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| 1 | Determination of a suitable set of loss models for centrifugal compressor performance prediction显示文摘Performance prediction in preliminary design stages of several turbomachinery components is a critical task in order to bring the design processes of these devices to a successful conclusion. In this paper, a review and analysis of the major loss mechanisms and loss models, used to determine the efficiency of a single stage centrifugal compressor, and a subsequent examination to determine an appropriate loss correlation set for estimating the isentropic efficiency in preliminary design stages of centrifugal compressors, were developed. Several semi-empirical correlations,commonly used to predict the efficiency of centrifugal compressors, were implemented in FORTRAN code and then were compared with experimental results in order to establish a loss correlation set to determine, with good approximation, the isentropic efficiency of single stage compressor.The aim of this study is to provide a suitable loss correlation set for determining the isentropic efficiency of a single stage centrifugal compressor, because, with a large amount of loss mechanisms and correlations available in the literature, it is difficult to ascertain how many and which correlations to employ for the correct prediction of the efficiency in the preliminary stage design of a centrifugal compressor. As a result of this study, a set of correlations composed by nine loss mechanisms for single stage centrifugal compressors, conformed by a rotor and a diffuser, are specified. | Elkin I.GUTIERREZ VELASQUEZ | 2017 | Chinese Journal of Aeronautics2017，30，5： | 3 |
| 2 | 基本药物今昔25年显示文摘 | Jonathan D.Quick Hans V. Hogerzeil German Velasquez Lembit Rago 卢军 | 2003 | 中国循证医学杂志2003，3，2： | 2 |
| 3 | 蚯蚓对废纸屑再利用及养分贫瘠土壤综合质量的影响显示文摘办公废纸屑作为常见有机废弃物,由于体积小且转化为再生纸成本高,因而再利用很难。但其含有大量有机碳(特别是纤维素)可能有助于退化土壤修复。蚯蚓对土壤有机质分解和其他土壤功能有重要影响,办公废纸屑和蚯蚓共同作用如何影响养分贫瘠土壤质量至今未知。研究以赤子爱胜蚓为接种蚯蚓,将办公废纸屑添加到养分贫瘠土壤中,分别设置纯土壤培养为对照组(S)、单独添加废纸屑(SP)、单独接种赤子爱胜蚓(SE)和添加废纸屑并接种赤子爱胜蚓的处理(SPE),比较培养90 d后各处理理化指标(pH、有机碳、全氮、全磷、全钾、碱解氮、速效磷、速效钾、交换性阳离子钾、钠、钙、镁等)、微生物磷脂脂肪酸(PLFAs)总含量和微生物结构的差异,在此基础上综合评价土壤质量,阐明废纸屑和赤子爱胜蚓在养分贫瘠土壤改良修复中的作用。结果显示:SPE处理较SP处理显著提高废纸屑的分解率89.48%。与对照相比,SP处理能够显著提高土壤pH值2.94个单位,SPE处理能够使其维持在中性水平;前者显著提高土壤有机碳(SOC)125.76%,交换性钠钙镁(Na_(Ex)、Ca_(Ex)、Mg_(Ex))154.00%、65.28%、55.25%,后者则明显增加SOC含量522.88%,全氮(TN)1365.29%,全磷(TP)36.26%,速效钾(AK)42.84%,交换性钾(K_(Ex))、Na_(Ex)、Ca_(Ex)、Mg_(Ex) 42.69%、160.35%、386.00%、110.36%。与对照S相比,SP和SPE处理均能显著提高真菌、放线菌、革兰氏阳性菌、革兰氏阴性菌、一般细菌和总PLFAs含量以及真菌/细菌,显著降低了革兰氏阳性菌/革兰氏阴性菌(P<0.05)。主成分分析中S、SP、SPE处理土壤综合质量差异显著(P<0.05),不同处理的质量指数呈现废纸屑+蚯蚓处理>废纸屑处理>对照,且土壤质量与微生物结构及生物量的关系更为密切。综上所述,在养分贫瘠土壤中赤子爱胜蚓堆肥废纸屑可以通过调节微生物群落结构,改变土壤pH和养分含量来提高土壤综合质量。这为废纸屑的资源化利用和养分贫瘠土壤的改良修复提供科学参考。 | 张孟豪 吴玲 陈静 潘伯桂 刘科学 Velasquez Elena Lavelle Patrick 戴军 张池 | 2022 | 生态学报2022，42，12： | 2 |
| 4 | Combination of fludarabine and mitoxantrone in untreated stages Ⅲ and Ⅳ low-grade lymphoma:S9501显示文摘 | Velasquez WS Lew D Grogan TM | | 0，，10： | 2 |
| 5 | Automated Deep Learning Empowered Breast Cancer Diagnosis UsingBiomedical Mammogram Images显示文摘Biomedical image processing is a hot research topic which helps to majorly assist the disease diagnostic process.At the same time,breast cancer becomes the deadliest disease among women and can be detected by the use of different imaging techniques.Digital mammograms can be used for the earlier identification and diagnostic of breast cancer to minimize the death rate.But the proper identification of breast cancer has mainly relied on the mammography findings and results to increased false positives.For resolving the issues of false positives of breast cancer diagnosis,this paper presents an automated deep learning based breast cancer diagnosis(ADL-BCD)model using digital mammograms.The goal of the ADL-BCD technique is to properly detect the existence of breast lesions using digital mammograms.The proposed model involves Gaussian filter based pre-processing and Tsallis entropy based image segmentation.In addition,Deep Convolutional Neural Network based Residual Network(ResNet 34)is applied for feature extraction purposes.Specifically,a hyper parameter tuning process using chimp optimization algorithm(COA)is applied to tune the parameters involved in ResNet 34 model.The wavelet neural network(WNN)is used for the classification of digital mammograms for the detection of breast cancer.The ADL-BCD method is evaluated using a benchmark dataset and the results are analyzed under several performance measures.The simulation outcome indicated that the ADL-BCD model outperforms the state of art methods in terms of different measures. | JoséEscorcia-Gutierrez Romany F.Mansour Kelvin Belen Javier Jiménez-Cabas Meglys Pérez Natasha Madera Kevin Velasquez | 2022 | Computers, Materials & Continua2022，，6： | 2 |
| 6 | A chemical, morphological, and electrochemical (XPS, SEM/EDX, CV, and EIS) analysis of electrochemically modified electrode surfaces of natural chalcopyrite (CuFeS2) and pyrite (FeS2) in alkaline solutions显示文摘 | VELASQUEZ P LEINEN D PASCUAL J RAMOS- BARRADO J R GREZ P GOMEZ H SCHREBLER R DEL RiO R CORDOVA R | 2005 | Journal of Physical Chemistry B2005，109，1： | 1 |
| 7 | Influence of thermal treatment on the ' in vitro' bioactivity of wollastonite materials显示文摘 | Miguel A de la Casa-Lillo Pablo Velasquez Piedad N De Aza | 2011 | Journal of Materials Science-Materials in Medicine2011，22，4： | 1 |
| 8 | Thickened pituitary stalk on magnetic resonance imaging in children with central diabetes insipidus显示文摘 | Leger J Velasquez A Garel C | 1999 | J Clin Endocrinol Metab1999，84，6： | 1 |
| 9 | Beneficial role of dietary phytoestrogens in obesity and diabetes显示文摘 | Bhathena S J Velasquez M T | 2002 | The Ameri- can Journal of Clinical Nutrition2002，76，6： | 1 |
| 10 | Applying team-based learning in primary care residency programs to increase patient alcohol screenings and brief interventions显示文摘 | Shellenberger S Seale JP Harris DL Johnson JA Dedrill CL Velasquez MM | 2009 | Aead Med2009，84，3： | 1 |
| 11 | Effect of negative pressure breathing on lung mechanics and venous admixture显示文摘 | Velasquez T Farhile | 1964 | J Appl physiol1964，19，： | 1 |
| 12 | Effect of electron beam irradiation on poultry meat safety and quality显示文摘 | LEWIS S J VELASQUEZ A CUPPETT S L | 2002 | J of Poultry Science2002，81，6： | 1 |
| 13 | ESHAP-an effective chemotherapy regimin in refractory and relapsing lymphoma: a 4-year follow-up study显示文摘 | McLaughlin P Tucker S | 1994 | J Clin Oncol1994，12，6： | 1 |
| 14 | Phthirus pubis from human eye lashes in philippines 显示文摘 | Velasquez CC | 1968 | J Parasitol1968，54，6： | 1 |
| 15 | Effective salvage therapy for lymphoma with cisplatin in combination with high-dose Ara-C and dexamethasone (DHAP) 显示文摘 | Velasquez W S Cabanillas F Salvardor P | 1988 | Blood1988，71，1： | 1 |
| 16 | A cytogenetic study in 609 abortions显示文摘 | Be CR Velasquez PM Youlton RR | | 0，，： | 1 |
| 17 | Elevation of endothelial microparticles, platelets, and leukocyte activation in patients with venous thromboembolism 显示文摘 | Chirinos JA Heresi GA Velasquez H | 2005 | J Am Coll Cardiol2005，45，9： | 1 |
| 18 | Risk factors associated to retinopathy of prematurity 显示文摘 | Zamorano Jimenez CA Salgado Valladares M Velasquez Vaiassi B | 2012 | Gac MedMex2012，148，1： | 1 |
| 19 | Bradford reactive soil proteins and aggregate stability under abandoned versus tilled olive groves in a semi arid calcisol 显示文摘 | Hontoria C Velasquez R Benito M | 2009 | Soil Biology & Biochemistry2009，41，7： | 1 |
| 20 | A cytogenetic study in 609 a- bortions显示文摘 | Be CR Velasquez PM Youlton RR | 1997 | Rev Med Chile1997，125，3： | 1 |
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