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Electron push-pull effects induced performance promotion in covalent organic polymer thin films-based memristor for neuromorphic application

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Chinese Chemical Letters 2024年第5期35卷 227-231页

作者： Panke Zhou Hong Yu Mun Yin Chee Tao Zeng Tianli Jin Hongling Yu Shuo Wu Wen Siang lew Xiong Chen State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371Singapore Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore

Covalent organic polymer(COP)thin film-based memristors have generated intensive research interest,but the studies are still in their ***,by controlling the content of hydroxyl groups in the aldehyde monomer,Py-COP thin films with different electronic push-pull effects were fabricated bearing distinct memory performances,where the films were prepared by the solid-liquid interface method on the ITO substrates and further fabricated as memory devices with ITO/Py-COPs/Ag *** Py-COP-1-based memory device only exhibited binary memory behavior with an ON/OFF ratio of 1:10^(1.87).In contrast,the device based on Py-COP-2 demonstrated ternary memory behavior with an ON/OFF ratio of 1:10^(0.6):10^(3.1) and a ternary yield of 55%.The ternary memory mechanism of the ITO/Py-COP-2/Ag memory device is most likely due to the combination of the trapping of charge carriers and conductive ***,the Py-COPs-based devices can successfully emulate the synaptic potentiation/depression behavior,clarifying the programmability of these devices in neuromorphic *** results suggest that the electronic properties of COPs can be precisely tuned at the molecular level,which provides a promising route for designing multi-level memory devices.

关键词： Covalent organic polymers Push-pull effects Multi-level memory Memristor

Evaluation of Clinician Training in Autism Screening, Care Management, and Patient Education

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Open Journal of Pediatrics 2024年第3期14卷 488-513页

作者： Belinda O’Hagan Julie White Ilana Hardesty Rachel Amgott Candice Bangham Xinyang Liu Alyson Codner Amy Ursitti alana Chandler Sarah Foster Marilyn Augustyn Jacey Greece Division of Developmental and Behavioral Pediatrics Department of Pediatrics Boston Medical Center Boston United States of America Boston University Chobanian & Avedisian School of Medicine Boston United States of America Department of Community Health Sciences Boston University School of Public Health Boston United States of America

Objective: The demand for pediatric developmental evaluations has far exceeded the workforce available to perform them, which creates long significant wait times for services. A year-long clinician training using the Extension for Community Healthcare Outcomes (ECHO®) model with monthly meetings was conducted and evaluated for its impact on primary care clinicians’ self-reported self-efficacy, ability to administer autism screening and counsel families, professional fulfillment, and burnout. Methods: Participants represented six community health centers and a hospital-based practice. Data collection was informed by participant feedback and the Normalization Process Theory via online surveys and focus groups/interviews. Twelve virtual monthly trainings were delivered between November 2020 and October 2021. Results: 30 clinicians participated in data collection. Matched analyses (n = 9) indicated statistically significant increase in self-rated ability to counsel families about autism (Pre-test Mean = 3.00, Post-test Mean = 3.89, p = 0.0313), manage autistic patients’ care (Pre-test Mean = 2.56, Post-test Mean = 4.11, p = 0.0078), empathy toward patients (Pre-test Mean = 2.11, Post-test Mean = 1.22, p = 0.0156) and colleagues (Pre-test Mean = 2.33, Post-test Mean = 1.22, respectively, p = 0.0391). Unmatched analysis revealed increases in participants confident about educating patients about autism (70.59%, post-test n = 12 vs. 3.33%, pre-test n = 1, p = 0.0019). Focus groups found increased confidence in using the term “autism”. Conclusion: Participants reported increases in ability and confidence to care for autistic patients, as well as empathy toward patients and colleagues. Future research should explore long-term outcomes in participants’ knowledge retention, confidence in practice, and improvements to autism evaluations and care.

关键词： Autism Spectrum Disorder Program Evaluation Case-Based Training Provider Burnout Continuing Medical Education

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插电式混动车在中国驶入快车道

商业周刊（中文版） 2024年第4期 36-38页

作者： Linda lew Chunying Zhang Jinshan Hong 融汐(译) 不详

●随着中国电动汽车市场总体增长放缓,价格较为便宜、也可使用汽油的车型开始流行山姆·钟(Sam Zhong)最近开始挑选自己的第一辆车。他试驾了很多款汽油车和少量的纯电动车型,最终选定了比亚迪的插电式混合动力车“秦”。这款车总价不... 详细信息

●随着中国电动汽车市场总体增长放缓,价格较为便宜、也可使用汽油的车型开始流行山姆·钟(Sam Zhong)最近开始挑选自己的第一辆车。他试驾了很多款汽油车和少量的纯电动车型,最终选定了比亚迪的插电式混合动力车“秦”。这款车总价不到10万元人民币(约合1.39万美元),符合他的预算;可以在电池驱动的电机和传统内燃机之间切换的能力意味着,他可以在日常通勤时省钱,而长途旅行时却不用担心充电问题。

关键词：长途旅行电池驱动纯电动车汽油车比亚迪电动汽车增长放缓插电式混合动力车

Synthesis and electrochemical properties of dual doped spinels LiNi_xAl_yMn_(2-x-y)O_4 via facile novel chelated sol–gel method as possible cathode material for lithium rechargeable batteries

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Journal of Energy Chemistry 2017年第1期26卷 101-114页

作者： R.Thirunakaran Gil Hwan lew Won-Sub Yoon CSIR-Central Electrochemical Research Institute Sungkyunkwan University Department of Energy Science

LiMnOand LiNiAlyMnO（x= 0.50;y = 0.05-0.50） powders have been synthesized via facile solgel method using Behenic acid as active cheiating *** synthesized samples are subjected to physical characterizations such as thermo gravimetric analysis（TG/DTA）,X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FT-IR）,field-emission scanning electron microscopy（FESEM）,transmission electron microscopy（TEM） and electrochemical studies viz.,galvanostatic cycling properties,electrochemical impedance spectroscopy（EIS） and differential capacity curves（dQ/dE）.Finger print XRD patterns of LiMnOand LiNiAlMnOfortify the high degree of crystallinity with better phase *** images of the undoped pristine spinel illustrate uniform spherical grains surface morphology with an average particle size of 0.5 μm while Ni doped particles depict the spherical grains growth（50nm） with ice-cube surface *** images of the spinel LiMnOshows the uniform spherical morphology with particle size of（100 nm） while low level of Al-doping spinel（LiNio.5Alo.05Mn1.45O4） displaying cloudy particles with agglomerated particles of（50nm）.The LiMnOsamples calcined at 850℃ deliver the discharge capacity of 130 mAh/g in the first cycle corresponds to 94%coiumbic efficiency with capacity fade of 1.5 mAh/g/cycle over the investigated 10 *** all four dopant compositions investigated,LiNiAlMnOdelivers the maximum discharge capacity of 126 mAh/g during the first cycle and shows the stable cycling performance with low capacity fade of 1 mAh/g/cycle（capacity retention of 92%） over the investigated 10 *** impedance studies of spinel LiMnOand LiNiAlMnOdepict the high and low real polarization of 1562 and 1100 Ω.

关键词： Multi-doping Sol–gel method Behenic acid Differential capacity Spinel cathode

Designing architected materials for mechanical compression via simulation, deep learning, and experimentation

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npj Computational Materials 2023年第1期9卷 1534-1542页

作者： Andrew J.lew Kai Jin Markus J.Buehler Laboratory for Atomistic and Molecular Mechanics(LAMM) Massachusetts Institute of Technology77 Massachusetts Ave.CambridgeMA 02139USA Department of Chemistry Massachusetts Institute of Technology77 Massachusetts Ave.CambridgeMA 02139USA Center for Computational Science and Engineering Schwarzman College of ComputingMassachusetts Institute of Technology77 Massachusetts Ave.CambridgeMA 02139USA

Architected materials can achieve enhanced properties compared to their plain *** architecting serves as a powerful design lever to achieve targeted behavior without changing the base ***,the connection between architected structure and resultant properties remains an open field of great interest to many fields,from aerospace to civil to automotive ***,we focus on properties related to mechanical compression,and design hierarchical honeycomb structures to meet specific values of stiffness and compressive *** do so,we employ a combination of techniques in a singular workflow,starting with molecular dynamics simulation of the forward design problem,augmenting with data-driven artificial intelligence models to address the inverse design problem,and verifying the behavior of de novo structures with experimentation of additively manufactured *** thereby demonstrate an approach for architected design that is generalizable to multiple material properties and agnostic to the identity of the base material.

关键词： thereby additive starting

Management and Treatment of Hepatocellular Carcinoma with Immunotherapy:A Review of Current and Future Options

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Journal of Clinical and Translational Hepatology 2020年第2期8卷 168-176页

作者： Shima Ghavimi Tehila Apfel Hamed Azimi alana Persaud Nikolaos T.Pyrsopoulos Division of Gastroenterology and Hepatology Department of MedicineRutgers New Jersey Medical SchoolNewarkNJUSA

With mortality rates of liver cancer doubling in the last 20 years, this disease is on the rise and has become the fifth most common cancer in men and the seventh most common cancer in women. Hepatocellular carcinoma (HCC) represents approximately 90% of all primary liver cancers and is a major global health concern. Patients with HCC can be managed curatively with surgical resection or with liver transplantation, if they are diagnosed at an early stage. Unfortunately, most patients with HCC present with ad-vanced stages of the disease and have underlying liver dysfunction, which allows only 15%of patients to be eligible for curative treatment. Several different treatment modal-ities are available, including locoregional therapy radiofre-quency ablation, microwave ablation, percutaneous ethanol injection, trans-arterial chemoembolization, transarterial radio-embolization, cryoablation, radiation therapy, stereo-tactic radiotherapy, systemic chemotherapy, molecularly targeted therapies, and immunotherapy. Immunotherapy has recently become a promising method for inhibiting HCC tumor progression, recurrence, and metastasis. The term"Immunotherapy"is a catch-all, encompassing a wide range of applications and targets, including HCC vaccines, adoptive cell therapy, immune checkpoint inhibitors, and use of oncolytic viruses to treat HCC. Immunotherapy in HCC is a relatively safe option for treating patients with advanced disease in the USA who are either unable to receive or failed sorafenib/lenvatinib therapy and thus may offer an addi-tional survival benefit for these patients. The purpose of this review is to elaborate on some of the most recent advance-ments in immunotherapy.

关键词： Carcinoma Hepatocellular Immunotherapy Immunotherapy Adoptive Nivolumab

A case of branch retinal artery obstruction complicated after anterior ischemic optic neuropathy

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International Journal of Ophthalmology(English edition) 2011年第4期4卷 447-448页

作者： Ungsoo Samuel Kim Hyoung-Seok Kim Young Ju lew Department of Ophthalmology Kim's Eye Hospital Konyang University College of Medicine

AIM: To report a case of branch retinal artery obstruction (BRAO) complicated after anterior ischemic optic neuropathy (AION). METHODS: A 42 year-old woman who complained of visual disturbance was performed ophthalmological examinations such as fundus photography, fluorescent angiography (FAG) and visual field test. RESULTS: At first visit, disc swelling was noted and arterial circulation was intact, however, 1 week after onset, the inferior branch retinal artery began to shrink and the flame hemorrhage intensified. Sixteen months later, the optic disc evidenced an atrophic change; additionally, a ghost vessel in the inferior branch retinal artery was found. CONCLUSION: We report a case of complications of BRAO arising after AION which caused the mechanical compression on the arterial circulation.

关键词： anterior ischemic optic neuropathy branch retinal artery obstruction complication fluorescent angiography

Clinicopathological Description of a Chronic Lymphocytic Leukemia in a Dog

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Open Journal of Veterinary Medicine 2024年第7期14卷 155-162页

作者： Maria Clara Boni Raffi Giovanna Valverde Magalhães Barbosa alana Carolina Capais Rodrigues Sheila Canevese Rahal John P. Kastelic Luíz Guilherme Dercore Benevenuto Iolanda Simões Braga Beatriz Poloni Batista Felipe César Da Silva Brasileiro Fernanda Barthelson Carvalho de Moura Priscylla Tatiana Chalfun Guimarães Okamoto Regina Kiomi Takahira Alessandra Melchert Noeme Sousa Rocha Department of Veterinary Clinics School of Veterinary Medicine and Animal Science So Paulo State UniversityUNESP Botucatu SP Brazil Independent Veterinary Practitioner Department of Veterinary Surgery and Animal Reproduction School of Veterinary Medicine and Animal Science So Paulo State UniversityUNESP Botucatu SP Brazil Faculty of Veterinary Medicine University of Calgary Calgary Canada

Hematopoietic tumors are associated with diagnostic and therapeutic challenges and a poor prognosis. Furthermore, their pathophysiology in dogs is not well understood. Chronic lymphocytic leukemia has been rarely reported in golden retrievers, perhaps due to difficulties in diagnosis and care. An 8-year-old spayed female golden retriever was referred to our hospital with a 2-month history of fatigue, weakness, and selective appetite. The dog was diagnosed with chronic lymphocytic leukemia based on blood smear evaluation. Despite treatment, the dog deteriorated and the owners opted for euthanasia. Histopathological examination revealed atypical lymphocytes in the spleen, extramedullary hematopoiesis in the spleen and liver, bone marrow depletion, moderate neutrophilic myocarditis, and acute renal tubular necrosis. In an immunohistochemical panel, cells in the spleen and bone marrow were positive for anti-CD20, anti-CD45, anti-CD3, anti-IBA-1, anti-Ki67, anti-MUM-1, and anti-PAX-5. In conclusion, the leukemia diagnosis was confirmed through reactive histiocytosis, marked extramedullary hematopoiesis, and other clinical and laboratory findings. Herein, we report a case of chronic lymphocytic leukemia in a female dog with clinical, laboratory, and necroscopy findings.

关键词： Canine Cancer Neoplasia Therapeutics