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Unusual presentations of eosinophilic gastroenteritis:Case series and review of literature

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World Journal of Gastroenterology 2009年第17期15卷 2156-2161页

作者： Rafiq A Sheikh Thomas P Prindiville R Erick Pecha boris h.ruebner Department of Gastroenterology Kaiser Permanente Medical Center 6600 Bruceville Road SacramentoCA 95823 United States Department of Gastroenterology University of California Davis 4150 V Street Sacramento CA95917 United States Department of Gastroenterology Marshall Medical Center 1100 Marshall Way Placerville CA 95667 United States Department of Pathology University of California Davis 4150 V Street Sacramento CA 95917 United States

Eosinophilic gastroenteritis (EG) is an uncommon disease characterized by focal or diffuse eosinophilic infiltration of the gastrointestinal tract, and is usually associated with dyspepsia, diarrhea and peripheral eosinophilia. Diffuse gastrointestinal tract and colonic involvement are uncommon. The endoscopic appearance may vary from normal to mucosal nodularity and ulceration. Gastrointestinal obstruction is unusual and is associated with predominantly muscular disease. We present five unusual cases of EG associated with gastric outlet and duodenal obstruction. Two cases presented with acute pancreatitis and one had a history of pancreatitis. Four cases responded well to medical therapy and one had recurrent gastric outlet obstruction that required surgery. Four out of the five cases had endoscopic and histological evidence of esophagitis and two had colitis. Two patients had ascites. These cases reaffirm that EG is a disorder with protean manifestations and may involve the entire gastrointestinal tract. Gastric outlet and/or small bowel obstruction is an important though uncommon presentation of EG. It may also present as esophagitis, gastritis with polypoid lesions, ulcers or erosions, colitis and pancreatitis and may mimic malignancy.

关键词： Gastroenteritis Eosinophilic Gastrointestinal obstruction Eosinophilic esophagitis Eosinophilic colitis Eosinophilic pancreatitis

天然气水合物储层性质对微波加热后储层温度的影响

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中国石油大学学报(自然科学版) 2025年

作者：樊燊王旱祥张辛刘延鑫孙秉宇葛家旺葛城才刘博 KhROUSTALEV boris 管冰中国石油大学(华东)海洋物探及勘探开发装备国家工程研究中心中国石油大学(华东)机电工程学院山东威马泵业股份有限公司

为了弥补降压法开采后期储层结冰、水合物二次生成等方面的不足,运用微波加热技术向储层进行能量补充。选用漏泄同轴天线作为微波加热装置,根据装置结构设计天然气水合物储层微波加热工艺方案,并且建立水合物储层微波加热仿真模型,通过... 详细信息

为了弥补降压法开采后期储层结冰、水合物二次生成等方面的不足,运用微波加热技术向储层进行能量补充。选用漏泄同轴天线作为微波加热装置,根据装置结构设计天然气水合物储层微波加热工艺方案,并且建立水合物储层微波加热仿真模型,通过试验验证仿真模型的准确性,并分析储层性质对微波加热后储层温度的影响规律。结果表明:储层微波加热工艺方案能够有效提升储层温度,储层初始温度为2℃,微波加热后储层最高温度为26.22℃,平均温度为5.19℃;储层温度随着损耗因子的增大而增大,随着介电常数的增大而减小;随着储层密度和比定压热容的增大,储层升温效果变差;随着储层导热系数的增大,储层温度分布更加均匀。

关键词：天然气水合物储层性质微波加热储层温度微波天线

Surface-enhanced Raman scattering inside Au@Ag core/shell nanorods

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Nano Research 2016年第8期9卷 2303-2318页

作者： boris Khlebtsov Institute of Biochemistry and Physiology of Plants and Microorganisms Russian Academy of Sciences Saratov 410049 Russia Saratov National Research State University Saratov 410012 Russia

The design and synthesis of plasmonic nanoparticles with Raman-active molecules embedded inside them are of significant interest for sensing and imaging applications. however, direct synthesis of such nanostructures with controllable shape, size, and plasmonic properties remains extremely challenging. here we report on the preparation of uniform Au@Ag core/sheU nanorods with controllable Ag shells of 1 to 25 nm in thickness. 1,4-Aminothiophenol （4-ATP） molecules, used as the Raman reporters, were located between the Au core and the Ag shell. Successful embedding of reporter molecules inside the core/shell nanoparticles was confirmed by the absence of selective oxidation of the amino groups, as measured by Raman spectroscopy. The dependence of Raman intensity on the location of the reporter molecules in the inside and outside of the nanorods was studied. The molecules in the interior showed strong and uniform Raman intensity, at least an order of magnitude higher than that of the molecules on the nanoparticle surface. In contrast to the usual surface-functionalized Raman tags, aggregation and clustering of nanoparticles with embedded molecules decreased the surface-enhanced Raman scattering （SERS） signal. The findings from this study provide the basis for a novel detection technique of low analyte concentration utilizing the high SERS response of molecules inside the core/shell metal nanostructures. As an example, we show robust SERS detection of thiram fungicide as low as 10-9 M in solutions.

关键词： surface-enhanced Ramanscattering (SERS) Au@Ag nanorods nanocuboids multipole plasmons

On approach for obtaining approximate solution to highly nonlinear oscillatory system with singularity

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Acta Mechanica Sinica 2020年第4期36卷 910-917页

作者： Zvonko Rakaric boris Stojic Department of Mechanics Faculty of Technical SciencesUniversity of Novi Sad21000 Novi SadSerbia Department of Mechanization and Design Engineering Faculty of Technical SciencesUniversity of Novi Sad21000 Novi SadSerbia

This paper deals with further investigations of recently introduced so-called low-frequency pendulum mechanism,which represents an extended form of classical *** equation of motion,which is in Eksergian’s form,is a singular and highly nonlinear second order differential *** is transformed by suitable choice of a new “coordinates”into classical form of nonlinear conservative oscillator containing only inertial and restoring force ***,due to the singularity of coefficient of governing equation that shows hyperbolic growth,Laurent series expansion was *** these,we derived a nonsingular nonlinear differential equation,for which there exists an exact solution in the form of a Jacobi elliptic *** using this exact solution,and after returning to the original coordinate,both explicit expression for approximate natural period and solution of motion of mechanism were *** between approximate solution and solution is obtained by numerical integration of exact equation shows noticeable *** of impact of mechanism parameters on period is given.

关键词： Pendulum mechanism Low frequency Singularity Laurent series Jacobi elliptic function

A Linear System Arising from a Polynomial Problem and Its Applications

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Chinese Annals of Mathematics,Series B 2007年第3期28卷 283-292页

作者： boris ShEKhTMAN Department of Mathematics University of South FloridaPHY1144202 E Fowler AvenueTampaFL 33620-5700USA.

A linear system arising from a polynomial problem in the approximation theory is studied, and the necessary and sufficient conditions for existence and uniqueness of its solutions are presented. Together with a class of determinant identities, the resulting theory is used to determine the unique solution to the polynomial problem. Some homogeneous polynomial identities as well as results on the structure of related polynomial ideals are just by-products.

关键词： Linear system Determinant identity Polynomial ideal in two variables

The Log Minimal Model Program for horospherical Varieties Via Moment Polytopes

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Acta Mathematica Sinica,English Series 2018年第3期34卷 542-562页

作者： boris PASQUIER Institut Montpelliérain Alexander Grothendieck CNRS Univ. Montpellier Laboratoire de Mathématiques et Applications CNRS Université de Poitiers

In a previous work, we described the Minimal Model Program in the family of Q-Gorenstein projective horospherical varieties, by studying certain continuous changes of moment polytopes of polarized horospherical varieties. here, we summarize the results of the previous work and we explain how to generalize them in order to describe the Log Minimal Model Program for pairs（X, Δ） when X is a projective horospherical variety.

关键词： Log minimal model program horospherical varieties moment polytopes

Chances and challenges in China

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Protein & Cell 2016年第4期7卷 233-235页

作者： boris Tefsen Department of Biological Sciences Xi'an Jiaotong-Liverpool University Suzhou China

So there I was, 35 years old and at the crossroads of my scientific career. The current academic system in the Netherlands, like in many other places around the world （Powell, 2015）, is not designed to have scientists staying in a postdoc position forever. So, you are either deemed good enough to become a permanent staff member, or you have to leave academia at some point and try your luck in a pharmaceutical company or elsewhere. I had not succeeded in the former, but I also did not want to do the latter, so I took a less threaded path and headed to China.

关键词： Chances challenges China

Uncertainty-aware molecular dynamics from Bayesian active learning for phase transformations and thermal transport in SiC

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npj Computational Materials 2023年第1期9卷 2000-2007页

作者： Yu Xie Jonathan Vandermause Senja Ramakers Nakib h.Protik Anders Johansson boris Kozinsky John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMAUSA Department of Physics Harvard UniversityCambridgeMAUSA Corporate Sector Research and Advance Engineering Robert Bosch GmbHRenningenUSA Interdisciplinary Centre for Advanced Materials Simulation Ruhr-Universität BochumBochumGermany Robert Bosch LLC Research and Technology CenterWatertownMAUSA

Machine learning interatomic force fields are promising for combining high computational efficiency and accuracy in modeling quantum interactions and simulating atomistic *** learning methods have been recently developed to train force fields efficiently and *** them,Bayesian active learning utilizes principled uncertainty quantification to make data acquisition *** this work,we present a general Bayesian active learning workflow,where the force field is constructed from a sparse Gaussian process regression model based on atomic cluster expansion *** circumvent the high computational cost of the sparse Gaussian process uncertainty calculation,we formulate a high-performance approximate mapping of the uncertainty and demonstrate a speedup of several orders of *** demonstrate the autonomous active learning workflow by training a Bayesian force field model for silicon carbide(SiC)polymorphs in only a few days of computer time and show that pressure-induced phase transformations are accurately *** resulting model exhibits close agreement with both ab initio calculations and experimental measurements,and outperforms existing empirical models on vibrational and thermal *** active learning workflow readily generalizes to a wide range of material systems and accelerates their computational understanding.

关键词： computer thermal utilize

The family of quantum droplets keeps expanding

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Frontiers of physics 2021年第2期16卷 9-12页

作者： boris A.Malomed Department of Physical Electronics School of Electrical EngineeringFaculty of Engineeringand Center for Light-Matter InteractionTel Aviv UniversityP.O.B.39040Tel AvivIsrael Instituto de Alta Investigacion Universidad de TarapacaCasilla 7DAricaChile

In the course of the past 25 years,several new quantum states of matter have been created in ultracold gases,starting from the celebrated Bose-Einstein condensates(BECs),which were first made in 1995,follow-ing the theoretical prediction published in 1924[1].This achievement was followed by the creation and detailed exploration of degenerate Fermi gases[2].

关键词： quantum gases expanding