检索结果-南通市图书馆

Nano-Micro Letters 2024年第1期16卷 106-130页

作者： Jun Hu mitsumasa iwamoto Xiangyu Chen CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083People’s Republic of China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Department of Physical Electronics Tokyo Institute of Technology2‑12‑1 S3‑33 O‑OkayamaMeguro‑KuTokyo 152‑8552Japan

The triboelectric nanogenerator(TENG)can effectively collect energy based on contact electrification(CE)at diverse interfaces,including solid–solid,liquid–solid,liquid–liquid,gas–solid,and gas–*** enables energy harvesting from sources such as water,wind,and *** this review,we provide an overview of the coexistence of electron and ion transfer in the CE *** elucidate the diverse dominant mechanisms observed at different interfaces and emphasize the interconnectedness and complementary nature of interface *** review also offers a comprehensive summary of the factors influencing charge transfer and the advancements in interfacial modification ***,we highlight the wide range of applications stemming from the distinctive characteristics of charge transfer at various ***,this review elucidates the future opportunities and challenges that interface CE may *** anticipate that this review can offer valuable insights for future research on interface CE and facilitate the continued development and industrialization of TENG.

关键词： Contact electrification Interfaces Triboelectric nanogenerators Diversified applications

Optical second-harmonic generation measurement for probing organic device operation

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2015年第1期4卷 99-108页

作者： Takaaki Manaka mitsumasa iwamoto Department of Physical Electronics Tokyo Institute of Technology2-12-1 O-okayamaMeguro-kuTokyo 152-8552Japan

We give a brief overview of the electric-field induced optical second-harmonic generation(EFISHG)technique that has been used to study the complex behaviors of organic-based *** analyzing EFISHG images of organic field-effect transistors,the in-plane two-dimensional distribution of the electric field in the channel can be *** susceptibility tensor of the organic semiconductor layer and the polarization of the incident light are considered to determine the electric field *** imaging can effectively evaluate the distribution of the vectorial electric field in organic films by selecting a light *** the time-resolved technique,measurement of the electric field originating from the injected carriers allows direct probing of the carrier motion under device operation,because the transient change of the electric field distribution reflects the carrier *** applications of the EFISHG technique to organic electronic devices are reviewed.

关键词： electric field optical second-harmonic generation semiconductor device

Epigenetic memory of drug exposure history controls neural stem cell quiescence in the adult brain

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第4期19卷 711-712页

作者： Masakazu iwamoto Taito Matsuda Department of Stem Cell Biology and Medicine Graduate School of Medical SciencesKyushu UniversityFukuokaJapan

Neural stem cells(NSCs)are the source of all neurons and glial cells(astrocytes and oligodendrocytes)in the central nervous *** adult mammalian brain retains NSCs in the subgranular zone of the dentate gyrus in the hippocampus and ventricular subventricular zone lining the lateral ventricle(Olpe and Jessberger,2022).Adult NSCs in rodents are preserved throughout life and continuously produce new neurons that integrate into the pre-existing neuronal network.

关键词： neural integrate continuously

Synthesis of CZTS nanocrystal and enhancement of mobility by ligand exchange

在线全文

学校读者我要写书评

暂无评论

Synthesis of CZTS nanocrystal and enhancement of mobility by...

Computationally Efficient Large-Eddy Simulation of Periodic Unsteady Flow using Harmonic Balance Method

第二届新型太阳能电池学术研讨会

作者： Kentaro Abe Songping Luo Xin Li Heping Shen Jianbao Li mitsumasa iwamoto Hong Lin State Key Laboratory of New Ceramics & Fine Processing Department of Material Science and Engineering Tsinghua University

Pure kesterite CuZnSnS(CZTS)nanocrystals with an average diameter of about 15-20 nm were successfully synthesized by hot-injection method(Figure 1),which was confirmed by comprehensive characterizations including TEM,...

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

Journal of Thermal Science 2022年第1期31卷 62-71页

作者： YUMA iwamoto SUSUMU Teramoto KOJI Okamoto Department of Aeronautics and Astronautics University of TokyoTokyo 113-8656Japan Department of Advanced Energy University of TokyoTokyo 113-8656Japan

To improve the efficiency and fidelity of the numerical analysis for cascade flutter, we propose an efficient scale-resolving simulation method dedicated to time-periodic flows by incorporating the harmonic balance approach into the large-eddy simulation. This method combined convergence calculations of the steady-state problem based on the harmonic balance method for periodic components, and the nonlinear time-marching method for turbulent fluctuations. Using the proposed method, deterministic periodic components and stochastic turbulent fluctuations were calculated simultaneously, and the effect of turbulent fluctuations on deterministic periodic components was directly calculated without using turbulence models. In this paper, we explain the algorithm and feature of this simulation technique and present the results of the computation for channel flow excited in the streamwise direction as an analysis example using the proposed method. In order to validate the proposed method, an analysis of sinusoidally pulsating channel flow at the central friction-velocity Reynolds numbers Rer = 180 was conducted, confirming that the amplitude and phase of the mean velocity oscillation computed by the proposed method were in good agreement with those of the conventional LES. The present calculation achieved an order of magnitude improvement in computational efficiency compared to conventional LES.

关键词： harmonic balance LES turbulent channel flow

ADAM8 inactivation retards intervertebral disc degeneration in mice

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第3期11卷 91-94页

作者： Zuozhen Tian Frances S.Shofer Mingyue Fan Alec Z.Sandroni Lutian Yao Lin Han Ling Qin Motomi Enomoto-lwamoto Yejia Zhang Department of Physical Medicine&Rehabilitation Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA19146USA Department of Emergency Medicine Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA Department of Orthopedic Surgery Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA School of Biomedical Engineering Science&Health SystemsDrexel UniversityPhiladelphiaPA 19104USA Department of Orthopedics/Sports Medicine and Joint Surgery the First Hospital of China Medical UniversityShenyangLiaoning 110001China Department of Orthopedics University of Maryland School ofMedicineBaltimoreMD21201USA Section of Rehabilitation Medicine Corporal Michael J.Crescenz Veterans Affairs Medical CenterPhiladelphiaPA 19104USA

ADAM8 has been identified as the fibronectin-cleaving enzyme in human degenerative intervertebral disc(IVD)tissues.^(1)Increase of the active form of ADAM8 and its cleavage product,fibronectin fragment,correlated with an increased degree of IVD degeneration.1 Furthermore,fibronectin fragments have been shown to accelerate the progression of IVD degeneration.^(2)These findings suggest that ADAM8 may play a role in degenerative disc disease,a clinical problem with tremendous socioeconomic burdens in the United States.

关键词： ADAM8 degeneration intervertebral

Nutrient-regulated dynamics of chondroprogenitors in the postnatal murine growth plate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bone Research 2023年第2期11卷 340-353页

作者： Takeshi Oichi Joe Kodama Kimberly Wilson Hongying Tian Yuka Imamura Kawasawa Yu Usami Yasushi Oshima Taku Saito Sakae Tanaka Masahiro iwamoto Satoru Otsuru Motomi Enomoto-iwamoto Department of Orthopedics School of MedicineUniversity of MarylandBaltimoreMD21201USA Sensory&Motor System Medicine Faculty of MedicineThe University of TokyoBunkyo-kuTokyo1138655Japan Department of Orthopedics Teikyo University School of MedicineTokyo1738608Japan Department of Biochemistry and Molecular Biology Pennsylvania State University College of MedicineHersheyPA17033USA Department of Oral Pathology Osaka University Graduate School of DentistrySuitaOsaka5650871Japan

Longitudinal bone growth relies on endochondral ossification in the cartilaginous growth plate,where chondrocytes accumulate and synthesize the matrix scaffold that is replaced by *** chondroprogenitors in the resting zone maintain the continuous turnover of chondrocytes in the growth *** is a leading cause of growth retardation in children;however,after recovery from nutrient deprivation,bone growth is accelerated beyond the normal rate,a phenomenon termed catch-up *** nutritional status is a known regulator of long bone growth,it is largely unknown whether and how chondroprogenitor cells respond to deviations in nutrient ***,using fate-mapping analysis in Axin2CreERT2 mice,we showed that dietary restriction increased the number of Axin2+chondroprogenitors in the resting zone and simultaneously inhibited their *** nutrient deficiency was resolved,the accumulated chondroprogenitor cells immediately restarted differentiation and formed chondrocyte columns,contributing to accelerated ***,we showed that nutrient deprivation reduced the level of phosphorylated Akt in the resting zone and that exogenous IGF-1 restored the phosphorylated Akt level and stimulated differentiation of the pooled chondroprogenitors,decreasing their *** study of Axin2CreERT2 revealed that nutrient availability regulates the balance between accumulation and differentiation of chondroprogenitors in the growth plate and further demonstrated that IGF-1 partially mediates this regulation by promoting the committed differentiation of chondroprogenitor cells.

关键词： progenitor plate maintain

Bone and soft tissue tumors presenting as sciatic notch dumbbell masses: A critical differential diagnosis of sciatica

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Oncology 2016年第5期7卷 414-419页

作者： Yoshihiro Matsumoto Tomoya Matsunobu Katsumi Harimaya Kenichi Kawaguchi mitsumasa Hayashida Seiji Okada Toshio Doi Yukihide iwamoto Department of Orthopaedic Surgery Graduate School of Medical Sciences Kyushu University Department of Orthopaedic Surgery Kyushu University Beppu Hospital

AIM To study the clinical findings and characteristic features in sciatic notch dumbbell tumors(SNDTs).METHODS We retrospectively reviewed the clinical outcomes and characteristic features of consecutive cases of SNDTs(n = 8). RESULTS Buttock masses occurred in three patients with SNDT(37.5%). Severe buttock tenderness and pain at rest were observed in seven patients with SNDTs(87.5%). Remarkably, none of the patients with SNDTs experienced back pain. Mean tumor size was 8.4 ± 2.0 cm(range, 3.9 to 10.6 cm) and part of the tumor mass was detected in 2 patients in the sagittal view of lumbar magnetic resonance imaging(MRI).CONCLUSION The clinical information regarding to SNDTs is scarce. The authors consider that above mentioned characteristic findings may facilitate the suspicion of pelvic pathology and a search for SNDT by MRI or computed tomography should be considered in patients presenting with sciatica without evidence of spinal diseases.

关键词： Sciatic notch Dumbbell masses Sciatica Differential diagnosis Bone and soft tissue tumor

Reaction-Diffusion Algorithm for Quantitative Analysis of Periodic V-Shaped Bundles of Hair Cells in the Inner Ear

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biosciences and Medicines 2022年第3期10卷 240-251页

作者： Hiroto Shoji Ryo iwamoto Department of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan

Columnar outer hair cells of the inner ear form V-shaped bundles, which are arranged in three rows in the cochlea. If the formation of these V-shaped bundles is disturbed, sensorineural hearing loss occurs. To quantify the distribution of V-shaped bundles, the use of a Turing-type reaction-diffusion (RD) system, including anisotropic diffusion, should be considered. We found that a periodic triangle pattern appears based on the anisotropy in the RD system. Then, using the proposed RD system, the image of the V-shaped bundle was examined. The results showed that the correlation between the RD pattern and V-shape bundles not only classifies the experimental result but also significantly differs in the number of directional changes in a set of V-shape bundle. Therefore, this process can help quantify the images of V-shaped bundles.

关键词： Reaction-Diffusion Turing Triangle Inner Ear

Effect of impact deformation on shape recovery behavior in Fe-Mn-Si shape memory alloy under shape memory training process with cyclic thermo-mechanical loading

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2021年第7期64卷 1389-1400页

作者： SUN Qian CAO Bo iwamoto Takeshi SUO Tao Graduate School of Engineering Hiroshima UniversityHigashi-Hiroshima739-8527Japan Cluster of Excellence livMatS@FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies University of FreiburgFreiburgD-79110Germany Academy of Science and Technology Hiroshima UniversityHigashi-Hiroshima739-8527Japan School of Aeronautics Northwestern Polytechnical UniversityXi’an710072China

In the past studies, it has been discovered that the shape memory effect(SME) in the Fe-Mn-Si shape memory alloy(Fe-SMA)can gradually be enhanced by a pre-process called as shape memory training process under cyclic thermo-mechanical *** the other hand, it has been shown that the SME of Fe-SMA can also be affected by changing the strain rate. Therefore, it is possible to improve the SME by combining the strain rate sensitivity and shape memory training process. However, the improvement of SME caused by the training process under impact condition is still unclear. For the training process under impact condition, it is difficult to interrupt the test at the desired strain level due to many reflections of stress waves, which reload the specimen from the free ends. In this paper, to obtain reliable experimental results of SME after the training process under impact condition, the stress waves after first loading are eliminated by the double momentum-trap structure introduced into the impact tensile testing apparatus based on the split Hopkinson pressure bar method. In order to achieve an optimum design of the structure used in experiments, the finite element simulation of the structure is performed. Then, tensile tests in the training process of Fe-28Mn-6Si-5Cr alloy at different strain rates including the impact level are conducted and temperature change of the specimen is measured during training and heating process. As a result, the improvement of SME in the alloy after the training process under quasi-static and impact loading is compared with that under quasi-static loading through verification processes.

关键词： Fe-Mn-Si shape memory alloy training cyclic thermo-mechanical process split Hopkinson pressure bar momentumtrap impact deformation