检索结果-南通市图书馆

World Journal of Gastrointestinal Endoscopy 2020年第1期12卷 49-52页

作者： Shahzad Iqbal Aman Ali Arham Razzaq Eman Shahzad Department of Gastroenterology Good Samaritan HospitalWest IslipNY 11795United States Department of Gastroenterology Lancaster General HospitalLancasterPA 17602United States Herricks High School New Hyde ParkNY 11040United States

Endoscopic submucosal dissection(ESD)and related procedures are minimally invasive and cost-effective alternates to ***,there is no approved or listed current procedural terminology(CPT)for *** aimed to review the current reimbursement process hurdles for ESD procedures in private practice model in United *** reviewed the data of two advanced endoscopists(one in New York and other in Pennsylvania State)performing ESD in their private practice *** found the reimbursement process was complex,with number of refusals varied from 0-9 for ESD *** was not paid at all in 8.3%of cases by the medical *** mucosal resection,which is considered inferior as compared to ESD,but has a listed CPT,was denied in only 0.83%*** data highlights the billing hurdles by the endoscopists to adopt ESD-related procedures in private practice model.

关键词： Endoscopic submucosal dissection Lack of reimbursement Current procedural terminology Minimally invasive gastrointestinal endoscopy North America

Rylene Dielectrophores for Capacitive Energy Storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2018年第6期9卷 534-541页

作者： Andrey Borzenko Carine Edder Lev Mourokh Pavel Lazarev Capacitor Sciences Inc. Menlo Park USA Department of Physics Queens College of the City University of New York Flushing USA The Graduate Center of CUny New York NY USA

Main design principles of the potent rylene-based class of dielectrophores are established in the present article. The proposed class of dielectrophores comprises polarizable aromatic core, conjugated with aromatic subunits, and bears resistive groups on the periphery. The aromatic subunits might comprise donor and acceptor groups for the desired level of polarizability of the molecule. Appropriate positions for donor and acceptor groups are established by quantum chemistry modeling. The design principles are demonstrated on the molecular design of an efficient rylene-based dielectrophore.

关键词： Dielectrophore Polarization Capacitor Molecular Dielectrics Molecular Design

Molecular Materials for Energy Storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Materials Sciences and Applications 2018年第6期9卷 517-525页

作者： Lev Mourokh Carine Edder Wolfgang Mack Pavel Lazarev Capacitor Sciences Inc. Menlo Park USA Department of Physics Queens College of the City University of New York Flushing USA The Graduate Center of CUny New York NY USA

We map the requirements and design rules for dielectric materials that target large scale energy storage applications of electrostatic capacitors. The molecular unit (dielectrophore) must contain three main components: a polarizable subunit having large electric dipole, an isolating subunit which prevents current leakage, and a structural element that promotes self-assembly of molecules in solution and in mesophase and promotes crystallization in the process of film formation. This structural subunit is necessary for high molecular density and enhanced resistivity of film. The process engineering steps required for the supramolecular assembly and crystal film formation (cascade crystallization) are addressed.

关键词： Capacitor Molecular Dielectrics Molecular Design Polarization Induced Electric Dipole

Spatially biased dispersal of acorns by a scatter-hoarding corvid may accelerate passive restoration of oak habitat on California＇s largest island

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2017年第4期63卷 363-367页

作者： Mario B. PESENDORFER T. Scott SILLETT Scott A. MORRISON School of Biological Sciences University of Nebraska - Lincoln 348 Manter Hall Lincoln NE 68588-0118 USA Migratory Bird Center Smithsonian Conservation Biology Institute National Zoological Park MRC 5503 Washington D.C. 20013-7012 USA Cornell Lab of Ornithology 159 Sapsucker Woods Rd Ithaca NY 14850 USA The Nature Conservancy 4th Floor 201 Mission Street San Francisco CA 94105 USA

Scatter hoarding by corvids (crows, jays, magpies, and nutcrackers) provides seed dispersal for many large-seeded plants, including oaks and pines. When hoarding seeds, corvids often choose nonrandom locations throughout the landscape, resulting in differential survival of seeds. In the context of habitat restoration, such disproportional storing of seeds in areas suitable for germination and establishment can accelerate expansion and recovery of large-seeded tree populations and their associated ecosystems. Here, we investigate the spatial preferences of island scrub jays during scatter hoarding of acorns ( spp.) on Santa Cruz Island. We use a large behavioral data set on the birds' behavior in combination with seedling surveys and spatial analysis to determine whether 1) island scrub jays disproportionally cache seeds in specific habitat types, and 2) whether the preferred habitat type is suitable for oak regeneration. Our results show that the jays nonrandomly cache acorns across the landscape; they use chaparral and coastal sage scrub disproportionally while avoiding open and grassy areas. The areas used most often for caching were also the areas with the highest oak seedling densities. We discuss the potential role of these findings for the recovery of Santa Cruz Island's oak habitat since the 1980s.

关键词：分散贮藏生境类型 s空间加利福尼亚橡子橡木乌鸦栖息地恢复

Complex natural product production methods and options

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthetic and Systems Biotechnology 2021年第1期6卷 1-11页

作者： Dongwon park Girish Swayambhu Thomas Lyga Blaine APfeifer Department of Chemical and Biological Engineering University at BuffaloThe State University of New YorkBuffaloNYUSA

Natural products have had a major impact upon quality of life,with antibiotics as a classic example of having a transformative impact upon human *** this contribution,we will highlight both historic and emerging methods of natural product *** methods of natural product production relied upon native cellular host *** this context,pragmatic and effective methodologies were established to enable widespread access to natural *** reviewing such strategies,we will also highlight the development of heterologous natural product biosynthesis,which relies instead on a surrogate host system theoretically capable of advanced production *** comparing native and heterologous systems,we will comment on the base organisms used for natural product biosynthesis and how the properties of such cellular hosts dictate scaled engineering practices to facilitate compound *** concluding the article,we will examine novel efforts in production practices that entirely eliminate the constraints of cellular production *** is,cell free production efforts will be introduced and reviewed for the purpose of complex natural product *** in this final analysis will be research efforts made on our part to test the cell free biosynthesis of the complex polyketide antibiotic natural product erythromycin.

关键词： Natural product Bio-manufacturing Native host Heterologous host Biosynthesis

Structure and transport studies on nanometer YBCO/PBCGO multilayers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2009年第15期54卷 2698-2702页

作者： CHEN Tar-Pin WU Ke LI Qi CHEN Ben WANG ShonZeng KANDEL Hom SOO YuChong TIPPARACH Udom CUI JingBiao SEQ HyeWon CHEN ChiJen Physics and Astronomy Department University of Arkansas Little Rock AR 72204 USA School of Physics Peking University Beijing 100871 China Physics Department Pennsylvania State University University Park PA 16802 USA Physics Department Ubon Rajathanee University Warinchamrab Ubon 34190 Thailand Physics Department University of Buffalo Amherst NY 14214 USA Education Department University of Arkansas Little Rock AR 72204 USA

We have fabricated M doped (M = Al, Co, Fe, Ga, Ni and Zn) PrBa2Cu3O7 (PBCO), i.e. PrBa2(Cu1-xMx)3O7. The doping levels x are 0.05, 0.10, 0.15, and 0.20. X-ray data indicated no significant second phase for substituting Cu by Al, Co, Fe and Ga up to 20%. However impurity phases were detected for Ni and Zn substituted samples with doping levels equal to and higher than 15%. At 77 K the electrical resistivity of these compounds is orders in magnitude higher than that of PBCO. We also found that although the lattice parameters in the doped samples differ from PBCO, all samples remain orthorhombic. The lattice parameters of the doped sample are very close to those of YBa2Cu3O7-δ (YBCO) and PBCO. For this reason these compounds are better materials to be used as the I-layer for YBCO SIS junctions. Results of structural and transport studies on 2000 thick PrBa2[Cu0.80G0.2]3O7 (PBCGO) and YBCO/PBCGO multilayers are presented in this paper.

关键词：纳米结构多层膜超导运输 PrBa2Cu3O7 lattice 钇钡铜氧锌掺杂

RECENT THEROPOD DISCOVERIES FROM LIAONING PROVINCE, CHINA AND THEIR CONTRIBUTIONS TO OUR UNDERSTANDING OF COELUROSAUR EVOLUTION

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

RECENT THEROPOD DISCOVERIES FROM LIAONING PROVINCE, CHINA AN...

Papillary Thyroid Cancer Association with the Use of Infertility Drugs Case Report and Literature Review

第十九届国际动物学大会

作者： Sunny H.Hwang Mark A.Norell Peter J.Makovicky Division of Paleontology American Museum of Natural History Central Park West at 79th Street New York NY 10024 USA Division of Paleontology American Museum of Natural History Central Park West at 79th Street New York NY 10024 USA Department of Geology The Field Museum Chicago Illinois 60605 USA

＜正＞New theropod discoveries from the Liaoning Province of China have been important in reconstructing not only the origin of flight and the theropod-avialan transition, but also in clarifying other aspects of coelurosaur systematics and evolution. Many of the new taxa are basal members of their respective clades that are especially vital in reconstructing coelurosaur phylogeny due to the large amount of homoplasy throughout Coelurosauria. Here we describe the effects that five new taxa-Sinovenator changii, Microraptor zhaoianus, Shenzhousaurus orientalis , Incisivosaurus gauthieri, and Huaxiag-nathus orientalis-have had on our understanding of coelurosaur evolution.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Open Journal of Endocrine and Metabolic Diseases 2021年第8期11卷 155-159页

作者： Sanna Salam Nusha Fareen Stuart Morduchowitz Issac Sachmechi Internal Medicine Department Icahn School of Medicine of Mount Sinai Queens Hospital Centre New York NY USA Hackensack Meridian Internal Medicine Department Jersey Shore University Medical Center Neptune City NY USA Endocrinology Department Northwell Hospital New Hyde Park NY USA Endocrinology Department Icahn School of Medicine of Mount Sinai Queens Hospital Centre New York NY USA

Recently, the incidence of papillary thyroid cancer increases rapidly than any other type of cancer worldwide, without the age and gender discrimination. Environmental or therapeutic exposure of radiation is main culprit of papillary thyroid cancer, but there is limited research available to support that to the usage of infertility drug associated with papillary thyroid cancer. We presented the rare and interesting case of papillary thyroid cancer while patient was on clomiphene citrate for the management of infertility. We found few studies which showed pathophysiology connection between in CC and papillary cell carcinoma.

关键词： Endocrinology Thyroid Infertility

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

固态电解质与电极界面的稳定性

物理学报 2020年第22期69卷 131-143页

作者：冯吴亮王飞周星吉晓韩福东王春生复旦大学材料科学系上海200433 复旦大学化学系上海200433 Department of Chemical and Biomolecular Engineering University of MarylandCollege ParkMD 20742USA Department of Mechanical Aerospaceand Nuclear EngineeringRensselaer Polytechnic InstituteTroyNY 12180USA

相比于有机体系锂离子电池,全固态锂金属电池有望同时提高电池安全性和能量密度,因而受到广泛的研究和关注.固态电解质的电化学窗口决定了电解质在高压电池充放电过程中是否保持稳定.目前的固态电解质,热力学稳定电化学窗口较窄,限制了... 详细信息

相比于有机体系锂离子电池,全固态锂金属电池有望同时提高电池安全性和能量密度,因而受到广泛的研究和关注.固态电解质的电化学窗口决定了电解质在高压电池充放电过程中是否保持稳定.目前的固态电解质,热力学稳定电化学窗口较窄,限制了其与高电压正极以及锂金属负极的匹配.因而能否形成动力学稳定的界面,决定了全固态电池是否能够持续高效工作.本文总结归纳了固态电解质的热力学稳定窗口的实验和理论计算研究进展,并对提高界面稳定性的实验进展进行了简述.在此基础上,提出构建动力学稳定性界面及防止锂枝晶的思路,并展望了全固态电池界面构建的研究方向.

关键词：全固态电解质电化学窗口界面稳定性全固态电池

ADVANCES IN THE MODEL OF CYLINDRICAL ALKALINE CELLS

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

电池工业 2002年第5期7卷 241-242页

作者： CHEH Huk-yuk 1 ,Samuel Ruben-Peter G. 2 (1.Duracell Global Business Managem ent Group,Berkshire Corporate park,Bethel,C T 06801USA,2.Departement of Chemical Engineering and Applied Chemistry Cloumbia University,New York,ny 10027USA) Duracell Global Business Management Group Berkshire Corporate ParkBethelCT 06801 USA Departement of Chemical Engineering and Applied Chemistry Cloumbia University New YorkNY 10027 USA

The advancement of a systematic inve stigation on the modeling of cylindr ical alkaline cells is *** analysis utilizes t hermodynamic and kinetic informati on to predict alkaline cell performa nce under low discharge *** modling has taken into consideration detailed information on the chemistry of electrode reactions,mass tranport of dissolved species,p hysical and chemical properties of t he electrolyte and solid phases,and in ternal geonetry of cell *** model is capable of predicting alkaline cell performance under a variety of dicharge *** model also p rovides information regarding inte rnal cell changes during *** model is the basis of a rational approach for the optimal design of cells.

关键词：圆柱型碱性电池多孔电极模型放电性能