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Towards High-Dimensional Entanglement in Path:Photon-Source Produced from a Two-Dimensional Atomic Cloud

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Chinese Physics Letters 2021年第8期38卷 38-42页

作者： Shaoxing Liu Xuanying Lai Ce Yang J.f.chen State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and TechnologyShenzhen 518055China

A photon source with high-dimensional entanglement is able to bring increasing capacity of information in quantum *** dimensionality is determined by the chosen degree of freedom of the photons and is limited by the complexity of the physical *** we propose a new type of high-dimensional entangled photon source,generated via path-indistinguishable scheme from a two-dimensional atomic cloud,which is prepared in a magneto-optical *** verify the photon source,we demonstrate experimentally the quantum state of the single photons heralded by its partner photon,with homodyne tomographic technology.

关键词： quantum verify dimensionality

Narrowband photon pair generation and waveform reshaping

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frontiers in Biology 2012年第5期7卷 494-503页

作者： J.f.chen Shengwang Du Department of Physics East China Normal UniversityShanghai 200241China Department of Physics The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

In this article, we review on narrowband photon pairs produced in nonlinear crystals, and especially in atomic ensembles. In atomic ensembles, ＂write-read＂ process in pulse mode and spontaneous four-wave mixing process （SfWM） in continuous mode are two popular photon pair generation schemes. We specifically discuss the experimental works with continuous SfWM scheme in cold atomic ensembles. Photon pairs produced in these systems are characteristic of controllable long coherence time, and therefore are accessible with direct temporal modulation. We elaborate on the recent techniques on modulation and waveform reshaping of narrow-band paired photons.

关键词： narrowband photon pair cold atomic ensembles spontaneous four-wave mixing wave-form reshaping

Accelerating peripheral nerve regeneration using electrical stimulation of selected power spectral densities

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Neural Regeneration Research 2022年第4期17卷 781-782页

作者： Wei-Ming Yu Madelyn A.McCullen Vincent C.-f.chen Department of Biology Loyola University of ChicagoChicagoILUSA Engineering Program Loyola University of ChicagoChicagoILUSA

Peripheral nerve injuries are common consequences of extremity trauma or chronic compression with a prevalence of 43.8 per1 million people(on average)reported in the U nited States annually,accompanied by a yearly inc... 详细信息

关键词： stimulation injuries annually

Experimental Podophyllotoxin (Bajiaolian) Poisoning:——Ⅱ. Effects on the Liver, Intestine, Kidney, Pancreas and Testis

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Biomedical and Environmental Sciences 1992年第4期5卷 293-302页

作者： LOUISW.CHANG C.M.YANG C.f.chen J.f.DENG Departments of Pathology Pharmacology and Toxicology University ora rkansas for Medical Sciences Little RockThe Chang-Gung Medical College Kwai-sanNational Research Institute of Chinese MedicineThe Veteran's General Hospital-Taipei AR 72205TaipeiTaipeiTaipei Taiwan China

Young male rats were orally intubated with podophyllotoxin: Group I, control animals, orally fed with vehicle only; Group Ⅱ, fed with an initial dose of 5 ***-1 b.w., followed by a daily dose of 1.67 mg-kg-1 b.w. for 7d. Group III, fed with an initial dose of 15 ***-1 b.w., followed by a daily dose of 5 ***-1 b.w. for 7d. All animals were sacrificed 72 h after the last dosing.Histopathological examination revealed dose-related fatty change of the liver, atrophy andi degenerative changes of the intestinal epithelial linings and testicular seminiferous tubules. Depletion of the pancreatic acinar cell granules was also apparent in the Group III animals. No pathology, however, was observed in the kidneys. The present study demonstrated for the first time degenerative changes in the liver, intestine, testis, and pancreas of animals ingested podophyllotoxin. These pathological changes correlate well with the clinical signs/symptoms of abnormal liver function, abdominal pain and diarrhea, and reduced serum amylase in humans poisonded by podophyllum. Inhibition of protein synthesis and mitosis (disruption of microtubules) are believed to be the underlying mechanisms of these changes observed in the animals intoxicated by. podophyllotoxin.

关键词： Bajiaolian Effects on the Liver Experimental Podophyllotoxin Kidney Poisoning

Experimental Podophyllotoxin (Bajiaolian) Poisoning:——Ⅰ. Effects on the Nervous System

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Biomedical and Environmental Sciences 1992年第4期5卷 283-292页

作者： LOUIS W.CHANG C.M.YANG C.f.chen J.f.DENG Departments of Pathology Pharmacology and Toxicology University of Arkansas for Medical Sciences Little RockThe Chang-Gung Medical College Kwai-sanNational Research Institute of Chinese MedicineThe Veteran General Hospital AR 72205TaipeiTaipeiTaipei Taiwan China

Bajiaolian, one of the species in the Mayapple family ( Podophyllum pelatum ), has been widely used as a traditional Chinese herbal medicine for the remedies of snake bites, general weakness, poisons, condyloma accuminata, lymphadenopathy, and certain tumors in China. In Western medicine, Podophyllum was first used medically as a laxative in the early 19th century. Since 1940, the resin of podophyllum has also been used topically for various skin lesions, such as warts and condyloma. Human poisonings have been reported.An animal model was established to investigate the neurotoxic effects of Bajiaolian. Podophyllotoxin, the major active ingredient in Podophyllum, was injected (ip) to young adult male rats at doses of 0, 5, 10, or 15 mg-kg-1 b.w.. The animals were sacrificed 72 h after injection.Neuronal changes were readily observable in animals treated with 10 or 15 mg-kg-1 of the toxin. Edematous changes of the anterior horn motoneurons were observed in the spinal cord. No neuronal necrosis was found. The type of neuronal swelling is believed to be only a transient change and would probably subside with time if no further assaults occur. More serious and perhaps longer term of changes were found in the dorsal ganglion neurons and the nerve fibers (axons) in the central and peripheral nervous system. Severe depletion of the Nissl substance (RNA/polyribosomes) was observed in the dorsal root ganglion neurons. Alterations in these sensory neurons would give rise to and correlate with the sensory disturbances experienced by the patients. Bodian staining also revealed a dose-related increase in the coarseness (thickness) of the nerve fibers (axons) in the cerebellum, cerebral cortex, brainstem, and spinal cord.This is the first scientific study showing the neurotoxicity of Bajiaolian, a commonly used Chinese herbal medicine. Toxicities on other organ systems by this drug certainly exist. Caution should be exercised in the dispensing and usa

关键词： Bajiaolian Effects on the Nervous System Experimental Podophyllotoxin Poisoning

Enhanced modeling of latent heat flux from urban surfaces in the Noah/single-layer urban canopy coupled model

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Science China Earth Sciences 2014年第5期57卷 2408-2416页

作者： MIAO ShiGuang chen fei Institute of Urban Meteorology China Meteorological Administration National Center for Atmospheric Research

The numerical modeling of the impacts of urban buildings in mesoscale meteorological models has gradually improved in recent years. Correctly representing the latent heat flux from urban surfaces is a key issue in urban land-atmosphere coupling studies but is a common weakness in current urban canopy models. Using the surface energy balance data at a height of 140 m from a 325 m meteorological tower in Beijing, we conducted a 1-year continuous off-line simulation by using a coupled land surface model and a single-layer urban canopy model and found that this model has a relatively large systematic error for simulated latent heat flux. To improve the numerical method for modeling latent heat flux from urban surfaces, we combined observational analysis and urban land surface model to derive an oasis effect coefficient for urban green areas; to develop a temporal variation formula for water availability in urban impervious surfaces; and to specify a diurnal profile and the maximum values of anthropogenic latent heat release for four seasons. These results are directly incorporated into the urban land surface model to improve model performance. In addition, this method serves as a reference for studies in other urban areas.

关键词： urban surface energy balance latent heat flux numerical simulation land surface model urban canopy model

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A new season of Chinese cardiovascular pharmacology research

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Acta Pharmacologica Sinica 2005年第3期26卷 257-258页

作者： Alex f chen Department of Pharmacology and Toxicology Michigan State University East Lansing MI 48824-1317 USA

In this issue of Acta Pharmacologica Sinica,we are proudto present to our readers and colleagues a series of reviewarticles from several Chinese-American university laborato-ries in *** reviews are a collection of the... 详细信息

关键词： A new season of Chinese cardiovascular pharmacology research

Time-Independent finite Difference and Ghost Cell Method to Study Sloshing Liquid in 2D and 3D Tanks with Internal Structures

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Communications in Computational Physics 2013年第3期13卷 780-800页

作者： C.H.Wu O.M.faltinsen B.f.chen Department of Marine Environment and Engineering National Sun Yat-Sen UniversityKaohsiung 804Taiwan Certre for Ships and Ocean Structures&Department of Marine Technology NTNUTrondheim 7491Norway

A finite difference scheme with ghost cell technique is used to study viscous fluid sloshing in 2D and 3D tanks with internal *** Navier-Stokes equations in a moving coordinate system are derived and they are mapped onto a time-independent and stretched *** staggered grid is used and the revised SIMPLEC iteration algorithm is *** developed numerical model is rigorously validated by extensive comparisons with reported analytical,numerical and experimental *** present numerical results were also validated through an experiment setup with a tank excited by an inclined horizontal excitation or a tank mounted by a vertical *** method is then applied to a number of problems including sloshing fluid in a 2D tank with a bottom-mounted baffle and in a 3D tank with a vertical *** phenomena of diagonal sloshing waves affected by a vertical plate are investigated in detail in this *** effects of internal structures on the resonant frequency of a tank with liquid are discussed and the present developed numerical method can successfully analyze the sloshing phenomenon in 2D or 3D tanks with internal structures.

关键词： Liquid sloshing baffle plate time-independent finite difference ghost cell

Data-driven evaluation of fatigue performance of additive manufactured parts using miniature specimens

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Journal of Materials Science & Technology 2019年第6期35卷 1137-1146页

作者： H.Y. Wan G.f. chen C.P. Li X.B. Qi G.P. Zhang Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China School of Materials Science and Engineering University of Science and Technology of China Shenyang 110016 China Materials Manufacturing Qualification Group Corporate Technology Siemens Ltd. China Beijing 100102 China State Key Laboratory of Tribology Tsinghua University Beijing J00084 China

This overview firstly introduces the state-of-the-art research progress in length scale-related fatigue performance of conventionally-fabricated metals evaluated by miniature specimens. Some key factors for size effects sensitive to microstructures including the specimen thickness, grain size and a ratio between them are highlighted to summarize some general rules for size effects. Then, ongoing research progress and new challenges in evaluating the fatigue performance of additive manufactured parts controlled by location-specific defects, microstructure heterogeneities as well as mechanical anisotropy using miniature specimen testing technique are discussed and addressed. finally, a potential roadmap to establish a data-driven evaluation platform based on a large number of miniature specimen-based experiment data,theoretical computations and the ’big data’ analysis with machine learning is proposed. It is expected that this overview would provide a novel strategy for the realistic evaluation and fast qualification of fatigue properties of additive manufactured parts we have been facing to.

关键词： Additive manufacturing Miniature specimen fatigue Size effect Location-specific Data analysis