Research on Key Techniques of Functional Evaluation of Living Donor Liver Transplantation Based on CT Dataset

我国是肝癌高发病地区，晚期肝癌患者的治疗多采用肝移植手术。虽然目前我国肝脏移植的数量已经达到一定的规模，但执行肝移植手术仍然存在较大的风险。因此如果能在术前预现手术过程中可能遭遇的不规则病灶形态和重要管道结构，仿真模拟手术过程，以便事先制定必要的防范对策和措施，将有助于肝脏外科手术计划的制定。 作为虚拟肝脏手术计划系统的组成部分，本文主要是针对基于CT图像的肝脏肿瘤（病灶）形态建模，肝脏管道变异情况分析和肝移植术中供肝的切除效果模拟进行了研究。首先，实现基于DICOM格式的肝脏肿瘤CT图像分割和肿瘤的三维表面重建。其次，在重建肝内管道系统三维结构的基础上，判定各种肝脏管道的分支变异类型，分析...China is an area with high-disease of liver cancer, and living donor liver transplantation is a main method of curing advanced liver cancer. Although the amount of this kind of surgery in China has reached a large size, there is still rather high risk in the operation. It would be helpful for making necessary measures and hepatic surgery plans that if the irregular lesion shape and the important v...学位：工学硕士院系专业：信息科学与技术学院计算机科学系_计算机系统结构学号：2005130229

Measurement of Atmospheric Neutrino Oscillations with a High-Density Detector

We propose an experiment to test the hypothesis that the reported anomaly on atmospheric neutrino fluxes is due to nu_mu nu_x oscillations. It will rely both on a disappearance technique, exploiting the method of the dependence of the event rate on L/E, which was recently shown to be effective for detection of neutrino oscillation and measurement of the oscillation parameters, and on an appearance technique, looking for an excess of muon-less events at high energy produced by upward-going tau neutrinos. The detector will consist of iron planes interleaved by limited streamer tubes. The total mass will be about 30 kt. The possibility of recuperating most of the instrumentation from existing detectors allows to avoid R&D phases and to reduce construction time. In four years of data taking, this experiment will be sensitive to oscillations nu_mu nu_x with Delta m^2 > 10^-4 eV^2 and a mixing near to maximal, and answer the question whether nu_x is a sterile or a tau neutrino

New psychoactive substances: evolution in the exchange of information and innovative legal responses in the european union

At the end of 2019, the European Monitoring Centre for Drugs and Drug Addiction was monitoring around 790 new psychoactive substances, more than twice the total number of controlled substances under the United Nations Conventions. These substances, which are not subject to international drug controls, include a wide range of molecules, including the assortment of drugs such as synthetic cannabinoids, stimulants, opiates, and benzodiazepines. Most of them are sold as “legal” substitutes for illicit drugs, while others are intended for small groups willing to experiment with them in order to know their possible new effects. At the national level, various measures have been taken to control new substances and many European countries have responded with specific legislation in favor of consumer safety and by extending or adapting existing drug laws to incorporate the new psychoactive substances. Moreover, since 1997, an early warning system has been created in Europe for identifying and responding quickly to the risks of new psychoactive substances. In order to establish a quicker and more effective system to address the criminal activities associated with new dangerous psychoactive substances, the European legal framework has considerably changed over the years

Ultra-high energy cosmic ray investigations by means of EAS muon density measurements

A new approach to investigations of ultra-high energy cosmic rays based on the ground-level measurements of the spectra of local density of EAS muons at various zenith angles is considered. Basic features of the local muon density phenomenology are illustrated using a simple semi-analytical model. It is shown that muon density spectra are sensitive to the spectrum slope, primary composition, and to the features of hadronic interaction. New experimental data on muon bundles at zenith angles from 30 degrees to horizon obtained with the coordinate detector DECOR are compared with CORSIKA-based simulations. It is found that measurements of muon density spectra in inclined EAS give possibility to study characteristics of primary cosmic ray flux in a very wide energy range from 10^15 to 10^19 eV.Comment: 7 pages, 7 figures. Presented at CRIS-2006, Catania, Italy, May 29 - June 2, 2006. Accepted for publication in Nucl. Phys. B (Proc. Suppl.

Alcohol consumption and employment: a cross-sectional study of office workers and unemployed people

Background. Alcohol is a psychoactive substance with toxic and addictive properties. Biomarkers like GGT, AST, ALT and MCV are influenced by excessive ethanol consumption. Alcohol consumption represents a health risk and it has been linked to unemployment. The aim of this study how working status predict alcohol consumption through a cross sectional study comparing alcohol-related biomarkers levels in office workers and unemployed people. Methods. This study includes 157 office workers and 157 unemployed people, who were recruited from January to December 2018. A propensity score matching procedure was applied to obtain two homogenous groups in terms of age and gender. A non- parametric analysis was performed on serum biomarkers that are generally altered by alcohol consumption. Logistic regression models were designed to evaluate how working status predict abnormal biomarker levels related with alcohol consumption. Results. No differences in median biomarker values were found between groups. Lo- gistic regression analysis showed that office work is a negative predictor of pathological biomarker levels. Office workers had a significant relation with the levels of GGT (OR 0.48; 95% CI [0.28-0.84]), AST (OR 0.42; 95% CI [0.22-0.78]), ALT (OR 0.39; 95% CI [0.23-0.66]), and MCV (OR 0.37; 95% CI [0.19-0.70]). Conclusion. Office workers had lower absolute frequencies of pathological values of alcohol consumption biomarkers, after matching for age and gender compared with unemployed people. In addition, a significant negative association between office work is a negative predictor of biomarker levels of alcohol consumption. These results showed that work is an important determinant of health and that can represent a benefit for workers in terms of reducing the risk of consuming alcohol

THE "OLIVA ASCOLANA DEL PICENO DOP": PRODUCTION ASPECTS AND SELF-CONTROL PROGRAMS IN FACTORIES OF MARCHE REGION

The "Oliva Ascolana del Piceno" is a traditional product of the central part of Italy, which obtained the official designation of Denomination of Protected Origin (DOP) in 2006. This study analyzes the production aspects and the self-control programs in different tipologies of industries in Marche Region. The artisanal production is still used, but lately is growing up the industrial one. The industrial product shows an improvement of the healthy standards, but is not always able to ensure the preservation of the full taste and flavour. . The scrupulous respect of GMP and CCP in the handmade product can ensure, on the other hand, hight healthy standards and, at the same time, a better preservation of the organoleptic features

A new concept for streamer quenching in resistive plate chambers

In this paper we propose a new concept for streamer quenching in Resistive Plate Chambers (RPCs). In our approach, the multiplication process is quenched by the appropriate design of a mechanical structure inserted between the two resistive electrodes. We show that stable performance is achieved with binary gas mixtures based on argon and a small fraction of isobutane. Fluorocarbons, deemed responsible for the degradation of the electrode inner surface of RPC detectors, are thus fully eliminated from the gas mixture. This design {also resulted} in a simplified assembly procedure. Preliminary results obtained with a few prototypes of ``Mechanically Quenched RPCs'' and some prospects for future developments are discussed