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    题名 作者 年代 出处 被引量
1臭氧对活性污泥特性影响研究显示文摘探讨了臭氧对于污水生物处理中活性污泥特性的影响。结果显示 ,随着臭氧化的进行 ,促进了活性污泥生物量的减少 ,并有一定量的生物污泥被无机化 ,并且污泥的活性和存活性降低了。其中臭氧投加量低于 0 .1gO3 /gSS时污泥活性即大幅下降 ,而后污泥浓度才随着臭氧量的增加而显著降低。金瑞洪 NG Wun Jern 2004环境污染治理技术与设备2004,5,9:22
2Insights on the solubilization products after combined alkaline and ultrasonic pre-treatment of sewage sludge显示文摘This work provides insights on the solubilization products after a simultaneous combination of alkaline and ultrasonic(ALK + ULS) pre-treatment of sewage sludge.Soluble chemical oxygen demand(SCOD) increased from 1200 to 11,000 mg/L after such treatment. Organics with molecular weight around 5.6 k Da were solubilized because of the synergistic effect of ultrasound and alkali. Organics with molecular weight larger than300 k Da increased from 7.8% to 60%, 16% and 42.3% after ULS, ALK and ALK + ULS treatment, respectively. Excitation emission matrix fluorescence spectroscopy analysis identified soluble microbial product-like and humic acid-like matters as the main solubilization products. Sludge anaerobic biodegradability was significantly enhanced with the simultaneous application of ALK + ULS pre-treatment. ALK + ULS pre-treatment resulted in 37.8% biodegradability increase compared to the untreated sludge. This value was higher compared to the biodegradability increase induced by individual ALK pre-treatment(5.7%) or individual ULS pre-treatment(20.7%) under the same conditions applied.Xinbo Tian Chong Wang Antoine Prandota Trzcinski Leonard Lin Wun Jern Ng 2015Journal of Environmental Sciences2015,27,3:19
3Nitrous oxide emission by denitrifying phosphorus removal culture using polyhydroxyalkanoates as carbon source显示文摘Nitrous oxide(N2O) emission has been reported to be enhanced during denitrification when internally-stored compounds are used as carbon sources.However,negligible N2O emissions have been detected in the few studies where polyhydroxyalkanoates(PHA) were specifically used.This study investigated and compared the potential enhancement of N2O production,based on utilization of an internally-stored polymer and external carbon(acetate) by a denitrifying phosphorus removal culture.Results indicated that at relatively low chemical oxygen demand-to-nitrogen(COD/N) ratios,more nitrite was reduced to N2O in the presence of an external carbon source as compared to an internal carbon source(PHA).At relatively higher COD/N ratios,similar N2O reduction rates were obtained in all cases regardless of the type of carbon source available.N2O reduction rates were,however,generally higher in the presence of an internal carbon source.Results from the study imply that when the presence of an external carbon source is not sufficient to support denitrification,it is likely competitively utilized by different metabolic pathways of denitrifying polyphosphate accumulating organisms(DPAOs) and other ordinary denitrifiers.This study also reveals that the consumption of PHA is potentially the rate-limiting step for N2O reduction during denitrification.Yan Zhou Melvin Lim Soekendro Harjono Wun Jern Ng 2012Journal of Environmental Sciences2012,24,9:17
4Application of constructed wetlands for wastewater treatment in tropical and subtropical regions(2000–2013)显示文摘Constructed wetlands(CWs) have been successfully used for treating various wastewaters for decades and have been identified as a sustainable wastewater management option for developing countries. With the goal of promoting sustainable engineered systems that support human well-being but are also compatible with sustaining natural(environmental)systems, the application of CWs has become more relevant. Such application is especially significant for developing countries with tropical climates, which are very conducive to higher biological activity and productivity, resulting in higher treatment efficiencies compared to those in temperate climates. This paper therefore highlights the practice,applications, and research of treatment wetlands under tropical and subtropical conditions since 2000. In the present review, removal of biochemical oxygen demand(BOD) and total suspended solid(TSS) was shown to be very efficient and consistent across all types of treatment wetlands. Hybrid systems appeared more efficient in the removal of total suspended solid(TSS)(91.3%), chemical oxygen demand(COD)(84.3%), and nitrogen(i.e.,80.7% for ammonium(NH)4-N, 80.8% for nitrate(NO)3-N, and 75.4% for total nitrogen(TN))as compared to other wetland systems. Vertical subsurface flow(VSSF) CWs removed TSS(84.9%), BOD(87.6%), and nitrogen(i.e., 66.2% for NH4-N, 73.3% for NO3-N, and 53.3% for TN)more efficiently than horizontal subsurface flow(HSSF) CWs, while HSSF CWs(69.8%)showed better total phosphorus(TP) removal compared to VSSF CWs(60.1%). Floating treatment wetlands(FTWs) showed comparable removal efficiencies for BOD(70.7%),NH4-N(63.6%), and TP(44.8%) to free water surface(FWS) CW systems.Dong-Qing Zhang K.B.S.N.Jinadasa Richard M.Gersberg Yu Liu Soon Keat Tan Wun Jern Ng 2015Journal of Environmental Sciences2015,27,4:14
5基层医疗国际分类对城市全科医疗门诊老年患者就诊原因及服务需求的评价显示文摘目的 了解北京和天津城市全科医疗诊所中老年患者的患病情况和就诊原因 ;探索以基层医疗国际分类 (ICPC)方法客观评价居民医疗服务需求的状况。方法 采用典型抽样的方法 ,选取在 1999年 11月~ 2 0 0 0年 2月间、每个月前 2周中因不同原因到上述全科医疗门诊就诊的≥ 6 5岁的老人作为研究对象 ,共获得样本量为 2 85 9人次 ;由全科医生对其就诊情况进行记录 ,并使用基层医疗国际分类 (ICPC - 2 )对所记录的就诊原因和健康问题进行分类和编码。进而将分析结果与香港的研究结果进行比较。结果 老年人的首位就诊原因是头晕 ;就诊原因中的 4 1 6 %和健康问题 (诊断 )中的 6 0 3%属于心血管系统 ;2 4 6 %的患者患有高血压和相关疾病 ;研究地区与香港地区老年人的健康问题有所不同。结论 ICPC是研究居民就诊原因和医疗服务需求的有效而实用的工具。研究地区中老年人的主要健康问题是慢性疾患 ,特别是心血管疾病 ,此提示慢性病是目前及今后全科医疗服务的主要内容 ,而全科医生的继续教育亦应顺应患者的需求。路孝琴 贾庆春 梁万年 Wun Yuke Tsan 瓮学清 2004中国全科医学2004,7,12:7
6Absolute monocyte and lymphocyte count prognostic score for patients with gastric cancer显示文摘AIM:To measure the prognostic significance of absolute monocyte count/absolute lymphocyte count prognostic score(AMLPS) in patients with gastric cancer.METHODS:We retrospectively examined the combination of absolute monocyte count(AMC) and absolute lymphocyte count(ALC) as prognostic variables in a cohort of 299 gastric cancer patients who underwent surgical resection between 2006 and 2013 and were followed at a single institution.Both AMC and ALC were dichotomized into two groups using cut-off points determined by receiving operator characteristic curve analysis.An AMLPS was generated,which stratified patients into three risk groups:low risk(both low AMC and high ALC),intermediate risk(either high AMC or low ALC),and high risk(both high AMC and low ALC).The primary objective of the study was to validate the impact of AMLPS on both disease-free survival(DFS) and overall survival(OS),and the second objective was to assess the AMLPS as an independent prognostic factor for survival in comparison with known prognostic factors.RESULTS:Using data from the entire cohort,the most discriminative cut-off values of AMC and ALC selected on the receiver operating characteristic curve were 672.4/μL and 1734/μL for DFS and OS.AMLPS risk groups included 158(52.8%) patients in the lowrisk,128(42.8%) in the intermediate-risk,and 13(4.3%) in the high-risk group.With a median followup of 37.2 mo(range:1.7-91.4 mo),five-year DFS rates in the low-,intermediate-,and high-risk groups were 83.4%,78.7%,and 19.8%,respectively.And fiveyear OS rates in the low-,intermediate-,and high-risk groups were 89.3%,81.1%,and 14.4%,respectively.On multivariate analysis performed with patient- and tumor-related factors,we identified AMLPS,age,and pathologic tumor-node-metastasis stage as the most valuable prognostic factors impacting DFS and OS.CONCLUSION:AMLPS identified patients with a poor DFS and OS,and it was independent of age,pathologic stage,and various inflammatory markers.Wan Kyu Eo Da Wun Jeong Hye Jung Chang Kyu Yeoun Won Sung Il Choi Se Hyun Kim Sung Wook Chun Young Lim Oh Tae Hwa Lee Young Ok Kim Ki Hyung Kim Yong Il Ji Ari Kim Heung Yeol Kim 2015World Journal of Gastroenterology2015,21,9:6
7Face Masks in the New COVID-19 Normal: Materials, Testing,and Perspectives显示文摘The increasing prevalence of infectious diseases in recent decades has posed a serious threat to public health.Routes of transmission differ,but the respiratory droplet or airborne route has the greatest potential to disrupt social intercourse,while being amenable to prevention by the humble facemask.Different types of masks give different levels of protection to the user.The ongoing COVID-19 pandemic has even resulted in a global shortage of face masks and the raw materials that go into them,driving individuals to self-produce masks from household items.At the same time,research has been accelerated towards improving the quality and performance of face masks,e.g.,by introducing properties such as antimicrobial activity and superhydrophobicity.This review will cover mask-wearing from the public health perspective,the technical details of commercial and home-made masks,and recent advances in mask engineering,disinfection,and materials and discuss the sustainability of mask-wearing and mask production into the future.Ming Hui Chua Weiren Cheng Shermin Simin Goh Junhua Kong Bing Li Jason Y.CLim Lu Mao Suxi Wang Kun Xue Le Yang Enyi Ye Kangyi Zhang Wun Chet Davy Cheong Beng Hoon Tan Zibiao Li Ban Hock Tan Xian Jun Loh 2020Research2020,,1:5
8Determination of the archaeal and bacterial communities in two-phase and single-stage anaerobic systems by 454 pyrosequencing显示文摘2-Phase anaerobic digestion(AD), where the acidogenic phase was operated at 2 day hydraulic retention time(HRT) and the methanogenic phase at 10 days HRT, had been evaluated to determine if it could provide higher organic reduction and methane production than the conventional single-stage AD(also operated at 12 days HRT). 454 pyrosequencing was performed to determine and compare the microbial communities. The acidogenic reactor of the 2-phase system yielded a unique bacterial community of the lowest richness and diversity, while bacterial profiles of the methanogenic reactor closely followed the single-stage reactor. All reactors were predominated by hydrogenotrophic methanogens, mainly Methanolinea. Unusually, the acidogenic reactor contributed up to 24%of total methane production in the 2-phase system. This could be explained by the presence of Methanosarcina and Methanobrevibacter, and their activities could also help regulate reactor alkalinity during high loading conditions through carbon dioxide production. The enrichment of hydrolytic and acidogenic Porphyromonadaceae, Prevotellaceae, Ruminococcaceae and unclassified Bacteroidetes in the acidogenic reactor would have contributed to the improved sludge volatile solids degradation, and ultimately the overall 2-phase system's performance. Syntrophic acetogenic microorganisms were absent in the acidogenic reactor but present in the downstream methanogenic reactor, indicating the retention of various metabolic pathways also found in a single-stage system. The determination of key microorganisms further expands our understanding of the complex biological functions in AD process.Yogananda Maspolim Yan Zhou Chenghong Guo Keke Xiao Wun Jern Ng 2015Journal of Environmental Sciences2015,27,10:5
9城市社区卫生服务站老年患者就诊原因及患病状况研究显示文摘路孝琴 贾庆春 梁万年 Wun Yuke Tsan 彭晓霞 2004中华全科医师杂志2004,3,5:5
10Impact of ozone assisted ultrasonication pre-treatment on anaerobic digestibility of sewage sludge显示文摘Impact of ultrasonication(ULS) and ultrasonication–ozonation(ULS-Ozone) pre-treatment on the anaerobic digestibility of sewage sludge was investigated with semi-continuous anaerobic reactors at solid retention time(SRT) of 10 and 20 days. The control, ULS and ULS-Ozone reactors produced 256, 309 and 348 m L biogas/g CODfedand the volatile solid(VS) removals were 35.6%, 38.3% and 42.1%, respectively at SRT of 10 days. At SRT of20 days, the biogas yields reached 313, 337 and 393 m L biogas/g CODfedand the VS removal rates were 37.3%, 40.9% and 45.3% in the control, ULS and ULS-Ozone reactors, respectively.ULS-Ozone pre-treatment increased the residual organic amount in the digested sludge.These soluble residual organics were found to contain macromolecules with molecular weights(MW) larger than 500 k Da and smaller polymeric products with MW around 19.4and 7.7 k Da. These compounds were further characterized to be humic acid-like substances with fluorescent spectroscopy analysis.Xinbo Tian Antoine Prandota Trzcinski Li Leonard Lin Wun Jern Ng 2015Journal of Environmental Sciences2015,27,7:5
11AS1411 aptamer-conjugated Gd2O3:Eu nanoparticles for target-specific computed tomography/magnetic resonance/fluorescence molecular imaging显示文摘Tsungrong Kuo Weiyun Lai Chenghung Li Yanjhan Wun Huancheng Chang Jinnshiun Chen Panchyr Yang Chiachun Chen 2014Nano Research2014,7,5:3
12Photocatalytic enhancement of Mg-doped ZnO nanocrystals hybridized with reduced graphene oxide sheets显示文摘Hybridization of Mg-doped ZnO and reduced graphene oxide(MZO–RGO) were synthesized through one pot reaction process. Crystallization of MZO–RGO upon thermal decomposition of the stearate precursors was investigated by X-ray diffraction technique. XRD studies point toward the particles size with 10–15 nm,which was confirmed by transmittance electronic microscopy,and also indicates that graphene oxide has been directly reduced into its reduced state graphene during the synthesis. Graphene hybridized MZO photocatalyst showed enhanced catalytic activity for the degradation of methylene blue(MB). The degree of photocatalytic activity enhancement strongly depended both on the coverage of graphene on the surface of MZO nanoparticles and the Mg doping concentration. The sample of 2 wt% graphene hybridized 5 at% Mg-doped ZnO showed the highest photocatalytic activity,which remained good photocatalytic activity after nine cycling runs.Linqin Wang Yan Wun Fangyuan Chen Xiang Yang 2014Progress in Natural Science:Materials International2014,24,1:3
13Suppression of laser-induced choroidal neovascularization by intravitreal injection of tristetraprolin显示文摘AIM: To examine the effect of intravitreal adenoviral vector-mediated tristetraprolin(Ad-TTP) on VEGF m RNA expression in a rat model of laser-induced choroidal neovascularization.METHODS: Ad-TTP was prepared using a commercial kit. Retinal laser-induced photocoagulation(10 spots per eye) was performed on rats in this experimental choroidal neovascularization(CNV) model. Rats were divided into four groups: control(single intravitreal injection of balanced salt solution, n =10), laser-induced CNV(photocoagulation only, n =20), laser-induced CNV plus Ad-TTP injection(photocoagulation plus a single intravitreal Ad-TTP injection, n =20) and Ad-TTP injection only(n =10). Changes in choroidal morphology were evaluated in ten rats in the laser only and the laser plus Ad-TTP groups. Two weeks after laser injury, the size of CNV was calculated by perfusion with high-molecular-weight fluorescein isothiocyanate(FITC)-dextran. VEGF m RNA expression in retina-choroid tissue from ten rats in each group was measured by reverse transcription polymerase chain reaction(RT-PCR). RESULTS: Two weeks after treatment, the area of laser-induced CNV was reduced by approximately 60% in the rats given the Ad-TTP injection compared with that in the laser-only group. There was a tendency toward decreased VEGF m RNA expression in the Ad-TTP injection groups.CONCLUSION: A single intravitreal injection of Ad-TTP significantly suppressed CNV size in this experimental laser-induced CNV model. Ad-TTP injection also decreased VEGF m RNA expression compared with that inthe laser-induced CNV group. The present study is meaningful as the first study to investigate the effect of tristetraprolin delivered via intravitreal injection.Yong Wun Cho Yong Seop Han In Young Chung Seong Jae Kim Seong Wook Seo Ji Myong Yoo Jong Moon Park 2014International Journal of Ophthalmology(English edition)2014,7,6:2
14Macrophage Migration Inhibitory Factor Is an Important Mediator in the Pathogenesis of Gastric Inflammation in Rats显示文摘Xiao Ru Huang Connie Wun Chun Hui Yong-Xiong Chen Benjamin Chun Yu Wong Peter C.W. Fung Christine Metz Chi Hin Cho Wai Mo Hui Richard Bucala Shiu-Kum Lam Hui Y. Lan 2001Gastroenterology2001,,3:2
15Effect of intensive lipid lowering with atorvastatin on cardiovascular outcomes in coronary heart disease patients with mild-to-moderate baseline elevations in alanine aminotransferase levels显示文摘Matti J. Tikkanen Rana Fayyad Ole Faergeman Anders G. Olsson Chuan-Chuan Wun Rachel Laskey John J. Kastelein Ingar Holme Terje R. Pedersen 2013International Journal of Cardiology2013,,:2
16Diagnosis and staging of primary ovarian cancer: Correlation between PET/CT, Doppler US, and CT or MRI显示文摘Eun Ji Nam Mi Jin Yun Young Taik Oh Jae Wook Kim Jae Hoon Kim Sunghoon Kim Yong Wook Jung Sang Wun Kim Young Tae Kim 2009Gynecologic Oncology2009,,:2
17Studies on preparation and absolute bioavailability of a self- emulsifying system containing puerarin显示文摘Quan DQ Xu GX Wun XG 2007Chem Pharm Bull2007,55,6:1
18Epidemiology of venous thromboembolism in 9489 patients with malignant glioma显示文摘Semrad TJ O'Donnell R Wun T 0,,04:1
19Distal foot coverage with reverse dorsal pedalneurocutaneous flaps显示文摘Xu Y Zhu Y WuN 0,,:1
20Rationale and design of the avoiding cardiovascular events through combination therapy in patients living with systolic hypertension (ACCOMPLISH) trial - The first randomized controlled trial to compare the clinical outcome effects of first-line combination therapies in hypertension显示文摘Jamerson KA Bakris GL Wun CC 2004Am J Hypertens2004,17,9:1
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