Odor Volatile Compounds and Deodorization ofPaphia undulata Enzymatic Hydrolysate显示文摘Unfavorable fishy odour is an inevitable problem in aquatic products. In the present study, headspace solid-phase microextraction gas chromatography mass spectrometry(HS-SPME-GC-MS) analysis of volatiles from untreated samples and three deodorized samples(under the optimal conditions) of Paphia undulata enzymatic hydrolysate revealed that the compounds contributing to the distinctive odor were 1-octen-3-ol, n-hexanal, n-heptanal, 2,4-heptadienal, and 2,4-decadienal, whereas n-pentanal, n-octanal, n-octanol, benzaldehyde, 2-ethylfuran and 2-pentylfuran were the main contributors to the aromatic flavor. The deodorizing effects of activated carbon(AC) adsorption, yeast extract(YE) masking and tea polyphenol(TP) treatment on a P. undulata enzymatic hydrolysate were investigated using orthogonal experiments with sensory evaluation as the index. The following optimized deodorization conditions were obtained: AC adsorption(35 mg mL^(-1), 80℃, 40 min), YE masking(7 mg mL^(-1), 45℃, 30 min) and TP treatment(0.4 mg mL^(-1), 40℃, 50 min). AC adsorption effectively removed off-flavor volatile aldehydes and ketones. YE masking modified the odor profile by increasing the relative contents of aromatic compounds and decreasing the relative contents of aldehydes and ketones. The TP treatment was not effective in reducing the odor score, but it significantly reduced the relative content of aldehydes while increasing that of alkanes. It is also notable that TP effectively suppressed trimethylamine(TMA) formation in a P. undulate hydrolysate solution for a period of 72 h. | CHEN Deke CHEN Xin CHEN Hua CAI Bingna WAN Peng ZHU Xiaolian SUN Han SUN Huili PAN Jianyu | 2016 | Journal of Ocean University of China2016，15，6： | 10 |
| 2 | Ultrasonic Extraction of Polysaccharides from Laminaria japonica and Their Antioxidative and Glycosidase Inhibitory Activities显示文摘In the present study, ultrasonic extraction technique(UET) is used to improve the yield of polysaccharides from Laminaria japonica(LJPs). And their antioxidative as well as glycosidase inhibitory activities are investigated. Box-Behnken design(BBD) combined with response surface methodology(RSM) is applied to optimize ultrasonic extraction for polysaccharides. The optimized conditions are obtained as extraction time at 54 min, ultrasonic power at 1050 W, extraction temperature at 80℃ and ratio of material to solvent at 1:50(g m L-1). Under these optimal ultrasonic extraction conditions, an actual experimental yield(5.75% ± 0.3%) is close to the predicted result(5.67%) with no significant difference(P > 0.05). Vitro antioxidative and glycosidase inhibitory activities tests indicate that the crude polysaccharides(LJP) and two major ethanol precipitated fractions(LJP1 and LJP2) are in a concentration-dependent manner. LJP2(30%-60% ethanol precipitated polysaccharides) possesses the strongest α-glucosidase inhibitory activity and moderate scavenging activity against hydroxyl radicals(66.09% ± 2.19%, 3.0 mg m L-1). Also, the inhibitory activity against α-glucosidase(59.08% ± 3.79%, 5.0 mg m L-1) is close to that of acarbose(63.99% ± 3.27%, 5.0 mg m L-1). LJP1(30% ethanol precipitated polysaccharides) exhibits the strongest scavenging activity against hydroxyl radicals(99.80% ± 0.00%, 3.0 mgm L-1) and moderate α-glucosidase inhibitory activity(47.76% ± 1.92%, 5.0 mg m L-1). LJP shows the most remarkable DPPH scavenging activity(66.20% ± 0.11%, 5.0 mg m L-1) but weakest α-glucosidase inhibitory activity(37.77% ± 1.30%, 5.0 mg m L-1). However, all these LJPs exert weak inhibitory effects against α-amylase. These results show that UET is an effective method for extracting bioactive polysaccharides from seaweed materials. LJP1 and LJP2 can be developed as a potential ingredient in hypoglycemic agents or functional food for the management of diabetes. This study provides scientific evidence and advances in the preparation technology and a hypoglycemic activities evaluation method for seaweed polysaccharides, especially glycosidase inhibition in combination with an antioxidative activity evaluation method. | WAN Peng YANG Xiaoman CAI Bingna CHEN Hua SUN Huili CHEN Deke PAN Jianyu | 2015 | Journal of Ocean University of China2015，14，4： | 6 |
| 3 | MapReduce rationality verification based on object Petri net显示文摘As a powerful distributed data processing mechanism,MapReduce supports abundant parallel applications that process massive data on computer clusters.To process the massive data efficiently and correctly,a rational design for the MapReduce procedure is desired.An irrational MapReduce procedure can cause great waste of computing resources and even paralyze the execution system.With the wide application of MapReduce,the unavoidable drawback of irrational MapReduce procedures becomes increasingly serious.To solve this problem,a method for verifying the rationality of a MapReduce procedure before executing it on a computer cluster is proposed.This method constructs the rationality criteria for MapReduce,and then studies an automatic approach for modelling MapReduce with an executable model object Petri net(OPN).Finally,the approaches for automatically identifying the rationality criteria by analyzing the consequence of model execution is developed.The results from extensive case studies demonstrate that the proposed method is feasible and effective. | DING Zeliu GUO Deke CHEN Xi CHEN Jin | 2019 | Journal of Systems Engineering and Electronics2019，30，5： | 5 |
| 4 | Population-standardized genetic risk score: the SNP-based method of choice for inherited risk assessment of prostate cancer显示文摘几条不同途径对为决定前列腺癌症(PCa ) 风险的临床医生可得到。利用单个核苷酸多型性(SNP ) 的各种各样的 PCa 风险评价方法的临床的有效性被建立了;然而,这些基于 SNP 的方法没被比较。这研究的目的是为 PCa 风险评价比较三个最通常使用的基于 SNP 的方法。参加者是人(n = 1654 ) 在 PCa 开发的未来的研究注册了。59 PCa 联系风险的 SNP 的遗传型在这个队是可得到的。精明的基于 SNP 的基因风险分数(GRS ) 的三个方法被用于象风险等位基因计数那样的单个疾病风险的评估(GRS 皇家装甲兵) ,加权的风险等位基因计数(GRS-wRAC ) ,和标准化人口的基因风险得分(GRS-PS ) 。吝啬的 GRS 被计算,并且表演在操作典型曲线(AUC ) 和积极预兆的价值(PPV ) 的接收装置下面用区域被比较。所有基于 SNP 的方法被发现独立地与 PCa 被联系(所有 P <0.05;因此他们的临床的有效性) 。分别地,在人与或没有 GRS 皇家装甲兵使用的 PCa 的吝啬的 GRS 用 GRS-wRAC 是 55.15 和 53.46 分别地,是 7.42 和 6.97,使用的 GRS-PS 是 1.12 和 0.84,分别地(所有 P <0.05 为病人与或没有 PCa 之间的差别) 。在基于 AUC 从 non-PCa 区别 PCa 并且在预言 PCa 同样执行的所有三个基于 SNP 的方法基于 PPV 冒险(所有 P >0.05 为在三个方法之间的比较) ,并且所有三个基于 SNP 的方法比家庭历史有显著地更高的 AUC (所有 P <0.05 ) 。从这研究的结果建议当三个大多数通常使用了时, 基于SNP 的方法在在人口水平从 non-PCa 区别 PCa 同样表现了,因为, GRS-PS 是为在单个水平的风险评价的选择的方法它的价值(在 1.0 代表平均人口风险的地方)能容易不管在计算使用的联系风险的 SNP 的数字被解释。 | Carly A Conran Rong Na Haitao Chen Deke Jiang Xiaoling Lin S Lilly Zheng Charles B Brendler Jianfeng Xu | 2016 | Asian Journal of Andrology2016，18，4： | 4 |
| 5 | From one to crowd: a survey on crowdsourcing-based wireless indoor localization显示文摘 | Xiaolei ZHOU Tao CHEN Deke GUO Xiaoqiang TENG Bo YUAN | 2018 | Frontiers of Computer Science2018，12，3： | 2 |
| 6 | Expansible and cost-effective network structures for data centers using dual-portservers 显示文摘 | Guo Deke Chen Tao Li Dan | 2012 | IEEE Trans on Computers2012，62，7： | 1 |
| 7 | The dynamicbloom filters 显示文摘 | Guo Deke Wu Jie Chen Honghui | 2010 | IEEE Trans on Knowledge and DataEngineering2010，22，1： | 1 |
| 8 | The dynamic bloom filters显示文摘 | GUO Deke WU Jie CHEN Honghui | | 0，，01： | 1 |
| 9 | Trimethylamine Adsorption Mechanism on Activated Carbon and Removal in Water and Oyster Proteolytic Solution显示文摘In this study,seven coal-based activated carbons(ACs)were adopted to remove trimethylamine(TMA)in an aqueous solution as environmentally friendly and harmless adsorbents.The results showed that columnar AC(CAC)had a clear scale and honeycomb structures with few fragments and micropores,contributing to superior TMA removal capacity compared to granular AC(GAC)(71.67%for 6.0 mm CAC and 69.92%for 40–60 mesh GAC).In addition,the process of adsorption was accompanied by desorption,and the recommended absorbed time was 120–180 min.The short time to achieve equilibrium indicated that adsorption was kinetically controlled,and pseudo-second-order kinetics was more appropriate than pseudo-first-order kinetics in explaining the adsorption mechanism in both water and oyster enzymatic hydrolysate.The intraparticle diffusion model presented that the adsorption processes could be divided into three steps for GAC and two steps for CAC.The adsorption processes were consistent with the Freundlich model,indicating the existence of physisorption and chemisorption as multilayer adsorption.The results indicated that AC,especially CAC,has great potential for TMA elimination in aquatic product processing. | CHEN Deke WAN Peng CAI Bingna YE Ziqing CHEN Hua CHEN Xin SUN Huili PAN Jianyu | 2021 | Journal of Ocean University of China2021，20，6： | 1 |
| 10 | KMcube: the compound of Kautz digraph and Moibius cube显示文摘 | Xianpeng HUANGFU Deke GUO Honghui CHEN Xueshan LUO | 2013 | Frontiers of Computer Science2013，7，2： | 0 |
| 11 | 鼻咽癌放疗后困难气道1例报道(英文)显示文摘In this report, we describe radiation-induced difficult airway management in a patient with nasopharyngeal carcinoma. The patient was presented to receive laparoscopic cholecystectomy for gallbladder stone. He had been diagnosed to have nasopharyngeal cancer about 2 years ago. In operation, after sleeping, the patient was manual controlled ventilation. However, we subsequently found that his neck campaign was limited and mask ventilation was obstructed. We immediately performed oropharyngeal airway, then mask ventilation improved. Fully surface anesthesia with tetracaine atomizing to the root of tongue, larynx wall and piriform recess, the patient was endotracheal intubated with fiberoptic bronchoscope. After intubation, the patient inhaled 2.5% sevoflurane, then esmeron (50 mg) and remifentanyl (0.1 μg/kg every minute) were administrated by intravenous. After the treatment, the patient's life indexes were normal and steady. In conclusion, patients with nasopharyngeal carcinoma (NPC) after radiation therapy should be based on comprehensive evaluation of upper airway and obstructive condition before operation, then perform safe and effective tracheal intubation methods under spontaneous breathing. | Deke Li Shiying Wang Kun Chen | 2012 | The Chinese-German Journal of Clinical Oncology2012，11，11： | 0 |
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