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西藏旅游 2015年第1期 38-43页

作者： ray_king

写信告诉我，今天海是什么颜色，是否曾站在鼓浪闻涛，听那海哭声音，还是在海陵寻暖，看烟花易冷，享受夜闻存，又或在台北看雨。

关键词：旅游业旅游景点旅游市场鼓浪屿

Outcomes and efficacy of magnetic resonance imaging-compatible sacral nerve stimulator for management of fecal incontinence: A multi-institutional study

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World Journal of Radiology 2024年第2期16卷 32-39页

作者： Binit Katuwal Amy Thorsen Kunal Kochar Ryba Bhullar ray king Ernesto Raul Drelichman Vijay K Mittal Jasneet Singh Bhullar Department of Surgery Ascension Providence HospitalMichigan State University College of Human MedicineSouthfieldMI 48075United States Department of Colon and Rectal surgery Alina Health Abbott Northwestern HospitalMinneapolisMN 55407United States Colon and Rectal Surgery Advocate Illinois MasonicPark RidgeIL 60068United States Volunteer Student Department of ResearchAscension Providence HospitalSouthfieldMI 48075United States Colon and Rectal Surgery University of WisconsinMadisonWI 53715United States General and Colorectal Surgery Ascension Providence HospitalMichigan State University College of Human MedicineSouthfieldMI 48075United States Department of Surgery Department of Medical EducationAscension Providence HospitalMichigan State University College of Human MedicineSouthfieldMI 48075United States

BACKGROUND Fecal incontinence(FI)is an involuntary passage of fecal matter which can have a significant impact on a patient’s quality of *** modalities of treatment exist for *** nerve stimulation is a well-established treatment for *** the increased need of magnetic resonance imaging(MRI)for diagnostics,the In-terStim which was previously used in sacral nerve stimulation was limited by MRI *** MRI-compatible InterStim was approved by the United States Food and Drug Administration in August 2020 and has been widely *** To evaluate the efficacy,outcomes and complications of the MRI-compatible *** Data of patients who underwent MRI-compatible Medtronic InterStim placement at UPMC Williamsport,University of Minnesota,Advocate Lutheran General Hospital,and University of Wisconsin-Madison was pooled and *** demographics,clinical features,surgical techniques,complications,and outcomes were *** the Reporting of Observational studies in Epidemiology(STROBE)cross-sectional reporting guidelines were *** Seventy-three patients had the InterStim *** mean age was 63.29±12.2 ***-seven(78.1%)patients were females and forty-two(57.5%)patients had *** addition to incontinence,overlapping symptoms included diarrhea(23.3%),fecal urgency(58.9%),and urinary incontinence(28.8%).Fifteen(20.5%)patients underwent Peripheral Nerve Evaluation before proceeding to definite implant ***-two(43.8%)patients underwent rechargeable InterStim ***(4.1%)patients needed removal of the *** of the external lead connection was observed in 7(9.6%)patients after the stage I *** explanation for one patient was due to ***(9.6%)patients had other complications like nerve pain,hematoma,infection,lead fracture,and *** mean follow-up was 6.62±3.5 ***-eight(93.2%)patients reported significant improvement of symptoms on

关键词： Fecal incontinence Sacral nerve stimulation InterStim Magnetic resonance imaging Sacral neuromodulation

Experimental research on the residual stress of polycrystalline diamond compacts for oil drilling

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金刚石与磨料磨具工程 2008年第S1期28卷 92-96页

作者： Xu Gen~1 Xu Guoping~2 Chen Feng~3 Ma Chunde~3 (1.School of Resources and Safety Engineering,Central South University,Changsha 410083,China) (2.king-ray New Materials Science & Technology Co,Ltd,Changsha 410012,China) (3.Testing Center,Central South University,Changsha 410083,China)

Practical experiences gained in the past several years show that the thermal residual stress(TRS) is a main cause leading polycrystalline diamond compacts(PDC) to premature *** is the very important to measure the TRS accurately for optimizing the interface and improving the service performance of *** this paper,the TRS in 1913 flat-interface PDC was measured using improved stress-release method(ISRM). The TRS on the surface of polycrystalline diamond(PCD) table was obtained,which can be used to calculate the radial thermal residual stress(RTRS) at the interface of PCD table via a refutation *** obtained results show that there are compressive residual stress at the PCD table interface and in the most region of PCD table *** exception occurs near the outer diameter of the PCD table,where the PDC begins to bend and put the PCD table surface into a tension state,an undesirable state for a brittle *** ISRM has covered the shortage existing in traditional stress-release method,in which only finite points on the surface of PCD table can be tested for one specimen and one *** as the experimental procedures are,the test results are also very accurate and *** method provides the theoretical and experimental basis for testing TRS of PDC accurately.

关键词： polycrystalline diamond compacts stress release method thermal residual stress finite element analysis

Population Dynamics in an Advective Environment

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Communications on Applied Mathematics and Computation 2024年第1期6卷 399-430页

作者： king-Yeung Lam ray Lee Yuan Lou Department of Mathematics The Ohio State UniversityColumbusOH43210USA School of Mathematical Sciences CMA-Shanghai and MOE-LSCShanghai Jiao Tong UniversityShanghai200240China

We consider a one-dimensional reaction-diffusion equation describing single-and two-species population dynamics in an advective environment,based on the modeling frameworks proposed by Lutscher et *** *** analyze the effect of rate of loss of individuals at both the upstream and downstream *** the single-species case,we prove the existence of the critical domain size and provide explicit formulas in terms of model *** further derive qualitative properties of the critical domain size and show that,in some cases,the critical domain size is either strictly decreasing over all diffusion rates,or monotonically increasing after first decreasing to a *** also consider competition between species differing only in their diffusion *** two species having large diffusion rates,we give a sufficient condition to determine whether the faster or slower diffuser wins the *** also briefly discuss applications of these results to competition in species whose spatial niche is affected by shifting isotherms caused by climate change.

关键词： Reaction-diffusion-advection Critical domain size Competition Climate change

Ferromagnetism and ferroelectricity in a superlattice of antiferromagnetic perovskite oxides without ferroelectric polarization

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npj Computational Materials 2023年第1期9卷 632-637页

作者： Paresh C.Rout Avijeet ray Udo Schwingenschlögl Physical Sciences and Engineering Division(PSE) King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

We study the structural,electronic,and magnetic properties of the SrCrO_(3)/YCrO_(3) superlattice and their dependence on epitaxial *** discover that the superlattice adopts A-type antiferromagnetic(A-AFM)ordering in contrast to its constituents(SrCrO_(3):C-AFM;YCrO_(3):G-AFM)and retains it under compressive strain while becoming ferromagnetic(5μB per formula unit)at+1%*** obtained ferroelectric polarization is significantly higher than that of the R2NiMnO6/La2NiMnO6(R=Ce to Er)series of superlattices[***.5,4021(2014)]due to a large difference between the antipolar displacements of the Sr and Y *** superlattice is a hybrid-improper multiferroic material with a spontaneous ferroelectric polarization(13.5μC/cm^(2))approaching that of bulk BaTiO_(3)(19μC/cm^(2)).The combination of ferromagnetism with ferroelectricity enables multistate memory *** addition,the charge-order-driven p-type semiconducting state of the ferromagnetic phase(despite the metallic nature of SrCrO_(3))is a rare property and interesting for *** Carlo simulations demonstrate a magnetic critical temperature of 90 K for the A-AFM phase without strain and of 115 K for the ferromagnetic phase at+5%strain,for example.

关键词： ferroelectric superlattice ferromagnetic

Analysis of the microbunching instability in a mid-energy electron linac

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Chinese Physics C 2015年第3期39卷 87-94页

作者：黄大章顾强王震张猛 king Yuen Ng Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai Institute of Applied Physics Chinese Academy of Sciences Fermi National Accelerator Laboratory BataviaIllinois 60510 USA

Microbunching instability usually exists in the linear accelerator （linac） of a free electron laser （FEL） facility. If it is not controlled effectively, the beam quality will be damaged seriously and the machine will not operate properly. In the electron linac of a soft X-ray FEL device, because the eiectron energy is not very high, the problem can become even more serious. As a typical example, the microbunching instability in the linac of the proposed Shanghai Soft X-ray Free Electron Laser facility （SXFEL） is investigated in detail by means of both analytical formulae and simulation tools. In the study, a new mechanism introducing random noise into the beam current profile as the beam passes through a chicane-type bunch compressor is proposed. The higher-order modes that appear in the simulations suggest that further improvement of the current theoretical model of the instability is needed.

关键词： Free Electron Laser (FEL) electron linear accelerator (linac) microbunching instability

C-field cosmological models:revisited

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Research in Astronomy and Astrophysics 2016年第12期16卷 75-88页

作者： Anil Kumar Yadav Ahmad Tawfiq Ali Saibal ray Farook Rahaman Iflikar Hossain Sardar Department of Physics United College of Engineering and ResearchGreater Noida 201306India Department of Mathematics King Abdul Aziz UniversityPO Box 80203Jeddah 21589Saudi Arabia&Department of MathematicsFaculty of ScienceA1-Azhar UniversityNasr City11884CairoEgypt Department of Physics Government College of Engineering and Ceramic TechnologyKolkata 700010West BengalIndia Department of Mathematics Jadavpur UniversityKolkata 700032West BengalIndia

We investigate plane symmetric spacetime filled with perfect fluid in the C-field cosmology of Hoyle and Narlikar. A new class of exact solutions has been obtained by considering the creation field C as a function of time only. To get the deterministic solution, it has been assumed that the rate of creation of matter-energy density is proportional to the strength of the existing C-field energy density. Several physical aspects and geometrical properties of the models are discussed in detail, especially showing that some of our solutions of C-field cosmology are free from singularity in contrast to the Big Bang cosmology. A comparative study has been carried out between two models, one singular and the other nonsingular, by contrasting the behaviour of the physical parameters. We note that the model in a unique way represents both the features of the accelerating as well as decelerating universe depending on the parameters and thus seems to provide glimpses of the oscillating or cyclic model of the universe without invoking any other agent or theory in allowing cyclicity.

关键词： cosmology: miscellaneous -- cosmology: theory -- cosmology: early universe

Pulmonary alveolar microlithiasis： an interesting case report with systematic review of Indian literature

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Frontiers of Medicine 2015年第2期9卷 229-238页

作者： Nidhya Ganesan Marie Moses Ambroise Anita Ramdas king Herald Kisku Kulwant Singh Renu G' Boy Varghese Department of Pathology Pondicherry Institute of Medical Sciences Pondicherry 605014 India Department of Pulmonary Medicine Pondicherry Institute of Medical Sciences Pondieherry 605014 India Department of Pathology BPS Government Medical College for Women Sonepat Haryana 131305 India

Pulmonary alveolar microlithiasis is a rare disease characterized by intra-alveolar presence of microliths. This study reports an interesting case of pulmonary alveolar microlithiasis and provides a systematic review of cases reported from India. A 23-year-old female presented with a history of cough, wheeze, chest pain, and episodic wheeze for five months. Pulmonary function tests demonstrated an obstructive pattern, and chest X- ray showed fine micronodular opacities predominantly involving the middle and lower zones of both lungs. Transbronchial lung biopsy revealed the diagnosis. She responded well to inhaled steroid therapy. A systematic review of literature was performed and identified 73 cases of pulmonary alveolar microlithiasis reported from India. The mean （SD） age of the patients was 28.8 （14.9） years, with an almost equal male：female ratio. Many patients were asymptomatic at presentation. Breathlessness and cough were the most common symptoms, and the disease progressed into respiratory failure associated with cor pulmonale. About one-third of the cases were initially misdiagnosed and treated as pulmonary tuberculosis. Extra-pulmonary manifestations and co- morbidities were also evident in our series. This systematic review helps to determine epidemiological and clinical characteristics of pulmonary alveolar microlithiasis. Further research is needed to elucidate the etiopathogenesis, diagnosis, and therapeutic options, which are beneficial in developing and identifying cost- effective treatment for pulmonary alveolar microlithiasis.

关键词： pulmonary alveolar microlithiasis alveolar microlithiasis microliths rare diseases

The Salt Overly Sensitive （SOS） Pathway： Established and Emerging Roles

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Molecular Plant 2013年第2期6卷 275-286页

作者： Hongtao Ji José M. Pardo Giorgia Batelli Michael J. Van Oosten ray A. Bressan Xia Li The State Key Laboratory of Plant Cell and Chromosome Engineering Center of Agricultural Resources Research Institute of Genetics andDevelopmental Biology Chinese Academy of Sciences Shijiazhuang Hebei 050021 PR China Instituto de Recursos Naturales y Agrobiologia Consejo Superior de Investigaciones Cientificas Sevilla-41012 Spain CNR Institute of Plant Genetics (CNR-IGV) Via Universita' i33 80055 Portici Italy Department of Agricultural Engineering and Agronomy University of Naples Federico II Via Universit~ 100 80055 Portici Italy Center for Plant Environmental Stress Physiology Purdue University West Lafayette IN 47907-2010 USA Department Biological Sciences King Abdulaziz University Kingdom of Saudi Arabia

Soil salinity is a growing problem around the world with special relevance in farmlands. The ability to sense and respond to environmental stimuli is among the most fundamental processes that enable plants to survive. At the cellular level, the Salt Overly Sensitive （SOS） signaling pathway that comprises SOS3, SOS2, and SOS1 has been proposed to mediate cellular signaling under salt stress, to maintain ion homeostasis. Less well known is how cellularly heterog- enous organs couple the salt signals to homeostasis maintenance of different types of cells and to appropriate growth of the entire organ and plant. Recent evidence strongly indicates that different regulatory mechanisms are adopted by roots and shoots in response to salt stress. Several reports have stated that, in roots, the SOS proteins may have novel roles in addition to their functions in sodium homeostasis. SOS3 plays a critical role in plastic development of lateral roots through modulation of auxin gradients and maxima in roots under mild salt conditions. The SOS proteins also play a role in the dynamics of cytoskeleton under stress. These results imply a high complexity of the regulatory networks involved in plant response to salinity. This review focuses on the emerging complexity of the SOS signaling and SOS protein functions, and highlights recent understanding on how the SOS proteins contribute to different responses to salt stress besides ion homeostasis.

关键词： auxin ion homeostasis root system architecture salt stress the SOS signaling pathway.

Parallel and Hierarchical Mode Association Clustering with an R Package <i>Modalclust</i>

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Open Journal of Statistics 2014年第10期4卷 826-836页

作者： Yansong Cheng Surajit ray Quantitative Science Glaxo Smith Kline King of Prussia King of Prussia Pennsylvania USA School of Mathematics and Statistics Glasgow University Glasgow UK

Modalclust is an R package which performs Hierarchical Mode Association Clustering (HMAC) along with its parallel implementation over several processors. Modal clustering techniques are especially designed to efficiently extract clusters in high dimensions with arbitrary density shapes. Further, clustering is performed over several resolutions and the results are summarized as a hierarchical tree, thus providing a model based multi resolution cluster analysis. Finally we implement a novel parallel implementation of HMAC which performs the clustering job over several processors thereby dramatically increasing the speed of clustering procedure especially for large data sets. This package also provides a number of functions for visualizing clusters in high dimensions, which can also be used with other clustering softwares.

关键词： Modality Kernel Density Estimate Mode Clustering