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Methane oxidation and attenuation of sulphur compounds in landfill top cover systems: Lab-scale tests

Journal of Environmental Sciences 2018年第3期30卷 317-326页

作者： roberto raga Alberto Pivato Maria Cristina Lavagnolo Laura Megido Raffaello Cossu DII-Department of Industrial Engineering University of Padova Department of Chemical and Environmental Engineering Polytechnic School of Engineering Gijón Campus University of Oviedo

In this study,a top cover system is investigated as a control for emissions during the aftercare of new landfills and for old landfills where biogas energy production might not be *** materials were studied as landfill cover system in lab-scale columns：mechanical–biological pretreated municipal solid waste（MBP）;mechanical–biological pretreated biowaste（PB）;fine（PBSf）and coarse（PBSc）mechanical–biological pretreated mixtures of biowaste and sewage sludge,and natural soil（NS）.The effectiveness of these materials in removing methane and sulphur compounds from a gas stream was tested,even coupled with activated carbon *** of CO2,CH4,O2,N2,H2S and mercaptans were analysed at different depths along the *** degradation was assessed using mass balance and the results were expressed in terms of methane oxidation rate（MOR）.The highest maximum and mean MOR were observed for MBP（17.2 g CH4/m^2/hr and 10.3 g CH4/m^2/hr,respectively）.Similar values were obtained with PB and *** lowest values of MOR were obtained for NS（6.7 g CH4/m^2/hr）and PBSf（3.6 g CH4/m^2/hr）,which may be due to their low organic content and void index,*** membranes with high load capacity did not seem to have an influence on the methane oxidation process：MBP coupled with 220 g/m^2and 360 g/m^2membranes gave maximum MOR of 16.5 g CH4/m^2/hr and 17.4 g CH4/m^2/hr,*** carbon membranes proved to be very effective on H2S ***,carbonyl sulphide,ethyl mercaptan and isopropyl mercaptan seemed to be easily absorbed by the filling materials.

关键词： Emission reduction Greenhouse gas emissionLandfill Methane oxidation H2S Soil cover

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Effectiveness of aerobic pretreatment of municipal solid waste for accelerating biogas generation during simulated landfilling

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Frontiers of Environmental Science & Engineering 2018年第3期12卷 79-87页

作者： Munawar Ali Junli Zhang roberto raga Maria Cristina Lavagnolo Alberto Pivato Xu Wang Yuanyuan Zhang Raffaello Cossu Dongbei Yue School of Environment Tsinghua University Beijing 100084 China Key Laboratory for Solid Waste Management and Environment Safety (Tsinghua University) Ministry of Education of China Beijing 100084 China Solid waste and Chemical Management Centre Ministry of Environmental Protection Beijing 100029 China DII Department of Industrial Engineering University of Padova Via Marzolo 9 35131 Padova Italy

This study evaluates the effectiveness of aerobic pretreatment of municipal solid waste （MSW） on reducing lag phase and accelerating biogas generation. Aerobic pretreatment degree （APD） was determined on the basis of reduction in volatile solids （VS） on a wet weight basis. In this study, intermittent aeration （IA） was applied to three reactors as a main aeration mode; since a single reactor was operated under continuous aeration mode. However, the purpose of the experiment was to reduce VS content of waste, irrespective of the comparison between aeration modes. Fresh MSW was first pretreated aerobically with different aeration rates （10, 40, 60 and 85 L/min/m3） for the period of 30- 50 days, resulting in VS-loss equivalent to 20%, 27%, 38% and 53q4 on w/w basis for the wastes AI, A2, A3 and A4, respectively. The cumulative biogas production, calculated based on the modified Gompertz model were 384, 195, 353,215, and 114 L/kg VS for the wastes A0, A1, A2, A3 and A4, respectively. Untreated waste （A0） showed a long lag phase; whereas the lag phases of pretreated MSW were reduced by more than 90e/L Aerobically pretreated wastes reached stable methanogenic phase within 41 days compared to 418 days for untreated waste. The waste mass decreased by about 8% to 27% compared to untreated MSW, indicative that even more MSW could be placed in the same landfill. The study confirmed the effectiveness of aerobic pretreatment of MSW prior to landfilling on reducing lag phase and accelerating biogas generation.

关键词： Municipal solid waste (MSW)Aerobic pretreatment degree (APD)Volatile solids (VS)Intermittent aeration (IA)Landfill gasLandfilling

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Assessment of Physical Characteristics of Bugang River Watershed in Pandan, Antique, Philippines

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Open Journal of Ecology 2022年第6期12卷 360-376页

作者： Melba L. raga-as roberto L. Saladar Jerson C. Calaguio Raffy L. Tano Glaiza Mae C. Unlayao College of Agriculture Forestry and Environmental Science Aklan State University (Banga Campus) Aklan Philippines

Sustainable and appropriate watershed management strategies require the determination of biophysical information which includes the floral characteristics of the watershed. This study was conducted to characterize the floral composition of the Bugang River watershed. Data gathering was done by conducting an inventory for trees, palms, and bamboos with Quadrant Sampling using a stratified random sampling method in the forested area of the watershed with 50 m × 20 m sampling plots. Floral species were identified and classified through local experts, published books, journals, the internet, and available references. A total of 60 species belonging to 31 families and 52 genera were found using this method. Gogo (Entada phaseoloides) had the highest number of species with 222 or 14% of the total species. Trees with dbh 10 cm and above have a total estimated volume of 102.31 m3. The average diameter and average height of species decrease as the elevation increases. The result showed that the Bugang River watershed has a diverse floral composition, with vertical stratification and a dense canopy. The advocacy and awareness campaign should be done and strengthen the protection and conservation efforts of concerned agencies for the sustainability of the watershed.

关键词： Barangay Pandan Floral Characteristics Watershed Stratification Antique Philippines

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Does Adult Intestinal Invagination Need Surgery? Report of a Case and Review of Literature

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International Journal of Clinical Medicine 2011年第4期2卷 456-458页

作者： Carlos Leon-Espinoza Maria Gomez-Mateo Fernando Lopez-Mozos roberto Marti-Obiol Juan raga-Vazquez Joaquin Ortega-Serrano 不详

Benign intestinal tumors are the most frequent cause of small bowel intussusception in adults. This report presents a case of a 67-year-old male with abdominal pain, leukocytosis and C-reactive protein elevation. After ultrasonography and double contrast CT-scan consistent with ileal intussusception patient underwent laparoscopy, which confirmed diagnose. Intestinal resection and anastomosis were performed via minilaparotomy. Further histological study showed a fibroid inflammatory polyp or Vanek’s tumor as intussusception’s lead point.

关键词： Invagination Intussusception Vanek

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兰屿树杞(Ardisia cf. elliptica)三萜及其抑制鸭(Anas platyrynchos L.)绒毛尿囊膜血管生成作用(英文)

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中国天然药物 2013年第2期11卷 128-138页

作者： Dennis D. raga Annabelle A. Herrera Consolacion Y. ragasa Biology Department School of Science and Engineering Ateneo de Manila University Institute of Biology University of the Philippines Chemistry Department and Center for Natural Sciences and Ecological Research De La Salle University

The dichloromethane extract of the air-dried leaves of Ardisia ***(subgenus Tinus)afforded a mixture of bauerenol(1a),α-amyrin(1b)andβ-amyrin(1c).Their structures were identified by NMR *** of the triterpenes (1a-1c)at ratios of 2:2:1,2:2:3 and 1:1:1 were tested for their angio-suppressive effects on duck chorioallantoic membrane (CAM).All three ratios were found to be effective in restricting inter-capillary length,while 1a-1c(2:2:1)was most effective in reducing branch point density with 100%CAM viability and embryo survivability,suggesting a high impact angio-suppressive potential of 1a-1c(2:2:1).

关键词： Ardisia cf.elliptica(subgenus Tinus) Myrsinaceae Bauerenol α-Amyrin β-Amyrin Angio-suppressive

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Role of sex on psychological distress,quality of life,and coping of patients with advanced colorectal and non-colorectal cancer

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World Journal of Gastrointestinal Oncology 2022年第10期14卷 2025-2037页

作者： Vilma Pacheco-Barcia David Gomez Berta Obispo Luka Mihic Gongora Raquel Hernandez San Gil Patricia Cruz-Castellanos Mireia Gil-raga Vicente Villalba Ismael Ghanem Paula Jimenez-Fonseca Caterina Calderon Department of Medical Oncology School of MedicineAlcala University(UAH)Hospital Central de la Defensa Gómez UllaMadrid 28047Spain Department of Medical Oncology Hospital Universitario de NavarraPamplona 31008Spain Department of Medical Oncology Hospital Universitario Infanta LeonorMadrid 28031Spain Department of Medical Oncology Hospital Universitario Central de AsturiasOviedo 33011Spain Department of Medical Oncology Hospital Universitario de CanariasTenerife 38320Spain Department of Medical Oncology Hospital Universitario La PazMadrid 28046Spain Department of Medical Oncology Hospital General Universitario de ValenciaCIBERONCValencia 46014Spain Department of Clinical Psychology and Psychobiology Faculty of PsychologyUniversity of BarcelonaBarcelona 08007Spain Department of Medical Oncology Hospital Universitario Central de AsturiasISPAOviedo 33007Spain Department of Clinical Psychology and Psychobiology University of BarcelonaBarcelona 08007Spain

BACKGROUNDPatients with advanced gastrointestinal cancer must cope with the negative effects of cancer and *** To evaluate psychological distress,quality of life,and coping strategies in patients with advanced colorectal cancer compared to non-colorectal cancer based on *** A prospective,transversal,multicenter study was conducted in 203 patients;101(50%)had a colorectal and 102(50%)had digestive,non-colorectal advanced *** completed questionnaires evaluating psychological distress(Brief Symptom Inventory-18),quality of life(EORTC QLQ-C30),and coping strategies(Mini-Mental Adjustment to Cancer)before starting systemic cancer *** The study included 42.4%*** exhibited more depressive symptoms,anxiety,functional limitations,and anxious preoccupation than *** with non-colorectal digestive cancer and women showed more somatization and physical symptoms than subjects with colorectal cancer and *** with colorectal cancer reported the best health *** The degree of disease acceptance in gastrointestinal malignancies may depend on sex and location of the primary digestive *** interventions should specifically address sex and tumor site differences in individuals with advanced digestive cancer.

关键词： Anxiety Colorectal cancer Depression Gastrointestinal cancer Sex

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Diagnostic-therapeutic management of bile duct cancer

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World Journal of Clinical Cases 2019年第14期7卷 1732-1752页

作者： José María Huguet Miriam Lobo José Mir Labrador Carlos Boix Cecilia Albert Luis Ferrer-Barceló Ana B Durá Patricia Suárez Isabel Iranzo Mireia Gil-raga Celia Baez de Burgos Javier Sempere Digestive Disease Department General University Hospital of ValenciaValencia 46014Spain Medical Oncology Department General University Hospital of ValenciaValencia 46014Spain Unidad Hepática Avanzada Servicio de Cirugía General y DigestivaGeneral University Hospital of ValenciaValencia 46014Spain Medical Oncology Department Hospital de RequenaRequena 46340Spain

Biliary tract cancer, or cholangiocarcinoma, comprises a heterogeneous group of malignant tumors that can emerge at any part of the biliary tree. This group is the second most common type of primary liver cancer. Diagnosis is usually based on symptoms, which may be heterogeneous, and nonspecific biomarkers in serum and biopsy specimens, as well as on imaging techniques. Endoscopy-based diagnosis is essential, since it enables biopsy specimens to be taken. In addition, it can help with locoregional staging of distal tumors. Endoscopic retrograde cholangiopancreatography is a key technique for the evaluation and treatment of malignant biliary tumors. Correct staging of cholangiocarcinoma is essential in order to be able to determine the degree of resectability and assess the results of treatment. The tumor is staged based on the TNM classification of the American Joint Committee on Cancer. The approach will depend on the classification of the tumor. Thus, some patients with early-stage disease could benefit from surgery;complete surgical resection is the cornerstone of cure. However, only a minority of patients are diagnosed in the early stages and are suitable candidates for resection. In the subset of patients diagnosed with locally advanced or metastatic disease, chemotherapy has been used to improve outcome and to delay tumor progression. The approach to biliary tract tumors should be multidisciplinary, involving experienced endoscopists, oncologists, radiologists, and surgeons.

关键词： Bile duct cancer Cholangiocarcinoma Management Diagnosis Incidence Multidisciplinary treatment

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Aboveground Blue Carbon Stock Assessment of Bakhawan Eco-Park Mangrove Plantation in New Buswang, Kalibo, Aklan, the Philippines

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Open Journal of Ecology 2022年第12期12卷 773-787页

作者： Melba L. raga-as Raffy L. Tano Floramae Q. Polaron roberto L. Saladar Nenia N. Bohulano Jea-Ann A. Morales Eric R. Gregorio Jose Adonis N. Nacionales Forestry Department College of Agriculture Forestry and Environmental Sciences Aklan State University Banga The Philippines Agriculture Department College of Agriculture Forestry and Environmental Sciences Aklan State University Banga The Philippines Forestry Department College of Agriculture Forestry and Food Science University of Antique Hamtic The Philippines

The purpose of this study was to determine the aboveground biomass density, blue carbon stock, and monetary value of the mangroves at Bakhawan Eco-Park Mangrove Plantation in New Buswang, Kalibo, Aklan. There were 21, 45 × 45-meter sampled plots established, equivalent to 5% sampling intensity of the plantation’s total area. The number of sample plots was distributed in proportion to the area of the plantation in the specific year it was established. The quadrant and random sampling methods were used. All trees in a quadrant were identified, and the biomass density was calculated using the wood density of various mangrove species. Carbon stock was calculated by multiplying the biomass density by 0.46 or 0.5. The monetary value of C was calculated using the benefits transfer method at $5/ton. The results showed that the plantation established in 1990 had the highest biomass density (Mg/ha) and carbon stock (Mg/ha) with 132 Mg/ha and 66.02 Mg/ha, while the plantation established in 2015 had the lowest biomass density and carbon stock (Mg/ha) with 69.98 Mg/ha and 34.99 Mg/ha. Overall, the estimated total monetary value of Bakhawan Eco-Park of 250 hectares mangrove plantation in New Buswang, Kalibo, Aklan is PhP 2994771.63.

关键词： Biomass Density Monetary Value Mangrove Species GSP Device KASAMA

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关于英语词典,你不知道的那些事儿

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新东方英语（中学版） 2017年第2期 63-65页

作者： Suzanne raga 申申然

乍一看,英语词典似乎很简单.单词都是按照字母顺序编排的,你只需翻到正确的那一页浏览一下,直到找到你要查的那个单词即可.不过,关于词典你可能还有很多方面并不了解.往下读,去了解一下关于各式各样的词典你可能并不知道的那些事儿吧.

关键词：英语词典单词字母

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网络核心技术内幕综合IP网络设计解决方案第一版

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丛书名： 21世纪网络工程师设计宝典丛书

2000年

作者：（美）（K.拉加）Khalid raga （美）（M.特纳）Mark Turner 希望图书创作室译

本书回顾了Internet的发展历程，概述了IP的基础原理和网络交换技术，特别介绍了路由选择信息协议版本1和版本2，探讨了在路由协议间的迁移原因和方法等问题。

ISBN: (纸本)7900044124

关键词：计算机互连网络协议

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