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Chemical-assisted MMP reduction on methane-oil systems:Implications for natural gas injection to enhanced oil recovery

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Petroleum 2024年第1期10卷 101-108页

作者： Mohamed Almobarak Matthew b.myers Colin D.Wood Yongbing Liu Ali Saeedi Quan Xie Discipline of Petroleum Engineering WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityWestern AustraliaAustralia Commonwealth Scientific and Industrial Research Organization Kensington6151Australia Curtin University Oil and Gas Innovation Centre Management Kensington6151Australia State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation No.8 Xindu AvenueXindu DistrictChengdu 610500PR China

***,the main challenge in this process is the high minimum miscibility pressure(MMP)between natural gas and crude oil,which limits its application and recovery factor,especially in hightemperature ***,we present a novel investigation to quantify the effect of chemicalassisted MMP reduction on the oil recovery ***,we measured the interfacial tension(IFT)of the methane-oil system in the presence of chemical or CO_(2) to calculate the MMP reduction at a constant temperature(373K)using the vanishing interfacial tension(VIT)***,we performed three coreflooding experiments to quantify the effect of MMP reduction on the oil recovery factor under different injection *** interfacial tension measurements show that adding a small fraction(1.5 wt%)of the tested surfactant(SOLOTERRA ME-6)achieved 9%of MMP reduction,while adding 20 wt%of CO_(2) to the methane yields 13%of MMP ***,the coreflooding results highlight the significance of achieving miscibility during gas injection,as the ultimate recovery factor increased from 65.5%under immiscible conditions to 77.2%using chemical-assisted methane,and to 79%using gas mixture after achieving near miscible *** results demonstrate the promising potential of the MMP reduction to signifi-cantly increase the oil recovery factor during gas ***,these results will likely expand the application envelop of the miscible gas injection,in addition to the environmental benefits of utilizing the produced gas by re-injection/recycling instead of flaring which contributes to reducing the greenhouse gas emissions.

关键词： Gas injection Enhanced oil recovery Miscibility Coreflooding

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马克思与虚无主义问题

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现代哲学 2011年第2期 18-24页

作者： David b.myers[美] 邓先珍(译) 美国Moorhead州立大学中山大学马克思主义哲学与中国现代化研究所、哲学系广州510275

马克思的目的是要说明人对价值的需要无须超越历史就能得到满足。认为善(good)内在于历史上与断言善是与历史相同的并非一回事。马克思并不是一个历史主义者——如罗森所使用的术语——因为他没有把善与"所发生之事"等同起来。罗森认为... 详细信息

马克思的目的是要说明人对价值的需要无须超越历史就能得到满足。认为善(good)内在于历史上与断言善是与历史相同的并非一回事。马克思并不是一个历史主义者——如罗森所使用的术语——因为他没有把善与"所发生之事"等同起来。罗森认为,马克思必定主张在历史中发生的任何事情都是可允许的。马克思的标准是人,而不是历史中在马克思的特定意义上算作人类的(行动)的所有行动。实际上在历史进程中,绝大多数个体是以一种非人的方式把自己对象化的。这就是马克思把前共产主义时期描述为"前历史"的原因,因为那是这样一段时间,在其中社会存在是人类活动的无意识的产物。只有当诸个体自觉地决定其生活并把物质世界置于合作性控制之下,恰当意义上的历史才真正开始。

关键词：马克思虚无主义施蒂纳罗森

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企业在渠道多元化后……

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中外管理 2005年第10期 42-44页

作者： Joseph b.myers Andrew D．Pickersgill Evan S．Van Metre

曾几何时，企业只需要一个渠道就可以向客户提供所有产品和服务。但如今，为了满足客户对更多渠道的需求，企业已纷纷开拓多种与客户接触途径。通常，客户使用多种渠道会比只用一种渠道平均多消费20％～30％，而且像互联网和海外电话中... 详细信息

曾几何时，企业只需要一个渠道就可以向客户提供所有产品和服务。但如今，为了满足客户对更多渠道的需求，企业已纷纷开拓多种与客户接触途径。通常，客户使用多种渠道会比只用一种渠道平均多消费20％～30％，而且像互联网和海外电话中心这样的渠道还可以节约大量成本。

关键词：企业渠道多元化经营管理客户忠诚度服务成本

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Physiological and Growth Responses of C_3 and C_4 Plants to Reduced Temperature When Grown at Low CO_2 of the Last Ice Age

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Journal of Integrative Plant biology 2008年第11期50卷 1388-1395页

作者： Joy K.Ward David A.myers Richard b.Thomas Department of Ecology and Evolutionary biology University of Kansas Department of biology West Virginia University

During the last ice age, CO2 concentration （[CO2]） was 180-200 umol/mol compared with the modern value of 380 umol/mol, and global temperatures were -8 ℃ cooler. Relatively little is known about the responses of C3 and C4 species to longterm exposure to glacial conditions. Here Abutilon theophrasti Medik. （C3） and Amaranthus retroflexus L. （C4） were grown at 200 umol/mol CO2 with current （30/24℃） and glacial （22/16℃） temperatures for 22d. Overall, the C4 species exhibited a large growth advantage over the C3 species at low [CO2]. However, this advantage was reduced at low temperature, where the C4 species produced 5x the total mass of the C3 species versus 14x at the high temperature. This difference was due to a reduction in C4 growth at low temperature, since the C3 species exhibited similar growth between temperatures. Physiological differences between temperatures were not detected for either species, although photorespiration/net photosynthesis was reduced in the C3 species grown at low temperature, suggesting evidence of improved carbon balance at this treatment. This system suggests that C4 species had a growth advantage over C3 species during low [CO2] of the last ice age, although concurrent reductions in temperatures may have reduced this advantage.

关键词： Abutilon theophrasti Amaranthus retroflexus C3 species C4 species climate change low CO2 low temperature photorespiration Pleistocene.

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Scoping out the future:The application of artificial intelligence to gastrointestinal endoscopy

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World Journal of Gastrointestinal Oncology 2022年第5期14卷 989-1001页

作者： Scott b Minchenberg Trent Walradt jeremy R Glissen brown Department of Internal Medicine Beth Israel Deaconess Medical CenterBostonMA 02130United States Division of Gastroenterology Beth Israel Deaconess Medical CenterBostonMA 02130United States

Artificial intelligence(AI)is a quickly expanding field in gastrointestinal *** there are a myriad of applications of AI ranging from identification of bleeding to predicting outcomes in patients with inflammatory bowel disease,a great deal of research has focused on the identification and classification of gastrointestinal *** of the initial randomized,prospective trials utilizing AI in clinical medicine have centered on polyp detection during screening *** addition to work focused on colorectal cancer,AI systems have also been applied to gastric,esophageal,pancreatic,and liver *** promising results in initial studies,the generalizability of most of these AI systems have not yet been *** this article we review recent developments in the field of AI applied to gastrointestinal oncology.

关键词： Artificial intelligence Oncology Gastroenterology Endoscopy Machine learning Computer-assisted decision making Computer-aided detection Computer-aided diagnosis

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Proton-pump inhibitor use does not affect semen luality in subfertile men

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Asian Journal of Andrology 2018年第3期20卷 290-293页

作者： Sorena Keihani James R Craig Chong Zhang Angela P Presson jeremy b.myers William O brant Kenneth I Aston benjamin R Emery Timothy G Jenkins Douglas T Carrell James M Hotaling Division of Urology Department of Surgery University of Utah Salt Lake City Utah 84132 USA Division of Epidemiology Department of Internal Medicine University of Utah Salt Lake City Utah 84132 USA Andrology and IVF Laboratory Department of Surgery (Urology) University of Utah Salt Lake City Utah 84108 USA

Proton-pump inhibitors （PPIs） are among the most widely used drugs worldwide. PPI use has recently been linked to adverse changes in semen quality in healthy men; however, the effects of PPI use on semen parameters remain largely unknown specifically in cases with male factor infertility. We examined whether PPI use was associated with detrimental effects on semen parameters in a large population of subfertile men. We retrospectively reviewed data from 12 257 subfertile men who had visited our fertility clinic from 2003 to 2013. Patients who reported using any PPIs for 〉3 months before semen sample collection were included; 7698 subfertile men taking no medication served as controls. Data were gathered on patient age, medication use, and conventional semen parameters; patients taking any known spermatotoxic medication were excluded. Linear mixed-effect regression models were used to test the effect of PPI use on semen parameters adjusting for age. A total of 248 patients （258 samples） used PPIs for at least 3 months before semen collection. In regression models, PPI use （either as the only medication or when used in combination with other nonspermatotoxic medications） was not associated with statistically significant changes in semen parameters. To our knowledge, this is the largest study to compare PPI use with semen parameters in subfertile men. Using PPIs was not associated with detrimental effects on semen quality in this retrospective study.

关键词： infertility proton-pump inhibitors semen analysis sperm quality spermatozoa

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天生不同

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作者： (美)伊莎贝尔·迈尔斯(Isabel briggs myers) (美)彼得·迈尔斯(Peter b.myers)

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Pill or procedure?Patient preferences on beta-blockers as an alternative to endoscopic variceal screening during the COVID-19 pandemic

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Gastroenterology Report 2022年第1期10卷 632-634页

作者： Zheng Che jeremy Louissaint Ihab Kassab Elliot b.Tapper Department of Internal Medicine University of MichiganAnn ArborMIUSA Division of Gastroenterology and Hepatology University of MichiganAnn ArborMIUSA Gastroenterology Section VA Ann Arbor Healthcare SystemAnn ArborMIUSA

Introduction Certain patients at low risk of clinically significant esophageal varices by baveno criteria can safely avoid screening esophagogastroduodenoscopy(EGD)[1,2].However,regardless of variceal status,the PREDESCI study suggests that earlier betablocker(bb)use in compensated disease with clinically significant portal hypertension by hepatic venous pressure gradient may result in benefit by delaying the time to decompensated cirrhosis[3,4].This carries significant ramifications for future clinical guidelines and decision-making for whom we decide to initiate bb.

关键词： esophageal hepatic screening

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Point-of-care testing in the diagnosis of gastrointestinal cancers: Current technology and future directions

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World Journal of Gastroenterology 2015年第14期21卷 4111-4120页

作者： jeremy R Huddy Melody Z Ni Sheraz R Markar George b Hanna Department of Surgery and Cancer Imperial College LondonSt Mary’s Hospital

Point-of-care(POC) tests enable rapid results and are well established in medical *** advances in analytical techniques have led to a new generation of POC devices that will alter gastrointestinal diagnostic *** review aims to identify current and newtechnologies for the POC diagnosis of gastrointestinal cancer.A structured search of the Embase and Medline databases was *** reporting diagnostic tests for gastrointestinal cancer available as a POC device or containing a description of feasibility for POC application were *** recovered were heterogeneous and therefore results are presented as a narrative *** diagnostic methods were identified(fecal occult blood, fecal proteins, volatile organic compounds, pyruvate kinase isoenzyme type M2, tumour markers and DNA analysis).Fecal occult blood testing has a reported sensitivity of 66%-85% and specificity greater than 95%.The others are at a range of development and clinical *** devices have a proven role in the diagnosis of gastrointestinal *** to their implementation exist and the transition from experimental to clinical medicine is currently *** technologies demonstrate potential to provide accurate POC tests and an ability to diagnose gastrointestinal cancer at an early stage with improved clinical outcome and survival.

关键词： Colorectal cancer Cancer-diagnosis Gastric cancer

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Inappropriate antibiotic dispensing and use:A public health threat in the Philippines

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Asian Pacific Journal of Tropical Medicine 2022年第8期15卷 341-342页

作者： Eric David b.Ornos Elgin Paul b.Quebral jeremy A.Ceriales Ourlad Alzeus G.Tantengco College of Medicine University of the Philippines ManilaManilaPhilippines

A high rate of improper antibiotic dispensing was reported to patients with presumed viral infections even without a prescription from a physician in Vietnam[1]. Imprudent antibiotic dispensing and use were also observed in other countries, including the Philippines. A large number of patients experienced respiratory symptoms, such as cough and rhinorrhea during the COVID-19 pandemic, which exacerbated this problem with antibiotic use.

关键词： dis pens Vietnam

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