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The Spatiotemporal Distribution Characteristics of Cloud Types and Phases in the Arctic Based on CloudSat and CALIPSO Cloud Classification Products

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Advances in Atmospheric Sciences 2024年第2期41卷 310-324页

作者： Yue SUN Huiling YANG Hui XIAO liang feng Wei CHENG Libo ZHOU Weixi SHU Jingzhe SUN Key Laboratory of Cloud-Precipitation Physics and Severe Storms(LACS) and Department of Lower Atmospheric Observation Research(LAOR)Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth Sciences University of Chinese Academy of Sciences(UCAS)Beijing 100049China Beijing Institute of Applied Meteorology Beijing 100029China

The cloud type product 2B-CLDCLASS-LIDAR based on CloudSat and CALIPSO from June 2006 to May 2017 is used to examine the temporal and spatial distribution characteristics and interannual variability of eight cloud types(high cloud, altostratus, altocumulus, stratus, stratocumulus, cumulus, nimbostratus, and deep convection) and three phases(ice,mixed, and water) in the Arctic. Possible reasons for the observed interannual variability are also discussed. The main conclusions are as follows:(1) More water clouds occur on the Atlantic side, and more ice clouds occur over continents.(2)The average spatial and seasonal distributions of cloud types show three patterns: high clouds and most cumuliform clouds are concentrated in low-latitude locations and peak in summer;altostratus and nimbostratus are concentrated over and around continents and are less abundant in summer;stratocumulus and stratus are concentrated near the inner Arctic and peak during spring and autumn.(3) Regional averaged interannual frequencies of ice clouds and altostratus clouds significantly decrease, while those of water clouds, altocumulus, and cumulus clouds increase significantly.(4) Significant features of the linear trends of cloud frequencies are mainly located over ocean areas.(5) The monthly water cloud frequency anomalies are positively correlated with air temperature in most of the troposphere, while those for ice clouds are negatively correlated.(6) The decrease in altostratus clouds is associated with the weakening of the Arctic front due to Arctic warming, while increased water vapor transport into the Arctic and higher atmospheric instability lead to more cumulus and altocumulus clouds.

关键词： CloudSat and CALIPSO cloud type cloud phase temporal and spatial distribution interannual variation

Epidemiological Surveillance: Genetic Diversity of Rotavirus Group A in the Pearl River Delta, Guangdong, China in 2019

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Biomedical and Environmental Sciences 2024年第3期37卷 278-293页

作者： JIANG Jie Ying liang Dan WANG Li XIAO Yun liang Yu feng KE Bi Xia SU Juan XIAO Hong WANG Tao ZOU Min LI Hong Jian KE Chang Wen School of Public Health Shantou UniversityShantou 515063GuangdongChina Guangdong Provincial Center for Disease Control and Prevention Guangdong Workstation for Emerging Infectious Disease Control and PreventionGuangzhou 511430GuangdongChina Guangdong Provincial Key Laboratory of Virology Institute of Medical MicrobiologyJinan UniversityGuangzhou 510632GuangdongChina School of Public Health Sun Yat-sen UniversityGuangzhou 510275GuangdongChina School of Public Health Southern Medical UniversityGuangzhou 510515GuangdongChina Shantou University Medical College Shantou 515041GuangdongChina

Objective This study aimed to understand the epidemic status and phylogenetic relationships of rotavirus group A(RVA)in the Pearl River Delta region of Guangdong Province,*** This study included individuals aged 28 days–85 years.A total of 706 stool samples from patients with acute gastroenteritis collected between January 2019 and January 2020 were analyzed for 17 causative pathogens,including RVA,using a Gastrointestinal Pathogen Panel,followed by genotyping,virus isolation,and complete sequencing to assess the genetic diversity of *** The overall RVA infection rate was 14.59%(103/706),with an irregular epidemiological *** proportion of co-infection with RVA and other pathogens was 39.81%(41/103).Acute gastroenteritis is highly prevalent in young children aged 0–1 year,and RVA is the key pathogen circulating in patients 6–10 months of age with diarrhea.G9P[8](58.25%,60/103)was found to be the predominant genotype in the RVA strains,and the 41 RVA-positive strains that were successfully sequenced belonged to three different RVA genotypes in the phylogenetic *** analysis showed that gene reassortment events,selection pressure,codon usage bias,gene polymorphism,and post-translational modifications(PTMs)occurred in the G9P[8]and G3P[8]*** This study provides molecular evidence of RVA prevalence in the Pearl River Delta region of China,further enriching the existing information on its genetics and evolutionary characteristics and suggesting the emergence of genetic *** the surveillance of genotypic changes and gene reassortment in RVA strains is essential for further research and a better understanding of strain variations for further vaccine development.

关键词： Infectious diarrheal disease Rotavirus Phylogenetic analysis Gene rearrangement Codon usage bias Genetic diversity

Semisynthesis of homogeneous spike RBD glycoforms from SARS-CoV-2 for profiling the correlations between glycan composition and function

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National Science Review 2024年第2期11卷 145-154页

作者： Farong Ye Cheng Li feng-liang Liu Xinliang Liu Peng Xu Rong-Hua Luo Wenping Song Yong-Tang Zheng Tianlei Ying Biao Yu Ping Wang Center for Chemical Glycobiology Frontiers Science Center for Transformative Molecules Zhangjiang Institute for Advanced Study School of Chemistry and Chemical Engineering Shanghai Jiao Tong University MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology Shanghai Frontiers Science Center of Pathogenic Microorganisms and Infection Shanghai Institute of Infectious Disease and BiosecurityShanghai Engineering Research Center for Synthetic ImmunologySchool of Basic Medical Sciences Shanghai Medical College Fudan University Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province Center for Biosafety Mega-Science Kunming Institute of ZoologyChinese Academy of Sciences State Key Laboratory of Bioorganic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shenzhen Research Institute of Shanghai Jiao Tong University

Vaccines have been the primary remedy in the global fight against coronavirus disease 2019（COVID-19）.The receptor-binding domain（RBD） of the spike protein, a critical viral immunogen, is affected by the heterogeneity of its glycan structures and relatively low immunogenicity. Here, we describe a scalable synthetic platform that enables the precise synthesis of homogeneously glycosylated RBD, facilitating the elucidation of carbohydrate structure–function relationships. Five homogeneously glycosylated RBDs bearing biantennary glycans were prepared, three of which were conjugated to T-helper epitope(Tpep) from tetanus toxoid to improve their weak immune response. Relative to natural HEK293-derived RBD, synthetic RBDs with biantennary N-glycan elicited a higher level of neutralising antibodies against SARS-CoV-2 in mice. Furthermore, RBDs containing Tpepelicited significant immune responses in transgenic mice expressing human angiotensin-converting enzyme 2. Our collective data suggest that trimming the N-glycans and Tpepconjugation of RBD could potentially serve as an effective strategy for developing subunit vaccines providing efficient protection.

关键词： peptide ligation glycosylation glycoprotein

Dark Matter Search in Dwarf Irregular Galaxies with Ten Years of Data from the Ice Cube Neutrino Observatory

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Research in Astronomy and Astrophysics 2024年第3期24卷 75-82页

作者： Yi-Fei Lü Ben-Yang Zhu Rong-Lan Li Xue-Kang Guo Tian-Ci Liu Yong-Bo Huang Yun-feng liang Guangxi Key Laboratory for Relativistic AstrophysicsSchool of Physical Science and TechnologyGuangxi University Nanning 530004China

Dwarf irregular galaxies(dIrrs),as rotationally supported systems,have more reliable J-factor measurements than dwarf spheroidal galaxies and have received attention as targets for dark matter detection in recent *** this paper,we use 10 yr of IceCube muon-track data and an unbinned maximum-likelihood-ratio method to search for neutrino signals beyond the background from the directions of seven dIrrs,aiming to detect neutrinos produced by heavy annihilation dark *** do not detect any significant *** on such null results,we calculate the upper limits on the velocity-averaged annihilation cross section for 1 TeV–10 PeV dark *** limits,although weaker than the strictest constraints in the literature in this mass range,are also a good complement to the existing results considering the more reliable J-factor measurements of dIrrs.

关键词： (cosmology) dark matter-cosmology theory-galaxies dwarf

Microalgae-based drug delivery system for tumor microenvironment photo-modulating and synergistic chemo-photodynamic therapy of osteosarcoma

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Engineered Regeneration 2024年第2期5卷 199-209页

作者： feng liang Xueying An Ruoxi Wang Wenshu Wu Lin Yang Yixin Zheng Qing Jiang Xingquan Xu Danni Zhong Min Zhou Eye Center The Second Affiliated HospitalZhejiang University School of MedicineHangzhou310000PR China Department of Orthopedics The First Affiliated HospitalZhejiang University School of MedicineHangzhou310000PR China State Key Laboratory of Pharmaceutical Biotechnology Division of Sports Medicine and Adult Reconstructive SurgeryDepartment of Orthopedic SurgeryNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing210008PR China Zhejiang University-University of Edinburgh Institute(ZJU-UoE Institute) Zhejiang University School of MedicineZhejiang UniversityHaining314400PR China State Key Laboratory of Pharmaceutical Biotechnology Division of Sports Medicine and Adult Reconstructive SurgeryDepartment of Orthopedic SurgeryNanjing Drum Tower HospitalClinical College of Nanjing Medical UniversityNanjing210008PR China Institute of Translational Medicine Zhejiang UniversityHangzhou310029PR China Zhejiang University-Ordos City Etuoke Banner Joint Research Center Zhejiang UniversityHaining314400PR China

Osteosarcoma(OS)is one of the most common malignant tumors in children and young *** chemotherapy and other therapies are limited by low therapeutic efficiency,severe side effects and single therapeutic function,it is of high value to develop innovative therapies for precise and efficient treatment of ***,natural photo-synthetic microalgae(***,CV)were utilized as carriers for the chemotherapeutic agent doxorubicin(DOX)to create a multifunctional therapeutic platform(CV@DOX)for the photo-modulation of the tumor microenvi-ronment(TME)and synergistic chemo-photodynamic therapy of ***@DOX exhibited rapid drug release behavior in the acidic TME,improving the efficiency of chemotherapy against tumors and reducing side effects on other normal *** 650 nm laser irradiation,CV@DOX demonstrated the ability to effectively generate oxygen to alleviate tumor hypoxia and utilize the photosensitizing properties of chlorophyll in CV to produce an increased amount of reactive oxygen species(ROS),thereby enhancing photodynamic therapy(PDT).CV@DOX-mediated synergistic chemo-photodynamic therapy demonstrated efficacy in halting tumor progression in an orthotopic osteosarcoma mouse model by promoting tumor cell apoptosis,inhibiting tumor proliferation and ***,chlorophyll-assisted fluorescence imaging enabled monitoring of the distribution of CV@DOX in osteosarcoma after ***,CV@DOX did not cause significant hematological and tissue toxicity,and prevented DOX-induced cardiotoxicity,showing good in vivo ***,this work presents a novel TME-responsive and TME-modulating platform for imaging-guided multimodal osteosar-coma treatment.

关键词： Osteosarcoma Tumor hypoxia Photodynamic Chemotherapy Synergistic therapy

Central nervous injury risk factors after endovascular repair of a thoracic aortic aneurysm with type B aortic dissection

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World Journal of Clinical Cases 2024年第22期12卷 4873-4880页

作者： feng liang Jie-Qiong Su Department of Vascular Surgery Qinghai Province Cardiovascular and Cerebrovascular Disease Specialist HospitalXining 810012Qinghai ProvinceChina Department of Neurology Qinghai Province Cardiovascular and Cerebrovascular Disease Specialist HospitalXining 810012Qinghai ProvinceChina

Aortic dissection is the deadliest disease of the cardiovascular *** B aortic dissection accounts for 30%-60%of aortic dissections and is mainly treated by endovascular repair of thoracic endovascular aneurysm repair(TEVAR).However,patients are prone to various complications after surgery,with central nervous system injury being the most common,which seriously affects their prognosis and increases the risk of disability and ***,exploring the risk factors of central nervous system injury after TEVAR can provide a basis for its prevention and *** To investigate the risk factors for central nervous system injury after the repair of a thoracic endovascular aneurysm with type B aortic *** We enrolled 306 patients with type B aortic dissection who underwent TEVAR at our hospital between December 2019 and October *** patients were categorized into injury(n=159)and non-injury(n=147)groups based on central nervous system injury following *** risk factors for central nervous system injury after TEVAR for type B aortic dissection were screened by comparing the two *** logistic regression analysis was *** The Association between age,history of hypertension,blood pH value,surgery,mechanical ventilation,intensive care unit stay,postoperative recovery times on the first day after surgery,and arterial partial pressure of oxygen on the first day after surgery differed substantially(P<0.05).Multivariate logistic regression analysis indicated that age,surgery time,history of hypertension,duration of mechanical ventilation,and intensive care unit stay were independent risk factors for central nervous system injury after TEVAR of type B aortic dissection(P<0.05).CONCLUSION For high-risk patients with central nervous system injury after TEVAR of type B aortic dissection,early intervention measures should be implemented to lower the risk of neurological discomfort following surgery in high-risk patients

关键词： Plateau area Type B aortic dissection Thoracic endovascular aneurysm repair Central nervous system injury Risk factors

Comparing pharmacotherapy and transcranial magnetic stimulation for the treatment of anxiety and depression after aortic dissection surgery

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World Journal of Clinical Cases 2024年第21期12卷 4476-4482页

作者： Jie-Qiong Su feng liang Department of Neurology Qinghai Province Cardiovascular and Cerebrovascular Disease Specialist HospitalXining 810012Qinghai ProvinceChina Department of Vascular Surgery Qinghai Province Cardiovascular and Cerebrovascular Disease Specialist HospitalXining 810012Qinghai ProvinceChina

BACKGROUND Aortic coarctation is a potentially fatal condition that is primarily treated *** successful procedures,patients frequently experience postoperative anxiety and depression,which can hinder recovery and worsen *** interventions,such as 5-hydroxytryptamine(5-HT)and norepinephrine reuptake inhibitors,are commonly prescribed;however,their efficacy alone or in combination with non-invasive brain stimulation techniques,such as repetitive transcranial magnetic stimulation(TMS),remains *** To assess the effect of medications and TMS on post-aortic surgery anxiety and *** We analyzed the outcomes of 151 patients with anxiety and depression who were hospitalized for aortic dissection between January 2020 and September *** the random number table method,75 and 76 patients were allocated to the normal control and study groups,*** the patients were treated using routine *** control group was administered anti-anxiety and antidepression drugs,whereas the study group was treated with TMS in addition to these *** patients in both groups showed improvement after two courses of *** Hamilton Anxiety Scale(HAMA)and the Hamilton Depression Scale(HAMD)were used to assess anxiety and depression,*** serum levels of brain-derived neurotrophic factor(BDNF)and 5-HT were determined using enzyme-linked immunosorbent *** Pittsburgh Sleep Quality Index(PSQI)was used to estimate sleep quality,and the Repeatable Battery for the Assessment of Neuropsychological Status(RBANS)was used to assess cognitive *** The HAMD and HAMA scores reduced in 2 groups,with the study group achieving a lower level than control(P<0.05).In the control group,43 patients recovered,17 showed improvement,and 15 were deemed *** the study group,52 recovered,20 improved,and four were *** efficacy rate in study group was 94.74%compared to 80.00%in control(P<0.05

关键词： Aortic dissection Anxiety and depression Simple anti-anxiety and depression medications Repetitive transcranial magnetic stimulation Curative effect

新时代我国发起成立国际科技组织:机理、问题与路径

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上海交通大学学报（哲学社会科学版） 2024年第4期32卷 128-138页

作者：梁枫上海交通大学安泰经济与管理学院上海交通大学“数字化管理决策”教育部哲学社会科学实验室上海200030

在科技自立自强成为国家发展战略目标与任务的大背景下,“发起成立国际科技组织”作为新时代我国国际科技交流合作新的重要形态,能够使我国在激烈的国际科技竞争中掌握战略主动。基于机理分析,我国发起成立的国际科技组织在组织属性、... 详细信息

在科技自立自强成为国家发展战略目标与任务的大背景下,“发起成立国际科技组织”作为新时代我国国际科技交流合作新的重要形态,能够使我国在激烈的国际科技竞争中掌握战略主动。基于机理分析,我国发起成立的国际科技组织在组织属性、组织行为等维度上应具备实体化、公共化、国际化、法制化等基本要件。针对存在的主要问题,我国需要制定相关战略性整体规划、营造更开放的政策环境、出台更细化的成立审批要求和流程。在路径选择上,我国发起成立国际科技组织应遵循坚持独立自主、用好国际资源、选准学科领域、使用战略科学家等根本原则,同时,应基于自身优势和战略需求、突出组织特色和互补能力,通过组织创新的价值体现避免出现组织拥挤现象。

关键词：国际科技组织国际科技交流合作科技自立自强

Revisit of GeV Gamma-Ray Emission from Orion B with the Fermi Large Area Telescope

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Research in Astronomy and Astrophysics 2024年第9期 130-137页

作者： Wei Zeng Xiao-Na Sun Rui-Zhi Yang Jia-Chun He Zhao-Dong Shi Ting-Ting Ge Yun-feng liang En-Wei liang Guangxi Key Laboratory for Relativistic Astrophysics School of Physics Science and Technology Guangxi University Department of Astronomy School of Physical Sciences University of Science and Technology of China CAS Key Labrotory for Research in Galaxies and Cosmology University of Science and Technology of China School of Astronomy and Space Science University of Science and Technology of China School of Physics and Astronomy Sun Yat-sen University

We revisit the γ-ray emission above 300 Me V towards the massive star-forming region of Orion B by adopting14 yr observations with the Fermi Large Area Telescope and utilizing the updated software tools. The extended γ-ray emission region around Orion B is resolved into two components(region Ⅰ and region Ⅱ). The γ-ray spectrum of region I agrees with the predicted γ-ray spectrum assuming the cosmic ray(CR) density is the same as that of Alpha Magnetic Spectrometer(AMS-02) measured locally. The γ-ray emissivity of region II appears to be deficit at low energy band(E<3 GeV). Through modeling we find that CR densities exhibit a significant deficit below20 Ge V, which may be caused by a slow diffusion inside the dense region. This is probably caused by an increased magnetic field whose strength increases with the gas density.

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