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Landslide mapping and analysis along the China-Pakistan Karakoram Highway based on SBAS-InSAR detection in 2017

Journal of Mountain Science 2021年第10期18卷 2540-2564页

作者： SU Xiao-jun ZHANG Yi MENG Xing-min YUE Dong-xia MA Jin-hui GUO Fu-yun ZHOU Zi-qiang REHMAN Mohib Ur khalid zainab CHEN Guan ZENG Run-qiang ZHAO Fu-meng College of Earth and Environmental Sciences Lanzhou UniversityLanzhou 730000China School of Earth Sciences Lanzhou UniversityLanzhou 730000China Gansu Tech Innovation Centre for Environmental Geology and Geohazard Prevention Lanzhou 730000China Geological Environment Monitoring Institute of Gansu Province Lanzhou 730050China Institute of Geological Hazards Prevention Gansu Academy of SciencesLanzhou 730000China

The Karakoram Highway(KKH),a part of the China–Pakistan Economic Corridor(CPEC),is a major highway connecting northern Pakistan to *** inventorying and analysis of landslides along KKH are challenging because of poor accessibility,vast study area,limited availability of ground-based datasets,and the complexity of landslide processes in the *** order to preserve life,property,and infrastructure,and to enable the uninterrupted and efficient operation of the KKH,it is essential to strengthen measures for the prevention and control of geological *** the present study,SBASInSAR(Small Baseline Subsets-Interferometric Synthetic Aperture Radar)was used to process 150 scenes of Sentinel 1-A images in the year 2017 along the Karakoram Highway.A total of 762 landslides,including 57 complex landslides,126 rock falls,167 debris slides,and 412 unstable slopes,ranging in size between 0.0017 and 10.63 km2 were ***,this study also gains an inventory of 40 active glacier movements in this *** categorization,displacements characteristics,spatial distribution,and their relationship with various contributing factors have been successfully investigated along the entire KKH using image interpretation and frequency-area *** criteria adopted for landslides categorization is presented in the *** results showed that the 2-D ground deformation derived in Hunza valley echoes well with the general regional landslides *** spatial distribution analysis revealed that there are clumped distributions of landslides in the Gaizi,Tashkurgan,and Khunjerab in China,as well as in Hunza valley,and north of Chilas city in *** results indicated that these landslides mainly occur on south-facing slopes with a slope angle of 20°–45°and elevation relief of 550–2,100 *** development is also related to low vegetation cover and weathering effects in mountain ***,our study provides scientific data

关键词： Landslides mapping Slope deformation Identification Landslide development Area development ratio SBAS-InSAR Karakoram Highway

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中巴经济走廊洪扎段潜在滑坡SBAS-InSAR早期识别及发育特征分析

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遥感学报 2024年第4期28卷 885-899页

作者：苏晓军张毅孟兴民 Rehman Mohib Ur khalid zainab 赵富萌岳东霞郭富赟周自强兰州大学资源环境学院兰州730000 兰州大学地质科学与矿产资源学院兰州730000 甘肃省环境地质与灾害防治技术创新中心兰州730000 兰州大学西部环境教育部重点实验室兰州730000 甘肃省地质环境监测院兰州730050 甘肃省科学院地质自然灾害防治研究所兰州730000

中巴经济走廊巴基斯坦境内洪扎河谷(Hunza Valley)段地形高差巨大、地质环境复杂,滑坡灾害多发,对河谷内村镇威胁极大,也严重制约中巴经济走廊安全建设与运行。为了加深对Hunza河谷滑坡灾害的认识,亟待进行滑坡识别编目和发育特征研究... 详细信息

中巴经济走廊巴基斯坦境内洪扎河谷(Hunza Valley)段地形高差巨大、地质环境复杂,滑坡灾害多发,对河谷内村镇威胁极大,也严重制约中巴经济走廊安全建设与运行。为了加深对Hunza河谷滑坡灾害的认识,亟待进行滑坡识别编目和发育特征研究。本研究基于升、降轨获取的87景哨兵一号(Sentinel-1)数据,利用SBAS-InSAR技术获取了洪扎河谷地表形变,计算了地表斜坡向形变速率。并综合利用光学遥感影像解译和野外实地调查验证,成功识别了洪扎河谷53处潜在滑坡,并讨论了滑坡识别效果,对Ghulmet和Humarri两个典型大型滑坡监测形变、影像解译和验证特征进行了分析。在此基础上,选取11个地形地质环境因素作为影响滑坡发育的因子,分析了滑坡分布发育特征。结果表明,升轨和降轨数据监测到研究区内斜坡向最大形变速率分别为−311 mm/a和−490 mm/a,洪扎河谷区不稳定形变阈值为−20 mm/a。大型滑坡受河流侵蚀作用,形变剧烈,次级滑坡发育。识别的潜在滑坡主要集中在河流两岸、公路上下边坡;潜在滑坡主要分布在风化堆积层以及千枚岩、板岩等变质岩区;高差200—1000 m、坡度30°—40°和坡向南、南西向为滑坡发育的优势地形条件;斜坡地表裸露、植被稀疏地段(NDVI<0.2)物源充足,滑坡较为发育。研究结果可用于巴基斯坦洪扎河谷防灾减灾工作,保障中巴经济走廊畅通运营,为具有毁路与堵江风险的滑坡重点监测和评价研究提供科学参考和数据支持。

关键词：中巴经济走廊洪扎河谷滑坡 SBAS-InSAR 地表形变早期识别发育特征

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Evaluation of modifi ed Alvarado scoring system and RIPASA scoring system as diagnostic tools of acute appendicitis

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World Journal of Emergency Medicine 2017年第4期8卷 276-280页

作者： Abdullah Shuaib Ali Shuaib zainab Fakhra Bader Marafi khalid Alsharaf Abdullah Behbehani Department of Surgery Kuwait Mubarak Alkabeer Hospital Jabriya Kuwait Biomedical Engineering Unit Physiology Department Faculty of Medicine Kuwait University Kuwait City Kuwait MD in internship year Kuwait Institute of Medical Specialization Kuwait City Kuwait Department of Surgery Faculty of Medicine Kuwait University Kuwait City Kuwait

BACKGROUND: Acute appendicitis is the most common surgical condition presented in emergency departments worldwide. Clinical scoring systems, such as the Alvarado and modified Alvarado scoring systems, were developed with the goal of reducing the negative appendectomy rate to 5%–10%. The Raja Isteri Pengiran Anak Saleha Appendicitis(RIPASA) scoring system was established in 2008 specif ically for Asian populations. The aim of this study was to compare the modif ied Alvarado with the RIPASA scoring system in Kuwait ***: This study included 180 patients who underwent appendectomies and were documented as having "acute appendicitis" or "abdominal pain" in the operating theatre logbook(unit B) from November 2014 to March 2016. The sensitivity, specificity, positive predictive value(PPV), negative predictive value(NPV), diagnostic accuracy, predicted negative appendectomy and receiver operating characteristic(ROC) curve of the modified Alvarado and RIPASA scoring systems were derived using SPSS statistical ***: A total of 136 patients were included in this study according to our criteria. The cut-off threshold point of the modif ied Alvarado score was set at 7.0, which yielded a sensitivity of 82.8% and a specif icity of 56%. The PPV was 89.3% and the NPV was 42.4%. The cut-off threshold point of the RIPASA score was set at 7.5, which yielded a 94.5% sensitivity and an 88% specif icity. The PPV was 97.2% and the NPV was 78.5%. The predicted negative appendectomy rates were 10.7% and 2.2% for the modif ied Alvarado and RIPASA scoring systems, respectively. The negative appendectomy rate decreased significantly, from 18.4% to 10.7% for the modified Alvarado, and to 2.2% for the RIPASA scoring system, which was a signif icant difference(P<0.001) for both scoring ***: Based on the results of this study, the RIPASA score is a simple scoring system with better sensitivity and specif icity than the modif ied Alvarado scoring system in A

关键词： Acute appendicitis Modifi ed Alvarado score RIPASA score

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Integrating cupping therapy in the management of tinnitus and dizziness:a pilot study

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TMR Non-Drug Therapy 2021年第2期4卷 32-38页

作者： zainab Almusleh Maha Al Sulaiteen khalid AHadi Entissar Hassan Amna Ali Jaleel Charalil Senior Consultant Hearing&Balance DisordersHamad Medical CorporationDohaQatar Specialist Hearing&Balance Disorders Hamad Medical CorporationDohaQatar Hearing&Balance technician Hamad Medical CorporationDohaQatar

Background:Cupping therapy is one of integrative medicine modalities which is used by several *** mechanism of action is not well known but there are several theories explained how it can play a rule in the treatment of *** recent years,huge advances have taken place in understanding of inner ear pathophysiology causing sensorineural hearing loss,tinnitus,and *** articles providing evidence of acupuncture treating dizziness and vertigo but no studies of cupping *** aim of this pilot study was to evaluate the safety and efficacy of integrating wet cupping therapy in the management of tinnitus and dizziness associated with ear ***:This is a prospective interventional pilot study in which pre and post intervention outcomes(tinnitus handicap inventory and dizziness handicap inventory)were assessed and compared.27 patients diagnosed with Ménière's disease and idiopathic tinnitus or tinnitus secondary to inner ear pathology were included in this study and received usual medical treatment and wet cupping ***:There was a significant improvement after 6 sessions of cupping in tinnitus handicap inventory and dizziness handicap inventory but not in patient’s *** adverse events were reported in this ***:Wet cupping therapy demonstrates a promising effectiveness in reducing discomforts of both dizziness and tinnitus.A large scale randomized controlled trial is recommended.

关键词： Cupping therapy Inner ear disease Tinnitus Meniere’s disease Dizziness

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Determination of Photon and Elementary Particles Rest Masses Using Maxwell’s Equations and Generalized Potential Dependent Special Relativity

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Natural Science 2020年第8期12卷 588-598页

作者： Abeer Mohammed Khairy Ahmed Mashair Ahmed Mohammed Yousif zainab Mustapha Kurawa Zoalnoon Ahmed Abeid Allah Saad Suhair Salih Makawy Mohammed Idriss Mohammed Mubarak Dirar Abd-Alla Sami Abdalla Elbadawi Mohamed Departmentof Physics Faculty of Art and Science at AL Muznab AL Qassim University AL Muznab Kingdom of Saudi Arabia Department of Physics Faculty of Science and Education at Alkhurma Taif University Alkhurma Kingdom of Saudi Arabia Department of Physics School of Science Education Saadatu Rimi College of Education Kumbosto Kano Nigeria Departmentof Physics Faculty of Arts and Sciences Dhahran Aljanoub King Khalid University Dahran Kingdom of Saudi Arabia Department of Physics Faculty of Science Taif University Taif Kingdom of Saudi Arabia Department of Physics Faculty of Science Sudan University of Science and Technology Khartoum Sudan Department of Physics Faculty of Education Gadarif University Gadarif Sudan

The nature and origin of the photon and elementary rest masses are some of the challeng-ing problems that physics face. The approaches used to solve these problems are complex and time-consuming. Specifically, the photon rest mass pays attention to theoretical physi-cists. Many experimental works show that the photon rest mass is non zero. This problem can be solved using generalized potential dependent special relativity, which has been de-rived using simple arguments, and Maxwell’s equations, besides the conventional Einstein energy-momentum relation. The results obtained show that the rest mass of photons and elementary particles are strongly dependent on the vacuum energy and a universal con-stant. This result conforms with the models that predict time decaying vacuum energy as-sociated with production of smaller rest mass particles followed by larger masses. The two potential dependent mass expressions conform with the cosmological models that suggest the photon is generated first by assuming the universe consisting of total constant vacuum with decaying cosmological part and mass generating part. Using Maxwell’s equations, beside plank and De Broglie hypothesis together with special relativity energy-momentum relation the photon rest mass is estimated. It was shown that the photon rest mass is ex-tremely small compared to the electron mass.

关键词： Photon Elementary Particles Maxwell’s Equations Potential Dependent Special Relativity Vacuum Energy

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Equivalence of String Classical and Quantum Energy beside Equivalence of Wave Packet and Relativistic Velocity in Eucleadian and Curved Space

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Natural Science 2020年第7期12卷 520-525页

作者： Mashair Ahmed Mohammed Yousif Abeer Mohammed Khairy Ahmed zainab Mustapha Kurawa Omer A. M. Elnor Mubarak Dirar Abd-Alla Yagoub Ibrahim Mohammed Elfaki El-Tahir Mohammed Idriss Ahmed Zoalnoon Ahmed Abeid Allah Saad Department of Physics Faculty of Science and Education at Alkurma Taif University Alkhurma Kingdom of Saudi Arabia Department of Physics Faculty of Art and Science at Al Muznab Al Qassim University Al Muznab Kingdom of Saudi Arabia Department of Physics School of Science Education Saadatu Rimi College of Education Kumbotso Nigeria Department of Physics Faculty of Science University of Bakhtalruda Ed Dueim Sudan Department of Physics Faculty of Science Sudan University of Science and Technology Khartoum Sudan Department of Natural and Applied Sciences College of Science and Humanities at Afif Sharga University Afif Kingdom of Saudi Arabia College of Arts and Sciences King Khalid University Dhahran Saudi Arabia

Plank quantum and classical string energy relations seem to be uncorrelated. This work correlated them. The relativistic energy-momentum relation has been used together with plank and de Brogglie hypothesis to prove that the wave group velocity is equal to the particle velocity in both ordinary and curved space. The plank energy relation is shown also to be related to the classical energy relation of an oscillating string. Starting from plank energy relation for n photons and performing integration, the expression of classical string energy was obtained. This means that one can treat electromagnetic waves as a collection of continuous photons having frequencies ranging from zero to w. Conversely, starting from classical string energy relation by differentiating it with respect to angular frequency, the plank quantum energy for n photons has been found. This means that the quanta results from separation of electromagnetic waves to single isolated waves. Each wave consists of n photons or quanta.

关键词： Plank Energy Classical Energy String Quanta Photons Electromagnetic Waves Curved Space Group Velocity Wave Packet

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