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Dihydroartemisinin increased the abundance of by YAP1 depression that sensitizes hepatocellular carcinomato anti-PD-1 immunotherapy

《医学前沿(英文)》 2023年 第17卷 第4期   页码 729-746 doi: 10.1007/s11684-022-0978-2

摘要: The effect of anti-programmed cell death 1 (anti-PD-1) immunotherapy is limited in patients with hepatocellular carcinoma (HCC). Yes-associated protein 1 (YAP1) expression increased in liver tumor cells in early HCC, and Akkermansia muciniphila abundance decreased in the colon. The response to anti-PD-1 treatment is associated with A. muciniphila abundance in many tumors. However, the interaction between A. muciniphila abundance and YAP1 expression remains unclear in HCC. Here, anti-PD-1 treatment decreased A. muciniphila abundance in the colon, but increased YAP1 expression in the tumor cells by mice with liver tumors in situ. Mechanistically, hepatocyte-specific Yap1 knockout (Yap1LKO) maintained bile acid homeostasis in the liver, resulting in an increased abundance of A. muciniphila in the colon. Yap1 knockout enhanced anti-PD-1 efficacy. Therefore, YAP1 inhibition is a potential target for increasing A. muciniphila abundance to promote anti-PD-1 efficacy in liver tumors. Dihydroartemisinin (DHA), acting as YAP1 inhibitor, increased A. muciniphila abundance to sensitize anti-PD-1 therapy. A. muciniphila by gavage increased the number and activation of CD8+ T cells in liver tumor niches during DHA treatment or combination with anti-PD-1. Our findings suggested that the combination anti-PD-1 with DHA is an effective strategy for liver tumor treatment.

关键词: hepatocellular carcinoma     YAP1     Akkermansia muciniphila     anti-PD-1     dihydroartemisinin     bile acid    

EEG controlled neuromuscular electrical stimulation of the upper limb for stroke patients

Hock Guan TAN, Cheng Yap SHEE, Keng He KONG, Cuntai GUAN, Wei Tech ANG

《机械工程前沿(英文)》 2011年 第6卷 第1期   页码 71-81 doi: 10.1007/s11465-011-0207-1

摘要:

This paper describes the Brain Computer Interface (BCI) system and the experiments to allow post-acute (<3 months) stroke patients to use electroencephalogram (EEG) to trigger neuromuscular electrical stimulation (NMES)-assisted extension of the wrist/fingers, which are essential pre-requisites for useful hand function. EEG was recorded while subjects performed motor imagery of their paretic limb, and then analyzed to determine the optimal frequency range within the -rhythm, with the greatest attenuation. Aided by visual feedback, subjects then trained to regulate their -rhythm EEG to operate the BCI to trigger NMES of the wrist/finger. 6 post-acute stroke patients successfully completed the training, with 4 able to learn to control and use the BCI to initiate NMES. This result is consistent with the reported BCI literacy rate of healthy subjects. Thereafter, without the loss of generality, the controller of the NMES is developed and is based on a model of the upper limb muscle (biceps/triceps) groups to determine the intensity of NMES required to flex or extend the forearm by a specific angle. The muscle model is based on a phenomenological approach, with parameters that are easily measured and conveniently implemented.

关键词: brain computer interface     neuromuscular electrical stimulation     stroke     musculoskeletal modeling    

Sonication and grinding pre-treatments on

Kit Wayne Chew, Pau Loke Show, Yee Jiun Yap, Joon Ching Juan, Siew Moi Phang, Tau Chuan Ling, Jo-Shu

《环境科学与工程前沿(英文)》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1040-0

摘要:

Effects of sonication and grinding pretreatment on agarose quality were observed.

Successful agarose extraction with direct PEG method without the need to dry agar.

FTIR spectra and the characteristics peaks in agarose are explained.

Improvements in gel strength and sulfate content properties in agarose samples.

关键词: Agarose     Gelidium     Pretreatment     Seaweed     Sonication    

数据驱动的信息物理生产系统——迈向安全、高效、分布式智能制造 Perspective

Manu Suvarna, Ken Shaun Yap, 杨文韬, 李君, Yen Ting Ng, 王笑楠

《工程(英文)》 2021年 第7卷 第9期   页码 1212-1223 doi: 10.1016/j.eng.2021.04.021

摘要:

随着工业4.0 和智能制造等概念和系统的普及,传统制造业将见证向新模式的转型,以更好地响应用户的需求并实现安全、高效、智能化的操作。在此背景下,本文聚焦于信息物理生产系统(CPPS)的概念,从整体上阐述了CPPS在这一产业转型中的三个关键驱动作用,即数据驱动的生产系统、分布式的智能制造和保证数据安全的集成区块链技术。通过这三个方面的具体技术和系统实现,基于数据驱动的建模和优化,智能信息物理系统将助力流程工业和制造业转型。同时,分布式的智能制造可以更高效地实现产业升级和低碳化发展。区块链技术可以进一步确保数据共享的可靠性和安全性,实现跨子系统的整合。本文详细分析了最近发表的文献研究和行业相关案例支持,并对现有挑战和发展方向进行了总结展望。

关键词: 智能制造     信息物理生产系统     工业物联网     数据分析     分布式系统     区块链    

A systematic approach to ON-OFF event detection and clustering analysis of non-intrusive appliance load monitoring

Chuan Choong YANG,Chit Siang SOH,Vooi Voon YAP

《能源前沿(英文)》 2015年 第9卷 第2期   页码 231-237 doi: 10.1007/s11708-015-0358-6

摘要: The aim of non-intrusive appliance load monitoring (NIALM) is to disaggregate the energy consumption of individual electrical appliances from total power consumption utilizing non-intrusive methods. In this paper, a systematic approach to ON-OFF event detection and clustering analysis for NIALM were presented. From the aggregate power consumption data set, the data are passed through median filtering to reduce noise and prepared for the event detection algorithm. The event detection algorithm is to determine the switching of ON and OFF status of electrical appliances. The goodness-of-fit (GOF) methodology is the event detection algorithm implemented. After event detection, the events detected were paired into ON-OFF pairing appliances. The results from the ON-OFF pairing algorithm were further clustered in groups utilizing the -means clustering analysis. The -means clustering were implemented as an unsupervised learning methodology for the clustering analysis. The novelty of this paper is the determination of the time duration an electrical appliance is turned ON through combination of event detection, ON-OFF pairing and -means clustering. The results of the algorithm implementation were discussed and ideas on future work were also proposed.

关键词: non-intrusive appliance load monitoring     event detection     goodness-of-fit (GOF)     K-means clustering     ON-OFF pairing    

灰色预测模型GM()的适用性分析及在火灾风险预测中的应用

陈子锦,王福亮,陆守香

《中国工程科学》 2007年 第9卷 第5期   页码 91-94

摘要:

通过对灰色预测模型———GM()的理论分析,证明了该模型的预测值及其变化趋势均具有单调 性,进而提出了GM()模型的适用性判据,并给出了该判据在火灾风险灰色预测中的应用实例。

关键词: 火灾预测     GM(1     1)模型     火灾伤人率    

Metabolic interventions combined with CTLA-4 and PD-1/PD-L1 blockade for the treatment of tumors: mechanisms

《医学前沿(英文)》   页码 805-822 doi: 10.1007/s11684-023-1025-7

摘要: Immunotherapies based on immune checkpoint blockade (ICB) have significantly improved patient outcomes and offered new approaches to cancer therapy over the past decade. To date, immune checkpoint inhibitors (ICIs) of CTLA-4 and PD-1/PD-L1 represent the main class of immunotherapy. Blockade of CTLA-4 and PD-1/PD-L1 has shown remarkable efficacy in several specific types of cancers, however, a large subset of refractory patients presents poor responsiveness to ICB therapy; and the underlying mechanism remains elusive. Recently, numerous studies have revealed that metabolic reprogramming of tumor cells restrains immune responses by remodeling the tumor microenvironment (TME) with various products of metabolism, and combination therapies involving metabolic inhibitors and ICIs provide new approaches to cancer therapy. Nevertheless, a systematic summary is lacking regarding the manner by which different targetable metabolic pathways regulate immune checkpoints to overcome ICI resistance. Here, we demonstrate the generalized mechanism of targeting cancer metabolism at three crucial immune checkpoints (CTLA-4, PD-1, and PD-L1) to influence ICB therapy and propose potential combined immunotherapeutic strategies co-targeting tumor metabolic pathways and immune checkpoints.

关键词: CTLA-4     PD-1     PD-L1     immune checkpoint blockade (ICB)     metabolic reprogramming     combined tumor therapeutic strategies    

渤海辽东带地质认识的突破与金县1-1大油田的发现

邓运华

《中国工程科学》 2011年 第13卷 第10期   页码 13-18

摘要: 在此认识指导下选择研究方向,评价有利目标,经钻探发现了金县1-1大油田,储量达1.5×108 m3,充分显示了科研在油气勘探中的作用。

关键词: 渤海辽东带     金县1-1     地质认识     大油田    

联邦无监督表示学习 Research Article

张凤达1,况琨1,陈隆1,游兆阳1,沈弢1,肖俊1,张寅1,吴超2,吴飞1,庄越挺1,李晓林3,4,5

《信息与电子工程前沿(英文)》 2023年 第24卷 第8期   页码 1181-1193 doi: 10.1631/FITEE.2200268

摘要: FURL提出了两个新挑战:(1)客户端之间的数据分布转移(非独立同分布)会使本地模型专注于不同的类别,从而导致表示空间的不一致;(2)如果FURL中客户端之间没有统一的信息,客户端之间的表示就会错位。

关键词: 联邦学习;无监督学习;表示学习;对比学习    

非等间距GM(1,1)幂模型及其工程应用

王正新,党耀国,刘思峰

《中国工程科学》 2012年 第14卷 第7期   页码 98-102

摘要:

针对工程中大量存在的非等间距序列的建模问题,提出了非等间距GM(1, 1)幂模型。以平均相对误差绝对值最小化为目标,以模型参数之间的关系为约束,构建了一个非线性优化模型实现非等间距GM(1, 1)幂模型的参数估计。结果表明,非等间距GM(1, 1)幂模型的形式较为灵活,非等间距GM(1, 1)模型和灰色Verhulst模型均是非等间距GM(1, 1)幂模型的特殊情形,幂指数的优化有利于提高建模精度。最后通过一个工程实例验证了非等间距GM(1, 1)幂模型的有效性与实用性。

关键词: 灰色系统     非等间距序列     GM(1     1)幂模型     参数优化    

A systematic approach in load disaggregation utilizing a multi-stage classification algorithm for consumer electrical appliances classification

Chuan Choong YANG, Chit Siang SOH, Vooi Voon YAP

《能源前沿(英文)》 2019年 第13卷 第2期   页码 386-398 doi: 10.1007/s11708-017-0497-z

摘要: The potential to save energy in existing consumer electrical appliances is very high. One of the ways to achieve energy saving and improve energy use awareness is to recognize the energy consumption of individual electrical appliances. To recognize the energy consumption of consumer electrical appliances, the load disaggregation methodology is utilized. Non-intrusive appliance load monitoring (NIALM) is a load disaggregation methodology that disaggregates the sum of power consumption in a single point into the power consumption of individual electrical appliances. In this study, load disaggregation is performed through voltage and current waveform, known as the - trajectory. The classification algorithm performs cropping and image pyramid reduction of the - trajectory plot template images before utilizing the principal component analysis (PCA) and the -nearest neighbor ( -NN) algorithm. The novelty of this paper is to establish a systematic approach of load disaggregation through - trajectory-based load signature images by utilizing a multi-stage classification algorithm methodology. The contribution of this paper is in utilizing the “ -value,” the number of closest data points to the nearest neighbor, in the -NN algorithm to be effective in classification of electrical appliances. The results of the multi-stage classification algorithm implementation have been discussed and the idea on future work has also been proposed.

关键词: load disaggregation     voltage-current (V-I) trajectory     multi-stage classification algorithm     principal component analysis (PCA)     k-nearest neighbor (k-NN)    

磁控溅射法生长的带隙可调谐(GaxIn1−x)2O3 Research Articles

张法碧1,孙巾寓1,李海鸥1,周娟1,王荣1,孙堂友1,傅涛1,肖功利1,李琦1,刘兴鹏1,张秀云1,郭道友2,王相虎3,秦祖军1

《信息与电子工程前沿(英文)》 2021年 第22卷 第10期   页码 1370-1378 doi: 10.1631/FITEE.2000330

摘要: 采用磁控溅射技术和热退火技术在(0001)蓝宝石衬底上制备了多组分氧化物(GaxIn1−x)2O3薄膜,实现可调带隙。详细研究了三元化合物(GaxIn1−x)2O3在整个组成范围内的光学性质和能带结构演化。X射线衍射谱表明,Ga含量在0.11至0.55之间的(GaxIn1−x)2O3薄膜既有立方结构,也有单斜结构,而Ga含量高于0.74的(GaxIn1−x)2O3薄膜只有单斜结构。实验结果为透明导电化合物半导体(GaxIn1−x)2O3薄膜在光电和光伏行业的应用,特别是在显示器、发光二极管和太阳能电池的应用奠定了基础。

关键词: (GaxIn1−x)2O3薄膜;带隙可调谐;磁控溅射    

Soluble triggering receptor expressed on myeloid cell-1 (sTREM-1): a potential biomarker for the diagnosis

Changlin Cao, Jingxian Gu, Jingyao Zhang

《医学前沿(英文)》 2017年 第11卷 第2期   页码 169-177 doi: 10.1007/s11684-017-0505-z

摘要: Sensitive and useful biomarkers for the diagnosis and prognosis of infectious diseases have been widely developed. An example of these biomarkers is triggering receptor expressed on myeloid cell-1 (TREM-1), which is a cell surface receptor expressed on monocytes/macrophages and neutrophils. TREM-1 amplifies inflammation by activating the TREM-1/DAP12 pathway. This pathway is triggered by the interaction of TREM-1 with ligands or stimulation by bacterial lipopolysaccharide. Consequently, pro-inflammatory cytokines and chemokines are secreted. Soluble TREM-1 (sTREM-1) is a special form of TREM-1 that can be directly tested in human body fluids and well-known biomarker for infectious diseases. sTREM-1 level can be potentially used for the early diagnosis and prognosis prediction of some infectious diseases, including infectious pleural effusion, lung infections, sepsis, bacterial meningitis, viral infections (e.g., Crimean Congo hemorrhagic fever and dengue fever), fungal infections (e.g., infection), and burn-related infections. sTREM-1 is a more sensitive and specific biomarker than traditional indices, such as C-reactive protein and procalcitonin levels, for these infectious diseases. Therefore, sTREM-1 is a feasible biomarker for the targeted therapy and rapid and early diagnosis of infectious diseases.

关键词: soluble triggering receptor expressed on myeloid cells-1     infectious diseases     diagnosis and prognosis     biomarker    

Molecular characterization of two suppressor of cytokine signaling 1 genes (

Xue XU,Jiannan ZHANG,Juan LI,Yajun WANG

《农业科学与工程前沿(英文)》 2015年 第2卷 第1期   页码 73-83 doi: 10.15302/J-FASE-2015044

摘要: Suppressor of cytokine signaling 1 (SOCS1) protein can inhibit the signal transduction triggered by some cytokines or hormones and thus are important in many physiological/pathological processes, including innate and adaptive immunity, inflammation, and development in mammals. However, there is sparse information about their structure, tissue expression, in birds, where their biological functions remain unknown. In this study, we cloned and characterized two genes (named and ) from chickens. is predicted to encode a 207-amino acid protein, which shares high amino acid sequence identity (64%–67%) with human and mouse SOCS1. Besides , a novel gene was also identified in chickens and other non-mammalian vertebrates including . Chicken is predicted to encode a 212-amino acid protein, which shares only 30%–32% amino acid sequence identity with human SOCS1 and cSOCS1a. RT-PCR assay revealed that both and are widely expressed in all chicken tissues. Using a luciferase reporter assay system, we further demonstrated that transient expression of and can significantly inhibit chicken growth hormone (GH)- or prolactin (PRL)-induced luciferase activities of Hep G2 cells expressing cGH receptor (or cPRL receptor), indicating that SOCS1a and SOCS1b proteins can negatively regulate GH/PRL signaling. Taken together, these data suggest that both cSOCS1a and cSOCS1b may function as negative regulators of cytokine/hormone actions, such as modulation of GH/PRL actions in chickens.

关键词: chicken     SOCS1a     SOCS1b     growth hormone     prolactin    

视觉知识引导的中国篆刻智能化生成 Research Article

张克俊1,2,张瑞1,殷叶航1,李一非3,伍文棋1,孙凌云1,2,吴飞1,邓晃煌1,潘云鹤1

《信息与电子工程前沿(英文)》 2022年 第23卷 第10期   页码 1479-1493 doi: 10.1631/FITEE.2100094

摘要:

本文将传统篆刻艺术中的资源协同、设计创作、视觉呈现等过程以数字化方式再现,研制了篆刻艺术智能化创作的系统和平台(浙江大学智能篆刻系统:http://www. next.zju.edu.cn/seal/;篆刻搜索排版系统:http://www.next.zju.edu.cn/seal/search_app/),以视觉知识为引导突破计算机艺术学面临的难点问题。本文构建了包含字和印的求是篆刻数据库,并以此为视觉知识库,构建了篆字智能生成算法。此外,为创建印章布局,提出一种篆字变形算法调整印章字符,并结合视觉知识实现智能篆字布局,以实现智能结构。实验结果表明本文所提方法和系统可有效解决篆刻艺术生成中的难点问题,为篆刻艺术的守正与创新提供理论与应用借鉴。

关键词: 篆刻;智能生成;深度学习;参数化模型;计算机艺术    

标题 作者 时间 类型 操作

Dihydroartemisinin increased the abundance of by YAP1 depression that sensitizes hepatocellular carcinomato anti-PD-1 immunotherapy

期刊论文

EEG controlled neuromuscular electrical stimulation of the upper limb for stroke patients

Hock Guan TAN, Cheng Yap SHEE, Keng He KONG, Cuntai GUAN, Wei Tech ANG

期刊论文

Sonication and grinding pre-treatments on

Kit Wayne Chew, Pau Loke Show, Yee Jiun Yap, Joon Ching Juan, Siew Moi Phang, Tau Chuan Ling, Jo-Shu

期刊论文

数据驱动的信息物理生产系统——迈向安全、高效、分布式智能制造

Manu Suvarna, Ken Shaun Yap, 杨文韬, 李君, Yen Ting Ng, 王笑楠

期刊论文

A systematic approach to ON-OFF event detection and clustering analysis of non-intrusive appliance load monitoring

Chuan Choong YANG,Chit Siang SOH,Vooi Voon YAP

期刊论文

灰色预测模型GM()的适用性分析及在火灾风险预测中的应用

陈子锦,王福亮,陆守香

期刊论文

Metabolic interventions combined with CTLA-4 and PD-1/PD-L1 blockade for the treatment of tumors: mechanisms

期刊论文

渤海辽东带地质认识的突破与金县1-1大油田的发现

邓运华

期刊论文

联邦无监督表示学习

张凤达1,况琨1,陈隆1,游兆阳1,沈弢1,肖俊1,张寅1,吴超2,吴飞1,庄越挺1,李晓林3,4,5

期刊论文

非等间距GM(1,1)幂模型及其工程应用

王正新,党耀国,刘思峰

期刊论文

A systematic approach in load disaggregation utilizing a multi-stage classification algorithm for consumer electrical appliances classification

Chuan Choong YANG, Chit Siang SOH, Vooi Voon YAP

期刊论文

磁控溅射法生长的带隙可调谐(GaxIn1−x)2O3

张法碧1,孙巾寓1,李海鸥1,周娟1,王荣1,孙堂友1,傅涛1,肖功利1,李琦1,刘兴鹏1,张秀云1,郭道友2,王相虎3,秦祖军1

期刊论文

Soluble triggering receptor expressed on myeloid cell-1 (sTREM-1): a potential biomarker for the diagnosis

Changlin Cao, Jingxian Gu, Jingyao Zhang

期刊论文

Molecular characterization of two suppressor of cytokine signaling 1 genes (

Xue XU,Jiannan ZHANG,Juan LI,Yajun WANG

期刊论文

视觉知识引导的中国篆刻智能化生成

张克俊1,2,张瑞1,殷叶航1,李一非3,伍文棋1,孙凌云1,2,吴飞1,邓晃煌1,潘云鹤1

期刊论文