Portal vein arterialization in 25 liver transplant recipients:A Latin American single-center experience

BACKGROUND Portal vein arterialization(PVA)has been used in liver transplantation(LT)to maximize oxygen delivery when arterial circulation is compromised or has been used as an alternative reperfusion technique for complex portal vein thrombosis(PVT).The effect of PVA on portal perfusion and primary graft dysfunction(PGD)has not been assessed.All patients receiving PVA and LT at the Fundacion Santa Fe de Bogota between 2011 and 2022 were analyzed.To account for the time-sensitive effects of graft perfusion,patients were classified into two groups:prereperfusion(pre-PVA),if the arterioportal anastomosis was performed before graft revascularization,and postreperfusion(post-PVA),if PVA was performed afterward.The pre-PVA rationale contemplated poor portal hemodynamics,severe vascular steal,or PVT.Post-PVA was considered if graft hypoperfusion became evident.Conservative interventions were attempted before PVA.

Study of Denoising in the Electricity Anti-Stealing Detection Based on VMD-WTD Combination

In order to solve the failure of electricity anti-stealing detection device triggered by the noise mixed in high-frequency electricity stealing signals,a denoising method based on variational mode decomposition(VMD)and wavelet threshold denoising(WTD)was applied to extract the effective high-frequency electricity stealing signals.First,the signal polluted by noise was pre-decomposed using the VMD algorithm,the instantaneous frequency means of each pre-decomposed components was analyzed,so as to determine the optimal K value.The optimal K value was used to decompose the polluted signal into K intrinsic mode components,and the sensitive mode components were determined through the cross-correlation function.Next,each sensitive mode was reconstructed.Finally,the reconstructed signal denoised using the wavelet threshold to obtain the denoised signal.The simulation analysis and experimental results show that the proposed method is superior to the traditional VMD method,FFT method and EMD method,as it can effectively eliminate the noise and enhance the reliability of high-frequency electricity stealing signal detection.

FMSA:a meta-learning framework-based fast model stealing attack technique against intelligent network intrusion detection systems

Intrusion detection systems are increasingly using machine learning.While machine learning has shown excellent performance in identifying malicious traffic,it may increase the risk of privacy leakage.This paper focuses on imple-menting a model stealing attack on intrusion detection systems.Existing model stealing attacks are hard to imple-ment in practical network environments,as they either need private data of the victim dataset or frequent access to the victim model.In this paper,we propose a novel solution called Fast Model Stealing Attack(FMSA)to address the problem in the field of model stealing attacks.We also highlight the risks of using ML-NIDS in network security.First,meta-learning frameworks are introduced into the model stealing algorithm to clone the victim model in a black-box state.Then,the number of accesses to the target model is used as an optimization term,resulting in minimal queries to achieve model stealing.Finally,adversarial training is used to simulate the data distribution of the target model and achieve the recovery of privacy data.Through experiments on multiple public datasets,compared to existing state-of-the-art algorithms,FMSA reduces the number of accesses to the target model and improves the accuracy of the clone model on the test dataset to 88.9%and the similarity with the target model to 90.1%.We can demonstrate the successful execution of model stealing attacks on the ML-NIDS system even with protective measures in place to limit the number of anomalous queries.

before从句的理解和翻译

作连词用的before,其基本含义是“在……之前”(earlier than the time when),但译成汉语时可作不同处理。1.常常译作“在……之前”。例如:You are expected to sitting on your seatbefore the play begins.请在话剧开演之前在自己的座位上坐好。2.在A before B的句式中,A表示时间,B表示行动,如果硬译为“A发生在B之前”,不合汉语习惯,译成“A之后才发生B”就比较得体。例如:

构式语法框架下英汉Steal和“偷”的对比分析

本文首先分析英汉steal和“偷”的语义、语法特征和搭配方面的要求,发现这两个词在这些方面有许多相似点,存在不少差异。其次分析它们形成的构式:双及物构式、及物构式和不及物构式。它们的双及物构式的构式义不同,及物构式和不及物构式的构式义相同。双及物构式是原始构式,其他两种构式由于受到语用压制和突显压制从双及物构式演变过来。及物构式和不及物构式会对进入构式的双及物动词的论元结构产生压制,迫使其减少其后的一个论元或删除其后的两个论元。

科学家更喜欢研究外表可爱的动物（英文）

The koala^1 is a cutie,but does it steal^2 too much of the limelight^3？A new study adds quantitative detail to an ongoing debate over whether such＂conservation mascots^4＂receive publicity and funding to the detriment of^5 animals typically deemed less attractive.

Steal one's thunder,偷了某人的雷声?

steal one’s thunder乍看不太合乎逻辑,thunder(雷声)怎么能会被steal(偷)呢?其实这是一条英国的成语。它的历史十分悠久。现在这条成语在英国及美国使用得都很普遍。它表达的含义为:spoil one’s attempt to impress byanticipating him,detracting from what he is say-ing,doing,etc.汉语就是“趁人不备,捷足先登,抢在某人之前或贬低某人的言行使之不受他人注意”。

New strategies for prevention and treatment of splenic artery steal syndrome after liver transplantation

AIM: To explore a prophylactic procedure to prevent splenic artery steal syndrome (SASS), as well as a therapeutic intervention to correct it.

表现为无脉症的双侧锁骨下动脉狭窄一例

轻度的锁骨下动脉狭窄（subclavian artery stenosis,SAS）一般无明显的临床症状,病变发展严重可能导致锁骨下动脉盗血综合征（subclavian steal syndrome,SSS）,即一侧锁骨下动脉或无名动脉在其近心端发生椎动脉前狭窄或完全闭塞时,患侧椎动脉逆流至锁骨下动脉远心端,从而引起椎—基底动脉供血不足的症候群。临床上多表现为头晕、耳鸣等,

A rare case of non-ST-segment elevation myocardial infarction triggered by coronary subclavian steal syndrome

Coronary subclavian steal syndrome (CSSS) has been recognized lately as an unusual clinical entity,giving rise to angina but rarely causing an acute coronary syndrome (ACS). The prerequisites for the appearance of CSSS are both a patent left internal mammary artery (LIMA) graft and severe stenosis of the left subclavian artery (LSA). However,LSA is often overlooked in the diagnostic evaluation of patients with angina,who have underwent coronary artery bypass grafting (CABG). We report an unusual case of non-ST-segment elevation myocardial infarction (NSTEMI) caused by subtotal occlusion of proximal LSA.

Rare presentation of intralobar pulmonary sequestration associated with repeated episodes of ventricular tachycardia

Arterial supply of an intralobar pulmonary sequestration(IPS) from the coronary circulation is extremely rare. A significant coronary steal does not occur because of dual or triple sources of blood supply to sequestrated lung tissue. We present a 60-year-old woman who presented to us with repeated episodes of monomorphic ventricular tachycardia(VT) in last 3 mo. Radio frequency ablation was ineffective. On evaluation, she had right lower lobe IPS with dual arterial blood supply, i.e., right pulmonary artery and the systemic arterial supply from the right coronary artery(RCA). Stress myocardial perfusion scan revealed significant inducible ischemia in the RCA territory. Coronary angiogram revealed critical stenosis of proximal RCA just after the origin of the systemic artery supplying IPS. The critical stenosis in the RCA was stented. At 12 mo follow-up, she had no further episodes of VT or angina.

Interventional treatment of the left subclavian in 2 patients with coronary steal syndrome

In patients with history of coronary artery disease angina pectoris is usually attributed to the progression of atherosclerotic lesions. However,in patients with previous coronary artery bypass graft operation(CABG) using internal mammary artery grafts,great vessel disease should also be considered. Herein we present two patients with history of CABG whose symptoms were suspicious for coronary ischemia. During cardiac catheterization reverse blood flow was observed from the left artery disease to the left internal mammary artery(LIMA) graft in both cases. After angioplasty and stent implantation of the left subclavian artery antegrade flow was restored in the LIMA grafts and both patients had complete resolution of symptoms.

利用课外报刊,让初中英语教学更精彩

阅读是人们进行社会文化交流的一个重要形式,也是人们获取各种信息的重要途径。在初中英语教学阶段,教师不仅要使学生拥有对进行英语基础运用的能力,还要为学生以后的英语学习奠定基础。英语课外报刊内容丰富,知识涉及面广,可以作为初中英语学习的补充材料,有助于学生英语的学习,使初中英语教学更加精彩。1.培养学生良好的阅读习惯许多学生一遇到陌生的词汇,不懂的词组就立刻去查字典,找出具体的意思。

MODELLING OF MICROSTRUCTURE EVOLUTION ANDPROPERTIES OF LOW-CARBON STEELS

The microstructure evolution has been investigated for hot rolling of advanced low carbon steels containing Nb, Ti, V and Cu. The critical processing step to develop the properties of hot rolled steels is cooling after rolling when the austenite-to-ferrite transformation as well as precipitation takes place thereby determining the final mi- crostructure. Thus, the modelling work emphasizes the kinetics of errite formation. Ferrite growth rates can adequately be described by taking into account a solute-drag- like effect of Mn and Nb. The emphasis of the model is to predict the phase transfor- mation kinetics for the industrial practice of accelerated cooling. The ferrite grain size is essentially determined at the early stages of transformation and can be correlated to the trunsformation start temperature. Pcarbides and nitrides of Nb, Ti and V is controlled by Ostwald ripening of these particles. The ageing behaviour can then be described based on the Shercliff-Ashby model for precipitation hardening. The situa- tion is more complex for Cu precipitation where the ageing response is also related to a sequence of different precipitation types.

STUDY ON SUB-DRY CUTTING GCr12

Through the comparison study on cutting force, cutting temperature andmachined surface quality with the sub-dry cutting traditional cooling method, it is shown thatsub-dry cutting can retard the wear of the tooled parts. It is beneficial to realize the productionwithout pollution and meet the demand of clean environment.

Bilateral common carotid artery common trunk with aberrant right subclavian artery combined with right subclavian steal syndrome: A case report

BACKGROUND We report a rare case of numbness in the right hand,finally diagnosed as bilateral common carotid artery common trunk with aberrant right subclavian artery combined with right subclavian steal syndrome and explain the cause of these diseases.CASE SUMMARY The patient was a 65-year-old woman.She complained of dizziness,numbness and weakness of the right hand for 6 mo.She was diagnosed with bilateral common carotid artery common trunk with aberrant right subclavian artery combined with right subclavian steal syndrome by ultrasound,enhanced computed tomography,computed tomography angiography and other examinations.Considering the surgical risks,the patient refused the aberrant right subclavian artery stent implantation and was discharged.We hypothesize that these two kinds of deformity and right subclavian steal syndrome may not occur by accident and result from multiple malformations.CONCLUSION Bilateral common carotid artery common trunk with aberrant right subclavian artery combined with right subclavian steal syndrome is rare.This case reminds interventional radiologists of the possibility of these abnormalities before surgery.

EXPERIMENTAL-NUMERICAL AND MICROSTRUCTURAL CONTROL OF HOT STRIP ROLLING

On a local level, thermomechanical states during the passing of hot metallic material through the de- formation volume in a process of plane rolling with smooth rools were analysed by an experimental-nu- merical method. These states,which are markedly inhomogeneous in the length as well as in the height of the deformation zone,were taken as the basis for physical simulation of rolling the material at a certain lavel(i. e. stream line) of the deformation zone.Their influences on local yield stresses and on the development of the microstructure were checked.The efficiency of physical simulation of rolling with the Gleeble 1500 simulating equipment was examined.The states at which the transport of metallic material through the deformation zone between smooth rolls takes place were analysed by a visioplastic method,while physical simulation of rolling was made by thermomechanically controlled cylindrical compression tests.The tests were made with industrially manufactrued X5Grni8.9 austenitic stainless steel.

词汇拼写错误简析

词汇拼写错误在学生的应试过程中屡见不鲜。就其类型来说,主要有以下四种: 1.字母遗漏。例:government→goverment, fisherman→fishman; 2.字母添加。例:Atlantic→Atlantica, professor→proffessor; 3.字母错位。例:receive→recieve, friend→freind; 4.字母变易。倒:secretary→secretory, repair→repare 产生上述错误的原因是多种多样的。归纳起来大致可有以下十个方面: 1.受音、形、义相似的词的影响。例: 受“音”的影响:weather→whether, steel→steal; 受“形”的影响: marry→merry;

The Most Important Ethical Concerns in Science

The most unethical behaviors in science are of falsifying data and stealing ideas from previous investigators. But for publishing papers with high similarity and editing papers with coercion, it is necessary to carry out a concrete analysis case by case.

A case of acquired right-sided subclavian steal syndrome successfully treated with stenting using brachial approach

Subclavian steal syndrome (SSS) is defined as a group of symptoms that arise from reversed blood flow in the ipsilateral vertebral artery. It is the consequence of proximal occlusion or high-grade stenosis of the subclavian artery. The subclavian obstructive lesions are mostly located in the proximal segment of the subclavian artery and predominantly on the left side. In contrast, there are only a small number of patients that present with right-sided symptoms and even fewer with bilateral symptoms. Endovascular therapy of occlusions and high-grade stenosis of subclavian artery proximal to the origin of the vertebral artery becomes an established therapy in last two decades. We report a case of successful endovascular treatment of right-sided subclavian steal and high-grade (80%) right subclavian artery stenosis due to atherosclerotic occlusive disease with balloon-expandable stent using brachial approach.