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Quantum phase transition and destruction of Kondo effect in pressurized smB6

science Bulletin 2017年第21期62卷 1439-1444页

作者： yazhou zhou qi wu priscila f.s.rosa rong yu jing guo wei yi shan zhang zhe wang honghong wang shu cai ke yang aiguo li zheng jiang shuo zhang xiangjun wei yuying huang peijie sun yi-feng yang zachary fisk qimiao si zhongxian zhao liling sun institute of physics and beijing national laboratory for condensed matter physics chinese academy of sciencesBeijing 100190China department of physics and astronomy university of californiaIrvineCA 92697USA los alamos national laboratory NM 87545USA department of physics renmin university of chinaBejing 100872China shanghai synchrotron Radiation facilities Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China Department of Physics&Astronomy Rice UniversityHoustonTX 77005USA Collaborative Innovation Center of Quantum Matter Beijing 100190China University of Chinese Acadermy of sciences Beijing 100190China Department of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Colaborative Innovation Center of Advanced Microstructures Nanjing 210093China

smB_6 has been a well-known Kondo insulator for decades, but recently attracts extensive new attention as a candidate topological system. studying smB_6 under pressure provides an opportunity to acquire the much-needed understanding about the effect of electron correlations on both the metallic surface state and bulk insulating state. Here we do so by studying the evolution of two transport gaps(low temperature gap E_l and high temperature gap E_h) associated with the Kondo effect by measuring the electrical resistivity under high pressure and low temperature(0.3 K) conditions. We associate the gaps with the bulk Kondo hybridization, and from their evolution with pressure we demonstrate an insulator-tometal transition at ~4 GPa. At the transition pressure, a large change in the Hall number and a divergence tendency of the electron-electron scattering coefficient provide evidence for a destruction of the Kondo entanglement in the ground state. Our results raise the new prospect for studying topological electronic states in quantum critical materials settings.

关键词： Kondo insulator surface state smB6 High pressure

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spatial cluster mapping and environmental modeling in pediatric inflammatory bowel disease

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World Journal of Gastroenterology 2023年第23期29卷 3688-3702页

作者： Mielle Michaux Justin M Chan Luke Bergmann Luis.f.Chaves Brian Klinkenberg Kevan Jacobson Department of Pediatrics Division of GastroenterologyHepatology and NutritionFaculty of MedicineBritish Columbia Children’s HospitalUniversity of British ColumbiaVancouver V6H 3V4British ColumbiaCanada British Columbia Children’s Hospital Research Institute British Columbia Children’s HospitalVancouver V5Z 4H4British ColumbiaCanada Department of Geography University of British ColumbiaVancouver V6T 1Z2British ColumbiaCanada Department of Environmental and Occupational Health School of Public HealthIndiana UniversityBloomingtonIN 47405United States Department of Cellular and Physiological sciences University of British ColumbiaVancouver V6T 1Z3British ColumbiaCanada

BACKGROUND Geographical(geospatial)clusters have been observed in inflammatory bowel disease(IBD)incidence and linked to environmental determinants of disease,but pediatric spatial patterns in North America are *** hypothesized that we would identify geospatial clusters in the pediatric IBD(PIBD)population of British Columbia(BC),Canada and associate incidence with ethnicity and environmental *** To identify PIBD clusters and model how spatial patterns are associated with population ethnicity and environmental *** One thousand one hundred eighty-three patients were included from a BC Children’s Hospital clinical registry who met the criteria of diagnosis with IBD≤age 16.9 from 2001–2016 with a valid postal code on file.A spatial cluster detection routine was used to identify areas with similar *** ecological analysis employed Poisson rate models of IBD,Crohn’s disease(CD),and ulcerative colitis(UC)cases as.f.nctions of areal population ethnicity,rurality,average family size and income,average population exposure to green space,air pollution,and vitamin-D weighted ultraviolet light from the Canadian Environmental Health Research Consortium,and pesticide *** Hot spots(high incidence)were identified in Metro Vancouver(IBD,CD,UC),southern Okanagan regions(IBD,CD),and Vancouver Island(CD).Cold spots(low incidence)were identified in southeastern BC(IBD,CD,UC),Northern BC(IBD,CD),and on BC’s coast(UC).No high incidence hot spots were detected in the densest urban *** results were represented as incidence rate ratios(IRR)with 95%*** risk factors.f.r PIBD included fine particulate matter(PM2.5)pollution(IRR=1.294,CI=1.113-1.507,Pf petroleum oil to orchards and grapes(IRR=1.135,CI=1.007-1.270,P=0.033).south Asian population(IRR=1.020,CI=1.011-1.028,Ps a risk factor and Indigenous population(IRR=0.956,CI=0.941-0.971,Pfamily size(IRR=0.467,CI=0.268-0.81

关键词： Inflammatory bowel diseases Crohn disease Ulcerative colitis Pesticides Air pollution south Asian people

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Electronic devices and circuits

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1000年

作者： Theodore f. Bogart Jeffrey s. Beasley Guillermo Rico

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Dams and floods

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Engineering 2017年第1期3卷 144-149页

作者： f. Lempérière HydroCoop Paris 92190 France

The possible mitigation of floods by dams and the risk to dams.f.om floods are key problems. The People's Republic of China is now leading world dam construction with great success and efficiency. This paper is devoted to relevant experiences.f.om other countries, with a particular focus on lessons.f.om accidents over the past two centuries and on new solutions. Accidents.f.om floods are analyzed according to the dam's height, storage, dam material, and spillway data. Most of the huge accidents that have been reported occurred for embankments storing over 10 hm3. New solutions appear promising for both dam s.f.ty and flood mitigation.

关键词： floods.f.ood mitigation spillways Labyrinth spillways Dam failures

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Hepatocellular carcinoma in Egypt: A single center study over a decade

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World Journal of Gastroenterology 2005年第33期11卷 5193-5198页

作者： Adbel-Rahman El-Zayadi Hanaa M Badran Eman Mf Barakat Mohy El-Deen Attia sherine shawky Mostafa K Mohamed Osaima selim ahmed saeid Department of Tropical Medicine Ain shams University Cairo Egypt Department of Hepatology National Liver Institute MenoufeyaEgypt Department of Tropical Medicine Ain shams University Cairo Egypt Department of Hepatology and Gastroenterology Theodor Bilharz Research Institute Cairo Egypt The social Research Center The American University in Cairo Egypt Department of Community Medicine Ain shams University CairoEgypt Department of Clinical Pathology Ain shams University CairoEgypt Cairo Liver Center Giza Egypt

AIM： To identify the trend, possible risk factors and any pattern change of hepatocellular carcinoma （HCC） in Egypt over a decade. METHODs： All HCC patients attending Cairo Liver Center between January 1993 and December 2002, were enrolled in the study. Diagnosis of HCC was based on histopathological examination and/or detection of hepatic focal lesions by two imaging techniques plus α-fetoprotein level above 200 ng/mL. The duration of the study was divided into two periods of 5 years each; period Ⅰ （1993-1997） and period Ⅱ （1998-2002）. Trend, demographic features of patients （age, gender, and residence）, risk factors （HBsAg, HCV-Ab, schistosomiasis and others） and pattern of the focal lesions were compared between the two periods. Logistic regression model was.f.tted to calculate the adjusted odds ratios.f.r the potential risk factors. The population attributable risk percentage was calculated to estimate the proportion of HCC attributed to hepatitis B and C viral infections. REsULTs： Over a decade, 1 328 HCC patients out of 22 450 chronic liver disease （CLD） patients were diagnosed with an overall proportion of 5.9%. The annual proportion of HCC showed a significant rising trend from 4.0% in 1993 to 7.2% in 2002 （P = 0.000）. A significant increase in male proportion from 82.5% to 87.6% （P = 0.009）; M/f from 5：1 to 7：1 and a slight increase of the predominant age group （40-59 years） from 62.6% to 66.8% （P = 0.387）in periods Ⅰ and Ⅱ respectively, reflecting a shift to younger age group. In the bivariate analysis, HCC was significantly higher in rural residents, patients with history of schistosomiasis and/or blood transfusion. Yet, after adjustment, these variables did not have a significant risk for development of HCC. There was a significant decline of HBsAg from 38.6% to 20.5% （P = 0.000）, and a slight increase of HCV-Ab from 85.6% to 87.9% in periods I and II respectively. HBV conferred a higher risk to develop HCC more than HCV in period Ⅰ （OR 1.9 vsl.6） and pe

关键词： Hepatocellular carcinoma HCC prevalence HCCrisk factors Pattern of HCC HCV and HCC HBV and HCC

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Granulomatous Inflammatory Reaction in Breast silicone Implants

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Journal of Life sciences 2014年第6期8卷 558-562页

作者： Tammaro A. Giulianelli V. NarcisiA. Abruzzese C. Cortesi G. Parisella f.R. Persechino s. Grippaudo f.R. UOC of Dermatology University Sapienza University of Rome Via di Grottarossa 1039 00189 Italy Premedical school of Medicine University of Towson Maryland 8000 York Road Towson MD 21252-0001 USA Plastic surgery Unit NESMOS Dept Sapienza University of Rome Via di Grottarossa 1039 00189 Italy

Introduction： breast implants have been used to correct the size and the form of a breast in post-mastectomy breast reconstruction, for correcting congenital defects and deformities or for purely aesthetic breast augmentation. silicone breast implants were introduced in the 1960s. They are non without complications, like rupture is or silicone gel bleeding. Materials and methods： the authors present the case of 50 patients, aged 45-55, who presented to our attention after 15 （＋ 5） years of the application of silicone breast implant for the appearance of lumps under the skin in the armpit area. These were palpable, painless except on palpation. The patients reported burning in the affected area, but no other symptoms. Results： considering the presence in each of them of silicone implants, and assuming a possible allergic basis, the authors performed a patch test series s1DAPA produced by f.I.R.M.A spa, firenze, ultrasound and MR and blood tests. In all patients the allergy test （patch test） were negative, ultrasound and MR have shown that no hearing was damaged or broken. Blood test showed no abnormalities. Discussion： comparing the authors＇ study with other similar works in the literature, they noted that the reported cases of hypersensitivity type 4 silicone prosthesis was not only initially accompanied by specific symptoms such as urticaria and blistering, but mostly it was.f.und to be a net positive patch test. The absence of urticaria, the low values of lgE and total negativity of patch test confirmed the purely inflammatory nature of the lesions in our patients.

关键词： silicone breast implant inflammation siliconoma patch test.

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Ambient noise H/V spectral ratio in site effects estimation in fateh jang area, Pakistan

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Earthquake science 2015年第1期28卷 87-95页

作者： s.M.Talha Qadri Bushra Nawaz s.H.sajjad Riaz Ahmad sheikh Department of Earth sciences University of Sargodha College of Earth and Environmental sciences University of the Punjab

Local geology or local site effect is a crucial component while conducting seismic risk assessment studies. Investigations made by utilization of ambient noise are an effective tool for local site estimation. The present study is conducted to perform site response analysis at 13 different sites within urban settlements of fateh jang area （Pakistan）. The aim of this study was achieved by utilizing Nakamura method or H/V spectral ratio method. some important local site parameters, e.g., the fundamental fre- quencies.f. of s.f. sediments, amplitudes A0 of corre- sponding H/V spectral ratios, and alluvium thicknesses over 13 sites within the study area, were measured and analyzed. The results show that the study area reflects low fundamental frequency fo. The fundamental frequencies of the sediments are highly variable and lie in a range of 0.6-13.0 Hz. similarly, amplification factors at these sites are in the range of 2.0-4.0.

关键词： Local site effectspectral ratios fundamentalfactor Alluvium thickness Ambient noise H/Vfrequency Amplification

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一种新型水浴冷冻夹具在大鼠跟腱力学测试中的应用

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生物医学工程学杂志 2014年第3期31卷 678-681页

作者：刘二福孙妍君彭永金徐伟王业全许康 Mohanad Khalid ahmed 吕永钢杨力 "生物流变科学与技术"教育部重点实验室&重庆大学生物工程学院国家"111计划"基地重庆400044 东风汽车公司技术中心武汉430058 重庆市公安局物证鉴定中心重庆400021

设计一种新型的冷冻水浴型夹具,用于解决大鼠跟腱力学测试的问题。以sD大鼠肌肉-跟腱-跟骨为单元的样本随机分成A、B两组。A组:大鼠跟腱样本采用设计的新型水浴型冷冻夹具;B组:大鼠跟腱样本采用传统非水浴冷冻夹具。结果显示,在力学测... 详细信息

设计一种新型的冷冻水浴型夹具,用于解决大鼠跟腱力学测试的问题。以sD大鼠肌肉-跟腱-跟骨为单元的样本随机分成A、B两组。A组:大鼠跟腱样本采用设计的新型水浴型冷冻夹具;B组:大鼠跟腱样本采用传统非水浴冷冻夹具。结果显示,在力学测试过程中,A组样本无一滑脱,跟腱处于生理活性状态;B组样本有一根滑脱,其他样本跟腱有明显被冷冻现象。A组样本平均最大应力、最大断裂点位移以及杨氏模量较B组差异均有统计学意义(P<0.05)。实验结果表明,新的冷冻水浴型夹具优于传统非水浴条件冷冻夹具,能够更好地模拟体内环境条件测试跟腱的力学性质。

关键词：冷冻水浴型夹具跟腱力学拉伸测试应用

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项目计划技术

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丛书名：广联达项目管理经典译丛

2008年

作者：帕维兹·f·拉德维特·s·阿南泰特穆拉

由美国资深的咨询师撰写本书，针对各行业项目规划技术中存在的共性，介绍了成本和时间持续估算的准确性以及成本超支和进度拖延的问题，提供了代表若干行业的工作分解结构、资源分解结构、项目估算以及网络图等，从而反映了项目管理领... 详细信息

ISBN: (纸本)7121062429

由美国资深的咨询师撰写本书，针对各行业项目规划技术中存在的共性，介绍了成本和时间持续估算的准确性以及成本超支和进度拖延的问题，提供了代表若干行业的工作分解结构、资源分解结构、项目估算以及网络图等，从而反映了项目管理领域中的实践经验和严谨性，促使职业项目管理人员从专业性和科学性的双重角度理解项目规划的各个事项。本书还附有一张介绍了9个典型项目在实践中如何进行项目规划设计的CD。

关键词：项目管理

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Phytochemical composition, biological potential and enzyme inhibition activity of scandix pecten-veneris L.

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Journal of Zhejiang University-science B(Biomedicine & Biotechnology) 2018年第2期19卷 120-129页

作者： Abdul WAHAB syed Aleem JAN Abdur RAUf Zia ur REHMAN Zahid KHAN Aftab ahmed fatima sYED sher Zaman s.f. Hamayun KHAN Muhammad IMRAN Department of Chemistry Islamia College University Biochemistry section Institute of Chemical sciences University of Peshawar Department of Chemistry University of Swabi Department of Botany Islamia College University state Key Laboratory of Chemical Resource Engineering College of Life Science and TechnologyBeijing University of Chemical Technology Interdisciplinary Research Center in Biomedical Materials COMSATS Institute of Information Technology

Objective： scandix pecten-veneris L. is a less studied wild edible herb and is considered an extinct plant species in many parts of the world. This study was designed to evaluate its phytochemical composition and biological potential of s. pecten-veneris L. Methods： Phytochemicals including alkaloids, fiavonoids, polyphenols, and tannins were determined in extracts of s. pecten-veneris. Antioxidant activity was determined using 2,2-diphenyl-1- picrylhydrazyl （DPPH）, while reducing power was tested by ferric reducing/antioxidant power （fRAP） assay. Antimi- crobial activity against seven bacterial and four fungal strains was evaluated using agar well diffusion assay. Enzymes inhibition study was performed for urease, phosphodiesterase-I, and catalase-II. Results： s. pecten-veneris showed moderate antiradical activity and reducing potential of hydroxyl radicals to about 20% of the initial value. The antiox- idant activity of various extracts of s. pecten-veneris showed a linear correlation with total phenolic contents in the order of water〉n-butanol〉chloroform〉ethyl acetate〉methanol extracts. s. pecten-veneris leaves showed the highest inhibitory activity against staphylococcus aureus while the highest antifungal activity was observed against Candida albicans. The plant extract was most potent against urease enzymes but showed moderate activity against phosphodiestrase-I and carbonic anhydrase-II. Conclusions： Our data demonstrate that in addition to its culinary uses, s. pecten-veneris has good medicinal potential and hence could be used for treating some specific health ailments.

关键词： scandix pecten-veneris L. Phytochemical composition Antioxidant activity Antimicrobial potential Enzyme inhibition

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