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Elastic rescattering photoelectron distributions entering the relativistic regime

作者： (英)pat Norris

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Chinese Optics Letters 2015年第7期13卷 9-13页

作者： Sui S.Luo pat Grugan Siyu Luo Barry C.Walker Physics and Astronomy Department University of Delaware

We report photoelectron energy spectra and angular distributions for ionization with elastic scattering in ultra- strong laser fields. Noble gas species with Hartree-Fock scattering potentials show a reduction in elastic rescat- tering with the increasing energy of ultrastrong fields and when the Lorentz deflection of the photoelectron exceeds its wave function spread. The relativistic extension of a three-step recollision model is well-suited to the ultrastrong intensity regime （〉10^17 W/cm2） that lies between traditional strong fields and extreme relativistic interactions.

关键词： Elastic scattering Electric fields Laser scattering Magnetic fields Scattering Strong field physics

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Living religions

Low-Frequency Sensitivity to Gravitational Waves for SpaceInterferometers using Drag-free control based on Capacitive Sensing

2005年

作者： Mary pat Fisher

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Low-Frequency Sensitivity to Gravitational Waves for SpaceIn...

Primary hepatic carcinosarcoma

中国宇航学会深空探测技术专业委员会第二届学术会议

作者： Antonio Pulido patón Purple Mountain Observatory Chinese Academy of Sciences 210008

＜正＞During the last four decades drag-free control has become an increasingly important technology for missions aiming to test fundamental physics in space. ASTROD is a relativity mission concept encompassing multi-purposes. Within the main objectives of ASTROD are the measurement of the relativistic parameters （β,γ）, and the solar angular momentum （J2）. with high precision. Another ASTROD objective is the measurement of low frequency gravitational waves complementing the ESA/ NASA mission LISA in the study of strong field black hole physics. The interferometer mirrors utilized to measure path changes have to be kept in an as pure geodetic motion as possible and that will be achieved using drag-free control. A ten-fold improvement in acceleration noise with respect to LISA would allow ASTROD to test relativity to 1ppb. That means ASTROD would achieve an acceleration noise spectral density about 3× 10-16 ms-2Hz-1/2.

关键词： drag-free gravitational waves space detectors.

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Hepatobiliary & Pancreatic Diseases International 2011年第1期10卷 101-103页

作者： Mehmet elikbilek Kemal Deniz Edip Torun Tarιk Artιs Ersin zaslan kkes brahim Karahan Tahir Ercan patιroglu mer zbakιr Department of Gastroenterology Erciyes UniversityMedical School Department of pathology Erciyes UniversityMedical School Department of Surgery Erciyes UniversityMedical School Department of Internal Medicine Erciyes UniversityMedical School

BACKGROUND:Primary hepatic carcinosarcoma is a rare malignant tumor containing an intimate mixture of carci- nomatous and sarcomatous *** on risk factors, epidemiology,and pathogenesis of the tumor as well as the experience in its treatment are limited. METHOD:We present a case of primary carcinosarcoma of the liver in a 69-year-old man who complained of right hypochondrial pain and weight loss for two months. RESULTS:Magnetic resonance imaging revealed a 14×12 cm mass in segments 7-8 and 4 of the liver with vena hepatica *** ultrasonography-guided biopsy showed osteoid tissue without osteoblastic *** structures accompanied the osteoid *** patient underwent surgery after a diagnosis of *** frozen sections revealed a carcinosarcoma associated with an osteosarcoma and cholangiocellular carcinoma components. CONCLUSIONS:Preoperative diagnosis of this rare primary hepatic malignant tumor may be difficult by biopsy owing to intratumoral *** mature areas of the osteosarcomatous component may lead to misdiagnosis of metaplastic bone *** features of this rare entity are discussed.

关键词： carcinosarcoma liver neoplasms osteosarcoma cholangiocarcinoma

Family responsibility dynamics for young adults in transition to adult health care

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Journal of Diabetes Mellitus 2013年第3期3卷 139-144页

作者： pat Rapley Gwen Babel Joey Kaye Suzanne Brown Adjunct Senior Lecturer Curtin University and Centre for Nursing Research Sir Charles Gairdner Hospital Perth Australia Department of Endocrinology and Diabetes Sir Charles Gairdner Hospital Perth Australia

Aim: To explore family responsibility dynamics, metabolic control, clinic attendance, and emergency admissions when young adults (YA) with type 1 diabetes transition to an adult hospital. Method: A longitudinal mixed method design with two study groups (parents, n = 28;YA intervention group, n = 23) and a YA comparison group (n = 20). Sample recruited from an outpatient diabetes centre. Demographic, clinic attendance, emergency admissions, biodata, and the Diabetes Family Responsibility Questionnaire (DFRQ) were completed on entry and sixmonths later as part of an 18-month trial of a diabetes transition coordinator (DTC). The selfreport DFRQ were analyzed using derived parent-child dyadic variables to explore differences at baseline and end of study using Wilcoxon Signed Rank Test. The relationship between metabolic control and the DFRQ patterns was explored using Spearman’s rho. Results: On completion of the study, the change in HBA1Cfor both adolescent groups was not significant but was less than ideal for 25% of adolescents in the study. The YA intervention group had significantly fewer missed appointments between them compared to the comparison group. The DFRQ indicated that the derived parent-child dyadic variable of task-discordance increased during the study. Conclusion: The clinically relevant diabetes-task dissonance between parents and young adults offers a challenge and a diagnostic opportunity for diabetes educators.

关键词： Diabetes Health-Care Transition Parent Adolescent Transition Coordinator

Health and Environmental Impacts of Smoke from Vegetation Fires: A Review

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Journal of Environmental Protection 2016年第12期7卷 1860-1885页

作者： Zifei Liu James pat Murphy Ronaldo Maghirang Daniel Devlin Department of Biological & Agricultural Engineering Kansas State University Manhattan KS USA Department of Agronomy Kansas State University Manhattan KS USA

Smoke exposure is often an inevitable side effect of open vegetation fires (both planned and wild) and is an important public health concern. The objective of this paper is to summarize state-of-the-art knowledge on health and environmental impacts of smoke from vegetation fires, to identify research gaps, and to provide needed information to researchers, land managers, policymakers, health care workers, and the general public. The main components of vegetation fire smoke and their characterizations are identified and evaluated. Concentrations, emission ratios, and emission factors of smoke components and the combined health and environmental effects of all hazardous smoke components from vegetation fire smoke exposure are summarized. Trends in risk assessment of vegetation fire smoke, limitations of current research, and future research needs are discussed.

关键词： Emission Exposure Epidemiology Prescribed Burning Particulate Matter Air Pollution

Healthcare-transition risk assessment for emerging adults with diabetes type 1

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Journal of Diabetes Mellitus 2013年第2期3卷 62-70页

作者： Joey Kaye pat Rapley Gwen Babel Suzanne Brown Adjunct Senior Lecturer Curtin University Centre for Nursing Research Innovation and Quality Sir Charles Gairdner Hospital Perth Western Australia Department of Endocrinology and Diabetes Sir Charles Gairdner Hospital Perth Western Australia

AIM: To identify potential risk indicators for emerging adults transitioning to adult health care. BACKGROUND: Without maturity, independence, knowledge and motivation to manage their diabetes and successfully transition to adult healthcare, a proportion of emerging adults will struggle, leaving themselves vulnerable to diabetes-related complications. METHODS: Fifty-three emerging adults (aged 17 - 19 years) recently transitioned from pediatric to adult healthcare were recruited. Data included demographic, glycated haemoglobin, Body Mass Index, base-line and 12-month data from four psychosocial measures: Problem Areas in Diabetes, Diabetes Empowerment Scale, Hospital Anxiety and Depression Scale and dichotomous questions from the Eating Attitude Test. Missed appointments were obtained from hospital records. RESULTS: No significant differences in age, gender, BMI and individual survey scales between three appointment groups. Median HbA1c in the Sat-1 group was 7% (53 mmol/mol), compared with 8.6% (70 mmol/mol) and 8.5% (69 mmol/mol) respectively in the Sat-2 and Unsatisfactory groups. A ROC curve analysis and classification tree analysis identified optimal threshold values for the survey scales and their linear combinations. These values were used to make comparisons across two appointment and three HbA1c status groups. The unsatisfactory appointment group was characterised by statistically higher proportions of participants with (1) a low score for empowerment alone or in combination (less) with perceived problems and (2) statistically higher perceived problems and anxiety scores. CONCLUSIONS: Findings suggest that diabetes self-care confidence, less perception of diabetes as a problem, could be a useful indicator of future appointment attendance. Similarly, depression levels could be a useful predictor of better metabolic control following transition. RELEVANCE TO CLINICAL PRACTICE: This study offers an innovative use of existing metrics to identify at-risk emergin

关键词： Diabetes Healthcare Transition Emerging Adults Risk Assessment

Prophylaxis with ketotifen in rats with portal hypertension:involvement of mast cell and eicosanoids

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Hepatobiliary & Pancreatic Diseases International 2008年第4期7卷 383-394页

作者： Fernando Sánchez-patán Raquel Anchuelo Elena Vara Cruz García Yolanoa Saavedra patri Vergara Carmen Cuellar Marta Rodero Maria-Angeles Aller Jaime Arias Department of Surgery I School of Medicine Complutense University of MadridSpain Department of Biochemistry and Molecular Biology School of Medicine Complutense University of MadridSpain Department of Physiology Autonoma University of BarcelonaSpain Department of Parasithology School of PharmacyComplutense University of MadridSpain

BACKGROUND:Since we have previously shown an increase of mast cells in the small bowel and in the mesenteric lymph nodes in the rats with prehepatic portal hypertension,it can be hypothesized that this essential inflammatory cell would be involved in the pathogeny of the splanchnic changes related to portal hypertension. METHODS:To verify this hypothesis,we first studied mast cell infiltration in the ileum and in the mesenteric lymph nodes in sham-operated male Wistar rats(n=12) and in short-term prehepatic portal hypertensive rats (n=12),and the serum levels of rat mast cell protease Ⅱ(RMCP-Ⅱ)by *** a second set of experiments ketotifen,a mast cell stabilizer drug,was administered to sham-operated(n=10)and portal hypertensive(n=12) rats 24 hours before the intervention and prostanoids (PGE2,PGI2,TXB2)and leukotrienes(LTC4,LTB4)were assayed by RIA,mast cell infiltration in the ileum and in the mesenteric lymph nodes and the serum levels of RMCP-Ⅱwere also studied,to show its effectiveness to prevent the mesenteric alterations produced by the inflammatory mediators released by the mast cell. RESULTS:Forty-eight hours after the intervention RMCP-Ⅱ (P<0.05),PGE2(P<0.001)and LTC4 serum levels decreased and mast cell number and RMCP-Ⅱlevels increased in mesenteric lymph nodes in portal hypertensive *** administration of ketotifen reduced portal pressure(P<0.001),serum levels of PGE2(P<0.001)and RMCP-Ⅱ(P<0.001)in mesenteric lymph nodes. CONCLUSIONS:In acute portal hypertension in the rat,the mast cell translocation from intestinal mucosa to mesenteric lymph nodes,where they are activated and degranulates,would represent a defence mechanism to avoid the activation of an acute and massive inflammatory response in this *** administration of ketotifen is able to reduce the splanchnic inflammatory changes related to acute portal hypertension in the rat.

关键词： portal hypertension prostaglandins leukotrienes mast cell

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基于线性规划的碰撞检测算法研究

计算机工程与应用 2003年第29期39卷 105-107,145页

作者：周新建 Ali Akgunduz pat Banerjee 华东交通大学机电工程学院南昌330013 美国伊利偌依大学芝加哥分校虚拟现实研究所

介绍了虚拟环境中一种基于凸多面体面信息对偶线性规划模型(DualModel)的快速旋转和移动物体之间干涉碰撞实时检测方法。该文详细介绍了建模过程和求解步骤,物体由构成凸多面体的三角形面信息表示,而物体的运动由一组虚拟现实环境中的... 详细信息

介绍了虚拟环境中一种基于凸多面体面信息对偶线性规划模型(DualModel)的快速旋转和移动物体之间干涉碰撞实时检测方法。该文详细介绍了建模过程和求解步骤,物体由构成凸多面体的三角形面信息表示,而物体的运动由一组虚拟现实环境中的全局移动和旋转矩阵表示。这种数学编程方法具有数据结构简单、算法可靠和速度快等优点,同时能够很好地解决高速(运动帧)碰撞的问题。这一方法通过使用主-对偶(primal-dual)内点方法来解线性规划方程,具有很好的效果,能够检测多物体对之间的碰撞。实验结果表明,基于数学编程的方法相对两种著名的工具包I-COLLIDE和SOLID,具有速度快和稳定可靠的优点,而I-COLLIDE和SOLID工具包基于两种著名的算法:LinCanny(LC)最近特征算法和GJK算法(EnhancedGilbertJohnsonandKeethialgorithm)。

关键词：虚拟现实碰撞检测对偶模型线性规划