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Prospective study of transsphenoidal pituitary surgery： is tumor volume a predictor for the residual tumor？

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Chinese Medical Journal 2012年第14期125卷 2444-2448页

作者： Resha Shrestha QI Lei BAO Gang WANG Mao-de department of Neurosurgery First Affiliated Hospital of MedicalSchool Xi'an Jiaotong University Xi'an Shaanxi 710061 China

Background The presence of residual tumor after surgery for pituitary adenoma may necessitate further treatment. The suprasellar and parasellar extension of the tumor have been widely considered as the predictors for residual tumor. However there is scarcity of studies regarding the preoperative tumor volume and residual tumor. This study was conducted to evaluate if tumor volume could predict the outcome of transsphenoidal pituitary surgery. Methods A prospective study was designed and 48 patients who underwent transsphenoidal pituitary surgery within 1 year in the First Affiliated Hospital of Xi＇an Jiaotong University were included in this study. The preoperative tumor volume and immediate postoperative tumor volume （within 4-7 days） were calculated in the contrast magnetic resonance imaging by using the formula of ellipsoid. All these volumes were divided into three subgroups, i.e. group 1, group 2 and group 3 with preoperative volume of less than 4 cm3, 4-8 cm3, and more than 8 cm3 respectively. The parasellar and suprasellar extension of the tumor were also classified by Knosp and modified Hardy＇s classifications. Results Baseline characteristics were comparable. The preoperative tumor volume of more than 8 cm3 （group 3, （12.1±1.1） cm3） had increased risk on postoperative tumor residue （P 〈0.01） than the other two groups （（2.1±0.3） cm3 and （6.1±0.3） cm3 in groups 1 and 2）. The mean postoperative volume in group 3 patients （（2.2±0.1） cm3） was significantly higher than the other two groups （P 〈0.01）. Conclusion Preoperative volume of more than 8 cm3 can be considered as a predictor for postoperative residual volume.

关键词： pituitary neoplasms, transsphenoidal approach, tumor volume, residual volume predictor

New environmental factors related to diabetes risk in humans:Emerging bisphenols used in synthesis of plastics

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World Journal of Diabetes 2023年第8期14卷 1301-1313页

作者： Rafael Moreno-Gómez-Toledano María.delgado-Marín Alberto Cook-Calvete Claudia González-Cucharero Nunzio Alcharani Beatriz Jiménez-Guirado Ignacio hernandez Rafael Ramirez-Carracedo Laura Tesoro Laura Botana Sandra Sánchez-Esteban Javier Diez-Mata Jose Luis Zamorano Ricardo J.Bosch Carlos Zaragoza Marta Saura Universidad de Alcalá Department of Biological Systems/PhysiologyAlcaláde Henares 28871Spain Cardiology department University Hospital Ramón y CajalMadrid 28034Spain Laboratory of Cardiovascular Pathophysiology Joint Translational Research UnitUniversity Francisco de Vitoria School of MedicineMadrid 28034Spain Instituto Ramón y Cajal de Investigación Sanitaria-IRYCIS Madrid 28034Spain

BACKGROUND Diabetes mellitus(DM)is one of the largest global health emergencies of the 21st *** recent years,its connection with environmental pollutants,such as bisphenol A(BPA),has been demonstrated;consequently,new structurally similar molecules are used to replace BPA in the plastics industry(BPS,BPF and BPAF).AIM To carry out a systematic review to allow coherent evaluation of the state of the ***,a meta-analysis was performed to unify the existing quantitative *** Firstly,a systematic review was carried out,using the terms“(bisphenol)AND(Diabetes OR Hyperglycemia)”,to maximize the number of ***,three authors analyzed the set of ***,a meta-analysis was performed for each BP,using RevMan *** addition,funnel plots were developed to study publication *** The systematic analysis of the literature revealed 13 recent articles(2017–2023)related to the study *** qualitative analysis showed interesting data linking diabetes to the three most widely used substitute BPs in the industry:BPS,BPF and ***,the meta-analysis determined a positive relationship with BPS,BPF and BPAF,which was only statistically significant with *** There is a need to apply the precautionary principle,regulating the use of new ***,replacing BPA with BPS,BPF or BPAF is unlikely to protect the population from potential health risks,such as DM.

关键词： Bisphenol S Bisphenol F Bisphenol AF Diabetes mellitus Systematic review Meta-analysis

AdS/QCD and light front holography: A new approximation to QCD

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Chinese Physics C 2010年第9期34卷 1229-1235页

作者： Stanley J.Brodsky Guy F.de Téramond SLAC National Accelerator Laboratory Stanford University Universidad de Costa Rica

The combination of Anti-de Sitter space （AdS） methods with light-front holography leads to a semi-classical first approximation to the spectrum and wavefunctions of meson and baryon light-quark bound *** from the bound-state Hamiltonian equation of motion in QCD,we derive relativistic lightfront wave equations in terms of an invariant impact variable ζ which measures the separation of the quark and gluonic constituents within the hadron at equal light-front *** equations of motion in physical space-time are equivalent to the equations of motion which describe the propagation of spin-J modes in anti–de Sitter （AdS） *** eigenvalues give the hadronic spectrum,and its eigenmodes represent the probability distributions of the hadronic constituents at a given *** to the light meson and baryon spectra are *** predicted meson spectrum has a string-theory Regge form M^ 2 = 4κ ^2 （n＋L＋S/2）;i.e.,the square of the eigenmass is linear in both L and n,where n counts the number of nodes of the wavefunction in the radial variable ζ.The space-like pion and nucleon form factors are also well *** thus obtains a remarkable connection between the description of hadronic modes in AdS space and the Hamiltonian formulation of QCD in physical space-time quantized on the light-front at fixed light-front time τ.The model can be systematically improved by using its complete orthonormal solutions to diagonalize the full QCD lightfront Hamiltonian or by applying the Lippmann-Schwinger method in order to systematically include the QCD interaction terms.

关键词： gauge/gravity correspondence light-front dynamics strongly coupled QCD meson and baryon spectrum meson and nucleon form factors

Histological and magnetic resonance imaging assessment of Liqoseal in a spinal in vivo pig model

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Animal Models and Experimental Medicine 2023年第1期6卷 74-80页

作者： Emma M.H.Slot Wilhelmina Bergmann Ahmet Kinaci Bart de Boer Nizar Moayeri Saskia Redegeld Sa.der van Thoor Tristan P.C.van Doormaal department of Neurology and Neurosurgery University Medical Center UtrechtUtrechtthe Netherlands department of Translational Neuroscience Brain CenterUniversity Medical Center UtrechtUtrechtthe Netherlands department of Biomolecular Health Sciences Division of PathologyFaculty of Veterinary MedicineUtrecht UniversityUtrechtthe Netherlands department of Neurosurgery Elizabeth TweeSteden ziekenhuisTilburgthe Netherlands Brain Technology Institute Utrechtthe Netherlands department of Neurosurgery Clinical Neuroscience CenterUniversity Hospital ZurichZurichSwitzerland

Background:Liqoseal (Polyganics,B.V.) is a dural sealant patch for preventing postoperative cerebrospinal fluid (CSF) *** has been extensively tested preclinically and CE (Conformite Européenne) approved for human use after a first cranial in-human ***,the safety of Liqoseal for spinal application is still *** aim of this study was to assess the safety of spinal Liqoseal application compared with cranial application using histology and magnetic resonance imaging ***:Eight female Dutch Landrace pigs underwent laminectomy,durotomy with standard suturing and Liqoseal *** control animals underwent the same procedure without sealant *** histological characteristics and imaging characteristics of animals with similar survival times were compared to data from a previous cranial porcine ***:Similar foreign body reactions were observed in spinal and cranial *** foreign body reaction consisted of neutrophils and reactive fibroblasts in the first3 days,changing to a chronic granulomatous inflammatory reaction with an increasing number of macrophages and lymphocytes and the formation of a fibroblast layer on the dura by day *** Liqoseal plus dura thickness reached a maximum of 1.2mm(range 0.7-2.0mm) at day ***:The spinal dural histological reaction to Liqoseal during the first 7days was similar to the cranial dural *** did not swell significantly in both application areas over *** the current lack of a safe and effective dural sealant for spinal application,we propose that an in-human safety study of Liqoseal is the logical next step.

关键词： reaction resonance magnetic

Confirmatory factor analysis of VISA-P scale and measurement invariance across sexes in athletes with patellar tendinopathy

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Journal of Sport and Health Science 2017年第3期6卷 365-371页

作者： Sergio hernandez-Sanchez Ferran Abat María D.Hidalgo Antonio I.Cuesta-Vargas Victor Segarra Jose M.Sanchez-Ibanez Antonia Gomez-Conesa department of Pathology and Surgery Physiotherapy AreaMiguel Hernandez UniversityValencia 03550Spain Sports Orthopaedic Surgeon ReSport ClinicBarcelona 08017Spain department of Basic Psychology and Methodology University of MurciaMurcia 30100Spain department of Physiotherapy Faculty of Health SciencesUniversity of MalagaMalaga 29009Spain

Background:The Victorian Institute of Sport Assessment–Patella(VISA-P) scale is the most condition-specific patient-reported outcome measure used to assess symptom severity in athletes with patellar *** exploratory factor analyses have been conducted to evaluate the scale's dimensionality,with inconsistent results,and the factor structure of the scale remains *** aims of the present study were to determine the factorial structure of the VISA-P scale using confirmatory factor analysis(CFA) and test measurement invariance across ***:The study included a convenience sample of 249 Spanish athletes with patellar *** was performed to assess factorial *** 1-and 2-factor models were *** invariance across sexes was evaluated via multi-group CFA with several fit indices using EQS 6.1 ***:The internal consistency coefficient was *** CFA models were examined and the 1-factor model in which errors for Items 7 and8 were correlated showed acceptable fit in terms of comparative fit index(CFI) and goodness-of-fit index(GFI) statistics(CFI = 0.93;GFI = 0.94;standardized root mean square residual = 0.06;root mean square error of approximation = 0.10;90% confidence interval:0.08–0.13).This model was invariant across ***:The 1-factor model of the Spanish version of the VISA-P scale(VISA-P-Sp) in which errors for Items 7 and 8 were correlated demonstrated relative fit in *** obtained via VISA-P-Sp can be compared between men and women without sexes *** studies should examine the VISA-P scale and other single-score patient-reported outcome measures concurrently.

关键词：跳线开关膝测量不变性报导病人的结果措施结构的有效性

Vibration Response and Stress Analysis of Planar Elastic Tube Bundle Induced by Fluid Flow

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Chinese Journal of Mechanical Engineering 2018年第2期31卷 89-96页

作者： de-Rong Duan Pei-Qi Ge Wen-Bo Bi Yan-Ying Dong School of Mechanical Engineering Shandong University Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education Shandong University

Flow?induced vibration plays a positive role on heat transfer enhancement. Meanwhile, it is also a negative factor for fatigue strength. Satisfying the fatigue strength is the primary prerequisite for heat transfer enhancement. This paper numerically studied the flow?induced vibration of planar elastic tube bundle based on a two?way fluid–structure interaction(FSI) calculation. The numerical calculation involved the unsteady, three?dimensional incompressible governing equations solved with finite volume approach and the dynamic balance equation of planar elastic tube bundle solved with finite element method combined with dynamic mesh scheme. The numerical approach was verified by comparing with the published experimental results. Then the vibration trajectory, deformation and stress contour of planar elastic tube bundle were all studied. Results show that the combined movement of planar elastic tube bundle represents the agitation from inside to outside. The vibration of out?of?plane is the main vibration form with the typically sinusoidal behavior because the magnitude of displacement along the out?of?plane direction is the 100 times than the value of in?plane direction. The dangerous point locates in the innermost tube where the equivalent stress can be utilized to study the multiaxial fatigue of planar elastic tube bundle due to the alternating stress concentration. In the velocity range of 0.2-3 m/s, it is inferred that the vibration amplitude plays a role on the stress response and the stress amplitude is susceptible to the fluid velocity. This research paves a way for studying the fatigue strength of planar elastic tube bundle by flow?induced vibration.

关键词： Flow?induced vibration Planar elastic tube bundle Vibration response Stress analysis

A HIERARCHICAL MULTIPLE CRITERIA MOdeL FOR ELICITING RELATIVE PREFERENCES IN CONFLICT SITUATIONS

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Journal of Systems Science and Systems Engineering 2012年第1期21卷 56-76页

作者： Ginger Y. KE Bing FU Mitali de Keith W. HIPEL department of Management Sciences University of Waterloo Waterloo Canada N2G 3G1 department of Systems design Engineering University of Waterloo Waterloo Canada N2G 3G1 department of Business Wilfrid Laurier University Waterloo Canada N2L 3C5

A multiple criteria.decision analysis （MCDA） approach is designed for capturing the relative preference information of a.decision maker involved in ＇a conflict. More specifically, an MCDA approach based on the outranking method, ELECTRE III, is employed for ranking states or possible scenarios in the conflict from most to least preferred, where ties are allowed, for a.decision maker according to his or her value system. To demonstrate how this preference elicitation methodology can be conveniently implemented in practice within the framework of the Graph Model for Conflict Resolution, it is applied to a real world water supply crisis which occurred in the town of North Battleford, located in the Canadian province of Saskatchewan.

关键词： Multiple criteria.decision analysis graph model for conflict resolution ELECTRE III fuzzy preferences

Visual observations of 1998 Leonids in delingha and their preliminary analysis

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Chinese Science Bulletin 2000年第23期45卷 2142-2147页

作者： M.C.de Lignie M.Langbroek Dutch Meteor Society Jan Steenlaan 46NL-2251Jh Voorschotenthe NetherlandsDutch Meteor SocietyJan Steenlaan 46NL-2251Jh Voorschotenthe Netherlands

On the basis of the observational data obtained by the Sino-Dutch Joint Leonids Observation Team at delingha Station of Purple Mountain Observatory from Nov. 13 to 18, 1998, and those obtained in other places of China during the same period, the distribution characteristics of the 1998 Leonids are analyzed and a three-layer structure of the meteoric shower encountered by the Earth is proposed.

关键词： Leonids ZHR mass distribution.

Does labor off-farm employment inevitably lead to land rent out?Evidence from China

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Journal of Mountain Science 2019年第3期16卷 689-700页

作者： deNG Xin XU Ding-de ZENG Miao QI Yan-bin College of Economics Sichuan Agricultural University Sichuan Center for Rural development Research College of ManagementSichuan Agricultural University School of Economics Sichuan University

The focus of land economics is on how to decrease the misallocation of resources to achieve an optimal allocation of resources. Both the theories of new economics of labor migration(NELM) and the conclusions of empirical studies reveal that land resources will inevitably be reallocated(e.g., rented out) if the resources of family labor are reallocated(e.g., off-farm employment). However, this study reveals that off-farm employment does not inevitably lead to land rent out. More precisely, this study uses survey data on 8031 peasant households from 27 provinces in China and explores the relationship between off-farm employment and land rent out by describing spatial features and through empirical analysis(e.g., IV-Probit model and IV-Tobit model). The results show the following: 1) There is an indirect relationship between off-farm employment and land rent out regarding spatial area aggregation, i.e., regions with a higher ratio of off-farm employment also have a lower area of land rent out. 2) Off-farm employment is significantly positively correlated with the behavior of land rent out, but its square is significantly negatively correlated with the behavior, i.e., there is an inverted U-shaped relationship between off-farm employment and the behavior of land rent out, with the turning point being 55.55% offfarm employment. 3) Off-farm employment is significantly positively correlated with the area of land rent out, but its square is significantly negatively correlated with the area, i.e., there is an inverted Ushaped relationship between off-farm employment and the area of land rent out, with the turning point being 56.22% off-farm employment. This study helps explain why China has a high ratio of off-farm employment but a lower rate of land rent out.

关键词： Rural labor Off-farm employment Land rent out Rent out area China