检索结果-南通市图书馆

Meteorite impact craters as hotspots for mineral resources and energy fuels:A global review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Geoscience 2022年第2期3卷 136-146页

作者： s.james saranya R.Chandran M.santosh A.P.Pradeepkumar M.N.Praveen K.s sajinkumar s sajinkumar 1 2department of geologyuniversity of keralathiruvananthapuram695581keralaindia school of earth science and resources china university of geosciencesbeijing100083china department of earth sciences university of adelaidesa5005australia geological survey of india bengaluru560111india department of geological and mining engineering and sciences michigan technological universityhoughton49931miusa

The ever-increasing recovery rate of natural resources from terrestrial impact craters over the last fewdecades across the globe offers new avenues for further exploration of mineral and hydrocarbon resources in such *** of today,60 of the 208 terrestrial craters have been identified to host diverseresources such as hydrocarbons,metals and construction *** potential of craters as plausibleresource contributors to the energy sector is therefore,worthy of consideration,as 42(70%)of the 60craters host energy resources such as oil,gas,coal,uranium,mercury,critical and major minerals as wellas hydropower *** others,19 craters are of well-developed hydrocarbon *** associated with craters are also classified similar to other mineral resources such as progenetic,syngenetic and epigenetic *** these,the progenetic and syngenetic mineralization are confinedto the early and late excavation stage of impact crater evolution,respectively,whereas epigenetic deposits are formed during and after the modification stage of crater ***,progenetic andsyngenetic mineral deposits(like Fe,Ni,Pb,Zn and Cu)associated with craters are formed as a directresult of the impact event,whereas epigenetic deposits(***)are hosted by the impactstructure and result from post-impact *** the progenetic and syngenetic deposits,the shockwave induced fracturing and melting aid the formation of deposits,whereas in the epigenetic deposits,the highly fractured lithostratigraphic units of higher porosity and permeability,like the centralelevated area(CEA)or the rim,act as *** this review,we provide a holistic view of the mineral andenergy resources associated with impact craters,and use some of the remote sensing techniques toidentify the mineral deposits as supplemented by a schematic model of the types of deposits formedduring cratering process.

关键词： Meteorite impact crater Progenetic deposit syngenetic deposit Epigenetic deposit Mineralization Hydrocarbon Petroleum Exploration

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

有关围生医学的一些问题

中华儿科杂志 1984年第4期22卷 247-249页

作者： s.james 美国哥伦比亚大学

美国哥伦比亚大学新生儿学教授***于1983年10月6～18日来北京、武汉讲学,主要介绍了围生医学的一些问题和某些新进展。现整理如下,供广大读者参考。本文未经***教授审阅,如有错误,由整理者负责。

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

贝叶斯统计学

A review of progress on nano-aperture VCsEL Invited Paper

1992年

作者： s·詹姆士·普雷斯(s.james Press)

来源：南通市图书馆图书汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

Chinese Optics Letters 2008年第10期6卷 748-754页

作者： sonny Vo james s.Harris solid state and Photonics Laboratory Stanford UniversityStanfordCalifornia94305USA

This paper reviews the progress on nano-aperture vertical-cavity surface-emitting lasers （VCsELs）. The design, fabrication, and polarization control of nano-aperture VCsELs are reviewed. With the nanoaperture evolving from conventional circular and square aperture to unique C-shaped, H-shaped, I-shaped, and bowtie-shaped aperture, both the near-field intensity and near-field beam confinement from nanoaperture VCsELs are significantly improved. As a high-intensity compact light source with sub-100- nm spot size, nano-aperture VCsELs are promising to realize many new near-field optical systems and applications.

关键词： VCsEL view A review of progress on nano-aperture VCsEL Invited Paper

维普期刊数据库

Treating amyotrophic lateral sclerosis with allogeneic schwann cell-derived exosomal vesicles: a case report

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第4期20卷 1207-1216页

作者： Pascal J.Goldschmidt-Clermont Aisha Khan George Jimsheleishvili Patricia Graham Adriana Brooks Risset silvera Alexander J.P.Goldschmidt Damien D.Pearse W.Dalton Dietrich Allan D.Levi james D.Guest Miller school of Medicine University of MiamiMiamiFLUSA stem Cell Institute Miller School of MedicineUniversity of MiamiMiamiFLUSA The Miami Project to Cure Paralysis Miller School of MedicineUniversity of MiamiMiamiFLUSA Alzady International LLC MiamiFLUSA Neurological surgery Miller School of MedicineUniversity of MiamiMiamiFLUSA

schwann cells are essential for the maintenance and function of motor neurons,axonal networks,and the neuromuscular *** amyotrophic lateral sclerosis,where motor neuron function is progressively lost,schwann cell function may also be ***,important signaling and potential trophic activities of schwann cell-derived exosomal vesicles have been *** case report describes the treatment of a patient with advanced amyotrophic lateral sclerosis using serial intravenous infusions of allogeneic schwann cell-derived exosomal vesicles,marking,to our knowledge,the first instance of such *** 81-year-old male patient presented with a 1.5-year history of rapidly progressive amyotrophic lateral *** initial diagnosis,the patient underwent a combination of generic riluzole,sodium phenylbutyrate for the treatment of amyotrophic lateral sclerosis,and *** patient volunteered to participate in an FDA-approved single-patient expanded access treatment and received weekly intravenous infusions of allogeneic schwann cell-derived exosomal vesicles to potentially restore impaired schwann cell and motor neuron *** confirmed that cultured schwann cells obtained from the amyotrophic lateral sclerosis patient via sural nerve biopsy appeared impaired(senescent)and that exposure of the patient’s schwann cells to allogeneic schwann cell-derived exosomal vesicles,cultured expanded from a cadaver donor improved their growth capacity in *** a period of observation lasting 10 weeks,during which amyotrophic lateral sclerosis Functional Rating scale-Revised and pulmonary function were regularly monitored,the patient received weekly consecutive infusions of 1.54×1012(×2),and then consecutive infusions of 7.5×1012(×6)allogeneic schwann cell-derived exosomal vesicles diluted in 40 mL of Dulbecco’s phosphate-buffered *** of the infusions were associated with adverse events such as infusion reactions(allergic or otherwise)or

关键词： allogeneic amyotrophic lateral sclerosis exosomes infusion neuromuscular junction schwann cell

维普期刊数据库

Abiotic and biotic constituents of oil sands process-affected waters

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental sciences 2023年第5期127卷 169-186页

作者： Nora A.s.Hussain james L.stafford Department of Biological sciences University of AlbertaEdmontonAlberta T6G 2N8Canada

The oil sands in Northern Alberta are the largest oil sands in the world,providing an important economic resource for the Canadian energy *** extraction of petroleum in the oil sands begins with the addition of hot water to the bituminous sediment,generating oil sands process-affected water(OsPW),which is acutely toxic to *** of litres of OsPW are stored on oil sands mining leased sites in man-made reservoirs called tailings *** the volume of OsPW increases,concerns arise regarding the reclamation and eventual release of this water back into the *** is composed of a complex and heterogeneous mix of components that vary based on factors such as company extraction techniques,age of the water,location,and bitumen ore ***,the effective remediation of OsPW requires the consideration of abiotic and biotic constituents within it to understand short and long term effects of treatments *** review summarizes selected chemicals and organisms in these waters and their interactions to provide a holistic perspective on the physiochemical and microbial dynamics underpinning OsPW.

关键词： OsPW toxicants Reclamation Tailings ponds Remediation Microbial AOPs Bioremediation

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

洋壳随时代的增厚

地震地质译丛 1987年第3期 30-33页

作者： s.james 韩宝福

引言洋壳覆盖了60%左右的地球表面,导致洋壳产生和演化的各种作用,对地球科学有着十分重要的意义。我们定义的洋壳是,海底沉积物及水体以下和莫霍面以上的各种结晶岩石。洋壳必须用间接的方法,通常是地震折射法进行研究。地震实验已揭... 详细信息

引言洋壳覆盖了60%左右的地球表面,导致洋壳产生和演化的各种作用,对地球科学有着十分重要的意义。我们定义的洋壳是,海底沉积物及水体以下和莫霍面以上的各种结晶岩石。洋壳必须用间接的方法,通常是地震折射法进行研究。地震实验已揭示了结构明显一致的洋壳,和海洋下面的各种主要作用在全世界都相似的证据。曾多次尝试将地震与打捞的岩石和陆缘的各种蛇绿岩的地质研究结果进行对比。在过去的15年中,所谓的洋壳蛇绿岩模式已得到广泛的接受。在这一模式中,最上部的洋壳由枕状玄武岩组成,玄武岩盖在席状岩墙群上

关键词：洋壳厚度地震折射大洋型地壳增厚蛇绿岩超基性岩辉长岩基性岩席状岩墙地震波曲线

Current recommendations of managing HBV infection in preconception or pregnancy

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Medicine 2014年第2期8卷 158-165页

作者： james s. Park Calvin Pan Division of Gastroenterology Department of Medicine NYU Langone Medical Center NYU School of Medicine New York 10016 USA

Hepatitis B remains a leading cause of cirrhosis, hepatocellular carcinoma and liver transplantation worldwide. Management of chronic hepatitis B during pregnancy is challenging. Transmission of hepatitis B to infants still occurs perinataily although immunoprophylaxis is widely available for infants born to mothers with chronic hepatitis B infection. The emerging data suggest that initiation of antiviral therapy in the beginning of the third trimester in highly viremic mothers can prevent immunoprophylaxis failure in their infants. The available drug safety data show that lamivudine, telbivudine and tenofovir are generally safe to be used during the pregnancy. In order to minimize the fetal exposure to the antiviral medication, antiviral therapy during the pregnancy should be limited to a selected group of patients with cirrhosis, high hepatitis B viral load, or prior history immunoprophylaxis failure. An elective Caesarean section may reduce the risk of perinatal transmission. For those females planning for pregnancy or in early stage of pregnancy, communication and follow-up among obstetrician, gastroenterologist, and primary care physician are important. In this article, we will review the features of hepatitis B infection before, during and after the pregnancy; the risk factors that increase mother-tochild transmission; safety data on antiviral drug use during pregnancy; and the potential role of Caesarean section in selected cases.

关键词： antiviral therapy Caesarean section cirrhosis hepatitis B irnmunoprophylaxis mother-to-child transmission pregnancy prevention

Implicit Continuous User Authentication for Mobile Devices based on Deep Reinforcement Learning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer systems science & Engineering 2023年第2期44卷 1357-1372页

作者： Christy james Jose M.s.Rajasree Government Engineering College Idukki685603India APJ Abdul Kalam Technological University Thiruvananthapuram695016India

The predominant method for smart phone accessing is conﬁned to methods directing the authentication by means of Point-of-Entry that heavily depend on physiological biometrics like,ﬁngerprint or *** continuous authentication initiating to be loftier to conventional authentication mechanisms by continuously conﬁrming users’identities on continuing basis and mark the instant at which an illegitimate hacker grasps dominance of the ***,divergent issues remain *** research aims to investigate the power of Deep Reinforcement Learning technique to implicit continuous authentication for mobile devices using a method called,Gaussian Weighted Cauchy Kriging-based Continuous Czekanowski’s(GWCK-CC).First,a Gaussian Weighted Non-local Mean Filter Preprocessing model is applied for reducing the noise pre-sent in the raw input face *** Kriging Regression function is employed to reduce the ***,Continuous Czekanowski’s Clas-siﬁcation is utilized for proﬁcient classiﬁcation between the genuine user and *** this way,the proposed GWCK-CC method achieves accurate authen-tication with minimum error rate and *** assessment of the pro-posed GWCK-CC method and existing methods are carried out with different factors by using UMDAA-02 Face *** results conﬁrm that the proposed GWCK-CC method enhances authentication accuracy,by 9%,reduces the authen-tication time,and error rate by 44%,and 43%as compared to the existing methods.

关键词： Deep reinforcement learning gaussian weighted non-local meanﬁlter cauchy kriging regression continuous czekanowski’s implicit continuous authentication mobile devices