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Direct 4D printing of functionally graded hydrogel networks for biodegradable,untethered,and multimorphic soft robots

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International Journal of Extreme Manufacturing 2024年第2期6卷 407-416页

作者： soo young cho Dong Hae Ho Sae Byeok Jo Jeong Ho cho Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Mechanical Engineering Virginia TechBlacksburgVA 24061United States of America School of Chemical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Recent advances in functionally graded additive manufacturing(FGAM)technology have enabled the seamless hybridization of multiple functionalities in a single *** robotics can become one of the largest beneficiaries of these advances,through the design of a facile four-dimensional(4D)FGAM process that can grant an intelligent stimuli-responsive mechanical functionality to the printed ***,we present a simple binder jetting approach for the 4D printing of functionally graded porous multi-materials(FGMM)by introducing rationally designed graded multiphase feeder *** graded cross-linking agents gradually form stable porous network structures within aqueous polymer particles,enabling programmable hygroscopic deformation without complex mechanical ***,a systematic bed design incorporating additional functional agents enables a multi-stimuli-responsive and untethered soft robot with stark stimulus *** biodegradability of the proposed 4D-printed soft robot further ensures the sustainability of our approach,with immediate degradation rates of 96.6%within 72 *** proposed 4D printing concept for FGMMs can create new opportunities for intelligent and sustainable additive manufacturing in soft robotics.

关键词： intelligent and sustainable additive manufacturing multi-material four-dimensional printing untethered soft robot multi-stimuli-responsive soft robot biodegradable soft robotics

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ASpediaFI:Functional Interaction Analysis of Alternative Splicing Events

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Genomics, Proteomics & Bioinformatics 2022年第3期20卷 466-482页

作者： Kyubin Lee Doyeong Yu Daejin Hyung soo young cho Charny Park Bioinformatics Branch Research InstituteNational Cancer CenterGoyang 10408Republic of Korea

Alternative splicing(AS)regulates biological processes governing phenotypes and *** AS(DAS)gene test methods have been developed to investigate important exonic expression from high-throughput ***,the DAS events extracted using statistical tests are insufficient to delineate relevant biological *** this study,we developed a novel application,Alternative Splicing Encyclopedia:Functional Interaction(ASpediaFI),to systemically identify DAS events and co-regulated genes and *** establishes a heterogeneous interaction network of genes and their feature nodes(i.e.,AS events and pathways)connected by coexpression or pathway gene set ***,ASpediaFI explores the interaction network using the random walk with restart algorithm and interrogates the proximity from a query gene ***,ASpediaFI extracts significant AS events,genes,and *** evaluate the performance of our method,we simulated RNA sequencing(RNA-seq)datasets to consider various conditions of sequencing depth and sample *** performance was compared with that of other ***,we analyzed three public datasets of cancer patients or cell lines to evaluate how well ASpediaFI detects biologically relevant *** exhibits strong performance in both simulated and public *** integrative approach reveals that DAS events that recognize a global co-expression network and relevant pathways determine the functional importance of spliced genes in the *** is publicly available at https://***/packages/ASpediaFI.

关键词： Alternative splicing RNA-seq Heterogeneous interaction network Random walk with restart Gene set enrichment analysis

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Transverse myelitis after infection with varicella zoster virus in patient with normal immunity: A case report

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World Journal of Clinical Cases 2021年第33期9卷 10308-10314页

作者： Daehun Yun soo young cho Wan Ju Eun Hyoung Seo Department of Anesthesiology and Pain Medicine Kwangju Christian HospitalGwangju 61661South Korea

BACKGROUND Varicella zoster virus(VZV)is a human neurotropic and double-stranded DNA alpha-herpes *** infection with VZV usually occurs during childhood,manifesting as *** of latent VZV can lead to various neurological complications,including transverse myelitis(TM);although cases of the latter are very rare,particularly in newly active VZV *** SUMMARY We report here an unusual case of TM in a middle-aged adult immunocompetent patient that developed concomitant to an active VZV *** 46-year-old male presented with painful vesicular eruption on his left chest that had steadily progressed to involvement of his back over a 3-d *** fluid testing was denied,but findings from magnetic resonance imaging and collective symptomology indicated *** was administered antiviral drugs and corticosteroids immediately but his symptom improvement waxed and waned,necessitating multiple hospital *** about a month of repeated treatments,he was deemed sufficiently improved for hospital discharge to *** VZV myelitis should be suspected when a patient visits the outpatient pain clinic with herpes zoster showing neurological symptoms.

关键词： Herpes zoster Postherpetic neuralgia Transverse myelitis Varicella zoster virus Motor weakness Vesicular Pain Case report

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Massive hemothorax following internal jugular vein catheterization under ultrasound guidance:A case report

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World Journal of Clinical Cases 2022年第17期10卷 5776-5782页

作者： Hyun Kang soo young cho Eun Ha Suk Wan Ju Joon Yong choi Department of Anesthesiology and Pain Medicine Kwangju Christian HospitalGwangju 61661South Korea

BACKGROUND Hemothorax is a rare but life-threatening complication of central venous *** reports suggest that ultrasound guidance may reduce complications however,it does not guarantee safety CASE SUMMARY A 75-year-old male patient was admitted for laparoscopic radical *** ultrasound guidance,right internal jugular vein catheterization was successfully achieved after failure to aspirate blood from the catheter in the first *** hypotension developed after surgical positioning and persisted until the end of the operation,lasting for about 4 *** the recovery room,a massive hemothorax was identified on chest radiography and computed *** patient recovered following chest tube drainage of 1.6 L *** Hemothorax must be suspected when unexplained hemodynamic instability develops after central venous catheterization despite ultrasound *** the proper use of ultrasound is important.

关键词： Central venous catheterization Hemothorax Ultrasound guidance Internal jugular vein Case report

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A New Encryption Mechanism Supporting the Update of Encrypted Data for Secure and Efficient Collaboration in the Cloud Environment

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 813-834页

作者： Chanhyeong cho Byeori Kim Haehyun cho Taek-young Youn Department of Cyber Security Dankook UniversityYongin16890Republic of Korea Department of Software Soongsil UniversitySeoul07027Republic of Korea

With the rise of remote collaboration,the demand for advanced storage and collaboration tools has rapidly ***,traditional collaboration tools primarily rely on access control,leaving data stored on cloud servers vulnerable due to insufficient *** paper introduces a novel mechanism that encrypts data in‘bundle’units,designed to meet the dual requirements of efficiency and security for frequently updated collaborative *** bundle includes updated information,allowing only the updated portions to be reencrypted when changes *** encryption method proposed in this paper addresses the inefficiencies of traditional encryption modes,such as Cipher Block Chaining(CBC)and Counter(CTR),which require decrypting and re-encrypting the entire dataset whenever updates *** proposed method leverages update-specific information embedded within data bundles and metadata that maps the relationship between these bundles and the plaintext *** utilizing this information,the method accurately identifies the modified portions and applies algorithms to selectively re-encrypt only those *** approach significantly enhances the efficiency of data updates while maintaining high performance,particularly in large-scale data *** validate this approach,we conducted experiments measuring execution time as both the size of the modified data and the total dataset size *** show that the proposed method significantly outperforms CBC and CTR modes in execution speed,with greater performance gains as data size ***,our security evaluation confirms that this method provides robust protection against both passive and active attacks.

关键词： Cloud collaboration mode of operation data update efficiency

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Apolipoprotein A-I binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang Seunghwan choi soo-Ho choi Keun-young Kim Yury I.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye Institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and Imaging Research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

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High mobility group box 1 in the central nervous system:regeneration hidden beneath inflammation

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Neural Regeneration Research 2025年第1期20卷 107-115页

作者： Hanki Kim Bum Jun Kim Seungyon Koh Hyo Jin cho Xuelian Jin Byung Gon Kim Jun young choi Department of Brain Science Ajou University School of MedicineSuwonSouth Korea Department of Biomedical Sciences Ajou University Graduate School of MedicineSuwonSouth Korea Department of Neurology Ajou University School of MedicineSuwonSouth Korea Department of Geriatrics The Affiliated Suqian First People’s Hospital of Nanjing Medical UniversitySuqianJiangsu ProvinceChina

High-mobility group box 1 was first discovered in the calf thymus as a DNA-binding nuclear protein and has been widely studied in diverse fields,including neurology and ***-mobility group box 1 in the extracellular space functions as a pro-inflammatory damage-associated molecular pattern,which has been proven to play an important role in a wide variety of central nervous system disorders such as ischemic stroke,Alzheimer’s disease,frontotemporal dementia,Parkinson’s disease,multiple sclerosis,epilepsy,and traumatic brain *** drugs that inhibit high-mobility group box 1 as a damage-associated molecular pattern,such as glycyrrhizin,ethyl pyruvate,and neutralizing anti-high-mobility group box 1 antibodies,are commonly used to target high-mobility group box 1 activity in central nervous system *** it is commonly known for its detrimental inflammatory effect,high-mobility group box 1 has also been shown to have beneficial pro-regenerative roles in central nervous system *** this narrative review,we provide a brief summary of the history of high-mobility group box 1 research and its characterization as a damage-associated molecular pattern,its downstream receptors,and intracellular signaling pathways,how high-mobility group box 1 exerts the repair-favoring roles in general and in the central nervous system,and clues on how to differentiate the pro-regenerative from the pro-inflammatory *** targeting high-mobility group box 1 in the central nervous system may benefit from differentiating between the two functions rather than overall suppression of high-mobility group box 1.

关键词： central nervous system damage-associated molecular pattern ethyl pyruvate glycyrhizzin high mobility group box 1 inflammation neural stem cells neurodevelopment oligodendrocyte progenitor cells redox status regeneration

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Chemical composition and antioxidant capacity of the aqueous extract of Phellodendron amurense

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Journal of Forestry Research 2018年第4期29卷 1033-1040页

作者： Natarajan Velmurugan Duraisamy Kalpana Jae young cho Yang soo Lee Department of Forestry College of Agriculture and Life Sciences Chonbuk National University Jeonju 54896 Republic of Korea Branch Laboratory-Itanagar CSIR-North East Institute of Science and Technology Naharlagun Arunachal Pradesh 791 110 India Department of Agricultural Chemistry Chonbuk National University Jeonju 54896 Republic of Korea

The aqueous extract of Phellodendron amurense Rupr. （Amur Cork Tree） provides a rich source of antioxidants and chemical compounds, and can be used for food and wood preservative materials. In this study, we characterized the chemical composition of this extract by GC and GC/MS. The antioxidant capacity was evaluated using a variety of antioxidant assays （superoxide radical, hydroxyl radical, nitric oxide radical, and DPPH radical scavenging activity）. Additionally, total polyphenolic content was determined. Phenolic acids and acetone derivatives were major compounds of the extract capable of scavenging the DPPH free radical and reducing ferric ions. DPPH and ferric ion reduction results were strongly correlated with total phenolic content of the extract which also exhibited strong nitric oxide, hydroxyl radical scavenging and superoxide anion radical scavenging activities.

关键词： Phellodendron amurense Aqueous extract Chemical characterization Antioxidant activity

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Effect of robot-assisted gait training on the biomechanical properties of burn scars:a single-blind,randomized controlled trial

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Burns & Trauma 2022年第1期10卷 191-199页

作者： Yoon soo cho So young Joo Cheong Hoon Seo Department of Rehabilitation Medicine Hangang Sacred Heart HospitalCollege of MedicineHallym UniversitySeoul 07247Republic of Korea

Background:Robot-assisted gait training(RAGT)is more effective in the range of motion(ROM)and isometric strength in patients with burns than conventional ***,concerns have been raised about whether RAGT might negatively affect the scars of patients with ***,we investigated the effects of RAGT-induced mechanical load on the biomechanical properties of burn ***:This was a single-blind,randomized clinical trial conducted on inpatients admitted to the Department of Rehabilitation Medicine between September 2020 and August *** was conducted for 30 min per day,five days a week for 12 weeks and the control group received conventional gait training for 12 *** pre-training ROM of lower extremity joints was evaluated and the levels of melanin,erythema,trans-epidermal water loss,scar distensibility and elasticity were assessed before training and at 4 and 12 weeks after ***,19 patients in the gait assistance robot(GAR)group and 20 patients in the control group completed the 12-week trial and all ***:There were no significant differences in the epidemiologic characteristics,pre-training ROM of joints and pre-training biomechanical properties of the burn scar between the groups(p>0.05 for all).None of the patients experienced skin abrasion around the burn scar where the fastening belts were applied or musculoskeletal or cardiovascular adverse events during the *** thickness significantly increased in both groups(p=0.037 and p=0.019)and scar distensibility significantly decreased in the control group(p=0.011)during the *** was significantly decreased in the GAR group during the training(p=0.038).The GAR and control groups showed significant difference in the change in the values of hysteresis between pre-training and 12 weeks after training(p=0.441 and p=0.049).Conclusions:RAGT significantly decreased hysteresis in hypertrophic burn scars and did not cause a significant decrease

关键词： Robot-assisted gait training Burn Scar biomechanical properties Hysteresis Burn rehabilitation

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Distinctive clinical features of spontaneous pneumoperitoneum in neonates: A retrospective analysis

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World Journal of Clinical Cases 2022年第23期10卷 8124-8132页

作者： soo-Hong Kim Yong-Hoon cho Hae-young Kim Department of Surgery Pusan National University Yangsan HospitalPusan National University School of MedicineYangsan 50612South Korea Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan HospitalYangsan 50612South Korea

BACKGROUND Spontaneous pneumoperitoneum(SP) without gastrointestinal perforation rarely occurs in neonates, with most SP cases being idiopathic. Although SP usually follows a benign clinical course with favorable prognosis, it can become lifethreatening in certain situations. In these cases, urgent surgical intervention may be required. Therefore, it may be difficult to decide when or how to perform prompt *** To demonstrate the distinct clinical features of SP to guide appropriate management by comparing characteristics between SP and typical pneumoperitoneum secondary to gastrointestinal *** We retrospectively reviewed electronic medical records and identified 37 neonates with radiological evidence of pneumoperitoneum who were treated at our institution. Clinical variables were compared between neonates with SP without gastrointestinal perforation(Group A) and those with pneumoperitoneum secondary to gastrointestinal perforation(Group B). Clinical variables between groups were compared using Student’s t-test and the chi-square test. The risk factors related to mortality were examined using multi-logistic regression *** Group A comprised 35.1%(13/37) of the patients. The frequency of persistent pulmonary hypertension(53.8%) and pneumothorax(46.2%) before the development of pneumoperitoneum was significantly higher in group A than in group B(P =0.004). Platelet count and partial pressure of arterial oxygen(PaO) were significantly lower in group A(P = 0.015 and 0.025, respectively). Overall mortality was significantly higher in group A than in group B(76.9% vs 16.7%, P = 0.001). Only preterm infants were significantly associated with high mortality(P = 0.041;odds ratio = 18.0). Accompaniment with persistent pulmonary hypertension and pneumothorax were also significantly high(P = 0.004) in group A, but these were not strongly associated with high *** This study identified a higher mortality rate in patients w

关键词： Spontaneous pneumoperitoneum Thrombocytopenia Persistent pulmonary hypertension Pneumothorax Preterm

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