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858篇 您的检索式:作者名="RAMIREZ C C"
    题名 作者 年代 出处 被引量
1Use of antibiotics in broiler production:Global impacts and alternatives显示文摘Antibiotics are used to fight bacterial infections.However, a selective pressure gave rise to bacteria resistant to antibiotics.This leaves scientists worried about the danger to human and animal health.Some strategies can be borrowed to reduce the use of antibiotics in chicken farms.Much research has been carried out to look for natural agents with similar beneficial effects of growth promoters.The aim of these alternatives is to maintain a low mortality rate, a good level of animal yield while preserving environment and consumer health.Among these, the most popular are probiotics, prebiotics, enzymes,organic acids, immunostimulants, bacteriocins, bacteriophages, phytogenic feed additives, phytoncides,nanoparticles and essential oils.Youcef Mehdi Marie-Pierre Létourneau-Montminy Marie-Lou Gaucher Younes Chorfi Gayatri Suresh Tarek Rouissi Satinder Kaur Brar Caroline Cté Antonio Avalos Ramirez Stéphane Godbout 2018Animal Nutrition2018,,2:19
2气象卫星云图的多分辨小波分解及人工神经网络降水估计研究显示文摘采用多分辨小波分析对卫星图象进行预处理 ,在保留其特征信息的同时 ,减小了数据量 ,改善了神经网络训练过程的收敛性能 ,提高了处理速度。采用这一方法根据 GOES- 8的红外亮温图象和气象雷达资料对巴西圣保罗州中部的降水量估计进行了试验 ,取得了良好的效果。李伟钢 Maria C V Ramirez Nelson J Ferreira 石立华 Leonardo D de A Sá 2000南京气象学院学报2000,23,2:13
3Quality monitoring in colonoscopy: Time to act显示文摘Colonoscopy is the gold standard test for colorectal cancer screening. The primary advantage of colonoscopy as opposed to other screening modalities is the ability to provide therapy by removal of precancerous lesions at the time of detection. However, colonoscopy may miss clinically important neoplastic polyps. The value of colonoscopy in reducing incidence of colorectal cancer is dependent on many factors including, the patient, provider, and facility level. A high quality examination includes adequate bowel preparation, optimal colonoscopy technique, meticulous inspection during withdrawal, identification of subtle flat lesions, and complete polypectomy. Considerable variation among institutions and endoscopists has been reported in the literature. In attempt to diminish this disparity, various approaches have been advocated to improve the quality of colonoscopy. The overall impact of these interventions is not yet well defined. Implementing optimal education and training and subsequently analyzing the impact of these endeavors in improvement of quality will be essential to augment the utility of colonoscopy for the prevention of colorectal cancer.Mary A Atia Francisco C Ramirez Suryakanth R Gurudu 2015World Journal of Gastrointestinal Endoscopy2015,7,4:3
4Endoscopic resection of an ampullary carcinoid presenting with upper gastrointestinal bleeding:A case report and review of the literature显示文摘Ampullary carcinoid is a rare tumor that can present with gastrointestinal bleeding, obstructive jaundice or pancreatitis. Some of these tumors are associated with Von Recklinghausen disease. The usual surgical options are a biliary-enteric anastomosis, Whipple procedure or rarely a local resection. The mean survival does not appear to be much different after a pancreaticoduodenectomy versus local surgical excision. We report a very rare case of a non-metastatic ampullary carcinoid causing upper gastrointestinal bleeding, which was managed by endoscopic ampullectomy.Nooman Gilani Francisco C Ramirez 2007World Journal of Gastroenterology2007,13,8:3
5Prevalence of Barrett's esophagus in patients with moderate to severe erosive esophagitis显示文摘AIM: To investigate the proportion of patients with moderate-severe erosive esophagitis (EE) who will have Barrett's esophagus (BE) after healing of inflammation. METHODS: Patients with EE of Los Angeles (LA) class B, C and D who underwent follow-up endoscopy documenting complete mucosal healing. RESULTS: A total of 86/169 patients were suspected of having BE (38 before healing and 48 after healing of EE) and, 46/86 eventually had the histological confirmation. At index esophago-gastro-duodenoscopy (EGD), BE was suspected in 38/169 (22%), and ultimately, histologically confirmed in 20 of these. In 11 patients where biopsies were performed in the presence of inflammation, BE was detected in 2 and missed in 5 (including 2 dysplasias). In 131/169 patients (77.5%), BE was not suspected at index EGD. After healing of EE though, 48 patients had suspicion of BE who underwent biopsies, and in 26 of these histology was positive for BE. The length of inflammation had a linear correlation with the length of BE (P = 0.01). Out of multiple variables to predict BE, only the suspicion at index endoscopy was statistically significant (P = 0.01). CONCLUSION: BE was seen in 46/169 (27%) patients with EE of LA class B, C and D. The length of EE can predict the length of underlying BE segment.Even when suspected, BE and associated dysplasia can be missed in the presence of inflammation; therefore, repeat evaluation should be considered after complete healing of esophagitis.Nooman Gilani Richard D Gerkin Francisco C Ramirez Shahina Hakim Adam C Randolph 2008World Journal of Gastroenterology2008,14,22:2
6Polyp detection rates using magnification with narrow band imaging and white light显示文摘AIM: To compare the yield of adenomas between narrow band imaging and white light when using high definition/magnification. METHODS: This prospective, non-randomized comparative study was performed at the endoscopy unit of veteran affairs medical center in Phoenix, Arizona. Consecutive patients undergoing first average risk colorectal cancer screening colonoscopy were selected. Two experienced gastroenterologists performed all the procedures that were blinded to each other's findings. Demographic details were recorded. Data are presented as mean ± SEM. Proportional data were compared using the χ2 test and means were compared using the Student's t test. Tandem colonoscopy was performed in a sequential and segmental fashion using one of 3 strategies: white light followed by narrow band imaging [Group A: white light(WL) → narrow band imaging(NBI)]; narrow band imaging followed by white light(Group B: NBI → WL) and, white light followed by white light(Group C: WL → WL). Detection rate of missed polyps and adenomas were evaluated in all three groups. RESULTS: Three hundred patients were studied(100 in each Group). Although the total time for the colonoscopy was similar in the 3 groups(23.8 ± 0.7, 22.2 ± 0.5 and 24.1 ± 0.7 min for Groups A, B and C, respectively), it reached statistical significance between Groups B and C(P < 0.05). The cecal intubation time in Groups B and C was longer than for Group A(6.5 ± 0.4 min and 6.5 ± 0.4 min vs 4.9 ± 0.3 min; P < 0.05). The withdrawal time for Groups A and C was longer than Group B(18.9 ± 0.7 min and 17.6 ± 0.6min vs 15.7 ± 0.4 min; P < 0.05). Overall miss rate for polyps and adenomas detected in three groups during the second look was 18% and 17%, respectively(P = NS). Detection rate for polyps and adenomas after first look with white light was similar irrespective of the light used during the second look(WL → WL: 13.7% for polyps, 12.6% for adenomas; WL → NBI: 14.2% for polyps, 11.3% for adenomas). Miss rate of polyps and adenomas however was significantly higher when NBI was used first(29.3% and 30.3%, respectively; P < 0.05). Most missed adenomas were ≤ 5 mm in size. There was only one advanced neoplasia(defined by size only) missed during the first look. CONCLUSION: Our data suggest that the tandem nature of the procedure rather than the optical techniques was associated with the detection of additional polyps' and adenomas.Nooman Gilani Sally Stipho James D Panetta Sorin Petre Michele A Young Francisco C Ramirez 2015World Journal of Gastrointestinal Endoscopy2015,7,5:2
7Benign tumors of the parotid gland 显示文摘Pons Rocher F Lopez Molla C Ferrer Ramirez M J 2004An Otorrinolaringol Ibero Am2004,31,5:1
8A randomized trial comparing platinum-based chemotherapy followed by radiotherapy vs radiotherapy alone in patients with locally advanced cervical cancer显示文摘Tattersall M Ramirez C Coppleson M 1992Int J Gynecol Cancer1992,2,10:1
9Detection of immunoglobulin M antibodies to P35 antigen of Toxoplasma gondii for serodiagnosis of recently acquired infection in pregnant women 显示文摘Suzuki Y Ramirez R Press C 2000J Clin Microbiol2000,38,:1
10Examination of binary alloy free dendritic growth theories with a Phase-field model显示文摘Ramirez J C Beckermann C 2005Acta Materialia2005,,53:1
11A randomized, prospective, parallel group study comparing the Harmonic Scalpel to electrocautery in thyroidectomy显示文摘Cord6n C Fajardo R Ramirez J 2005Surgery2005,137,3:1
12Molecular biology of tenuivimse, a re- markable group of plant viruses 显示文摘Ramirez B C Haenni A L 1994Journal of General Virology1994,75,:1
13An Effective Subband OSF-based VAD with Noise Reduction for Robust Speech Recognition显示文摘RAMIREZ J SEGURA J C BENITEZ C 2005IEEE Transaction on Speech and Audio Processing2005,13,6:1
14Resolution of 3-α- naphthoxy-l,2-propanediol using candida antarctica lipase 显示文摘Salazar L Bermudez JL Ramirez C 1999Tetrahedron: Asymmetry1999,10,:1
15High-resolution electron microscopy study of phosphorus-containing MoS2/ Al2O3 hydrotreating catalysts显示文摘RAMIREZ J CASTANO V N LECLERCQ C LOPEZ AGUDO A 1992Appl Catal A1992,83,2:1
16A new voice activity deteetor using subband order-statistics filters for robust speech rec- ognition显示文摘Ramirez J Segura J C Benitez C 2004Aeousties Speeeh and Signal Processing2004,52,1:1
17Toll LikeReceptor-9 Dependent Immune Activation by Unmethylated CpG Motifs in Aspergillus fumigatus DNA显示文摘Ramirez Z G Specht O C Wang J P 2008Infect Immunol2008,76,5:1
18Maternal corticotropin-releasing hormone is increused with impending preterm birth显示文摘Korebrits C Ramirez MM Watson L 1998J Chin Endocrinol Metal1998,83,:1
19Velopharyngeal surgery:a prospective randomized study of pharyngeal flaps and sphincter pharyngoplasties显示文摘Ysunza A Pamplona C Ramirez E 2002Plast Reconstr Surg2002,110,6:1
20First field trial of a transmissible recombinant vae cine against myxomatosis and rabbit baemorrhagic disease显示文摘TORRES J M SANCHEZ C RAMIREZ M A 2001Vaccine2001,19,31:1
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