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Tunnel vision optimization method for VR flood scenes based on Gaussian blur

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International Journal of Digital Earth 2021年第7期14卷 821-835页

作者： Lin Fu Jun Zhu Weilian Li Qing Zhu Bingli Xu Yakun Xie Yunhao Zhang Ya Hu jingtao lu Pei Dang Jigang You Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengduPeople’s Republic of China Department of Information and Communication The Army Academy of Armored ForcesBejingPeople’s Republic of China

The visualization of flood disasters in virtual reality(VR)scenes is useful for the representation and sharing of disaster knowledge and can effectively improve users’cognitive efficiency in comprehending disaster ***,the existing VR methods of visualizing flood disaster scenes have some shortcomings,such as low rendering efficiency and poor user *** this paper,a tunnel vision optimization method for VR flood scenes based on Gaussian blur is *** key techniques are studied,such as region of interest(ROI)calculation and tunnel vision optimization considering the characteristics of the human visual system.A prototype system has been developed and used to carry out an experimental case *** experimental results show that the number of triangles drawn in a flood VR scene is reduced by approximately 30%–40%using this method and that the average frame rate is stable at approximately 90 frames per second(fps),significantly improving the efficiency of scene rendering and reducing motion sickness.

关键词： Flood disaster virtual reality Gaussian blur tunnel vision scene optimization

Time-energy distribution of photoelectron from atomic states with different magnetic quantum numbers in elliptically polarized laser fields

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Chinese Physics B 2024年第9期33卷 374-382页

作者： Jingyang Xu Li Guo Xin Qi Ronghua lu Min Zhang jingtao Zhang Jing Chen Department of Physics Shanghai Normal UniversityShanghai 200234China Key Laboratory for Quantum Optics and Center for Cold Atom Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118China

A Wigner-distribution-like(WDL)function based on the strong-field approximation(SFA)theory is used to investigate the ionization time of the photoelectron emitted from the initial states with different magnetic quantum number m in elliptically polarized electric *** saddle-point method is adopted for *** different m states,a discrepancy exists in the WDL distributions of the photoelectrons emitted in a direction close to the major axis of the laser field *** on the saddle-point analysis,this discrepancy can be ascribed to the interference between electrons ionized from two tunneling *** results show that the relationships between the tunneling instants and kinetic energy of photoelectrons are the same for different m initial states when the Coulomb potential is not *** work sheds some light on the ionization-time information of electrons from different magnetic quantum states.

关键词： strong-field ionization Wigner-distribution-like ionization instant

Dietary saccharin sodium supplementation improves the production performance of dairy goats without residue in milk in summer

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Animal Nutrition 2024年第3期18卷 166-176页

作者： Xiongfei Zhang Jirong Lv jingtao Hui Ao Wu Lichao Zhao Linyu Feng lu Deng Miao Yu Feng Liu Junhu Yao Xinjian Lei College of Animal Science and Technology Northwest A&F UniversityYanglingShaanxi 712100China Key Laboratory of Livestock Biology Northwest A&F UniversityYanglingShaanxi 712100China Sichuan Provincial Animal Feeding Regulation Center DadHank Biotechnology CorporationChengduSichuan 611130China

The purpose of this study was to investigate the effects of dietary saccharin sodium supplementation on production performance,serum biochemical indicators,and rumen fermentation of dairy goats in *** Guanzhong dairy goats with similar body weight,days in milk,and milk yield were randomly divided into two dietary treatments:(1)CON:basal diet;(2)SS:basal diet+150 mg/kg saccharin sodium on the basis of dry *** experiment lasted 35 d,including 7 d for adaptation and 28 d for dietary treatments,sampling and data *** dairy goat was housed individually in a clean separate pen with ad libitum access to diet and *** goats fed SS diet had increased dry matter intake(DMI;P=0.037),4%fat corrected milk yield(P=0.049),energy corrected milk yield(P=0.037),milk protein yield(P=0.031),and total solids yield(P=0.036).Serum activity of aspartate aminotransferase(P=0.047)and concentrations of 70-kDa heat shock protein(P=0.090),malondialdehyde(P=0.092),and total protein(P=0.057)were lower in goats fed SS diet than those fed CON *** of saccharin sodium tended to increase activity of glutathione peroxidase in serum(P=0.079).The concentrations of rumen total volatile fatty acid(P=0.042)and butyrate(P=0.038)were increased by saccharin sodium *** supplementation of saccharin sodium increased the relative abundance of Lachnobacterium(P=0.022),Pseudoramibacter(P=0.022),Shuttleworthia(P=0.025),and Syntrophococcus(P=0.037),but reduced the relative abundance of Prevotella_1(P=0.037)and Lachnospiraceae_UCG_008(P=0.037)in *** sodium was observed in feces and urine of goats fed diet supplemented with saccharin sodium,but saccharin sodium was undetectable in the milk of goats receiving SS *** conclusion,administration of saccharin sodium was effective in increasing fat and energy corrected milk yield by increasing DMI and improving rumen fermentation and antioxidant capacity of dairy goats in *** addition,s

关键词： Dairy goat Heat stress Production performance Rumen fermentation Rumen microorganisms Saccharin sodium

Echinatin inhibits tumor growth and synergizes with chemotherapeutic agents against human bladder cancer cells by activating p38 and suppressing Wnt/β-catenin pathways

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Genes & Diseases 2024年第2期11卷 1050-1065页

作者： Xiaoxuan Wang Lijuan luo jingtao Xu Qiuping lu Haichao Xia Yanran Huang lulu Zhang Liping Xie Habu Jiwa Shiqiong Liang Xiaoji luo Jinyong luo Key Laboratory of Diagnostic Medicine Designated By the Chinese Ministry of Education School of Laboratory MedicineChongqing Medical UniversityChongqing 400016China Department of Orthopedics The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China

Bladder cancer (BC) is one of the most common malignant tumors in the urinary *** to the poor prognosis and high mortality rate of the disease,it is urgent to develop new drugs with high efficacy and low toxicity to treat *** (Ecn) is a bioactive natural flavonoid oflicorice that has attracted special attention for its promising anti-tumor ***,we explored the inhibitory effects of Echinatin on BC cells and probed the possible molecular *** found that Ecnin vitro inhibited the proliferation,migration,and invasion,arrested the cell cycle at the G2/M phase,and promoted apoptosis in BC ***,Ecn had no notable cytotoxicity towards human normal *** subsequently confirmed that Ecn restrained xenograft tumor growth and metastasis of BC cells in vivo .Mechanistically,Ecn activated the p38 signaling pathway but inactivated the Wnt/β-catenin signaling pathway,while over-expression of β-catenin and the p38 inhibitor both attenuated the inhibitory effects of Ecn on BC ***,Ecn combined with cisplatin (DDP) or gemcitabine (Gem) had synergistic inhibitory effects on BC *** summary,our results validate that Ecn inhibits the tumor growth of human BC cells via p38 and Wnt/β-catenin signaling *** meaningfully,our results suggest a potential strategy to enhance DDP- or Gem-induced inhibitory effects on BC cells by combining with Ecn.

关键词： Bladder cancer Combination chemotherapy Echinatin p38 Wnt/β-catenin

Clinical Value of Using Ultrasound to Assess Calcification Patterns in Thyroid Nodules

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Clinical Value of Using Ultrasound to Assess Calcification P...

中华医学会第十次全国内分泌学学术会议

作者： Zhaohui lu,Yiming Mu,Haiqing Zhu,Yukun luo,Qinglong Kong,jingtao Dou,Juming lu 解放军总医院内分泌科

Background:Thyroid nodules are extremely common, and epidemiological studies have shown that from 4 to 8%of the adult population have nonsymptomatic thyroid nodules that can palpated,and that 10--41%have thyroid nodul...

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木瓜苷的遗传毒性研究

安徽医科大学学报 2013年第8期48卷 922-925页

作者：路景涛魏伟安徽医科大学临床药理研究所抗炎免疫药物教育部重点实验室安徽省中药研究与开发重点研究室合肥230032

目的评价木瓜苷(GCS)的遗传毒性。方法采用Ames试验,计数回复突变菌落数;用中国仓鼠肺(CHL)细胞染色体畸变试验,观察染色体结构畸变类型并计算畸变率;采用小鼠胸骨骨髓微核试验,计算小鼠胸骨骨髓细胞微核发生率。结果在加或不加肝微粒... 详细信息

目的评价木瓜苷(GCS)的遗传毒性。方法采用Ames试验,计数回复突变菌落数;用中国仓鼠肺(CHL)细胞染色体畸变试验,观察染色体结构畸变类型并计算畸变率;采用小鼠胸骨骨髓微核试验,计算小鼠胸骨骨髓细胞微核发生率。结果在加或不加肝微粒体代谢活化酶(S9)条件下,GCS(62～5 000μg/皿)无诱发组氨酸缺陷型鼠伤寒沙门菌株TA97、TA98、TA100和TA102回复突变的作用;同样在加或不加S9的条件下,GCS(31.25、62.5、125μg/ml)组未诱发中国仓鼠肺细胞染色体畸变;灌胃给予小鼠GCS后,GCS 3个剂量(312.5、1 250、5 000 mg/kg)均未增加小鼠胸骨骨髓细胞微核率。结论此研究条件下,GCS不具有致基因突变和染色体畸变的遗传毒性。

关键词：木瓜苷 Ames试验染色体畸变微核

高速铁路列车长大坡道混合储能系统容量优化配置

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电工技术学报 2023年第20期38卷 5645-5660页

作者：李欣卢景涛肖林润靳忠福兰州交通大学新能源与动力工程学院兰州730070 兰州交通大学自动化与电气工程学院兰州730070 中铁第一勘察设计院集团有限公司西安710043

高速铁路列车在以下坡方向经过长大坡道路段时会产生大量的再生制动能量,若将此能量合理回收利用将有利于低碳交通与节能减排,实现“3060”双碳目标,更有利于列车行车安全。针对地面式再生制动能量混合储能系统容量高效合理配置问题,该... 详细信息

高速铁路列车在以下坡方向经过长大坡道路段时会产生大量的再生制动能量,若将此能量合理回收利用将有利于低碳交通与节能减排,实现“3060”双碳目标,更有利于列车行车安全。针对地面式再生制动能量混合储能系统容量高效合理配置问题,该文在分析高铁长大坡道的再生制动能量实测数据基础上,根据其功率分层的特性给出了混合储能系统的分段配置方案;考虑全域经济性能水平建立混合储能系统容量优化模型,针对传统优化算法迭代次数高、求解效率低等问题,利用Levy飞行产生初始解并在求解过程中不断记忆更新,给出了一种基于Levy飞行的改进模拟退火算法(LESA);最后,选取西成高铁秦岭北麓长大坡道路段,鄠邑(户县东)站牵引变电所实测数据进行算例仿真。结果表明,该方法可使混合储能系统在寿命期内回收大量再生制动能量,占牵引耗电量16.3%。

关键词：高铁长大坡道再生制动能量混合储能系统容量优化配置改进模拟退火算法

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Role of Gonadorelin Stimulation Test in Differentiating Patients with Hypogonadotropic Hypogonadism from Those with Constitutional Delay of Growth and Puberty

中华医学会第十次全国内分泌学学术会议

作者： Bing Xue,Yiming Mu,Xiaojin Li,Xuan Wang,Li Zang,Zhaohui Lv,jingtao Dou,Juming lu,Changyu Pan Chinese PLA General Hospital

Objective:To investigate the effects and possible molecular mechanisms of leukemia related protein 16(LRP16) gene on insulin sensitivity in 3T3-L1 adipocytes. Methods:(1)The LRP 16 gene over-expressing adipocyte cell line 3T3-L1-LRP16 and its control cell line 3T3-L1-3.1 were constructed using lipidosome transfection *** fulldifferentiated above adipocytes were pretreated with or without

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Role of Gonadorelin Stimulation Test in Differentiating Pati...