检索结果-南通市图书馆

未来食品学报(英文) 2023年第1期3卷 37-42页

作者： Hui Hao chun cui Yuqing Xing Xuewei Jia Bingjie Ma Wenyi Kang Tianxiao Li Mingqi Gao chunping Xu China Tobacco Henan Industry Co.Ltd. Zhengzhou 450000China College of Food and Biological Engineering Zhengzhou University of Light IndustryZhengzhou 450000China National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China

An acidic extracellular polysaccharide(EPS)was gained from Stropharia rugosoannulata fermentation broth by the alcohol precipitate *** derivative of EPS(S-EPS)was gained by chlorosulfonic acid-pyridine method and the conditions were as follows:pyridine as the reaction solvent,temperature 80°C,and reaction time 90 *** chemical structure and chain conformation of EPS and S-EPS were characterized by FT-IR,NMR and size exclusion chromatography(SEC)coupled with multi-angle laser light scattering(MALLS)***-IR spectra indicated the sulfated group was linked to the *** EPS mainly consists of mannose,glucose and glucuronic acid,and the glycosidic bond type is mainly(1→4)-linked and(1→6)-linked.C6 and C2 were substituted by sulfate *** EPS was degraded into smaller molecular weight(Mw)polysaccharides with the larger molecular size(Rg)after sulfation and S-EPS has better ***,the sulfated derivative S-EPS was found to have a better scavenging ability on hydroxyl radicals than *** proved that the chemical modification of *** polysaccharides by sulfation effectively enhanced their antioxidant activity.

关键词： Polysaccharides Stropharia rugosoannulata Sulfation Antioxidant activity

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于线纹尺的线结构光视觉传感器标定新方法

华南理工大学学报（自然科学版） 2016年第1期44卷 71-77页

作者：邝泳聪崔亮纯华南理工大学机械与汽车工程学院广东广州510640

为了实现传感器简单、快速、高精度的标定,提出了一种基于线纹尺的线结构光视觉传感器直接标定新方法,设计了平面靶标与特征点提取算法.即通过获取已知三维空间坐标特征点的图像坐标,直接建立亚像素物像索引表,实现了系统的直接标定.标... 详细信息

为了实现传感器简单、快速、高精度的标定,提出了一种基于线纹尺的线结构光视觉传感器直接标定新方法,设计了平面靶标与特征点提取算法.即通过获取已知三维空间坐标特征点的图像坐标,直接建立亚像素物像索引表,实现了系统的直接标定.标定实验与测量实验结果表明:文中标定新方法操作简单,易于实现,具有较高的标定精度,Z轴、X轴方向的测量误差均值分别为0.0045 mm和0.0130 mm,能够满足工业生产与测量的基本需求.

关键词：线结构光视觉传感器标定特征点提取三维测量

Advances in the Surgical Treatment of Neuroblastoma

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2018年第19期131卷 2332-2337页

作者： Yan-Bing Luo Xi-chun cui Lin Yang Da Zhang Jia-Xiang Wang Department of Pediatric Surgery The First Affiliated Hospital of Zhengzhou University Zhengzhou University Zhengzhou Henan 450052 China

Objective：This study was to review the efficacy of surgical resections in different clinical situations for a better understanding of the meaning of surgery in the treatment of neuroblastoma （NB）.Data Sources：The online database ScienceDirect （2016-2018） was *** search was conducted using the keywords ＂neuroblastoma,＂＂neuroblastoma resection,＂＂neuroblastoma surgery,＂ and ＂high-risk neuroblastoma.＂Study Selection：We retrospectively analyzed of patients who underwent surgical resections in different clinical *** article included findings from selected relevant randomized controlled trials,systematic reviews,and meta-analyses or good-quality observational *** only,letters,and editorial notes were ***-text articles and abstracts were extracted and reviewed to identify key articles discussing surgery management of NB,which were then selected for critical ***：A total of 7800 English language articles were found containing references to NB （2016-2018）.The 163 articles were searched which were related to the surgical treatment of NB （2016-2018）.Through the analysis of these important articles,we found that the treatments of NB at low-and intermediate-risk groups were basically the ***-risk patients remained ***：NB prognosis varies tremendously based on the stage and biologic features of the *** reviewing the relevant literature,patients with low-risk disease are often managed with surgical resection or observation alone with tumors likely to spontaneously regress that are not causing *** patients are treated with chemotherapy with the number of cycles depending on their response as well as surgical resection of the primary ***-risk patients remain *** intensive treatment is essential,especially for patients who received subtotal tumor *** invasive surgery for the treatment of NBs without image-defined risk factor

关键词： Advance High Risk Neuroblastoma Surgical Resection Survival

Integration of the metabolome and transcriptome reveals the metabolites and genes related to nutritional and medicinal value in Coriandrum sativum

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2021年第7期20卷 1807-1818页

作者： WU Tong FENG Shu-yan YANG Qi-hang Preetida J BHETARIYA GONG Ke cui chun-lin SONG Jie PING Xiao-rui PEI Qiao-ying YU Tong SONG Xiao-ming College of Life Sciences North China University of Science and TechnologyTangshan 063210P.R.China Department of Biostatistics Harvard School of Public HealthBostonMA 02115USA Food Science and Technology Department University of Nebraska-LincolnLincolnNE 68526USA Center for Informational Biology School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu 610054P.R.China

Coriandrum sativum(Coriander) or Chinese parsley is a culinary herb with multiple medicinal effects, which is widely used in cooking and traditional medicine. It is enriched with essential oils and anti-oxidant compounds with unknown significance. To explore the untapped reservoir of Coriander, we studied the transcriptome and metabolic profiles from three developmental stages. Here, we identified 10 tyrosine metabolic pathway-related genes(TMPRGs), six porphyrins and chlorophyll metabolic pathway-related genes(PCMPRGs), and five Vitamin E metabolic pathway-related genes(VEMPRGs). These genes were associated with the early development of Coriander. Our analysis suggests that these pathways are involved in the production of critical phenolic metabolites. Furthermore, we constructed the interaction network between these pathway-related genes and transcription factors(TFs), which supported the regulatory pathways for phenolic metabolites. Interestingly, we identified several nutritional or medicinally relevant metabolites, including 59 phenols, two polyamines, 12 alkaloids, and one terpenoid. The higher concentrations of metabolites were from caffeic acid, agmatine, and its derivatives. We found higher levels of caffeic acid and agmatine at 30 days compared to 60 or 90 days. This study provides evidence to stimulate further investigation of the role of these metabolites in medicinal and nutritional research.

关键词： metabolomics transcriptome regulatory network phenolic compounds Coriander

Surface interrogation mode of scanning electrochemical microscopy for oxidation study of adsorbed CO generated from serine on platinum

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2011年第12期22卷 1481-1484页

作者： chun cui Huang,Qian Wang,De Bo Xiang,Hui Bo Shao~* Key Laboratory of Cluster Science,Ministry of Education of China,School of Chemistry, Beijing Institute of Technology,Beijing 100081,China Key Laboratory of Cluster Science Ministry of Education of China School of Chemistry Beijing Institute of Technology Beijing 100081 China

We report a new method for detection and oxidation of adsorbed carbon monoxide(CO;) generated from serine on a polycrystalline platinum ultramicroelectrode（UME） by bromine（Br;） using in situ surface interrogation（SI） mode of scanning electrochemical microscopy（SECM）.In the SI mode,tip and substrate are both Pt UMEs,and CO;on Pt substrate,generated from serine,can be oxidized by the tip-generated Br;giving a positive *** CO;from serine instead of purging CO gas expands the newly introduced reaction of Br;with CO;and further enhances the hope to get rid of CO;on Pt for fuel cells.

关键词： SECM Surface interrogation mode Adsorbed carbon monoxide Serine Pt ultramicroelectrode

Acute Appendicitis in the Early Stage after Orthotopic Liver Transplantation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Medical Journal 2017年第10期130卷 1253-1254页

作者： Jun-Feng Huang Jie-Fei Ma Yu Gong Ling-Ling Yu chun-Xiao cui Liu-Xiao Yang Jian Zhou Du-Ming Zhu Ting Wang Department of Intensive Care Medicine Zhonqshan Hospital Fudan University Shanghai 200032 China Department of Liver Surgery Zhongshan Hospital Fudan University Shanghai 200032 China

Acute appendicitis is one of the most common surgical diseases in the general population, but it rarely happens after orthotopic liver transplantation （OLT）, The impaired immune function in these patients usually predisposes them to a delay in diagnosis owing to an atypical presentation, which might increase complications including death. It is reported that acute appendicitis after liver transplantation happens mostly after postoperative day （POD） 14. Herein, we presented two cases of acute appendicitis after OLT happened within POD 14.

关键词： Appendicitis Immunosuppression Liver Transplantation

聚合物电解质膜中质子输送过程的Monte Carlo模拟

在线全文

学校读者我要写书评

暂无评论

高分子材料科学与工程 2005年第2期21卷 181-184页

作者：浦鸿汀崔春涛同济大学材料学院高分子材料系上海200092

模拟了质子在质子交换膜中的输送过程。通过构造新模型,研究了质子数等因素对质子在质子交换膜中输送过程的影响。有实验资料表明质子在膜中的大多数输送是链段运动和质子跃迁双重作用的结果,利用模拟参数本文将输送的质子数表征为链段... 详细信息

模拟了质子在质子交换膜中的输送过程。通过构造新模型,研究了质子数等因素对质子在质子交换膜中输送过程的影响。有实验资料表明质子在膜中的大多数输送是链段运动和质子跃迁双重作用的结果,利用模拟参数本文将输送的质子数表征为链段运动和质子跃迁两项和的形式。随着质子浓度的增加,质子输送数随之增加,达一定值后又随之下降。同时质子输送数随着链段长度、链数、总链段浓度等的增加而增加。而随着链段运动恢复时间的相对增加,质子的跃迁数略有下降。此外,随链容纳质子数的增加,可运动质子数随之增加,达一定值后渐达平衡值。这些结论与文献报道的实验结果基本相符。

关键词：质子交换膜模拟质子输送

Single transition-metal atoms anchored on a novel Diracdispersiveπ-πconjugated holey graphitic carbon nitride substrate:computational screening toward efficient bifunctional OER/ORR electrocatalysts

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第8期43卷 3819-3832页

作者： chun-Yao Fang Xi-Hang Zhang Qiang Zhang Di Liu Xiao-Meng cui Jing-Cheng Xu Cheng-Long Shi Meng-Yu Yang College of Science University of Shanghai for Science and TechnologyShanghai 200093China School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China

Nonprecious-metal-group single-metal-atom catalysts with bifunctional catalytic capabilities toward the oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)are highly sought after in energy-conversion and storage ***,producing renewable and sustainable energy sources remains ***,single-transition metal atoms anchored onπ-πconjugated two-dimensional(2D)graphitic carbon nitride substrates formπ-d conjugated conductive channels that enhance the overall electrocatalytic ***,firstprinciples calculations were carried out to design and demonstrate a novel macropore graphitic carbon nitride(gC_(10)N_(3))as a promising 2D electrocatalyst substrate to support single-transition metal(TM,from Sc to Au).The"donation-acceptance"charge interaction in the TM-N_(2)moiety effectively balances the adsorption strength of oxygenated intermediates in Ni@g-C_(10)N_(3)and Rh@gC_(10)N_3,making them effective bifunctional OER/ORR electrocatalysts with IrO_(2)/Pt-beyond overpotentials being as low as 0.39/0.38 V and 0.54/0.44 V,***,they possess high stability and conductivity and are less susceptible to oxidation and corrosion under working *** guarantees high activity under ambient ***,the origin of the OER/ORR activity of TM@g-C_(10)N_(3) is explained using multilevel descriptors:intrinsic(p,Bader charge,integral crystal orbital Hamilton population(ICOHP),bond length,and d-band center(εd).In particular,for optimal Ni@g-C_(10)N_(3),the clear hybridization between the Ni-d orbital and surface O-p orbital causes the paired electrons to occupy the bonding *** enables OH~*to be adsorbed on the Ni@g-C_(10)N_(3),thereby achieving the highest catalytic performance.

关键词： First-principles calculation Oxygen evolution reaction Oxygen reduction reaction Bifunctional electrocatalysts Single-metal-atom electrocatalysts

在线全文

学校读者我要写书评

暂无评论

基于最佳证据构建腹膜透析患者照护管理方案

中国血液净化 2024年第8期23卷 625-629页

作者：曹培叶赵慧萍武蓓芦丽霞乔婕楚新新门春翠何玉婷北京大学人民医院肾内科北京100044

目的构建腹膜透析患者照护管理方案,为医护人员对腹膜透析患者进行照护管理提供理论参考。方法系统检索国内外证据,以最佳证据总结为指导,构建腹膜透析患者照护管理方案初稿。2022年9─10月采用德尔菲法(专家咨询法)对34名专家进行函询... 详细信息

目的构建腹膜透析患者照护管理方案,为医护人员对腹膜透析患者进行照护管理提供理论参考。方法系统检索国内外证据,以最佳证据总结为指导,构建腹膜透析患者照护管理方案初稿。2022年9─10月采用德尔菲法(专家咨询法)对34名专家进行函询,收集专家意见并修订,形成方案终稿。结果2轮专家函询问卷的有效回收率分别为89.47%和97.06%,专家的权威系数分别为0.936和0.942,第2轮函询中,一、二级条目专家意见协调系数分别为0.248和0.145(P<0.001)。最终确立腹膜透析患者照护管理方案包含7个一级指标,48个二级指标。结论为进一步提高腹膜透析患者居家治疗有效性,改善患者生活质量,采用德尔菲法构建了腹膜透析患者照护管理方案,可为医护人员临床实践提供参考。其可实施性和临床效益有待进一步验证。

关键词：腹膜透析照护德尔菲法最佳证据

Generation of GGTA1 biallelic knockout pigs via zinc-finger nucleases and somatic cell nuclear transfer

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2014年第2期57卷 263-268页

作者： BAO Lei CHEN HaiDe JONG UiMyong RIM CholHo LI WenLing LIN XiJuan ZHANG Dan LUO Qiong cui chun HUANG HeFeng ZHANG Yan XIAO Lei FU ZhiXin College of Animal Sciences School of Medicine Zhejiang University Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological SciencesChinese Academy of Sciences Department of Animal Cloning Cloning Research Center Biotechnology Branch Academy of Sciences Pyongyang the Democratic People's Republic of Korea Department of Reproductive Endocrinology Women's Hospital School of Medicine Zhejiang University Key Laboratory of Reproductive Genetics Zhejiang University Department of Reproductive Genetics Women's Hospital School of Medicine Zhejiang University Key Laboratory of Reproductive Genetics Zhejiang UniversityMinistry of Education Department of Obstetrics Women's Hospital School of Medicine Zhejiang University Institut Pasteur of Shanghai Shanghai Institutes for Biological SciencesChinese Academy of Sciences College of Animal Science and Technology Hebei Normal University of Science and Technology

Genetically modified pigs are valuable models of human disease and donors of xenotransplanted *** gene targeting in pig somatic cells is extremely ***-finger nuclease(ZFN)technology has been shown to be a powerful tool for efficiently inducing mutations in the ***,ZFN-mediated targeting in pigs has rarely been ***,we used ZFNs to knock out the porcineα-1,3-galactosyl-transferase(GGTA1)gene,which generates Gal epitopes that trigger hyperacute immune rejection in pig-to-human *** pig fibroblasts were transfected with ZFNs targeting the coding region of *** mono-allelic and four biallelic knockout cell clones were obtained after drug selection with efficiencies of 23.4%and 5.2%,*** biallelic cells were used to produce cloned pigs via somatic cell nuclear transfer(SCNT).Three GGTA1 null piglets were born,and one knockout primary fibroblast cell line was established from a cloned *** epitopes on GGTA1 null pig cells were completely eliminated from the cell ***,GGTA1 knockout cells were protected from complement-mediated immune attacks when incubated with human *** study demonstrated that ZFN is an efficient tool in creating gene-modified ***1 null pigs and GGTA1 null fetal fibroblasts would benefit research and pig-to-human transplantation.

关键词： pig xenotransplantation ZFNs GGTA1 biallelic knockout SCNT