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Imaging technologies in oilfield applications

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2005年第12期6卷 1394-1400页

作者： XIE c.G. NORTH R. WILT M. ZHANG P. DENAcLARA H. LEVESQUE c. Schlumberger cambridge Research Limited Cambridge CB3 OEL UK Schlumberger Beijing GeoScience center Beijing 100084 China Schlumberger-EMI Richmond California 94804 USA Schlumberger Middle East S. A. Abu Dhabi UAE

In this paper, we describe some recent imaging technologies developed by Schlumberger for oilfield downhole mul- tiphase flow production logging (PL) and cross-well electromagnetic (EM) survey applications. FloScan Imager (FSITM) has been introduced as a 3-phase oil/gas/water flow PL tool for deviated and horizontal wells. FSI sensors can map fluid velocity and holdup profiles along a vertical diameter of the wellbore at every survey depth, enabling a robust estimate of the individual phase flow rates in complex flow regimes. The cross-well EM survey is based on cross-borehole induction logging technique and provides resistivity distribution at a reservoir scale. It is a useful tool for reservoir management and is most effective in dynamic fields where fluid saturations are variable in time and space. The tool can be used to identify (water or steam) flooded and bypassed regions. By monitoring changes in the resistivity spatial distribution with time, cross-well EM survey is very effective at mapping inter-well temperature and structure. Some field examples are shown for both FloScan Imager PL tool and cross-well resistivity imaging survey.

关键词： Oilfield Production logging (PL) Multiphase flow Imaging Tomography cross-well resistivity

Epidemiological and Paraclinical Aspects of Helicobacter pylori Infection among Hepatitis B Virus carriers in the Republic of congo

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Open Journal of Gastroenterology 2024年第5期14卷 184-191页

作者： Jile Florient Mimiesse Monamou Nuptia k.noha Elenga Ngala Itoua Ngaporo clausina Ahoui Apendi Marlyse Ngalessami Mouak.sso Arnaud Mongo Onk.uo Mauria Ibobi Rody Stéphane Ngami Mardoché Motoula Latou Hostaud Atipo Ibara céline Sandra Adoua Déby Gassaye Blaise Irénée Atipo Ibara Department of Gastroenterology and Internal Medicine Brazzaville University Hospital Brazzaville The Republic of Congo Faculty of Health Sciences Marien Ngouabi University Brazzaville The Republic of Congo

Objective: Describe the epidemiological and paraclinical aspects of HP infection in hepatitis B virus carriers. Population and Method: This was a descriptive cross-sectional study running from January 1 to August 30, 2019, a period of 8 months. It took.place in the Hospital centers of the two major cities of congo (Brazzaville and Pointe-Noire). The target population of our study consists of patients carrying HBV under antiviral treatment or not. Patients aged at least 18 years and consenting with a biological and morphological assessment were included. We did not include in our study patients tak.ng or having tak.n antibiotics and/or PPIs less than 4 week. ago. We excluded all patients who did not deposit fresh stools and those in whom stool extraction could not be done manually. The variables studied covered sociodemographic, clinical and paraclinical aspects. Data entry was done using Excel 8.0 software. Statistical analysis was carried out with SPSS 20.0 software. Results: During our study, we included 169 patients. The frequency of HPAG in the stools of HBV carriers in our study population was 63.9% (n = 109). Male patients represented 69% (n = 75) and female patients represented 31% (n = 34). The average age of the patients is 43.92 ± 13.51 years with extremes of 18 years and 80 years. concerning profession, unemployed patients and those work.ng in the private sector were the most represented in respectively 28.4% (n = 31) and 22.9% (n = 25) without statistical link. Households comprising between 4 - 10 people and the use of public latrines were the risk.factors most represented in respectively 69% (n = 75) and 88% (n = 96) without statistical link. clinically, hepatomegaly and signs of portal hypertension were most represented in 53% (n = 58) and 47% (n = 51). Biologically, HBV DNA was detectable in 60.5% of cases (n = 66).

关键词： Helicobacter pylori Hepatitis B Virus congo

Advanced Models Applied for the Elaboration of Landslide-Prone Maps, a Review

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International Journal of Geosciences 2022年第3期13卷 174-198页

作者： Tèhrrie k.nig Hermann J. H. k.x Alessandra c. corsi National Institute of Space Research—INPE S&#227 o José dos campos Brazil Technological Research Institute—IPT S&#227 o Paulo Brazil

Landslides are a natural phenomenon that happens all around the world. When happening in urban areas they become a disaster, disrupting the lifestyle of a community or society. Human losses, social impacts, and structural damage are some of the landslide’s effects. The current climate variability shows an increase in extreme weather conditions, either with long periods of drought or heavy and long-term rainfall. In Brazil, landslides are one of the deadliest disasters;they are usually preceded and triggered by heavy rainfall and already have affected more than 4 million people. Moreover, with the population growth, areas with high declivities have been occupied and turned into urban areas. Those people living there are vulnerable to suffering from landslides, losing their homes, and in extreme cases, losing their life. The identification and monitoring of landslide-prone areas are crucial to avoid disasters. Several advanced models, with different approaches, were developed to identify the landslide-prone areas. Aiming to decide the model that provides more satisfactory results, this paper presents a literature review of the applicability and limitations of three advanced models. The three models are Sinmap, Shalstab and TRIGRS. The analysis determined that all three models are adequate for stability management in slope areas. Moreover, TRIGRS results are more accurate than Shalstab, and the Sinmap model provides an over-estimation of landslide-prone areas.

关键词： Disaster Shalstab TRIGRS Sinmap Landslide Susceptibility

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Book.reviews

Fungal Diversity 2016年第2期77卷 381-402页

作者： Dhanushk. N.Wanasinghe Sutak.rn k.molhan Dinushani Anupama Daranagama W.k.M.c.Dayarathne Asha J.Dissanayak. Ishani D.Goonasek.ra k.k.Hapuarachchi Nimali Indiwaree de Silva Hasini Ek.nayak. Subashini c.Jayasiri Samantha c.k.runarathna Rek.ani H.Perera chayanard Phuk.amsak.a Indunil c.Senanayak. Qiuju Shang Thilini k.Wick.emasinghe Jing Yang YuanPin Xiao center of Excellence in Fungal Research School of ScienceMae Fah Luang University333 Moo 1ThasudMuangChiang Rai 57100Thailand Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand

Rating system Exceptional/brilliant Excellent Good Has merit Not worth reading Acanthamoeba:Biology and Pathogenesis(2nd edition)By Naveed Ahmed k.an The American Phytopathological Society Hardcover;334 pages;including 88 figures and 26 tables;ISBN:978-1-908230-50-8(hardcover)ISBN:978-1-908230-51-5(eBook.Acanthamoeba is an opportunistic protist pathogen,causing a blinding k.ratitis and fatal granulomatous *** Acanthamoeba has gained increasing attention during the last few decades from the scientific communities,with cellular microbiology,environmental biology,physiology,cellular interactions,molecular biology,biochemistry and the evolutionary studies.

关键词： tables gained brilliant

Quantum Well Infrared Photodetectors:the Basic Design and New Research Directions

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Journal of Semiconductors 2001年第5期22卷 529-537页

作者： H.c.Liu Institute for Microstructural Sciences National Research council

The basic design principles and parameters of GaAs/AlGaAs quantum well infrared photodetectors (QWIP) are *** new research directions,devices and applications suited for QWIPs are *** include monolithic integration of QWIPs with GaAs based electronic and optoelectronic devices,high frequency and high speed QWIPs and applications,multicolor and multispectral detectors,and p-type QWIPs.

关键词：光电探测器量子束红外探测器

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双基地雷达的同步问题

系统工程与电子技术 1989年第2期11卷 33-36页

作者： c.k.Bovey c.P.Horne 李馥仲坚

一、引言双基地雷达的性能取决于发射机和接收机的同步质量。本文提出了对同步的要求和可以实现双基地系统同步的实际方法。文中讲述了一个陆基实验用中重复频率同步系统,并给出了结果。

关键词：双基地雷达同步问题雷达

Defect control at nanoscale and flux pinning enhancement in MgB_2 superconductor

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Journal of Modern Transportation 2012年第2期20卷 65-69页

作者： c.H.cHENG c.SORRELL School of Materials Science and Engineering University of New South Wale

Defect control at nanoscale of MgB2 by doping various nanoparticles including Ti, c, nano-diamond, and HOB4, and their roles played to enhance flux pinning force in MgB2 are compared and analyzed. These nanodopants have different chemical and physical properties, thus bring about different pinning efficiency, especially nanodopants with strong magnetic moment are particularly interesting as pinning centers in MgB2 since magnetic impurities usually have a stronger interaction with magnetic flux line than nonmagnetic impurities and may exert a stronger force to trap the flux lines when they are properly introduced into the superconducting matrix.

关键词： MgB2 flux pinning nano-pinning centers microstrueture control

The Great coronavirus Pandemic of 2019−2021:the Future and the Requirement for china-America cooperation

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china cDc week.y 2021年第7期3卷 136-137页

作者： Robert c.Gallo Institute of Human Virology at the University of Maryland School of Medicine BaltimoreMDUSA Global Virus Network.GVN)

Over the past century,the great pandemics and most epidemics(defined as virus presence and disease induction presenting more than the expected number of infections in a population)were caused by the sudden outbreak.of an RNA virus such as the pandemics of influenza,polio,and HIV/AIDS and the epidemics of influenza,Ebola,Dengue,Zik.,West Nile,severe acute respiratory syndrome(SARS),Middle East respiratory syndrome(MERS),and *** course,there are other infections that remain endemic problems in parts of the world.

关键词： respiratory acute epidemic

Elbow Dislocation in children: About Two cases and Review of the Literature

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Open Journal of Pediatrics 2024年第2期14卷 218-226页

作者： Nyanit Bob Dorcas Atangana cédric Paterson Mantho Fopa Pauline k.una TsalaIrène Nadine Mvouni Bob Thérèse Raissa Bek.ma k.ng Francis Ateaze chrisantus Dik.ngue Diwondi Audrey Ndongo Réné Ak.a Manga Ismael Evoni Molo Tatiana choupo Guetchuin Stéphane Handy Eone Daniel Department of Surgery and Specialties Faculty of Medecine and Biomedical Sciences University of Yaoundé I Yaoundé Cameroon Infant Surgery Department of Yaounde central Hospital Yaoundé Cameroon Faculty of Medecine and Pharmaceutical Sciences of Douala Douala Cameroon Troyes Hospital center Troyes France Vire Normandie Hospital center Normandie France Traumatology Department of Yaounde central Hospital Yaoundé Cameroon

Back.round: Elbow dislocations in pediatric patients are rare injuries. This is a therapeutic emergency because a delay in treatment can have disastrous consequences on the functional level of the upper limb. Objective: To present the management of elbow dislocation in children in cases of limited resources. Presentation of the cases: These were 2 older male children aged 7 and 9 years old, admitted to the emergency room for painful functional impotence of the right elbow after a fall and landing on the right hand. clinical and radiological examinations were in favor of posterior elbow dislocations. The reductions were carried out under sedation and immobilization in Jersey. According to Robert’s criteria, the functional result was excellent in both patients. conclusion: Emergency reduction and immobilization whatever the means ensure an excellent functional prognosis even in cases of limited resources.

关键词： Elbow Dislocation child Diagnosis Treatment Limited Resources