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Endoscopic Bariatric and Metabolic Therapies for Liver Disease:Mechanisms,Benefits,and Associated Risks

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Journal of Clinical and Translational Hepatology 2022年第5期10卷 986-994页

作者： Mengting Ren xinxin zhou Lu Lv Feng Ji Department of Gastroenterology The First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiangChina

Nonalcoholic fatty liver disease(NAFLD),including advancedstage nonalcoholic steatohepatitis(NASH),is currently the most common chronic liver disease worldwide and is projected to become the leading indication for liver transplantation(LT).However,there are no effective pharmacological therapies for *** bariatric and metabolic therapies(EBMTs)are less invasive procedures for the treatment of obesity and its metabolic *** recent studies have demonstrated the beneficial effects of EBMTs on NAFLD/*** this review,we summarize the major EBMTs and their mechanisms of *** further discuss the current evidence on the efficacy and safety of EBMTs in people with NAFLD/NASH and obese cirrhotic LT *** potential utility of EBMTs in reducing liver volume and perioperative complications in bariatric surgery candidates is also ***,we review the development of liver abscesses as a common serious adverse event in duodenaljejunal bypass liner implantation.

关键词： Weight loss Endoscopy Obesity Nonalcoholic fatty liver disease Liver transplantation Liver abscess

Classification for Glass Bottles Based on Improved Selective Search Algorithm

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Computers, Materials & Continua 2020年第7期64卷 233-251页

作者： Shuqiang Guo Baohai Yue Manyang Gao xinxin zhou Bo Wang School of Computer Science Northeast Electric Power UniversityJilin132000China Information and Communication Company State Grid Tianjin Electric Power CompanyTianjin300000China Graduate School of Science and Engineering Iwate UniversityMorioka020-8550Japan

The recycling of glass bottles can reduce the consumption of resources and contribute to environmental *** present,the classification of recycled glass bottles is difficult due to the many differences in specifications and *** paper proposes a classification algorithm for glass bottles that is divided into two stages,namely the extraction of candidate regions and the classification of *** the candidate region extraction stage,aiming at the problem of the large time overhead caused by the use of the SIFT(scale-invariant feature transform)descriptor in SS(selective search),an improved feature of HLSN(Haar-like based on SPP-Net)is *** integral graph is introduced to accelerate the process of forming an HBSN vector,which overcomes the problem of repeated texture feature calculation in overlapping regions by *** the classification stage,the improved SS algorithm is used to extract target *** target regions are merged using a non-maximum suppression algorithm according to the classification scores of the respective regions,and the merged regions are classified using the trained *** demonstrate that,compared with the original SS,the improved SS algorithm increases the calculation speed by 13.8%,and its classification accuracy is 89.4%.Additionally,the classification algorithm for glass bottles has a certain resistance to noise.

关键词： Classification of glass bottle HBSN feature improved selective search algorithm LightGBM

Chaos Raman distributed optical fiber sensing

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Light(Science & Applications) 2023年第10期12卷 2105-2121页

作者： Chenyi Wang Jian Li xinxin zhou Zijia Cheng Lijun Qiao Xiaohui Xue Mingjiang Zhang College of Physics Taiyuan University of TechnologyTaiyuan 030024 ShanxiChina Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education Taiyuan University of TechnologyTaiyuan 030024 ShanxiChina College of Electrical Information and Optical Engineering Taiyuan University of TechnologyTaiyuan030024ShanxiChina Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032 ShanxiChina

The physics principle of pulse flight positioning is the main theoretical bottleneck that restricts the spatial resolution of the existing Raman distributed optical fiber sensing *** to the pulse width of tens of nanoseconds,the spatial resolution of the existing Raman distributed optical fiber sensing scheme with kilometer-level sensing distance is limited to the meter level,which seriously restricts the development of the optical time-domain reflection *** this paper,a chaos laser is proposed in the context of the physical principle of the Raman scattering effect,and a novel theory of chaos Raman distributed optical fiber sensing scheme is *** scheme reveals the characteristics of chaos Raman scattering light excited by a chaotic signal on the sensing ***,the chaos time-domain compression demodulation mechanism between the temperature variation information and chaos correlation peak is ***,the position of the temperature variation signal is precisely located using the delay time of the chaos correlation peak combined with the chaos pulse flight *** on this novel optical sensing mechanism,an experiment with 10 cm spatial resolution and 1.4 km sensing distance was conducted,and the spatial resolution was found to be independent of the sensing *** the limit of the existing spatial resolution theory,the spatial resolution of the proposed scheme is 50 times higher than that of the traditional *** scheme also provides a new research direction for optical chaos and optical fiber sensing.

关键词： fiber optical scattering

Synthesis and evaluation of bio-based elastomer based on diethyl itaconate for oil-resistance applications

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Science China Chemistry 2016年第11期59卷 1376-1383页

作者： Weiwei Lei He Qiao xinxin zhou Wencai Wang Liqun Zhang Runguo Wang Kuo-Chih Hua State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials Beijing University of Chemical Technology Engineering Center of Ministry of Education on Elastomer Materials Energy Saving and Resource Utilization Beijing University of Chemical Technology Goodyear Innovation Center Goodyear Tire & Rubber Co.

Bio-based elastomer poly(diethyl itaconate-co-isoprene)(PDEII) was designed and synthesized by redox-initiated emulsion polymerization from diethyl itaconate and isoprene with mass ratio of 20:80, 40:60, 60:40 and 80:20. The number-average molecular weights of PDEII exceeded 140000 with relatively high yields. The physical properties of PDEII, such as glass transition temperatures and thermostability, were comparable with conventional synthetic elastomers and can be readily tuned by varying the ratio of diethyl itaconate to isoprene. The interaction between silica and PDEII macromolecules was effectively enhanced with the increase of diethyl itaconate content by endowing high polarity. The oil-resistance relevant properties of silica/PDEII80(80% diethyl itaconate, 20% isoprene) such as retention of tensile strength, retention of elongation at break and change in volume even surpass those of silica/NBR 240 S after soaked in ASTM 3# oil at different temperatures.

关键词： bio-based elastomer synthesis oil-resistance

The Effect of Career Plateau on Chinese Employees＇ Affective Commitment： An Indigenous Career Plateau Scale and Two-Mediator Model

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Frontiers of Business Research in China 2014年第3期8卷 346-366页

作者： Baoguo Xie xinxin Lu Wenxia zhou Xun Xin School of Labor and Human Resources Renmin University of China Beijing 100872 China

The two-dimensional （hierarchical and job content） model have been predominating the extant career plateau literature. However, based on Schein＇s cone-shaped organizational mobility model, we contend that stagnation in organizational centrality （inclusive plateau） may be another dimension of career plateau. Furthermore, grounded in social exchange theory and need-satisfaction models, we aim to examine the effects of career plateau on affective commitment and underlying mechanisms. In Study 1, based on a sample of 219 employees from different professions, we developed a primary validation of our three- dimensional career plateau scale. In Study 2, we examined our hypothesized model with another dataset of 288 employees. The results suggest that job satisfaction fully mediates the relationship between the job content plateau, the inclusive plateau and affective commitment. The analysis demonstrates that the specific indirect effect of job content plateauing and inclusion on affective commitment through intrinsic job satisfaction was greater than through extrinsic job satisfaction. However, the hypothesis regarding the relationship between hierarchical plateau and affective commitment was not supported, when another two dimensions of career plateau were added to the model. Our findings provide some theoretical and practical implications.

关键词： career plateau three-factor structure job satisfaction affectivecommitment

Design and synthesis by redox polymerization of a bio-based carboxylic elastomer for green tire

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Science China Chemistry 2015年第10期58卷 1561-1569页

作者： xinxin zhou Runguo Wang Weiwei Lei He Qiao Haoling Ji Liqun Zhang Kuo-Chih Hua Joseph Kulig State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials Beijing Laboratory of Biomedical Materials Goodyear Innovation Center Goodyear Tire & Rubber Company

Poly(dibutyl itaconate-co-isoprene-co-methacrylic acid)(PDIM) elastomer was designed and synthesized by redox emulsion polymerization under mild conditions. PDIM has high molecular weight, relatively high yield, and low glass transition temperature(Tg). The structure of PDIM was determined by FTIR and NMR, and the carboxyl content was obtained by titration in a non-proton solvent. Tensile strength and elongation at break increased with increasing carboxyl content. In addition, the interaction between PDIM and silica was elucidated by rubber process analyzer(RPA) and TEM, and the results showed that the silica-PDIM interaction was strong, but the silica-silica interaction was weak.

关键词： carboxylic rubber bio-based elastomer synthesis redox polymerozation green tire

Pre-constructed SEI on graphite-based interface enables long cycle stability for dual ion sodium batteries

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Chinese Chemical Letters 2023年第7期34卷 323-326页

作者： Bao Li Bobo Cao xinxin zhou Zhuangzhuang Zhang Dongmei Dai Mengmin Jia Dai-Huo Liu Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China

Lithium batteries have been widely used in all over the world for its high energy density, long-term cycle stability. While the resources of lithium metal and transition metal are limited, which restrict their applications in the grid energy storage. Dual ion sodium batteries(DISBs) possess higher energy density,especially owning high power density for its higher operating voltage(> 4.5 V). Nevertheless, the poor oxidation tolerance of carbonate electrolyte and the co-intercalation of solvents accompanied with anions are main obstacles to make the DISBs commercialization. Herein, a physical barrier(artificial SEI film) is pre-constructed in the Na||graphite batteries to solve these thorny problems. With the CSMG(covered SEI on modified graphite), batteries deliver higher capacity 40 mAh/g even under the current density of 300 mA/g and the capacity retention maintains very well after 100 cycles at a high operating ***, the function mechanism was revealed by in-situ XRD, demonstrating that the pre-constructed SEI can effectively suppress the irreversible phase transition and exfoliation of graphite, resulting from the co-intercalation of anions. Additionally, the work voltage windows of carbonate electrolyte are significantly broadened by establishing electrode/electrolyte interphase. This method opens up an avenue for the practical application of DISBs on the grid energy storage and other fields.

关键词： Dual ion sodium batteries Carbonate electrolyte High voltage Anion co-intercalation Pre-constructed SEI

Design and preparation of a crosslinkable,oil-resistant,and bio-based elastomer from fumarate

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Science China Chemistry 2024年第2期67卷 622-631页

作者： Hui Yang Haijun Ji xinxin zhou Shihan Yang Liwei Li Chaoying Sun Weiwei Lei Runguo Wang Liqun Zhang Beijing State Key Laboratory of Organic-Inorganic Composites&Beijing Laboratory of Biomedical Materials Beijing University of Chemical TechnologyBeijing100029China Hubei Key Laboratory of Polymer Materials Faculty of Materials Science and EngineeringHubei UniversityWuhan430062China

Poly(diethyl fumarate-co-methoxyethyl acrylate-co-vinyl chloroacetate)(PDEFMV),a novel bio-based elastomer with a saturated structure,was synthesized via redox emulsion *** glass-transition temperatures of PDEFMV,adjusted through the variation of the diethyl fumarate-to-methoxyethyl acrylate feeding ratio,ranged from-36.1 to-14.8 ℃.The number-average molecular weights of PDEFMV ranged from 384,000 to 46,000 g/*** designing the molecular structure,vinyl chloroacetate was used to provide active sites for subsequent vulcanization and *** active chlorine groups within the PDEFMV chain reacted with the crosslinking agent trithiocyanuric acid under high temperature and pressure to form a nonsulfur crosslinked three-dimensional network *** achieve the desired properties,carbon black(CB,N330) was incorporated to reinforce PDEFMV,leading to the formation of PDEFMV/CB composites.A comprehensive study was conducted on the high-temperature oil resistance of PDEFMV/CB *** immersion in IRM903 oil at temperatures of 150 and 200 ℃ for 72 h,the mass and volume changes in PDEFMV/CB were lower than those observed in commercially available acrylate rubber(AR)/CB,indicating that PDEFMV exhibited superior oil ***,the aging characteristics and mechanisms of oil resistance in the PDEFMV/CB and AR/CB composites were investigated at different temperatures(150,200,and 250 ℃).The results provide insights into the operational temperature ranges suitable for PDEFMV/CB and offer valuable guidance for potential industrial applications.

关键词： diethyl fumarate molecular design bio-based elastomer solvent-free synthetic route high-temperature oil resistance

Slope-assisted Raman distributed optical fiber sensing

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Photonics Research 2022年第1期10卷 205-213页

作者： JIAN LI xinxin zhou YANG XU LIJUN QIAO JIANZHONG ZHANG MINGJIANG ZHANG College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Advanced Transducers and Intelligent Control Systems(Ministry of Education and Shanxi Province) Taiyuan University of TechnologyTaiyuan 030024China

Raman distributed optical fiber sensing is required to achieve accurate temperature measurements in a micro-scale *** this study,we first analyze and demonstrate the pulse transmission feature in the temperature variation area and the superposition characteristics of Raman optical time-domain reflectometry(OTDR)signals by numerical *** equations of superimposed Raman anti-Stokes scattered signals at different stages are presented,providing a theoretical basis for the positioning and physical quantity demodulation of whole optical fiber systems based on the OTDR ***,we propose and experimentally demonstrate a slope-assisted sensing principle and scheme in a Raman distributed optical fiber *** the best our knowledge,this is the first experimental demonstration of Raman distributed optical fiber sensing in a centimeter-level spatial measurement region.

关键词： fiber optical OTDR