检索结果-南通市图书馆

Estimating the subsolar magnetopause position from soft X-ray images using a low-pass image filter

Earth and Planetary Physics 2024年第1期8卷 173-183页

作者： Hyangpyo Kim Hyunju K.Connor jaewoong jung Brian M.Walsh David Sibeck Kip D.Kuntz Frederick S.Porter Catriana K.Paw U Rousseau A.Nutter Ramiz Qudsi Rumi Nakamura Michael Collier Space Research Institute Austrian Academy of Sciences8042 GrazAustria Geophysical Institute University of Alaska FairbanksFairbanksAlaska 99775USA National Aeronautics and Space Administration(NASA)Goddard Space Flight Center GreenbeltMaryland 20771USA Astronomy Department University of Maryland College ParkCollege ParkMaryland 20742USA Center for Space Physics Boston UniversityBostonMassachusetts 02215USA Department of Physics and Astronomy Johns Hopkins UniversityBaltimoreMaryland 21218USA Howard University WashingtonDC 20059USA

The Lunar Environment heliospheric X-ray Imager(LEXI)and Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)missions will image the Earth’s dayside magneto pause and cusps in soft X-rays after their respective launches in the near future,to specify glo bal magnetic reconnection modes for varying solar wind *** suppo rt the success of these scientific missions,it is critical to develop techniques that extract the magnetopause locations from the observed soft X-ray *** this research,we introduce a new geometric equation that calculates the subsolar magnetopause position(RS)from a satellite position,the look direction of the instrument,and the angle at which the X-ray emission is *** assumptions are used in this method:(1)The look direction where soft X-ray emissions are maximized lies tangent to the magnetopause,and(2)the magnetopause surface near the subsolar point is almost spherical and thus RSis nea rly equal to the radius of the magneto pause *** create synthetic soft X-ray images by using the Open Geospace General Circulation Model(OpenGGCM)global magnetohydrodynamic model,the galactic background,the instrument point spread function,and Poisson *** then apply the fast Fourier transform and Gaussian low-pass filte rs to the synthetic images to re move noise and obtain accurate look angles for the soft X-ray pea *** the filte red images,we calculate RS and its accuracy for different LEXI locations,look directions,and solar wind densities by using the OpenGGCM subsolar magnetopause location as ground *** method estimates RS with an accuracy of10 *** accuracy improves for greater solar wind densities and during southward interplanetary magnetic *** method ca ptures the magnetopause motion during southwa rd interplaneta ry magnetic field ***,the technique will enable quantitative analysis of the magnetopause motion and help reveal the daysi

关键词： soft X-ray magnetopause reconnection low-pass filter LEXI SMILE

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

国际盆景协会佳作选登(五)

引用

花木盆景（下半月） 2024年第6期 64-67页

作者： [菲律宾]Charlie Lee [波兰]Piotr Tomasz Czernichowski [韩国]park jae Heon [墨西哥]Enrique Castano [印度尼西亚]Oka Sunarya [捷克]Vaclav Novak 罗民轩不详中国台湾

国际盆景协会(Bonsai Clubs International,BCI)于1963年在美国成立,会员分布在50多个国家和地区,每年在不同的国家或地区举行大会和年展,对世界盆景文化的发展起到了重要的推动作用。2023年9月,陈昌先生成功当选BCI主席,成为BCI历史上... 详细信息

国际盆景协会(Bonsai Clubs International,BCI)于1963年在美国成立,会员分布在50多个国家和地区,每年在不同的国家或地区举行大会和年展,对世界盆景文化的发展起到了重要的推动作用。2023年9月,陈昌先生成功当选BCI主席,成为BCI历史上首位中国籍主席。本栏目由花木盆景杂志社与BCI合办,让您通过BCI之窗,领略世界各地盆景魅力。

关键词：花木盆景盆景协会中国籍 BCI

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Strategy for Creating AR Applications in Static and Dynamic Environments Using SLAM-and Marker Detector-Based Tracking

引用

Computer Modeling in Engineering & Sciences 2022年第4期131卷 529-549页

作者： Chanho park Hyunwoo Cho Sangheon park Sung-Uk jung Suwon Lee Electronics and Telecommunications Research Institute Daejeon34129Korea Graduate School of Engineering The University of TokyoTokyo113-0033Japan School of Computer Science and The Research Institute of Natural Science Gyeongsang National UniversityJinju-si52828Korea

Recently,simultaneous localization and mapping(SLAM)has received considerable attention in augmented reality(AR)libraries and *** the assumption of scene rigidity is common in most visual SLAMs,this assumption limits the possibilities of AR applications in various real-world *** this paper,we propose a new tracking system that integrates SLAMwith amarker detection module for real-time AR applications in static and dynamic *** the proposed system assumes that the marker is movable,SLAM performs tracking andmappingof the static scene except for themarker,andthemarker detector estimates the 3-dimensional pose of the marker attached to the dynamic *** can place SLAM maps,cameras,and dynamic objects(markers)on the same coordinate system,and we can also accurately augment AR resources in real-time on both the static scene and dynamic objects ***,having a static map of the scene in advance has the advantage of being able to performtracking of static and dynamic environments with mapping *** this paper,we evaluate whether the proposed tracking systemis suitable for AR applications and describe a strategy for creating AR applications in static and dynamic environments with a demonstration.

关键词： Augmented reality SLAM marker tracking coordinate system

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High efficiency and stable solid-state fiber dye-sensitized solar cells obtained using TiO_(2) photoanodes enhanced with metal organic frameworks

引用

Journal of Energy Chemistry 2022年第4期31卷 458-466页

作者： jae Ho Kim Hyun Woo park Sung-Jun Koo Daseul Lee Eunyeong Cho Yong-Ki Kim Myunghun Shin Jin Woo Choi Hee jung Lee Myungkwan Song Department of Energy and Electronic Material Korea Institute of Materials Science(KIMS)797 Changwon-daeroSungsan-guChangwonGyeongsangnam-do 51508Republic of Korea Composites Research Division Korea Institute of Materials Science(KIMS)797 Changwon-daeroSungsan-GuChangwonGyeongsangnam-do 51508Republic of Korea School of Electronics and Information Engineering Korea Aerospace UniversityGoyang-cityGyeonggi-do 10540Republic of Korea

Solid-state fiber dye-sensitized solar cells(SS-FDSSCs) have been the subject of intensive attention and development in recent years. Although this field is only in its infancy, metal–organic frameworks(MOFs) are one such material that has been utilized to further improve the power conversion efficiency of solar cells. In this study, MOF-integrated DSSCs were shown to have potential in the development of solar cell devices with efficiency comparable to or better than that of conventional solar cells. The power conversion efficiency(PCE) of SS-FDSSCs was improved by embedding MOF-801 into a mesoporous-TiO_(2)(mp-TiO_(2)) layer, which was used as a photoanode in SS-FDSSCs, which are inherently flexible. The PCE of the MOF-integrated SS-FDSSCs was 6.50%, which is comparable to that of the reference devices(4.19%).The MOF-801 enhanced SS-FDSSCs decreased the series resistance(R_(s)) value, resulting in effective electron extraction with improved short-circuit current density(J_(SC)), while also increasing the shunt resistance(R_(sh)) value to prevent the recombination of photo-induced electrons. The result is an improved fill factor and, consequently, a higher value for the PCE.

关键词： Photoanode Metal organic frameworks Solid-state electrolyte Dye-sensitized solar cells Fiber-shaped solar cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neonatal erythema multiforme associated with a rotavirus infection:A case report

引用

世界临床病例杂志 2023年第24期11卷 5749-5754页

作者： jung jae Kim Joon Kee Lee Department of Pediatrics Chungbuk National University HospitalCheongju 28644South Korea Department of Pediatrics Chungbuk National UniversityCheongju 28644South Korea

BACKGROUND Erythema multiforme(EM)is an extremely rare condition in neonates,and studies suggest its association with certain infections and neonatal vaccinations;however,few specific etiological agents have been ***,a common pathogenic gastrointestinal virus in the neonatal period that is preventable via vaccination,has not been identified as a possible *** report the case of a neonate who was referred for skin lesions presenting as EM,where a meticulous workup identified rotavirus as the sole causative *** SUMMARY A 14-day-old male infant was admitted to our hospital with a 1-day history of skin *** medical history or medication intake was *** for the complaint of skin lesions,the caregivers denied any abnormal *** tests,including routine laboratory evaluations,were performed to identify the cause of skin *** tests for Immunoglobulin M for Toxoplasma,Rubella,Cytomegalovirus,Herpes Simplex Virus,and Epstein-Barr virus viral-capsid antigen were all *** polymerase chain reaction(PCR)tests for respiratory viruses and bacterial pathogens were negative(including the severe acute respiratory syndrome coronavirus 2).Multiple PCR tests for gastrointestinal viruses and bacterial pathogens demonstrated evidence of rotavirus *** growth was reported in the blood and urine *** patient received intravenous fluids for hydration;meanwhile,no other medications were *** lesions improved rapidly without specific treatment,and full recovery was achieved within a *** The possibility of rotavirus,a major cause of pediatric gastrointestinal infections,being a trigger for neonatal EM should be considered.

关键词： Erythema multiforme Gastrointestinal diseases Neonate Rotavirus Skin abnormalities Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Endovascular treatment of a ruptured pseudoaneurysm of the internal carotid artery in a patient with nasopharyngeal cancer:A case report

引用

World Journal of Clinical Cases 2022年第25期10卷 9121-9126页

作者： jung-Soo park Hyoung Gyu Jang Department of Neurosurgery Jeonbuk National University Medical School and HospitalJeonju 54907South Korea

BACKGROUND Radiation therapy(RT)for nasopharyngeal cancer can cause several *** rare cases,an internal carotid artery pseudoaneurysm can occur,which can be *** report the experience of a nasopharyngeal cancer patient who underwent radiation therapy and subsequently developed a fatal pseudoaneurysm of the petrous internal carotid *** SUMMARY A 39-year-old man was diagnosed with nasopharyngeal cancer 2 years ago(American Joint Committee on Cancer Stage T3N2M0)and received concurrent chemoradiation *** subsequently relapsed and received *** week after the 4th cycle of chemotherapy,he was admitted to the emergency room of our hospital because of massive epistaxis accompanied by a headache.A pseudoaneurysm of the petrous internal carotid artery was confirmed by digital subtraction angiography(DSA).Stent-assisted endovascular coil embolization was performed and complete occlusion was *** pseudoaneurysm was observed on DSA after coil embolization;however,intermittent epistaxis was maintained even after coil *** seven days,a diagnostic laryngoscopy was *** bleeding occurred after aspiration of the blood clot during the laryngoscopy and the patient died of hypovolemic *** this case,epistaxis may have been a sign of pseudoaneurysm;therefore,treatment such as embolization should be performed promptly,and careful management should be undertaken after *** This case highlights a rare,serious complication of RT in nasopharyngeal cancer and how it should be recognized and treated.

关键词： Pseudoaneurysm Nasopharyngeal cancer Radiation therapy Epistaxis Carotid artery pseudoaneurysm Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ventral hernia after high-intensity focused ultrasound ablation for uterine fibroids treatment:A case report

引用

World Journal of Clinical Cases 2022年第30期10卷 11204-11209页

作者： jung-Woo park Hwa Yeon Choi Department of Obstetrics and Gynecology Dong-A University College of MedicineBusan 49201South Korea

BACKGROUND High-intensity focused ultrasound(HIFU) ablation is a minimally invasive approach in gynecology that is used to manage uterine *** this procedure is safe and effective,adverse outcomes are becoming a major *** SUMMARY We present a case of ventral hernia that occurred as a rare and delayed complication of HIFU ablation for uterine fibroids *** patient came to the hospital with abdominal bloating that occurred 6 mo after ultrasound-guided HIFU ablation for managing uterine *** ventral hernia,which occurred due to atrophied muscle layers following the procedure,was confirmed by imaging studies and intraoperative *** required a hernia repair with mesh and hysterectomy for definitive treatment of uterine *** High-intensity ultrasound ablation should be performed only on appropriate *** should be educated about potential complications of the procedure and the possibility of subsequent ***-procedural long-term follow-up for detecting delayed adverse effects is important.

关键词： Uterine fibroids High-intensity focused ultrasound ablation Conservative treatment Ventral hernia Complication Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The homeostatic γc cytokines IL-7 and IL-15 suppress the induction of CD4^(+) CD8αα^(+) intraepithelial T cells in the gut

引用

Cellular & Molecular Immunology 2022年第6期19卷 751-753页

作者： Can Li Praveen Prakhar jung-Hyun park Experimental Immunology Branch Center for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMD20892USA

All T cells require cytokine signaling for their development and maintenance, and CD8αα^(+) IEL T cells are noted for their requirement for IL-15 [8]. This IL-15 dependency was demonstrated by the paucity of CD8αα^(+) T cells among SI IELs in Il15–/– mice (Fig. 1d and Fig. S1a). However, the cytokine requirements of CD8αα^(+)CD4^(+) T cells are currently unclear. Because of the shared phenotype of CD8αα expression with CD8αα^(+) IELs, we postulated that CD4^(+)CD8αα^(+) IELs would also depend on IL-15.

关键词： CD8α cytokine cytokines

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nonlinear Electrical Impedance Tomography Method Using a Complete Electrode Model for the Characterization of Heterogeneous Domains

引用

Computer Modeling in Engineering & Sciences 2023年第3期134卷 1707-1735页

作者： Jeongwoo park Bong-Gu jung Jun Won Kang Department of Civil and Environmental Engineering Hongik UniversitySeoul04066Korea

This paper presents an electrical impedance tomography(EIT)method using a partial-differential-equationconstrained optimization *** forward problem in the inversion framework is described by a complete electrodemodel(CEM),which seeks the electric potential within the domain and at surface electrodes considering the contact impedance between *** finite element solution of the electric potential has been validated using a commercial *** inverse medium problem for reconstructing the unknown electrical conductivity profile is formulated as an optimization problem constrained by the *** method seeks the optimal solution of the domain’s electrical conductivity to minimize a Lagrangian functional consisting of a least-squares objective functional and a regularization *** the stationarity of the Lagrangian leads to state,adjoint,and control problems,which constitute the Karush-Kuhn-Tucker(KKT)first-order optimality ***,the electrical conductivity profile of the domain is iteratively updated by solving the KKT conditions in the reduced space of the control *** results show that the relative error of the measured and calculated electric potentials after the inversion is less than 1%,demonstrating the successful reconstruction of heterogeneous electrical conductivity profiles using the proposed EIT *** method thus represents an application framework for nondestructive evaluation of structures and geotechnical site characterization.

关键词： Electrical impedance tomography complete electrode model inverse medium problem Karush-Kuhn-Tucker(KKT)optimality conditions nondestructive evaluation of structures

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Multi-faceted small molecule for Alzheimer’s disease

引用

Neural Regeneration Research 2023年第10期18卷 2198-2199页

作者： Min Hee park Hee Kyung Jin jae-sung Bae KNU Alzheimer’s Disease Research Institute Department of PhysiologySchool of MedicineKyungpook National UniversityDaeguSouth Korea KNU Alzheimer’s Disease Research Institute Department of Laboratory Animal MedicineCollege of Veterinary MedicineKyungpook National UniversityDaeguSouth Korea

The main pathologies of Alzheimer’s disease(AD)are the accumulation of amyloid-B(AB)and tau ta ngles,and these two fundamental pathologies accompany the va rious neuropathological features,such as neuroinfla mmation,... 详细信息

关键词： Alzheimer tau amyloid

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：