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Ultrafast power Doppler imaging for ischemic encephalopathy:A case report

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World Journal of Clinical Cases 2023年第31期11卷 7640-7646页

作者： Li-Jie Huang Jian-Feng Jiao Qiong He Jian-wen luo Yi Guo Department of Biomedical Engineering School of MedicineTsinghua UniversityBeijing 100084China Department of Neurosurgery Beijing Tsinghua Changgung HospitalSchool of MedicineTsinghua UniversityBeijing 102218China

BACKGROUND Severely elevated intracranial pressure due to various reasons,such as decreased cerebral perfusion,can lead to devastating neurological outcomes,such as brain *** craniectomy is a life-saving procedure that is commonly performed for such a critical situation,but the changes in cerebral microvessels after brain herniation and decompression are *** power Doppler imaging(uPDI)is a new microvascular imaging technology that utilizes high frame rate plane/diverging wave transmission and advanced clutter *** significantly improves Doppler sensitivity and can detect microvessels,which are usually invisible using traditional ultrasound Doppler *** SUMMARY In this report,uPDI was used for the first time to observe the brain blood flow of a hypoperfusion area in a 4-year-old girl who underwent decompression craniectomy due to refractory intracranial hypertension(ICP)after malignant brain tumor surgery.B-mode imaging was used to verify the increased densities of the cerebral cortex and basal ganglia that were observed by computed *** uPDI showed the local blood supplies and anatomical structures of the patient after decompressive *** is potentially a more intuitive and noninvasive method for evaluating the effects of severe ICP on cerebral microvessels.

关键词： Decompression craniectomy Ultrafast power Doppler imaging Cortical layer necrosis Luxury perfusion Case report

Feed conversion ratio,residual feed intake and cholecystokinin type A receptor gene polymorphisms are associated with feed intake and average daily gain in a Chinese local chicken population

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Journal of Animal Science and Biotechnology 2018年第4期9卷 794-802页

作者： Zhenhua Yi Xing Li wen luo Zhenqiang Xu Congliang Ji Yan Zhang Qinghua Nie Dexiang Zhang Xiquan Zhang Department of Animal Genetics Breeding and ReproductionCollege of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642GuangdongChina Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics Breeding and ReproductionMinistry of AgricultureGuangzhou 510642GuangdongChina wen’s Nanfang Poultry Breeding Co.Ltd Yunfu 527400GuangdongChina

Background: The feed conversion ratio(FCR) and residual feed intake(RFI) are common indexes in measuring feed efficiency for livestock. RFI is a feed intake adjusted for requirements for maintenance and production so these two traits are related. Similarly, FCR is related to feed intake and weight gain because it is their ratio. Cholecystokinin type A receptor(CCKAR) plays an important role in animal digestive process. We examined the interplay of these three parameters in a local Chinese chicken ***: The feed intake(FI) and body weights(BW) of 1,841 individuals were monitored on a daily basis from 56 to 105 d of age. There was a strong correlation between RFI and average daily feed intake(ADFI) and a negative correlation between the FCR and daily gain(r=-0.710). Furthermore, we identified 51 single nucleotide polymorphisms(SNPs) in the CCKAR and 4 of these resulted in amino acid mutations. The C334A mutation was specifically associated with FI and the expected feed intake(EFI)(P < 0.01) and significantly associated with the average daily gain(ADG)(P < 0.05). G1290A was significantly associated with FI and EFI(P < 0.05).Conclusion: FCR is apply to weight selecting, and RFI is more appropriate if the breeding focus is feed intake. And C334A and G1290A of the CCKAR gene can be deemed as candidate markers for feed intake and weight gain.

关键词： CCKAR Chicken FCR RFI SNP

Activating Inert Sites in Cobalt Silicate Hydroxides for Oxygen Evolution through Atomically Doping

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Energy & Environmental Materials 2022年第2期5卷 655-661页

作者： Jiexin Zhu Lixue Xia wenxuan Yang Ruohan Yu Wei Zhang wen luo Yuhang Dai Wei Wei Liang Zhou Yan Zhao Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China

Metal silicate hydroxides have been recognized as efficient oxygen evolution reaction(OER)electrocatalysts,yet tailoring of their intrinsic activity remains ***,Fe had been incorporated into cobalt silicate hydroxide nanosheets and the resulted material achieves a competitive OER catalytic *** is found that the doping state obviously affects the electrical transport ***,highly dispersed Fe atoms(low-concentration Fe doping)trigger slight electron transfer to Co atoms while serried Fe(highconcentration Fe doping)attract vast *** introducing 6 at.%Fe doping,partial relatively inert Co sites are activated by atomically dispersed Fe,bearing an optimal metal 3d electronic occupation and adsorption capacity to oxygen *** introduced Co-O-Fe unit trigger the p-donation effect and decrease the number of electrons in p*-antibonding orbitals,which enhance the Fe-O covalency and the structural *** a result,the sample delivers a low overpotential of 293 mV to achieve a current density of 10 mA cm^(-2).This work clarifies the superiority of atomically dispersed doping state,which is of fundamental interest to the design of doped catalyst.

关键词： atomically doping electrochemistry electron transfer metal silicate hydroxides oxygen evolution

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对均匀的数学描述及其与混沌的关系

物理学报 2009年第6期58卷 3788-3792页

作者：罗传文东北林业大学均匀度理论及应用研究中心哈尔滨150040

基于独占球的概念定义的瞬时混沌度和k步混沌强度是混沌轨道的稳定特征,应用独占球的概念定义了均匀度,它对均匀性的描述与人对均匀的理解非常符合.被含均匀度是一个过渡概念,它与均匀度非常相似,但有更好的数学性质,对于随机轨道,被含... 详细信息

基于独占球的概念定义的瞬时混沌度和k步混沌强度是混沌轨道的稳定特征,应用独占球的概念定义了均匀度,它对均匀性的描述与人对均匀的理解非常符合.被含均匀度是一个过渡概念,它与均匀度非常相似,但有更好的数学性质,对于随机轨道,被含均匀度统计收敛于1/Vn(1)(Vn(1)是n维欧氏空间的单位球体积),而当轨道上的点充分多时,均匀度与被含均匀度近似相等.只要适当选择包含动力系统吸引盆的多面体,瞬时混沌强度与均匀度的比值是一个常数.均匀度对Logistic映射的应用表明,随着Logistic映射参数r的增大,它的轨道越来越均匀,但不会超过一维随机轨道的期望均匀度0.5,这说明准周期轨道和随机轨道是混沌轨道的两个极端.

关键词：独占球均匀度混沌瞬时混沌强度

Conceptual design of a Cs2LiLaBr6 scintillator‑based neutron total cross section spectrometer on the back‑n beam line at CSNS

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Nuclear Science and Techniques 2023年第1期34卷 23-32页

作者： Da‑Jun Zhao Song Feng Pin‑Jing Cheng Rong Liu wen luo Hao‑Qiang Wang Jie‑Ming Xue Kun Zhu Bo Zheng School of Nuclear Science and Technology University of South ChinaHengyang 421001China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China

To reduce the experimental uncertainty in the 235 U resonance energy region and improve the detection efficiency for neutron total cross section measurements compared with those obtained with the neutron total cross section spectrometer(NTOX), a dedicated lithium-containing scintillation detector has been developed on the Back-n beam line at the China Spallation Neutron Source. The Fast Scintillator-based Neutron Total Cross Section(FAST) spectrometer has been designed based on a Cs2Li La Br6(CLLB) scintillator considering the γ-ray flash and neutron environment on the Back-n beam line. The response of the CLLB scintillator to neutrons and γ-rays was evaluated with different 6Li/7 Li abundance ratios using Geant4. The neutron-γdiscrimination performance of the CLLB has been simulated considering different scintillation parameters, physical designs,and light readout modes. A cubic 6Li-enriched( > 90%) CLLB scintillator, which has a thickness of 4-9 mm and side length of no less than 50 mm to cover the Φ 50 mm neutron beam at the spectrometer position, has been proposed coupling to a side readout SiPM array to construct the FAST spectrometer. The developed simulation techniques for neutron-γ discrimination performance could provide technical support for other neutron-induced reaction measurements on the Back-n beam line.

关键词： Neutron total cross section CLLB scintillator Geant4 Pulse shape discrimination(PSD)

Atomic-level correlation between the electrochemical performance of an oxygen-evolving catalyst and the effects of CeO_(2) functionalization

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Nano Research 2022年第4期15卷 2994-3000页

作者： Yanyan Li wen luo Duojie Wu Qi Wang Jie Yin Pinxian Xi Yongquan Qu Meng Gu Xinyu Zhang Zhouguang Lu Zhiping Zheng School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China Department of Chemistry Guangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhen 518055China Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology) Ministry of EducationShenzhen 518055China Department of Materials Science and Engineering Shenzhen Key Laboratory of Interfacial Science and Engineering of MaterialsSouthern University of Science and TechnologyShenzhen 518055China Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhen 518055China Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering Research Centre of Biomedical NanotechnologyLanzhou UniversityLanzhou 730000China School of Chemical Engineering and Technology Center for Applied Chemical ResearchFrontier Institute of Science and TechnologyXi'an Jiaotong UniversityXi'an 710049China

Herein,we prepared a bimetallic layered double hydroxide(FeCo LDH)featuring a dandelion-like *** of CeO_(2)onto FeCo LDH produced interfaces between the functionalizing CeO_(2)and the parent *** electrochemical studies were carried *** potential,overpotential,and Tafel slope point to the superior oxygen-evolving performance of CeO_(2)-FeCo LDH with respect to FeCo LDH,therefore,demonstrating the merits of CeO_(2)*** electronic structures of Fe,Co,and Ce were analyzed by X-ray photoelectron spectroscopy(XPS)and electron energy loss spectroscopy(EELS)from which the increase of Co^(3+)and the concurrent lowering of Ce^(4+)were *** the use of CeO_(2)-FeCo LDH,accelerated formation at a sizably reduced potential of Co-OOH,one of the key intermediates preceding the release of O_(2)was observed by in situ Raman *** now have the atomic-level and location-specific evidence,the increase of the active Co^(3+)across the interface to correlate the enhanced catalytic performance with CeO_(2)functionalization.

关键词： CeO_(2)nanoparticles metal layered double hydroxides(LDHs) oxygen evolution reaction intermediate conversion

Management of hip fracture in COVID-19 infected patients

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World Journal of Orthopedics 2022年第6期13卷 544-554页

作者： Hao-Cheng Qin Zhong He Zhi-wen luo Yu-Lian Zhu Department of Rehabilitation Medicine Huashan HospitalFudan UniversityShanghai 200040China Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China

Given that the global population of elderly individuals is expanding and the difficulty of recovery,hip fractures will be a huge challenge and a critical health issue for all of *** people have spent more time at home during the coronavirus disease 2019(COVID-19)pandemic,hip fractures show no sign of *** studies have shown that patients with hip fracture and COVID-19 have a multifold increase in mortality compared to those uninfected and a more complex clinical *** present,no detailed research has systematically analyzed the relationship between these two conditions and proposed a comprehensive *** article aims to systematically review the impact of COVID-19 on hip fracture and provide practical *** found that hip fracture patients with COVID-19 have higher mortality rates and more complicated clinical ***,COVID-19 prevents hip fracture patients from receiving regular medical *** regard to the problems we encounter,we provide clinical recommendations based on existing research evidence and a clinical flowchart for the management of hip fracture patients who are COVID-19 *** study will help clinicians adequately prepare in advance when dealing with such patients and optimize treatment decisions.

关键词： Hip fracture COVID-19 Management Adverse impact Comorbidity Treatment

High Potassium Aggravates the Oxidative Stress Inducedy by Magnesium Deficiency in Rice Leaves

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Pedosphere 2008年第3期18卷 316-327页

作者： DING Yu-Chuan CHANG Chun-Rong luo wen WU Yan-Shou REN Xiao-Li WANG Ping XU Guo-Hua State Key Laboratory of Crop Genetics and Germplasm Enhancement College of Resources and Environmental SciencesNanjing Agricultural University Nanjing 210095 （China）. Institute of Soil and Fertilizer Shanxi Academy of Agricultural Sciences Taiyuan 030031 （China） Agronomy College South China University of Tropical Agriculture Danzhou 571737 （China）

Magnesium （Mg） deficiency in plant affects photosynthesis and many other metabolic processes. Rice （Oryza sativa L. cv. ＇Wuyunjing 7＇） plants were grown in hydroponics culture at three Mg and two potassium （K） levels under greenhouse conditions to examine the induction of oxidative stress and consequent antioxidant responses in rice leaves due to Mg deficiency. At low Mg （0.2 mmol L 1 Mg supply for two weeks after transplanting） and high K （6 mmol L^-1） for 21 days, the rice plants showed severe Mg deficiency and a significant decreases in the dry matter production. The Mg deficiency in leaves decreased chlorophyll concentrations, photosynthetic activity, and soluble protein, but significantly increased the concentrations of soluble sugars and malondialdchyde （MDA） and the activities of superoxide dismutase （SOLD, EC 1.***.1.1）, catalase （CAT, EC 1.***.1.6） and peroxidase （POD, EC 1.***.1.7）. In addition, Mg concentrations in the leaves and in the shoot biomass were negatively related to the activities of the three antioxidative enzymes and the concentration of MDA in leaves. There were very significant interactive effects between Mg and K supplied in the culture solution on shoot biomass yield, chlorophyll content, photosynthesis rate, the activities of SOD, CAT and POD, and MDA content in the leaves of rice. It is suggested that the high K level in the nutrient solution aggravated the effect of low Mg supply-induced Mg deficiency and created the oxidative damage in rice plants.

关键词： antioxidative enzymes magnesium nutrients interaction Oryza sativa L. potassium

High expression of BCL6 inhibits the differentiation and development of hematopoietic stem cells and affects the growth and development of chickens

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Journal of Animal Science and Biotechnology 2021年第3期12卷 904-916页

作者： Hongmei Li Bowen Hu Shang Hu wen luo Donglei Sun Minmin Yang Zhiying Liao Haohui Wei Changbin Zhao Dajian Li Meiqing Shi Qingbin luo Dexiang Zhang Qinghua Nie Xiquan Zhang Department of Animal Genetics Breeding and ReproductionCollege of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642Guangdong ProvinceChina Guangdong Provincial Key Lab of AgroAnimal Genomics and Molecular Breeding and Key Lab of Chicken Genetics Breeding and ReproductionMinistry of AgricultureGuangzhou 510642GuangdongChina State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources South China Agricultural UniversityGuangzhou 510642GuangdongChina Division of Immunology Virginia-Maryland College of Veterinary MedicineUniversity of MarylandCollege ParkMDUSA

Background:B-cell CLL/lymphoma 6(BCL6)is a transcriptional master regulator that represses more than 1200 potential target *** previous study showed that a decline in blood production in runting and stunting syndrome(RSS)affected sex-linked dwarf(SLD)chickens compared to SLD ***,the association between BCL6 gene and hematopoietic function remains unknown in ***:In this study,we used RSS affected SLD(RSS-SLD)chickens,SLD chickens and normal chickens as research object and overexpression of BCL6 in hematopoietic stem cells(HSCs),to investigate the effect of the BCL6 on differentiation and development of ***:The results showed that comparison of RSS-SLD chickens with SLD chickens,the BCL6 was highly expressed in RSS-SLD chickens bone *** bone marrow of RSS-SLD chickens was exhausted and red bone marrow was largely replaced by yellow bone marrow,bone density was reduced,and the levels of immature erythrocytes in peripheral blood were *** the same time,the hematopoietic function of HSCs decreased in RSS-SLD chickens,which was manifested by a decrease in the hematopoietic growth factors(HGFs)EPO,SCF,TPO,and IL-3,as well as hemoglobinα1 and hemoglobinβ***,mitochondrial function in the HSCs of RSS-SLD chickens was damaged,including an increase in ROS production,decrease in ATP concentration,and decrease in mitochondrial membrane potential(ΔΨm).The same results were also observed in SLD chickens compared with normal chickens;however,the symptoms were more serious in RSS-SLD ***,after overexpression of the BCL6 in primary HSCs,the secretion of HGFs(EPO,SCF,TPO and IL-3)was inhibited and the expression of hemoglobinα1 and hemoglobinβwas ***,cell proliferation was accelerated,apoptosis was inhibited,and the HSCs entered a cancerous *** function of mitochondria was also abnormal,ROS production was decreased,and ATP concentration andΔΨm were increased,which was related t

关键词： BCL6 Hematopoietic stem cells Mitochondrial function Runting and stunting syndrome Sex-linked dwarf chickens