Therapeutic effect of Keap1-Nrf2-ARE pathway-related drugs on age-related eye diseases through anti-oxidative stress

Age-related eye diseases,including cataract,glaucoma,diabetic retinopathy(DR),and age-related macular degeneration(AMD),are the leading causes of vision loss in the world.Several studies have shown that the occurrence and development of these diseases have an important relationship with oxidative stress in the eye.The Keap1-Nrf2-ARE pathway is a classical pathway that resists oxidative stress and inflammation in the body.This pathway is also active in the development of age-related eye diseases.A variety of drugs have been shown to treat agerelated eye diseases through the Keap1-Nrf2-ARE(Kelch-like ECH-Associating protein 1-nuclear factor erythroid 2 related factor 2-antioxidant response element)pathway.This review describes the role of oxidative stress in the development of age-related eye diseases,the function and regulation of the Keap1-Nrf2-ARE pathway,and the therapeutic effects of drugs associated with this pathway on age-related eye diseases.

Clinical application of electrically evoked compound action potentials

ECAPs are the summary of multiple neurons’ spikes which could be recorded by a bidirectional stimulation-recording system via the cochlear implant,with the artifact elimination paradigms of forward-masking subtraction paradigm or alternating polarity paradigm.Three kinds of FDA approved cochlear implants support ECAP testing.This article is to summarize the clinical application of ECAP lest.ECAP test after insertion of electrode during implant operation has been widely used during cochlear implant surgery.In recent years.ECAP thresholds are also used to estimate the T levels and C levels helping programming.However,correlation between ECAP thresholds and psychophysical thresholds is affected by many factors.So far,ECAPs cannot yet be a good indicator of post-operative hearing and speech performance.

Reliability and validity of the Chinese version of the PedsQL Multidimensional Fatigue Scale in children with acute leukemia

Background:The PedsQL Multidimensional Fatigue Scale(PedsQL^(TM)MFS)is widely used to rate fatigue in children living in English-speaking countries.However,insufficient instruments are available to conduct parallel assessment on fatigue in parents and children in China.In this regard,an appropriate measurement method must be developed.Objectives:This study aims to determine the reliability and validity of the Chinese-language PedsQL^(TM)MFS.Methods:Children with cancer(n=125)and their parents were surveyed in Guangzhou,China.The parents of children aged 2e4 years completed the PedsQL^(TM)MFS proxy reports,whereas the other children and their parents completed the questionnaires by themselves.Results:The PedsQL^(TM)MFS-Chinese version demonstrated satisfactory internal consistency reliability(child self-report Cronbach's a=0.87;parent self-report Cronbach's a=0.93).The factor loadings of the items ranged from 0.78 to 0.87 for general fatigue,0.56e0.78 for sleep/rest fatigue,and 0.62e0.89 for cognitive fatigue.Conclusion:This study proves that the PedsQL^(TM)MFS-Chinese version is an effective tool for screening fatigue in Chinese children with cancer.

面向双碳目标的自动化和智能化理论与技术

基于国家自然科学基金委员会第324期双清论坛,本文针对面向双碳目标高耗能工业低碳运行与多介质能源协同减碳调控的国家重大需求,围绕低碳工业智能化和多能互补协同智能调控的自动化与智能化系统理论、关键技术及面向应用层面的基础性问题,分析了面向双碳目标的自动化和智能化的现状与发展趋势。在低碳工业智能化方面,聚焦工业生产全流程碳排放智能建模方法,低碳工业生产全流程数字化网络化智能化,流程工业低碳绿色制造,制造业异质能源综合利用与优化调控;在多能互补协同智能调控方面,聚焦研究多介质能源转化,多介质能源供给协同调控,多能互补与源储荷调控,能源“源-网-荷-储”一体化决策与综合安全,零碳智慧能源系统的结构化变革,城市智慧能源管控。围绕上述内容,讨论了面临的挑战,给出了凝练的科学问题与主要研究方向,提出了相关的政策建议。

Effects of deformation temperatures on microstructures,aging behaviors and mechanical properties of Mg-Gd-Er-Zr alloys fabricated by hard-plate rolling

In this investigation,a high-strength Mg-12Gd-1.0Er-0.5Zr(wt.%)alloy sheet was produced by hot extrusion(HE)and subsequent hard-plate rolling(HPR)at different temperatures.The results indicate that the microstructures of these final-rolled sheets are inhomogeneous,mainly including coarse deformed grains and dynamic recrystallized(DRXed)grains,and the volume fraction of these coarse deformed grains increases as the rolling temperature increases.Thus,more DRXed grains can be found in R-385℃sheet,resulting in a smaller average grain size and weaker basal texture,while the biggest grains and the highest strong basal texture are present in R-450℃sheet.Amounts of dynamic precipitation ofβphases which are mainly determined by the rolling temperature are present in these sheets,and its precipitation can consume the content of Gd solutes in the matrix.As a result,the lowest number density ofβphase in R-450℃sheet is beneficial to modify the age hardening response.Thus,the R-450℃sheet displays the best age hardening response because of a severe traditional precipitation ofβ’(more)andβH/βM(less)precipitates,resulting in a sharp improvement in strength,i.e.ultimate tensile strength(UTS)of∼518±17 MPa and yield strength(YS)of∼438±18 MPa.However,the elongation(EL)of this sheet reduces greatly,and its value is∼2.7±0.3%.By contrasting,the EL of the peak-aging R-385℃sheet keeps better,changing from∼4.9±1.2%to∼4.8±1.4%due to a novel dislocation-induced chain-like precipitate which is helpful to keep good balance between strength and ductility.

Neurotrophins and neural stem cells in posttraumatic brain injury repair

Traumatic brain injury(TBI)is the main cause of disability,mental health disorder,and even death,with its incidence and social costs rising steadily.Although different treatment strategies have been developed and tested to mitigate neurological decline,a definitive cure for these conditions remains elusive.Studies have revealed that vari-ous neurotrophins represented by the brain-derived neurotrophic factor are the key regulators of neuroinflammation,apoptosis,blood-brain barrier permeability,neurite regeneration,and memory function.These factors are instrumental in alleviating neu-roinflammation and promoting neuroregeneration.In addition,neural stem cells(NSC)contribute to nerve repair through inherent neuroprotective and immunomodulatory properties,the release of neurotrophins,the activation of endogenous NSCs,and in-tercellular signaling.Notably,innovative research proposals are emerging to combine BDNF and NSCs,enabling them to synergistically complement and promote each other in facilitating injury repair and improving neuron differentiation after TBI.In this review,we summarize the mechanism of neurotrophins in promoting neurogen-esis and restoring neural function after TBI,comprehensively explore the potential therapeutic effects of various neurotrophins in basic research on TBI,and investigate their interaction with NSCs.This endeavor aims to provide a valuable insight into the clinical treatment and transformation of neurotrophins in TBI,thereby promoting the progress of TBI therapeutics.

Investigation on photonic crystal nanobeam cavity based on mixed diamond–circular holes

A photonic crystal nanobeam cavity(M-PCNC)with a structure incorporating a mixture of diamond-shaped and circular air holes is pro-posed.The performance of the cavity is simulated and studied theoretically.Using thefinite-difference time-domain method,the parameters of the M-PCNC,including cavity thickness and width,lattice constant,and radii and numbers of holes,are optimized,with the quality factor Q and mode volume Vm as performance indicators.Mutual modulation of the lattice constant and hole radius enable the proposed M-PCNC to realize outstanding performance.The optimized cavity possesses a high quality factor Q 1.45105 and an ultra-small mode=×volume Vm 0.01(λ/n)[Zeng et al.,Opt Lett 2023:48;3981–3984]in the telecommunications wavelength range.Light can be progres-=sively squeezed in both the propagation direction and the perpendicular in-plane direction by a series of interlocked anti-slots and slots in the diamond-shaped hole structure.Thereby,the energy can be confined within a small mode volume to achieve an ultra-high Q/Vm ratio.

Small but mighty:Empowering sodium/potassium-ion battery performance with S-doped SnO_(2) quantum dots embedded in N,S codoped carbon fiber network

SnO_(2) has been extensively investigated as an anode material for sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs)due to its high Na/K storage capacity,high abundance,and low toxicity.However,the sluggish reaction kinetics,low electronic conductivity,and large volume changes during charge and discharge hinder the practical applications of SnO_(2)-based electrodes for SIBs and PIBs.Engineering rational structures with fast charge/ion transfer and robust stability is important to overcoming these challenges.Herein,S-doped SnO_(2)(S-SnO_(2))quantum dots(QDs)(≈3 nm)encapsulated in an N,S codoped carbon fiber networks(S-SnO_(2)-CFN)are rationally fabricated using a sequential freeze-drying,calcination,and S-doping strategy.Experimental analysis and density functional theory calculations reveal that the integration of S-SnO_(2) QDs with N,S codoped carbon fiber network remarkably decreases the adsorption energies of Na/K atoms in the interlayer of SnO_(2)-CFN,and the S doping can increase the conductivity of SnO_(2),thereby enhancing the ion transfer kinetics.The synergistic interaction between S-SnO_(2) QDs and N,S codoped carbon fiber network results in a composite with fast Na+/K+storage and extraordinary long-term cyclability.Specifically,the S-SnO_(2)-CFN delivers high rate capacities of 141.0 mAh g^(−1) at 20 A g^(−1) in SIBs and 102.8 mAh g^(−1) at 10 A g^(−1) in PIBs.Impressively,it delivers ultra-stable sodium storage up to 10,000 cycles at 5 A g^(−1) and potassium storage up to 5000 cycles at 2 A g^(−1).This study provides insights into constructing metal oxide-based carbon fiber network structures for high-performance electrochemical energy storage and conversion devices.

Simultaneously enhanced thermal conductivity and mechanical performance of carbon nanotube reinforced ZK61 matrix composite

Alloying seriously deteriorates the thermal conductivity of magnesium(Mg)alloys,thus,restricts their applications in the fields of computer,communication,and consumer products.In order to improve the thermal conductivity of Mg alloys,adding carbon nanotube(CNT)combined with aging treatment is proposed in this work,i.e.fabricating the D-CNT(a kind of dispersed CNT)reinforced ZK61 matrix composite via powder metallurgy,and conducting aging treatment to the composite.Results indicate the as-aged ZK61/0.6 wt.%D-CNT composite achieved an excellent thermal conductivity of 166 W/(mK),exhibiting 52.3%enhancement in comparison with matrix,as well as tensile yield strength of 321 MPa,ultimate tensile strength of 354 of MPa,and elongation of 14%.The simultaneously enhanced thermal conductivity and mechanical performance are mainly attributed to:(1)the embedded interface of the D-CNT with matrix and(2)the coherent interface of precipitates with matrix.It is expected the current work can provide a clue for devising Mg matrix composites with integrated structural and functional performances,and enlarge the current restricted applications of Mg alloys.

Equilibrium reconstruction method for self-organized plasmas on reversed field pinches with polarimeter-interferometer

In the reversed field pinch(RFP),plasmas exhibit various self-organized states.Among these,the three-dimensional(3D)helical state known as the“quasi-single-helical”(QSH)state enhances RFP confinement.However,accurately describing the equilibrium is challenging due to the presence of 3D structures,magnetic islands,and chaotic regions.It is difficult to obtain a balance between the available diagnostic and the real equilibrium structure.To address this issue,we introduce KTX3DFit,a new 3D equilibrium reconstruction code specifically designed for the Keda Torus eXperiment(KTX)RFP.KTX3DFit utilizes the stepped-pressure equilibrium code(SPEC)to compute 3D equilibria and uses polarimetric interferometer signals from experiments.KTX3DFit is able to reconstruct equilibria in various states,including axisymmetric,doubleaxis helical(DAx),and single-helical-axis(SHAx)states.Notably,this study marks the first integration of the SPEC code with internal magnetic field data for equilibrium reconstruction and could be used for other 3D configurations.

Aurora B facilitates cholangiocarcinoma progression by stabilizing c-Myc

Background: Cholangiocarcinoma(CCA), a malignancy that arises from biliary epithelial cells, has a dismal prognosis, and few targeted therapies are available. Aurora B, a key mitotic regulator, has been reported to be involved in the progression of various tumors, yet its role in CCA is still unclarified.Methods: Human CCA tissues and murine spontaneous CCA models were used to assess Aurora B expression in CCA. A loss-of-function model was constructed in CCA cells to determine the role of Aurora B in CCA progression. Subcutaneous and liver orthotopic xenograft models were used to assess the therapeutic potential of Aurora B inhibitors in CCA.Results: In murine spontaneous CCA models, Aurora B was significantly upregulated. Elevated Aurora B expression was also observed in 62.3% of human specimens in our validation cohort(143 CCA specimens), and high Aurora B expression was positively correlated with pathological parameters of tumors and poor survival. Knockdown of Aurora B by siRNA and heteroduplex oligonucleotide(HDO)or an Aurora B kinase inhibitor(AZD1152) significantly suppressed CCA progression via G2/M arrest induction. An interaction between Aurora B and c-Myc was found in CCA cells. Targeting Aurora B significantly reduced this interaction and accelerated the proteasomal degradation of c-Myc, suggesting that Aurora B promoted the malignant properties of CCA by stabilizing c-Myc. Furthermore, sequential application of AZD1152 or Aurora B HDO drastically improved the efficacy of gemcitabine in CCA.Conclusions: Aurora B plays an essential role in CCA progression by modulating c-Myc stability and represents a new target for treatment and chemosensitization in CCA.

Non-perturbative dynamics of flat-band systems with correlated disorder

We develop a numerical method for the time evolution of Gaussian wave packets on flat-band lattices in the presence of correlated disorder.To achieve this,we introduce a method to generate random on-site energies with prescribed correlations.We verify this method with a one-dimensional(1D)cross-stitch model,and find good agreement with analytical results obtained from the disorder-dressed evolution equations.This allows us to reproduce previous findings,that disorder can mobilize 1D flat-band states which would otherwise remain localized.As explained by the corresponding disorder-dressed evolution equations,such mobilization requires an asymmetric disorder-induced coupling to dispersive bands,a condition that is generically not fulfilled when the flat-band is resonant with the dispersive bands at a Dirac point-like crossing.We exemplify this with the 1D Lieb lattice.While analytical expressions are not available for the two-dimensional(2D)system due to its complexity,we extend the numerical method to the 2D a–T3 model,and find that the initial flat-band wave packet preserves its localization when a=0,regardless of disorder and intersections.However,when a̸=0,the wave packet shifts in real space.We interpret this as a Berry phase controlled,disorder-induced wave-packet mobilization.In addition,we present density functional theory calculations of candidate materials,specifically Hg1−xCdxTe.The flat-band emerges near the G point(α=0)in the Brillouin zone.

Using harmonic beam combining to generate pulse-burst in nonlinear optical laser

The ultrashort lasers working in pulse-burst mode reveal great machining performance in recent years. The number of pulses in bursts effects greatly on the removal rate and roughness. To generate a more equal amplitude of pulses in burst with linear polarization output and time gap adjustable, we propose a new method by the harmonic beam combining(HBC).The beam combining is commonly used in adding pulses into the output beam while maintaining the pulse waveform and beam quality. In the HBC, dichroic mirrors are used to combine laser pulses of fundamental wave(FW) into harmonic wave(HW), and nonlinear crystals are used to convert the FW into HW. Therefore, HBC can add arbitrarily more HW pulses to generate pulse-burst in linear polarization with simple structure. The amplitude of each pulse in bursts can be adjusted the same to increase the stability of the burst, the time gap of each pulse can be adjusted precisely by proper time delay. Because HBC adds pulses sequentially, the peak power density of the burst is the same as each pulse, pulses can be combined without concern of back-conversion which often occurs in high peak power density. In the demonstration, the extendibility of HBC was verified by combining two beams with a third beam. The combined efficiency rates were larger than 99%, and the beam quality of each beam was maintained at M^(2)≈1.4.

Carotid versus axillary artery cannulation for descending aorta remodeling in type A acute aortic dissection

BACKGROUND Arterial cannulation sites for the surgical repair of type A aortic dissection(AAD)have evolved from right axillary artery(AA)cannulation to bilateral carotid artery(CA)based of femoral artery(FA)cannulation.Postoperative descending aorta remodeling is closely linked to the false lumen area ratio(FLAR),defined as false lumen area/aortic area,as well as to the incidence of renal replacement therapy(RRT).AIM To investigate the effect of the updated arterial cannulation strategy on descending aortic remodeling.METHODS A total of 443 AAD patients who received FA combined cannulation between March 2015 and March 2023 were included in the study.Of these,209 received right AA cannulation and 234 received bilateral CA cannulation.The primary outcome was the change in FLAR,as calculated from computed tomography angiography in three segments of the descending aorta:Thoracic(S1),upper abdominal(S2),and lower abdominal(S3).Secondary outcomes were the incidence of RRT and the serum inflammation response,as observed by the levels of high sensitivity C reaction protein(hs-CRP)and Interleukin-6(IL-6).RESULTS The postoperative/preoperative ratio of FLAR in S2 and S3 was higher in the AA group compared to the CA group(S2:0.80±0.08 vs 0.75±0.07,P<0.001;S3:0.57±0.12 vs 0.50±0.12,P<0.001,respectively).The AA group also had a significantly higher incidence of RRT(19.1%vs 8.5%,P=0.001;odds ratio:2.533,95%CI:1.427-4.493)and higher levels of inflammation cytokines 24 h after the procedure[hr-CRP:117±17 vs 104±15 mg/L;IL-6:129(103,166)vs 83(69,101)pg/mL;both P<0.001]compared to the CA group.CONCLUSION The CA cannulation strategy was associated with better abdominal aorta remodeling after AAD repair compared to AA cannulation,as observed by a greater change in FLAR and lower incidence of RRT.

无阿片类药物麻醉在非插管胸腔镜手术中的应用

目的评价无阿片类药物麻醉在非插管胸腔镜手术中的安全性和可行性。方法选取2019年5月—2019年11月在胜利油田中心医院行胸腔镜下单侧肺叶切除术(肺叶、肺段楔形)患者60例作为研究对象。采用随机数字表法分为无阿片麻醉组和对照组,每组30例。无阿片麻醉组采取无阿片类药物麻醉诱导后置入喉罩保留自主呼吸,对照组行传统全身麻醉双腔气管插管。记录两组患者的麻醉满意度、手术视野暴露满意度、手术时间、苏醒时间、拔管(喉罩)时间、术毕主动下床活动时间和出院时间;记录术中及术后24 h内不良反应发生例数。结果两组的麻醉效果、手术视野暴露满意度比较,差异无统计学意义(P>0.05);两组术后苏醒时间、拔管时间、术毕下床活动时间和出院时间比较,无阿片麻醉组少于对照组(P<0.05);两组术中呛咳、低氧血症、二氧化碳蓄积发生例数比较,差异无统计学意义(P>0.05)。术中心血管不良事件无阿片麻醉组7例,对照组21例,两组比较,差异有统计学意义(P<0.05);两组术后呼吸抑制、躁动、头晕、皮肤瘙痒患者比较,无阿片麻醉组少于对照组(P<0.05);两组术后24 h内恶心、呕吐比较,差异无统计学意义(P>0.05),但术后6 h内无阿片麻醉组恶心和呕吐的发生少于对照组(P<0.05)。结论无阿片类药物麻醉应用于非插管胸腔镜手术安全可行,可减少术后不良反应,有利于患者的快速康复。

基因修饰诱导骨髓间充质干细胞分化治疗视神经损伤

目的:探讨基因修饰诱导骨髓间充质干细胞分化治疗视神经损伤的效果。方法:将带有大鼠睫状神经营养因子(CNTF)编码序列的慢病毒转染进入从大鼠股骨中分离出的骨髓间充质干细胞。将采用钳夹视神经方法构建的视神经损伤模型大鼠随机分为对照组和研究组,分别于造模成功后第4、7、10、13d,研究组术眼玻璃体腔内注入经转染的骨髓间充质干细胞悬浮液,对照组术眼玻璃体腔注入等量生理盐水。造模成功后第14d,观察两组大鼠的光反射情况,视网膜神经节细胞数量及胶质原纤维酸性蛋白(GFAP)和Caspase-3蛋白表达水平。结果:研究组大鼠光反射恢复率明显高于对照组(83%vs25%,P<0.05),视网膜细胞结构相对整齐,可见少量空泡,而对照组大鼠视网膜细胞结构欠整齐,可见明显空泡,视网膜神经节细胞数明显减少,且对照组大鼠视网膜GFAP和Caspase-3蛋白表达水平均高于研究组。结论:基因修饰诱导骨髓间充质干细胞分化能够有效治疗大鼠视神经损伤。

CCK-8法检测蓝光和白光对ARPE-19细胞增殖的影响

目的:探讨蓝光和白光分别光照不同时间对人视网膜色素上皮(ARPE-19)细胞增殖的影响,为进一步检测光照损伤过程中相关因子的变化情况,研究光照损伤过程中的信号转导机制奠定基础。方法:收集生长状态良好的ARPE-19细胞进行实验,制作CCK-8标准曲线,确定实验合适的ARPE-19细胞密度及CCK-8试剂的反应时间。将细胞分为避光组、蓝光组、白光组,分别光照3、6、9h,再避光培养12h后采用CCK-8法检测不同光源光照不同时间对ARPE-19细胞增殖率的影响。结果:通过CCK-8标准曲线选择每孔细胞数量为20000个,CCK-8溶液作用4h后测量相应吸光度值。CCK-8检测结果示,避光组、蓝光组、白光组三组细胞光照不同时间细胞增殖率比较,差异有统计学意义(P<0.01)。蓝光组细胞光照3、6、9h,各时间点细胞增殖率比较,差异有统计学意义(P<0.001),且随着光照时间的延长,细胞增殖率逐渐降低。白光组细胞光照3、6、9h,各时间点细胞增殖率比较,差异有统计学意义(P<0.05),其中光照3h和6h细胞增殖率比较,差异有统计学意义(P<0.05),而光照9h分别与光照3、6h细胞增殖率比较,差异均无统计学意义(P=0.253、0.120)。白光光照3～6h细胞增殖率呈下降趋势,而光照6～9h细胞增殖率呈现上升趋势。相同光照时间,蓝光组和白光组细胞增殖率均低于避光组,且蓝光组细胞增殖率均低于白光组,差异均有统计学意义(P<0.05)。结论:光照能抑制ARPE-19细胞的增殖,其中蓝光光照细胞增殖率明显低于白光,且随光照时间的增长,细胞增殖率进一步降低。

Dosimetric Evaluation of Body Contour Changes to Target Volumes and Organs at Risk for Cervix and Head and Neck Radiotherapy Plans

Purpose: To investigate how much dose discrepancy would be caused by the anatomy changes during the radiotherapy (RT) course. Methods: Ten cervical cancer and ten nasopharyngeal carcinoma (NPC) CT datasets from RT patients were enrolled. The body contour from different directions changed to simulate the weight loss or gain for cervical cancer patients, who had been treated with external-beam RT using intensity-modulated radiation therapy (IMRT) or volumetric modulated arc therapy (VMAT). Moreover, the body contour from facial and shoulder superior-inferior positional change had been also assessed for NPC patients using IMRT or VMAT. The new CT (n-CT) was generated by the body contour changes with different directions based on original CT datasets. The dosimetric parameters to target volumes and organs at risk (OARs) were evaluated in Eclipse based on n-CT. Results: The target volumes and OARs were influenced by the body contour changes. Body contour expansion resulted in coverage loss, whereas body contour shrinkage increased the dose to the OARs. These findings were generally consistent for both IMRT and VMAT plans. Over a course of research, the dose to 95% of the target volumes for cervical cancer decreased by up to 2.83% per cm for IMRT and 2.87% per cm for VMAT (P < 0.05). And the influence on H&N plans was that the dose to 95% of the target volumes (low risk regions) decreased by up to 4.45% per cm. Conclusions: The RT staff could determine whether resimulation and replaning or not according to which body contour directions were changed.

拉米夫定联合其他药物对HIV/HBV合并感染者的抗HBV效果分析

目的探讨拉米夫定对人免疫缺陷病毒(HIV)/乙型肝炎病毒(HBV)合并感染者的抗HBV疗效,为合理选择HIV/HBV合并感染者的抗病毒方案提供依据。方法 A组60例HIV/HBV合并感染者使用拉米夫定(300mg qd)+齐多夫定(300mg bid)+依非维仑(600mg qd)抗病毒治疗。B组60例为初治的慢性乙型肝炎(CHB)患者,使用3TC(100mg qd)。两组患者治疗前均进行HBV DNA定量、HBV血清标志物(HBVM)定量检测、HBV YMDD变异检测。所有患者均在治疗后每3个月检测1次HBVM、HBV DNA及肝功能,治疗观察满2年。比较两组患者治疗后HBV DNA的阴转率。结果 A组患者治疗后HBV DNA的阴转率均较B组高(P<0.05);治疗满96周,A组患者仍保持100%的HBV DNA阴转率。结论 HIV/HBV合并感染者使用含3TC(不含替诺福韦TDF)的抗病毒治疗方案,显示出良好的抗HBV效果,且未发生高耐药的表现。

WADE-Net: Weighted Aggregation with Density Estimation for Point Cloud Place Recognition

Point cloud based place recognition plays an important role in mobile robotics. In this paper, we propose a weighted aggregation method from structure information adaptively for point cloud place recognition. Firstly, to preserve the prior distributions and local geometric structures, we fuse learned hidden features with handcrafted features in the beginning. Secondly, we further extract and aggregate adaptively weighted features concerning density and relative spatial information from these fused features, named Weighted Aggregation with Density Estimation (WADE) module. Then, we conduct the WADE block iteratively to group the latent manifold structures. Finally, comparison results on two public datasets Oxford Robotcar and KITTI show that the proposed approach exceeds the comparison approaches on recall rate averagely 7% - 8%.