检索结果-南通市图书馆

Small intestinal hemolymphangioma treated with enteroscopic injection sclerotherapy: A case report and review of literature

引用

World Journal of Gastroenterology 2020年第13期26卷 1540-1545页

作者： Nian-Jun Xiao Shou-Bin Ning Teng li bai-rong li Tao Sun Department of Gastroenterology Air Force Medical CenterBeijing 100142China Department of Pathology Air Force Medical CenterBeijing 100142China

BACKGROUND Hemolymphangiomas are rare malformations composed of both lymphatic and vascular vessels and are located in the pancreas,spleen,mediastinum,*** intestinal hemolymphangioma is extremely rare and often presents as obscure gastrointestinal *** is rarely diagnosed correctly before the *** injection sclerotherapy is usually used as a management of bleeding in esophageal varices and was occasionally reported as a treatment of vascular *** treatment of small intestinal hemolymphangioma with enteroscopic injection sclerotherapy has not been *** SUMMARY A 42-year-old male complained of recurrent episodes of melena and dizziness,fatigue and reduced exercise capacity for more than 2 *** and blood test revealed a gastric ulcer and *** with oral protonpump inhibitors and iron did not improve *** then performed a capsule endoscopy and anterograde balloon-assisted enteroscopy and revealed a *** it is a benign tumor without malignant potential,we performed enteroscopic injection *** was discharged 4 days *** follow-up 3 mo later,the melena ***-assisted enteroscopy revealed an atrophied tumor atrophied and no *** plasma coagulation was applied to the surface of the hemolymphangioma to accelerated *** he returned for follow-up 1 year later,anemia was resolved and the tumor had been *** Balloon-assisted enteroscopy and capsule endoscopy are effective methods for diagnosis of *** injection sclerotherapy is an effective treatment.

关键词： Hemolymphangioma Lymphangioma Small intestinal tumor Balloon assisted enteroscopy Obscure gastrointestinal bleeding Enteroscopic injection sclerotherapy Case report

来源：

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

High-throughput screening of CO_(2) cycloaddition MOF catalyst with an explainable machine learning model

引用

Green Energy & Environment 2025年第1期10卷 132-138页

作者： Xuefeng bai Yi li Yabo Xie Qiancheng Chen Xin Zhang Jian-rong li Beijing Key Laboratory for Green Catalysis and Separation and Department of Chemical Engineering College of Materials Science&EngineeringBeijing University of TechnologyBeijing100124China

The high porosity and tunable chemical functionality of metal-organic frameworks(MOFs)make it a promising catalyst design ***-throughput screening of catalytic performance is feasible since the large MOF structure database is *** this study,we report a machine learning model for high-throughput screening of MOF catalysts for the CO_(2) cycloaddition *** descriptors for model training were judiciously chosen according to the reaction mechanism,which leads to high accuracy up to 97%for the 75%quantile of the training set as the classification *** feature contribution was further evaluated with SHAP and PDP analysis to provide a certain physical understanding.12,415 hypothetical MOF structures and 100 reported MOFs were evaluated under 100℃ and 1 bar within one day using the model,and 239 potentially efficient catalysts were *** them,MOF-76(Y)achieved the top performance experimentally among reported MOFs,in good agreement with the prediction.

关键词： Metal-organic frameworks High-throughput screening Machine learning Explainable model CO_(2)cycloaddition

来源：

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

Balloon-assisted endoscopic submucosal dissection for treating small intestinal lipomas:Report of two cases

引用

World Journal of Clinical Cases 2021年第7期9卷 1631-1638页

作者： Hong-Yu Chen Shou-Bin Ning Xin Yin bai-rong li Jing Zhang Xiao-Wei Jin Tao Sun Zhi-Bo Xia Xiao-Peng Zhang Department of Gastroenterology Air Force Medical CenterPLA of ChinaBeijing 100142China

BACKGROUND Most small intestinal lipomas are treated surgically,and some require repeated surgeries for multiple ***,application of endoscopic submucosal dissection(ESD)technology in the deep small intestine is rarely reported owing to the special anatomical structure of the small intestine,medical equipment limitations,and the lack of relevant experience among *** SUMMARY Two patients with small intestinal lipomas treated at the Air Force Medical Center from November 2015 to September 2019 were selected to undergo balloonassisted ESD to treat the lipomas and explore the technical feasibility and safety of ESD for treating small intestinal *** two patients successfully underwent balloon-assisted ESD to treat four small intestinal lipomas,with a complete resection rate of 100%(4/4),without intraoperative or postoperative bleeding,perforation,or other *** 3-6 mo of postoperative follow-up,the clinical symptoms caused by the lipomas were significantly relieved or disappeared after *** Balloon-assisted ESD is a safe and reliable new method for treating deep intestinal lipomas and shows good clinical feasibility.

关键词： Endoscopic submucosal dissection Balloon-assisted endoscopy Small intestinal lipoma Gastrointestinal tumor Case report

来源：

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

Deciphering the role of mtH2O2 in hepatic ischemia-reperfusion injury mechanisms with low-background super-resolution fluorogenic probe

引用

Science China Chemistry 2025年第1期68卷 297-307页

作者： Bin Fang limin Wang Haoqin li Jiaxin Zhang Yang Ding Pan Pan li Bo Peng Hua bai lin li Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials &Engineering Northwestern Polytechnical University Institute of Flexible Electronics (IFE Future Technologies) Xiamen University

Hepatic ischemia-reperfusion injury（HIRI） is characterized by mitochondrial dysfunction and oxidative stress. Monitoring mitochondrial hydrogen peroxide（mtH2O2） levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during HIRI. However, low-background fluorogenic probes have been overlooked in the context of super-resolution imaging. In this study, we developed a low-background fluorogenic probe（MitoWG） with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH2O2in HIRI. Activation of the desirable fluorescence properties of the probe by mtH2O2was confirmed using structural illumination microscopy（SIM）, enabling high-quality mitochondrial imaging with exceptional specificity and *** in mtH2O2levels were successfully observed in both cellular and rat models of HIRI. Furthermore, we associated the decline in mitochondrial redox homeostasis with accelerated mtH2O2production during HIRI, which triggered mitophagy deficiency and led to cell death. In conclusion, Mito-WG possesses excellent photophysical and low-background properties for SIM imaging, making it a promising tool for mtH2O2tracking in HIRI research and clinical diagnosis.

关键词： hepatic ischemia-reperfusion injury low-background mtH2O2-activatable super-resolution imaging fluorogenic probe

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

引用

Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： lin Peng Yu bai Hang li Meixiu Qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

lithium-sulfur （li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （liPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes li2S dissolution and nucleation ***,the li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： lithium sulfur batteries

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Hypidone hydrochloride(YL-0919)ameliorates functional deficits after traumatic brain injury in mice by activating the sigma-1 receptor for antioxidation

引用

Neural Regeneration Research 2025年第8期20卷 2325-2336页

作者： Yafan bai Hui Ma Yue Zhang Jinfeng li Xiaojuan Hou Yixin Yang Guyan Wang Yunfeng li Department of Anesthesiology Beijing Tongren HospitalCapital Medical UniversityBeijingChina Beijing Institute of Basic Medical Sciences BeijingChina Hebei North University ZhangjiakouHebei ProvinceChina Beijing Institute of Pharmacology and Toxicology State Key Laboratory of Toxicology and Medical CountermeasuresBeijing Key Laboratory of NeuropsychopharmacologyBeijingChina

Traumatic brain injury involves complex pathophysiological mechanisms,among which oxidative stress significantly contributes to the occurrence of secondary *** this study,we evaluated hypidone hydrochloride(YL-0919),a self-developed antidepressant with selective sigma-1 receptor agonist properties,and its associated mechanisms and targets in traumatic brain *** experiments to assess functional deficits were followed by assessment of neuronal damage through histological analyses and examination of blood-brain barrier permeability and brain ***,we investigated the antioxidative effects of YL-0919 by assessing the levels of traditional markers of oxidative stress in vivo in mice and in vitro in HT22 ***,the targeted action of YL-0919 was verified by employing a sigma-1 receptor antagonist(BD-1047).Our findings demonstrated that YL-0919 markedly improved deficits in motor function and spatial cognition on day 3 post traumatic brain injury,while also decreasing neuronal mortality and reversing blood-brain barrier disruption and brain ***,YL-0919 effectively combated oxidative stress both in vivo and in *** protective effects of YL-0919 were partially inhibited by *** results indicated that YL-0919 relieved impairments in motor and spatial cognition by restraining oxidative stress,a neuroprotective effect that was partially reversed by the sigma-1 receptor antagonist ***-0919 may have potential as a new treatment for traumatic brain injury.

关键词： antidepressant drug blood-brain barrier cognitive function hypidone hydrochloride(YL-0919) neurological function nuclear factor-erythroid 2 related factor 2 oxidative stress sigma-1 receptor superoxide dismutase traumatic brain injury

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

低氮胁迫对不同品种小黑麦幼苗生长及快速叶绿素荧光动力学参数的影响

引用

中国草地学报 2019年第6期41卷 37-42页

作者：时丽冉白丽荣郭晓丽衡水学院生命科学系河北衡水053000

为研究不同供氮水平对不同品种小黑麦氮素及叶绿素荧光参数的影响,以4个品种的小黑麦幼苗作为实验材料,通过正常供氮(1mmol/L)、中等缺氮(0.5mmol/L)和重度缺氮(0.2mmol/L)3个不同处理开展苗期水培试验,处理30d后进行鲜重、根冠比、氮... 详细信息

为研究不同供氮水平对不同品种小黑麦氮素及叶绿素荧光参数的影响,以4个品种的小黑麦幼苗作为实验材料,通过正常供氮(1mmol/L)、中等缺氮(0.5mmol/L)和重度缺氮(0.2mmol/L)3个不同处理开展苗期水培试验,处理30d后进行鲜重、根冠比、氮素含量、叶绿素含量及快速叶绿素荧光动力学参数的测定。结果表明,4个品种的鲜重均随氮供给的降低而下降。冀饲1号和劲松49在中等缺氮下鲜重下降不显著,低氮胁迫下所有品种鲜重显著低于对照;所有品种的根冠比随氮营养的降低而增高,叶绿素含量和叶片含氮量逐渐下降,冀饲1号变化最小,中饲237变化幅度最大。快速叶绿素荧光动力学参数中,缺氮胁迫使4个品种的初始荧光Fo和最大荧光Fm出现上升,其中冀饲1号上升幅度最小,PSⅡ原初光能转化效率Fv/Fm、代表PSⅡ的潜在活性的Fv/Fo、以及PSII反应中心捕获光能PIABS均出现降低,4个品种中冀饲1号下降最少。反映热耗散的非光化学淬灭系数(NPQ)明显升高,冀饲1号升高较少。综合以上指标,4个品种中冀饲1号表现最佳,属于氮高效利用品种。

关键词：小黑麦氮胁迫光系统Ⅱ 叶绿素荧光动力学参数

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

引用

Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei Tang Shulin bai Xiaodong li Peng Ai Wanrong Guo Tuo Zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

超声波清洗RDX的数值模拟和安全性分析

引用

火炸药学报 2017年第1期40卷 45-48页

作者：蒋云芸吴鹏飞白丽荣韩博王金波白立新中国五洲工程设计集团有限公司北京100053 中国科学院声学研究所北京100190 山东煤炭技术学院山东淄博255120

建立了超声波清洗RDX过程中空泡溃灭过程的数值模型,并从微观角度进行了理论分析,研究了空泡溃灭产生的高温、冲击波和瞬间能量释放等潜在的引爆风险。结果表明,空泡存在空间小,存在时间极短(10-9s量级),空泡溃灭过程中脉冲温度虽高,但... 详细信息

建立了超声波清洗RDX过程中空泡溃灭过程的数值模型,并从微观角度进行了理论分析,研究了空泡溃灭产生的高温、冲击波和瞬间能量释放等潜在的引爆风险。结果表明,空泡存在空间小,存在时间极短(10-9s量级),空泡溃灭过程中脉冲温度虽高,但并不满足RDX的起爆条件;脉冲压力虽高,但冲击波在水中迅速衰减,热量会迅速被水吸收;理论计算获得的空泡溃灭能量比RDX的最小引燃能量小几个数量级。超声清洗技术用于RDX颗粒的清洗是安全的。

关键词：黑索金 RDX 超声波清洗空化安全性数值模拟

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

旱稻65及其杂交后代的RAPD分析

引用

湖北农业科学 2013年第18期52卷 4519-4521页

作者：郭晓丽白丽荣衡水学院生命科学学院河北衡水053000

利用随机扩增多态性DNA标记(RAPD)从分子水平检测旱稻65(*** *** rice 65)及杂交后代间的遗传差异。采用20对随机引物对两者基因组DNA进行RAPD-PCR扩增。结果表明,RAPD共扩增出159个位点,其中多态性位点有33个,占总位点的20.75%。旱稻6... 详细信息

利用随机扩增多态性DNA标记(RAPD)从分子水平检测旱稻65(*** *** rice 65)及杂交后代间的遗传差异。采用20对随机引物对两者基因组DNA进行RAPD-PCR扩增。结果表明,RAPD共扩增出159个位点,其中多态性位点有33个,占总位点的20.75%。旱稻65和杂交后代之间存在RAPD多态性,表明旱稻65和杂交后代之间DNA水平存在差异。

关键词：旱稻65(Oryza sativa L cv upland rice 65) 杂交后代随机扩增多态性DNA标记(RAPD) 聚合酶链式反应式(PCR)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：